David Hildenbrand [Mon, 23 Sep 2019 22:35:49 +0000 (15:35 -0700)]
drivers/base/memory.c: don't store end_section_nr in memory blocks
Each memory block spans the same amount of sections/pages/bytes. The size
is determined before the first memory block is created. No need to store
what we can easily calculate - and the calculations even look simpler now.
Michal brought up the idea of variable-sized memory blocks. However, if
we ever implement something like this, we will need an API compatibility
switch and reworks at various places (most code assumes a fixed memory
block size). So let's cleanup what we have right now.
While at it, fix the variable naming in register_mem_sect_under_node() -
we no longer talk about a single section.
Link: http://lkml.kernel.org/r/20190809110200.2746-1-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Hildenbrand [Mon, 23 Sep 2019 22:35:46 +0000 (15:35 -0700)]
driver/base/memory.c: validate memory block size early
Let's validate the memory block size early, when initializing the memory
device infrastructure. Fail hard in case the value is not suitable.
As nobody checks the return value of memory_dev_init(), turn it into a
void function and fail with a panic in all scenarios instead. Otherwise,
we'll crash later during boot when core/drivers expect that the memory
device infrastructure (including memory_block_size_bytes()) works as
expected.
I think long term, we should move the whole memory block size
configuration (set_memory_block_size_order() and
memory_block_size_bytes()) into drivers/base/memory.c.
Link: http://lkml.kernel.org/r/20190806090142.22709-1-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Hildenbrand [Mon, 23 Sep 2019 22:35:43 +0000 (15:35 -0700)]
drivers/base/memory.c: fixup documentation of removable/phys_index/block_size_bytes
Let's rephrase to memory block terminology and add some further
clarifications.
Link: http://lkml.kernel.org/r/20190806080826.5963-1-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Hildenbrand [Mon, 23 Sep 2019 22:35:40 +0000 (15:35 -0700)]
drivers/base/node.c: simplify unregister_memory_block_under_nodes()
We don't allow to offline memory block devices that belong to multiple
numa nodes. Therefore, such devices can never get removed. It is
sufficient to process a single node when removing the memory block. No
need to iterate over each and every PFN.
We already have the nid stored for each memory block. Make sure that the
nid always has a sane value.
Please note that checking for node_online(nid) is not required. If we
would have a memory block belonging to a node that is no longer offline,
then we would have a BUG in the node offlining code.
Link: http://lkml.kernel.org/r/20190719135244.15242-1-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Hildenbrand [Mon, 23 Sep 2019 22:35:37 +0000 (15:35 -0700)]
mm/memory_hotplug: remove move_pfn_range()
Let's remove this indirection. We need the zone in the caller either way,
so let's just detect it there. Add some documentation for
move_pfn_range_to_zone() instead.
[akpm@linux-foundation.org: restore newline, per David]
Link: http://lkml.kernel.org/r/20190724142324.3686-1-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kefeng Wang [Mon, 23 Sep 2019 22:35:34 +0000 (15:35 -0700)]
mm: do not hash address in print_bad_pte()
Using %px to show the actual address in print_bad_pte()
to help us to debug issue.
Link: http://lkml.kernel.org/r/20190831011816.141002-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Rapoport [Mon, 23 Sep 2019 22:35:31 +0000 (15:35 -0700)]
mm: consolidate pgtable_cache_init() and pgd_cache_init()
Both pgtable_cache_init() and pgd_cache_init() are used to initialize kmem
cache for page table allocations on several architectures that do not use
PAGE_SIZE tables for one or more levels of the page table hierarchy.
Most architectures do not implement these functions and use __weak default
NOP implementation of pgd_cache_init(). Since there is no such default
for pgtable_cache_init(), its empty stub is duplicated among most
architectures.
Rename the definitions of pgd_cache_init() to pgtable_cache_init() and
drop empty stubs of pgtable_cache_init().
Link: http://lkml.kernel.org/r/1566457046-22637-1-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Will Deacon <will@kernel.org> [arm64]
Acked-by: Thomas Gleixner <tglx@linutronix.de> [x86]
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Rapoport [Mon, 23 Sep 2019 22:35:28 +0000 (15:35 -0700)]
microblaze: switch to generic version of pte allocation
The microblaze implementation of pte_alloc_one() has a provision to
allocated PTEs from high memory, but neither CONFIG_HIGHPTE nor pte_map*()
versions for suitable for HIGHPTE are defined.
Except that, microblaze version of pte_alloc_one() is identical to the
generic one as well as the implementations of pte_free() and
pte_free_kernel().
Switch microblaze to use the generic versions of these functions. Also
remove pte_free_slow() that is not referenced anywhere in the code.
Link: http://lkml.kernel.org/r/1565690952-32158-1-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Rapoport [Mon, 23 Sep 2019 22:35:25 +0000 (15:35 -0700)]
sh: switch to generic version of pte allocation
The sh implementation pte_alloc_one(), pte_alloc_one_kernel(),
pte_free_kernel() and pte_free() is identical to the generic except of
lack of __GFP_ACCOUNT for the user PTEs allocation.
Switch sh to use generic version of these functions.
Link: http://lkml.kernel.org/r/1565250728-21721-4-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Rapoport [Mon, 23 Sep 2019 22:35:22 +0000 (15:35 -0700)]
ia64: switch to generic version of pte allocation
The ia64 implementation pte_alloc_one(), pte_alloc_one_kernel(),
pte_free_kernel() and pte_free() is identical to the generic except of
lack of __GFP_ACCOUNT for the user PTEs allocation.
Switch ia64 to use generic version of these functions.
Link: http://lkml.kernel.org/r/1565250728-21721-3-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nicholas Piggin [Mon, 23 Sep 2019 22:35:19 +0000 (15:35 -0700)]
mm: remove quicklist page table caches
Patch series "mm: remove quicklist page table caches".
A while ago Nicholas proposed to remove quicklist page table caches [1].
I've rebased his patch on the curren upstream and switched ia64 and sh to
use generic versions of PTE allocation.
[1] https://lore.kernel.org/linux-mm/
20190711030339.20892-1-npiggin@gmail.com
This patch (of 3):
Remove page table allocator "quicklists". These have been around for a
long time, but have not got much traction in the last decade and are only
used on ia64 and sh architectures.
The numbers in the initial commit look interesting but probably don't
apply anymore. If anybody wants to resurrect this it's in the git
history, but it's unhelpful to have this code and divergent allocator
behaviour for minor archs.
Also it might be better to instead make more general improvements to page
allocator if this is still so slow.
Link: http://lkml.kernel.org/r/1565250728-21721-2-git-send-email-rppt@linux.ibm.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Minchan Kim [Tue, 24 Sep 2019 00:02:24 +0000 (00:02 +0000)]
mm: release the spinlock on zap_pte_range
In our testing (camera recording), Miguel and Wei found
unmap_page_range() takes above 6ms with preemption disabled easily.
When I see that, the reason is it holds page table spinlock during
entire 512 page operation in a PMD. 6.2ms is never trivial for user
experince if RT task couldn't run in the time because it could make
frame drop or glitch audio problem.
I had a time to benchmark it via adding some trace_printk hooks between
pte_offset_map_lock and pte_unmap_unlock in zap_pte_range. The testing
device is 2018 premium mobile device.
I can get 2ms delay rather easily to release 2M(ie, 512 pages) when the
task runs on little core even though it doesn't have any IPI and LRU
lock contention. It's already too heavy.
If I remove activate_page, 35-40% overhead of zap_pte_range is gone so
most of overhead(about 0.7ms) comes from activate_page via
mark_page_accessed. Thus, if there are LRU contention, that 0.7ms could
accumulate up to several ms.
So this patch adds a check for need_resched() in the loop, and a
preemption point if necessary.
Link: http://lkml.kernel.org/r/20190731061440.GC155569@google.com
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reported-by: Miguel de Dios <migueldedios@google.com>
Reported-by: Wei Wang <wvw@google.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Wei Yang [Mon, 23 Sep 2019 22:35:13 +0000 (15:35 -0700)]
mm: remove redundant assignment of entry
Since ptent will not be changed after previous assignment of entry, it is
not necessary to do the assignment again.
Link: http://lkml.kernel.org/r/20190708082740.21111-1-richardw.yang@linux.intel.com
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Acked-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
John Hubbard [Mon, 23 Sep 2019 22:35:10 +0000 (15:35 -0700)]
net/xdp: convert put_page() to put_user_page*()
For pages that were retained via get_user_pages*(), release those pages
via the new put_user_page*() routines, instead of via put_page() or
release_pages().
This is part a tree-wide conversion, as described in
fc1d8e7cca2d ("mm:
introduce put_user_page*(), placeholder versions").
Link: http://lkml.kernel.org/r/20190724044537.10458-4-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Cc: Björn Töpel <bjorn.topel@intel.com>
Cc: Magnus Karlsson <magnus.karlsson@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
John Hubbard [Mon, 23 Sep 2019 22:35:07 +0000 (15:35 -0700)]
drivers/gpu/drm/via: convert put_page() to put_user_page*()
For pages that were retained via get_user_pages*(), release those pages
via the new put_user_page*() routines, instead of via put_page() or
release_pages().
This is part a tree-wide conversion, as described in
fc1d8e7cca2d ("mm:
introduce put_user_page*(), placeholder versions").
Also reverse the order of a comparison, in order to placate checkpatch.pl.
Link: http://lkml.kernel.org/r/20190724044537.10458-3-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
akpm@linux-foundation.org [Mon, 23 Sep 2019 22:35:04 +0000 (15:35 -0700)]
mm/gup: add make_dirty arg to put_user_pages_dirty_lock()
[11~From: John Hubbard <jhubbard@nvidia.com>
Subject: mm/gup: add make_dirty arg to put_user_pages_dirty_lock()
Patch series "mm/gup: add make_dirty arg to put_user_pages_dirty_lock()",
v3.
There are about 50+ patches in my tree [2], and I'll be sending out the
remaining ones in a few more groups:
* The block/bio related changes (Jerome mostly wrote those, but I've had
to move stuff around extensively, and add a little code)
* mm/ changes
* other subsystem patches
* an RFC that shows the current state of the tracking patch set. That
can only be applied after all call sites are converted, but it's good to
get an early look at it.
This is part a tree-wide conversion, as described in
fc1d8e7cca2d ("mm:
introduce put_user_page*(), placeholder versions").
This patch (of 3):
Provide more capable variation of put_user_pages_dirty_lock(), and delete
put_user_pages_dirty(). This is based on the following:
1. Lots of call sites become simpler if a bool is passed into
put_user_page*(), instead of making the call site choose which
put_user_page*() variant to call.
2. Christoph Hellwig's observation that set_page_dirty_lock() is
usually correct, and set_page_dirty() is usually a bug, or at least
questionable, within a put_user_page*() calling chain.
This leads to the following API choices:
* put_user_pages_dirty_lock(page, npages, make_dirty)
* There is no put_user_pages_dirty(). You have to
hand code that, in the rare case that it's
required.
[jhubbard@nvidia.com: remove unused variable in siw_free_plist()]
Link: http://lkml.kernel.org/r/20190729074306.10368-1-jhubbard@nvidia.com
Link: http://lkml.kernel.org/r/20190724044537.10458-2-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Johannes Weiner [Mon, 23 Sep 2019 22:35:01 +0000 (15:35 -0700)]
mm: vmscan: do not share cgroup iteration between reclaimers
One of our services observed a high rate of cgroup OOM kills in the
presence of large amounts of clean cache. Debugging showed that the
culprit is the shared cgroup iteration in page reclaim.
Under high allocation concurrency, multiple threads enter reclaim at the
same time. Fearing overreclaim when we first switched from the single
global LRU to cgrouped LRU lists, we introduced a shared iteration state
for reclaim invocations - whether 1 or 20 reclaimers are active
concurrently, we only walk the cgroup tree once: the 1st reclaimer
reclaims the first cgroup, the second the second one etc. With more
reclaimers than cgroups, we start another walk from the top.
This sounded reasonable at the time, but the problem is that reclaim
concurrency doesn't scale with allocation concurrency. As reclaim
concurrency increases, the amount of memory individual reclaimers get to
scan gets smaller and smaller. Individual reclaimers may only see one
cgroup per cycle, and that may not have much reclaimable memory. We see
individual reclaimers declare OOM when there is plenty of reclaimable
memory available in cgroups they didn't visit.
This patch does away with the shared iterator, and every reclaimer is
allowed to scan the full cgroup tree and see all of reclaimable memory,
just like it would on a non-cgrouped system. This way, when OOM is
declared, we know that the reclaimer actually had a chance.
To still maintain fairness in reclaim pressure, disallow cgroup reclaim
from bailing out of the tree walk early. Kswapd and regular direct
reclaim already don't bail, so it's not clear why limit reclaim would have
to, especially since it only walks subtrees to begin with.
This change completely eliminates the OOM kills on our service, while
showing no signs of overreclaim - no increased scan rates, %sys time, or
abrupt free memory spikes. I tested across 100 machines that have 64G of
RAM and host about 300 cgroups each.
[ It's possible overreclaim never was a *practical* issue to begin
with - it was simply a concern we had on the mailing lists at the
time, with no real data to back it up. But we have also added more
bail-out conditions deeper inside reclaim (e.g. the proportional
exit in shrink_node_memcg) since. Regardless, now we have data that
suggests full walks are more reliable and scale just fine. ]
Link: http://lkml.kernel.org/r/20190812192316.13615-1-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Roman Gushchin <guro@fb.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roman Gushchin [Mon, 23 Sep 2019 22:34:58 +0000 (15:34 -0700)]
mm: memcontrol: switch to rcu protection in drain_all_stock()
Commit
72f0184c8a00 ("mm, memcg: remove hotplug locking from try_charge")
introduced css_tryget()/css_put() calls in drain_all_stock(), which are
supposed to protect the target memory cgroup from being released during
the mem_cgroup_is_descendant() call.
However, it's not completely safe. In theory, memcg can go away between
reading stock->cached pointer and calling css_tryget().
This can happen if drain_all_stock() races with drain_local_stock()
performed on the remote cpu as a result of a work, scheduled by the
previous invocation of drain_all_stock().
The race is a bit theoretical and there are few chances to trigger it, but
the current code looks a bit confusing, so it makes sense to fix it
anyway. The code looks like as if css_tryget() and css_put() are used to
protect stocks drainage. It's not necessary because stocked pages are
holding references to the cached cgroup. And it obviously won't work for
works, scheduled on other cpus.
So, let's read the stock->cached pointer and evaluate the memory cgroup
inside a rcu read section, and get rid of css_tryget()/css_put() calls.
Link: http://lkml.kernel.org/r/20190802192241.3253165-1-guro@fb.com
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Chris Down [Mon, 23 Sep 2019 22:34:55 +0000 (15:34 -0700)]
mm, memcg: throttle allocators when failing reclaim over memory.high
We're trying to use memory.high to limit workloads, but have found that
containment can frequently fail completely and cause OOM situations
outside of the cgroup. This happens especially with swap space -- either
when none is configured, or swap is full. These failures often also don't
have enough warning to allow one to react, whether for a human or for a
daemon monitoring PSI.
Here is output from a simple program showing how long it takes in usec
(column 2) to allocate a megabyte of anonymous memory (column 1) when a
cgroup is already beyond its memory high setting, and no swap is
available:
[root@ktst ~]# systemd-run -p MemoryHigh=100M -p MemorySwapMax=1 \
> --wait -t timeout 300 /root/mdf
[...]
95 1035
96 1038
97 1000
98 1036
99 1048
100 1590
101 1968
102 1776
103 1863
104 1757
105 1921
106 1893
107 1760
108 1748
109 1843
110 1716
111 1924
112 1776
113 1831
114 1766
115 1836
116 1588
117 1912
118 1802
119 1857
120 1731
[...]
[System OOM in 2-3 seconds]
The delay does go up extremely marginally past the 100MB memory.high
threshold, as now we spend time scanning before returning to usermode, but
it's nowhere near enough to contain growth. It also doesn't get worse the
more pages you have, since it only considers nr_pages.
The current situation goes against both the expectations of users of
memory.high, and our intentions as cgroup v2 developers. In
cgroup-v2.txt, we claim that we will throttle and only under "extreme
conditions" will memory.high protection be breached. Likewise, cgroup v2
users generally also expect that memory.high should throttle workloads as
they exceed their high threshold. However, as seen above, this isn't
always how it works in practice -- even on banal setups like those with no
swap, or where swap has become exhausted, we can end up with memory.high
being breached and us having no weapons left in our arsenal to combat
runaway growth with, since reclaim is futile.
It's also hard for system monitoring software or users to tell how bad the
situation is, as "high" events for the memcg may in some cases be benign,
and in others be catastrophic. The current status quo is that we fail
containment in a way that doesn't provide any advance warning that things
are about to go horribly wrong (for example, we are about to invoke the
kernel OOM killer).
This patch introduces explicit throttling when reclaim is failing to keep
memcg size contained at the memory.high setting. It does so by applying
an exponential delay curve derived from the memcg's overage compared to
memory.high. In the normal case where the memcg is either below or only
marginally over its memory.high setting, no throttling will be performed.
This composes well with system health monitoring and remediation, as these
allocator delays are factored into PSI's memory pressure calculations.
This both creates a mechanism system administrators or applications
consuming the PSI interface to trivially see that the memcg in question is
struggling and use that to make more reasonable decisions, and permits
them enough time to act. Either of these can act with significantly more
nuance than that we can provide using the system OOM killer.
This is a similar idea to memory.oom_control in cgroup v1 which would put
the cgroup to sleep if the threshold was violated, but it's also
significantly improved as it results in visible memory pressure, and also
doesn't schedule indefinitely, which previously made tracing and other
introspection difficult (ie. it's clamped at 2*HZ per allocation through
MEMCG_MAX_HIGH_DELAY_JIFFIES).
Contrast the previous results with a kernel with this patch:
[root@ktst ~]# systemd-run -p MemoryHigh=100M -p MemorySwapMax=1 \
> --wait -t timeout 300 /root/mdf
[...]
95 1002
96 1000
97 1002
98 1003
99 1000
100 1043
101 84724
102 330628
103 610511
104 1016265
105 1503969
106 2391692
107 2872061
108 3248003
109 4791904
110 5759832
111 6912509
112 8127818
113 9472203
114
12287622
115
12480079
116
14144008
117
15808029
118
16384500
119
16383242
120
16384979
[...]
As you can see, in the normal case, memory allocation takes around 1000
usec. However, as we exceed our memory.high, things start to increase
exponentially, but fairly leniently at first. Our first megabyte over
memory.high takes us 0.16 seconds, then the next is 0.46 seconds, then the
next is almost an entire second. This gets worse until we reach our
eventual 2*HZ clamp per batch, resulting in 16 seconds per megabyte.
However, this is still making forward progress, so permits tracing or
further analysis with programs like GDB.
We use an exponential curve for our delay penalty for a few reasons:
1. We run mem_cgroup_handle_over_high to potentially do reclaim after
we've already performed allocations, which means that temporarily
going over memory.high by a small amount may be perfectly legitimate,
even for compliant workloads. We don't want to unduly penalise such
cases.
2. An exponential curve (as opposed to a static or linear delay) allows
ramping up memory pressure stats more gradually, which can be useful
to work out that you have set memory.high too low, without destroying
application performance entirely.
This patch expands on earlier work by Johannes Weiner. Thanks!
[akpm@linux-foundation.org: fix max() warning]
[akpm@linux-foundation.org: fix __udivdi3 ref on 32-bit]
[akpm@linux-foundation.org: fix it even more]
[chris@chrisdown.name: fix 64-bit divide even more]
Link: http://lkml.kernel.org/r/20190723180700.GA29459@chrisdown.name
Signed-off-by: Chris Down <chris@chrisdown.name>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Roman Gushchin <guro@fb.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Matthew Wilcox (Oracle) [Mon, 23 Sep 2019 22:34:52 +0000 (15:34 -0700)]
mm: page cache: store only head pages in i_pages
Transparent Huge Pages are currently stored in i_pages as pointers to
consecutive subpages. This patch changes that to storing consecutive
pointers to the head page in preparation for storing huge pages more
efficiently in i_pages.
Large parts of this are "inspired" by Kirill's patch
https://lore.kernel.org/lkml/
20170126115819.58875-2-kirill.shutemov@linux.intel.com/
Kirill and Huang Ying contributed several fixes.
[willy@infradead.org: use compound_nr, squish uninit-var warning]
Link: http://lkml.kernel.org/r/20190731210400.7419-1-willy@infradead.org
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Jan Kara <jack@suse.cz>
Reviewed-by: Kirill Shutemov <kirill@shutemov.name>
Reviewed-by: Song Liu <songliubraving@fb.com>
Tested-by: Song Liu <songliubraving@fb.com>
Tested-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Tested-by: Qian Cai <cai@lca.pw>
Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Song Liu <songliubraving@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Konstantin Khlebnikov [Mon, 23 Sep 2019 22:34:48 +0000 (15:34 -0700)]
mm/filemap.c: rewrite mapping_needs_writeback in less fancy manner
This actually checks that writeback is needed or in progress.
Link: http://lkml.kernel.org/r/156378817069.1087.1302816672037672488.stgit@buzz
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Konstantin Khlebnikov [Mon, 23 Sep 2019 22:34:45 +0000 (15:34 -0700)]
mm/filemap.c: don't initiate writeback if mapping has no dirty pages
Functions like filemap_write_and_wait_range() should do nothing if inode
has no dirty pages or pages currently under writeback. But they anyway
construct struct writeback_control and this does some atomic operations if
CONFIG_CGROUP_WRITEBACK=y - on fast path it locks inode->i_lock and
updates state of writeback ownership, on slow path might be more work.
Current this path is safely avoided only when inode mapping has no pages.
For example generic_file_read_iter() calls filemap_write_and_wait_range()
at each O_DIRECT read - pretty hot path.
This patch skips starting new writeback if mapping has no dirty tags set.
If writeback is already in progress filemap_write_and_wait_range() will
wait for it.
Link: http://lkml.kernel.org/r/156378816804.1087.8607636317907921438.stgit@buzz
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vlastimil Babka [Mon, 23 Sep 2019 22:34:42 +0000 (15:34 -0700)]
mm, page_owner, debug_pagealloc: save and dump freeing stack trace
The debug_pagealloc functionality is useful to catch buggy page allocator
users that cause e.g. use after free or double free. When page
inconsistency is detected, debugging is often simpler by knowing the call
stack of process that last allocated and freed the page. When page_owner
is also enabled, we record the allocation stack trace, but not freeing.
This patch therefore adds recording of freeing process stack trace to page
owner info, if both page_owner and debug_pagealloc are configured and
enabled. With only page_owner enabled, this info is not useful for the
memory leak debugging use case. dump_page() is adjusted to print the
info. An example result of calling __free_pages() twice may look like
this (note the page last free stack trace):
BUG: Bad page state in process bash pfn:13d8f8
page:
ffffc31984f63e00 refcount:-1 mapcount:0 mapping:
0000000000000000 index:0x0
flags: 0x1affff800000000()
raw:
01affff800000000 dead000000000100 dead000000000122 0000000000000000
raw:
0000000000000000 0000000000000000 ffffffffffffffff 0000000000000000
page dumped because: nonzero _refcount
page_owner tracks the page as freed
page last allocated via order 0, migratetype Unmovable, gfp_mask 0xcc0(GFP_KERNEL)
prep_new_page+0x143/0x150
get_page_from_freelist+0x289/0x380
__alloc_pages_nodemask+0x13c/0x2d0
khugepaged+0x6e/0xc10
kthread+0xf9/0x130
ret_from_fork+0x3a/0x50
page last free stack trace:
free_pcp_prepare+0x134/0x1e0
free_unref_page+0x18/0x90
khugepaged+0x7b/0xc10
kthread+0xf9/0x130
ret_from_fork+0x3a/0x50
Modules linked in:
CPU: 3 PID: 271 Comm: bash Not tainted 5.3.0-rc4-2.g07a1a73-default+ #57
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58-prebuilt.qemu.org 04/01/2014
Call Trace:
dump_stack+0x85/0xc0
bad_page.cold+0xba/0xbf
rmqueue_pcplist.isra.0+0x6c5/0x6d0
rmqueue+0x2d/0x810
get_page_from_freelist+0x191/0x380
__alloc_pages_nodemask+0x13c/0x2d0
__get_free_pages+0xd/0x30
__pud_alloc+0x2c/0x110
copy_page_range+0x4f9/0x630
dup_mmap+0x362/0x480
dup_mm+0x68/0x110
copy_process+0x19e1/0x1b40
_do_fork+0x73/0x310
__x64_sys_clone+0x75/0x80
do_syscall_64+0x6e/0x1e0
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f10af854a10
...
Link: http://lkml.kernel.org/r/20190820131828.22684-5-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vlastimil Babka [Mon, 23 Sep 2019 22:34:39 +0000 (15:34 -0700)]
mm, page_owner: keep owner info when freeing the page
For debugging purposes it might be useful to keep the owner info even
after page has been freed, and include it in e.g. dump_page() when
detecting a bad page state. For that, change the PAGE_EXT_OWNER flag
meaning to "page owner info has been set at least once" and add new
PAGE_EXT_OWNER_ACTIVE for tracking whether page is supposed to be
currently tracked allocated or free. Adjust dump_page() accordingly,
distinguishing free and allocated pages. In the page_owner debugfs file,
keep printing only allocated pages so that existing scripts are not
confused, and also because free pages are irrelevant for the memory
statistics or leak detection that's the typical use case of the file,
anyway.
Link: http://lkml.kernel.org/r/20190820131828.22684-4-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vlastimil Babka [Mon, 23 Sep 2019 22:34:36 +0000 (15:34 -0700)]
mm, page_owner: record page owner for each subpage
Patch series "debug_pagealloc improvements through page_owner", v2.
The debug_pagealloc functionality serves a similar purpose on the page
allocator level that slub_debug does on the kmalloc level, which is to
detect bad users. One notable feature that slub_debug has is storing
stack traces of who last allocated and freed the object. On page level we
track allocations via page_owner, but that info is discarded when freeing,
and we don't track freeing at all. This series improves those aspects.
With both debug_pagealloc and page_owner enabled, we can then get bug
reports such as the example in Patch 4.
SLUB debug tracking additionally stores cpu, pid and timestamp. This could
be added later, if deemed useful enough to justify the additional page_ext
structure size.
This patch (of 3):
Currently, page owner info is only recorded for the first page of a
high-order allocation, and copied to tail pages in the event of a split
page. With the plan to keep previous owner info after freeing the page,
it would be benefical to record page owner for each subpage upon
allocation. This increases the overhead for high orders, but that should
be acceptable for a debugging option.
The order stored for each subpage is the order of the whole allocation.
This makes it possible to calculate the "head" pfn and to recognize "tail"
pages (quoted because not all high-order allocations are compound pages
with true head and tail pages). When reading the page_owner debugfs file,
keep skipping the "tail" pages so that stats gathered by existing scripts
don't get inflated.
Link: http://lkml.kernel.org/r/20190820131828.22684-3-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yu Zhao [Mon, 23 Sep 2019 22:34:33 +0000 (15:34 -0700)]
mm: replace list_move_tail() with add_page_to_lru_list_tail()
This is a cleanup patch that replaces two historical uses of
list_move_tail() with relatively recent add_page_to_lru_list_tail().
Link: http://lkml.kernel.org/r/20190716212436.7137-1-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Matthew Wilcox (Oracle) [Mon, 23 Sep 2019 22:34:30 +0000 (15:34 -0700)]
mm: introduce compound_nr()
Replace 1 << compound_order(page) with compound_nr(page). Minor
improvements in readability.
Link: http://lkml.kernel.org/r/20190721104612.19120-4-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Matthew Wilcox (Oracle) [Mon, 23 Sep 2019 22:34:28 +0000 (15:34 -0700)]
mm: introduce page_shift()
Replace PAGE_SHIFT + compound_order(page) with the new page_shift()
function. Minor improvements in readability.
[akpm@linux-foundation.org: fix build in tce_page_is_contained()]
Link: http://lkml.kernel.org/r/201907241853.yNQTrJWd%25lkp@intel.com
Link: http://lkml.kernel.org/r/20190721104612.19120-3-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Matthew Wilcox (Oracle) [Mon, 23 Sep 2019 22:34:25 +0000 (15:34 -0700)]
mm: introduce page_size()
Patch series "Make working with compound pages easier", v2.
These three patches add three helpers and convert the appropriate
places to use them.
This patch (of 3):
It's unnecessarily hard to find out the size of a potentially huge page.
Replace 'PAGE_SIZE << compound_order(page)' with page_size(page).
Link: http://lkml.kernel.org/r/20190721104612.19120-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
YueHaibing [Mon, 23 Sep 2019 22:34:22 +0000 (15:34 -0700)]
mm/rmap.c: remove set but not used variable 'cstart'
Fixes gcc '-Wunused-but-set-variable' warning:
mm/rmap.c: In function page_mkclean_one:
mm/rmap.c:906:17: warning: variable cstart set but not used [-Wunused-but-set-variable]
It is not used any more since
commit
cdb07bdea28e ("mm/rmap.c: remove redundant variable cend")
Link: http://lkml.kernel.org/r/20190724141453.38536-1-yuehaibing@huawei.com
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Christophe JAILLET [Mon, 23 Sep 2019 22:34:19 +0000 (15:34 -0700)]
mm/page_poison.c: fix a typo in a comment
s/posioned/poisoned/
Link: http://lkml.kernel.org/r/20190721180908.6534-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Rutland [Mon, 23 Sep 2019 22:34:16 +0000 (15:34 -0700)]
lib/test_kasan.c: add roundtrip tests
In several places we need to be able to operate on pointers which have
gone via a roundtrip:
virt -> {phys,page} -> virt
With KASAN_SW_TAGS, we can't preserve the tag for SLUB objects, and the
{phys,page} -> virt conversion will use KASAN_TAG_KERNEL.
This patch adds tests to ensure that this works as expected, without
false positives which have recently been spotted [1,2] in testing.
[1] https://lore.kernel.org/linux-arm-kernel/
20190819114420.2535-1-walter-zh.wu@mediatek.com/
[2] https://lore.kernel.org/linux-arm-kernel/
20190819132347.GB9927@lakrids.cambridge.arm.com/
[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/20190821153927.28630-1-mark.rutland@arm.com
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Walter Wu [Mon, 23 Sep 2019 22:34:13 +0000 (15:34 -0700)]
kasan: add memory corruption identification for software tag-based mode
Add memory corruption identification at bug report for software tag-based
mode. The report shows whether it is "use-after-free" or "out-of-bound"
error instead of "invalid-access" error. This will make it easier for
programmers to see the memory corruption problem.
We extend the slab to store five old free pointer tag and free backtrace,
we can check if the tagged address is in the slab record and make a good
guess if the object is more like "use-after-free" or "out-of-bound".
therefore every slab memory corruption can be identified whether it's
"use-after-free" or "out-of-bound".
[aryabinin@virtuozzo.com: simplify & clenup code]
Link: https://lkml.kernel.org/r/3318f9d7-a760-3cc8-b700-f06108ae745f@virtuozzo.com]
Link: http://lkml.kernel.org/r/20190821180332.11450-1-aryabinin@virtuozzo.com
Signed-off-by: Walter Wu <walter-zh.wu@mediatek.com>
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Qian Cai [Mon, 23 Sep 2019 22:34:10 +0000 (15:34 -0700)]
mm/kmemleak: increase the max mem pool to 1M
There are some machines with slow disk and fast CPUs. When they are under
memory pressure, it could take a long time to swap before the OOM kicks in
to free up some memory. As the results, it needs a large mem pool for
kmemleak or suffering from higher chance of a kmemleak metadata allocation
failure. 524288 proves to be the good number for all architectures here.
Increase the upper bound to 1M to leave some room for the future.
Link: http://lkml.kernel.org/r/1565807572-26041-1-git-send-email-cai@lca.pw
Signed-off-by: Qian Cai <cai@lca.pw>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Qian Cai [Mon, 23 Sep 2019 22:34:07 +0000 (15:34 -0700)]
mm/kmemleak.c: record the current memory pool size
The only way to obtain the current memory pool size for a running kernel
is to check the kernel config file which is inconvenient. Record it in
the kernel messages.
[akpm@linux-foundation.org: s/memory pool size/memory pool/available/, per Catalin]
Link: http://lkml.kernel.org/r/1565809631-28933-1-git-send-email-cai@lca.pw
Signed-off-by: Qian Cai <cai@lca.pw>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Catalin Marinas [Mon, 23 Sep 2019 22:34:05 +0000 (15:34 -0700)]
mm: kmemleak: use the memory pool for early allocations
Currently kmemleak uses a static early_log buffer to trace all memory
allocation/freeing before the slab allocator is initialised. Such early
log is replayed during kmemleak_init() to properly initialise the kmemleak
metadata for objects allocated up that point. With a memory pool that
does not rely on the slab allocator, it is possible to skip this early log
entirely.
In order to remove the early logging, consider kmemleak_enabled == 1 by
default while the kmem_cache availability is checked directly on the
object_cache and scan_area_cache variables. The RCU callback is only
invoked after object_cache has been initialised as we wouldn't have any
concurrent list traversal before this.
In order to reduce the number of callbacks before kmemleak is fully
initialised, move the kmemleak_init() call to mm_init().
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: remove WARN_ON(), per Catalin]
Link: http://lkml.kernel.org/r/20190812160642.52134-4-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Qian Cai <cai@lca.pw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Catalin Marinas [Mon, 23 Sep 2019 22:34:02 +0000 (15:34 -0700)]
mm: kmemleak: simple memory allocation pool for kmemleak objects
Add a memory pool for struct kmemleak_object in case the normal
kmem_cache_alloc() fails under the gfp constraints passed by the caller.
The mem_pool[] array size is currently fixed at 16000.
We are not using the existing mempool kernel API since this requires
the slab allocator to be available (for pool->elements allocation). A
subsequent kmemleak patch will replace the static early log buffer with
the pool allocation introduced here and this functionality is required
to be available before the slab was initialised.
Link: http://lkml.kernel.org/r/20190812160642.52134-3-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Qian Cai <cai@lca.pw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Catalin Marinas [Mon, 23 Sep 2019 22:33:59 +0000 (15:33 -0700)]
mm: kmemleak: make the tool tolerant to struct scan_area allocation failures
Patch series "mm: kmemleak: Use a memory pool for kmemleak object
allocations", v3.
Following the discussions on v2 of this patch(set) [1], this series takes
slightly different approach:
- it implements its own simple memory pool that does not rely on the
slab allocator
- drops the early log buffer logic entirely since it can now allocate
metadata from the memory pool directly before kmemleak is fully
initialised
- CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE option is renamed to
CONFIG_DEBUG_KMEMLEAK_MEM_POOL_SIZE
- moves the kmemleak_init() call earlier (mm_init())
- to avoid a separate memory pool for struct scan_area, it makes the
tool robust when such allocations fail as scan areas are rather an
optimisation
[1] http://lkml.kernel.org/r/
20190727132334.9184-1-catalin.marinas@arm.com
This patch (of 3):
Object scan areas are an optimisation aimed to decrease the false
positives and slightly improve the scanning time of large objects known to
only have a few specific pointers. If a struct scan_area fails to
allocate, kmemleak can still function normally by scanning the full
object.
Introduce an OBJECT_FULL_SCAN flag and mark objects as such when scan_area
allocation fails.
Link: http://lkml.kernel.org/r/20190812160642.52134-2-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Qian Cai <cai@lca.pw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nicolas Boichat [Mon, 23 Sep 2019 22:33:55 +0000 (15:33 -0700)]
kmemleak: increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE default to 16K
The current default value (400) is too low on many systems (e.g. some
ARM64 platform takes up 1000+ entries).
syzbot uses 16000 as default value, and has proved to be enough on beefy
configurations, so let's pick that value.
This consumes more RAM on boot (each entry is 160 bytes, so in total
~2.5MB of RAM), but the memory would later be freed (early_log is
__initdata).
Link: http://lkml.kernel.org/r/20190730154027.101525-1-drinkcat@chromium.org
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Suggested-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Qian Cai [Mon, 23 Sep 2019 22:33:52 +0000 (15:33 -0700)]
mm/slub.c: fix -Wunused-function compiler warnings
tid_to_cpu() and tid_to_event() are only used in note_cmpxchg_failure()
when SLUB_DEBUG_CMPXCHG=y, so when SLUB_DEBUG_CMPXCHG=n by default, Clang
will complain that those unused functions.
Link: http://lkml.kernel.org/r/1568752232-5094-1-git-send-email-cai@lca.pw
Signed-off-by: Qian Cai <cai@lca.pw>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Waiman Long [Mon, 23 Sep 2019 22:33:49 +0000 (15:33 -0700)]
mm, slab: move memcg_cache_params structure to mm/slab.h
The memcg_cache_params structure is only embedded into the kmem_cache of
slab and slub allocators as defined in slab_def.h and slub_def.h and used
internally by mm code. There is no needed to expose it in a public
header. So move it from include/linux/slab.h to mm/slab.h. It is just a
refactoring patch with no code change.
In fact both the slub_def.h and slab_def.h should be moved into the mm
directory as well, but that will probably cause many merge conflicts.
Link: http://lkml.kernel.org/r/20190718180827.18758-1-longman@redhat.com
Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Waiman Long [Mon, 23 Sep 2019 22:33:46 +0000 (15:33 -0700)]
mm, slab: extend slab/shrink to shrink all memcg caches
Currently, a value of '1" is written to /sys/kernel/slab/<slab>/shrink
file to shrink the slab by flushing out all the per-cpu slabs and free
slabs in partial lists. This can be useful to squeeze out a bit more
memory under extreme condition as well as making the active object counts
in /proc/slabinfo more accurate.
This usually applies only to the root caches, as the SLUB_MEMCG_SYSFS_ON
option is usually not enabled and "slub_memcg_sysfs=1" not set. Even if
memcg sysfs is turned on, it is too cumbersome and impractical to manage
all those per-memcg sysfs files in a real production system.
So there is no practical way to shrink memcg caches. Fix this by enabling
a proper write to the shrink sysfs file of the root cache to scan all the
available memcg caches and shrink them as well. For a non-root memcg
cache (when SLUB_MEMCG_SYSFS_ON or slub_memcg_sysfs is on), only that
cache will be shrunk when written.
On a 2-socket 64-core 256-thread arm64 system with 64k page after
a parallel kernel build, the the amount of memory occupied by slabs
before shrinking slabs were:
# grep task_struct /proc/slabinfo
task_struct 53137 53192 4288 61 4 : tunables 0 0
0 : slabdata 872 872 0
# grep "^S[lRU]" /proc/meminfo
Slab: 3936832 kB
SReclaimable: 399104 kB
SUnreclaim: 3537728 kB
After shrinking slabs (by echoing "1" to all shrink files):
# grep "^S[lRU]" /proc/meminfo
Slab: 1356288 kB
SReclaimable: 263296 kB
SUnreclaim: 1092992 kB
# grep task_struct /proc/slabinfo
task_struct 2764 6832 4288 61 4 : tunables 0 0
0 : slabdata 112 112 0
Link: http://lkml.kernel.org/r/20190723151445.7385-1-longman@redhat.com
Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Colin Ian King [Mon, 23 Sep 2019 22:33:43 +0000 (15:33 -0700)]
ocfs2: fix spelling mistake "ambigous" -> "ambiguous"
There is a spelling mistake in a mlog_bug_on_msg message. Fix it.
Link: http://lkml.kernel.org/r/831bdff4-064e-038b-f45d-c4d265cbff1e@linux.alibaba.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Changwei Ge [Mon, 23 Sep 2019 22:33:40 +0000 (15:33 -0700)]
ocfs2: checkpoint appending truncate log transaction before flushing
Appending truncate log(TA) and and flushing truncate log(TF) are two
separated transactions. They can be both committed but not checkpointed.
If crash occurs then, both transaction will be replayed with several
already released to global bitmap clusters. Then truncate log will be
replayed resulting in cluster double free.
To reproduce this issue, just crash the host while punching hole to files.
Signed-off-by: Changwei Ge <gechangwei@live.cn>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Changwei Ge [Mon, 23 Sep 2019 22:33:37 +0000 (15:33 -0700)]
ocfs2: wait for recovering done after direct unlock request
There is a scenario causing ocfs2 umount hang when multiple hosts are
rebooting at the same time.
NODE1 NODE2 NODE3
send unlock requset to NODE2
dies
become recovery master
recover NODE2
find NODE2 dead
mark resource RECOVERING
directly remove lock from grant list
calculate usage but RECOVERING marked
**miss the window of purging
clear RECOVERING
To reproduce this issue, crash a host and then umount ocfs2
from another node.
To solve this, just let unlock progress wait for recovery done.
Link: http://lkml.kernel.org/r/1550124866-20367-1-git-send-email-gechangwei@live.cn
Signed-off-by: Changwei Ge <gechangwei@live.cn>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Markus Elfring [Mon, 23 Sep 2019 22:33:34 +0000 (15:33 -0700)]
ocfs2: delete unnecessary checks before brelse()
brelse() tests whether its argument is NULL and then returns immediately.
Thus the tests around the shown calls are not needed.
This issue was detected by using the Coccinelle software.
Link: http://lkml.kernel.org/r/55cde320-394b-f985-56ce-1a2abea782aa@web.de
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
zhengbin [Mon, 23 Sep 2019 22:33:30 +0000 (15:33 -0700)]
fs/ocfs2/dir.c: remove set but not used variables
Fixes gcc '-Wunused-but-set-variable' warning:
fs/ocfs2/dir.c: In function ocfs2_dx_dir_transfer_leaf:
fs/ocfs2/dir.c:3653:42: warning: variable new_list set but not used [-Wunused-but-set-variable]
Link: http://lkml.kernel.org/r/1566522588-63786-4-git-send-email-joseph.qi@linux.alibaba.com
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-by: Changwei Ge <chge@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
zhengbin [Mon, 23 Sep 2019 22:33:27 +0000 (15:33 -0700)]
fs/ocfs2/file.c: remove set but not used variables
Fixes gcc '-Wunused-but-set-variable' warning:
fs/ocfs2/file.c: In function ocfs2_prepare_inode_for_write:
fs/ocfs2/file.c:2143:9: warning: variable end set but not used [-Wunused-but-set-variable]
Link: http://lkml.kernel.org/r/1566522588-63786-3-git-send-email-joseph.qi@linux.alibaba.com
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-by: Changwei Ge <chge@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
zhengbin [Mon, 23 Sep 2019 22:33:24 +0000 (15:33 -0700)]
fs/ocfs2/namei.c: remove set but not used variables
Fixes gcc '-Wunused-but-set-variable' warning:
fs/ocfs2/namei.c: In function ocfs2_create_inode_in_orphan:
fs/ocfs2/namei.c:2503:23: warning: variable di set but not used [-Wunused-but-set-variable]
Link: http://lkml.kernel.org/r/1566522588-63786-2-git-send-email-joseph.qi@linux.alibaba.com
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-by: Changwei Ge <chge@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Guozhonghua [Mon, 23 Sep 2019 22:33:21 +0000 (15:33 -0700)]
ocfs2: remove unused ocfs2_orphan_scan_exit() declaration
ocfs2_orphan_scan_exit() is declared but not implemented. Also perform a
minor cleanup in ocfs2_link_credits()
Link: http://lkml.kernel.org/r/71604351584F6A4EBAE558C676F37CA4014FC208AC@H3CMLB12-EX.srv.huawei-3com.com
Signed-off-by: guozhonghua <guozhonghua@h3c.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Guozhonghua [Mon, 23 Sep 2019 22:33:18 +0000 (15:33 -0700)]
ocfs2: remove unused ocfs2_calc_tree_trunc_credits()
ocfs2_calc_tree_trunc_credits() is not called anywhere.
Link: http://lkml.kernel.org/r/71604351584F6A4EBAE558C676F37CA4014FC2050F@H3CMLB12-EX.srv.huawei-3com.com
Signed-off-by: guozhonghua <guozhonghua@h3c.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Greg Kroah-Hartman [Mon, 23 Sep 2019 22:33:15 +0000 (15:33 -0700)]
ocfs2: further debugfs cleanups
There is no need to check return value of debugfs_create functions, but
the last sweep through ocfs missed a number of places where this was
happening. There is also no need to save the individual dentries for the
debugfs files, as everything is can just be removed at once when the
directory is removed.
By getting rid of the file dentries for the debugfs entries, a bit of
local memory can be saved as well.
[colin.king@canonical.com: ensure ret is set to zero before returning]
Link: http://lkml.kernel.org/r/20190807121929.28918-1-colin.king@canonical.com
Link: http://lkml.kernel.org/r/20190731132119.GA12603@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Jia Guo <guojia12@huawei.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joseph Qi [Mon, 23 Sep 2019 22:33:11 +0000 (15:33 -0700)]
jbd2: remove jbd2_journal_inode_add_[write|wait]
Since ext4/ocfs2 are using jbd2_inode dirty range scoping APIs now,
jbd2_journal_inode_add_[write|wait] are not used any more, remove them.
Link: http://lkml.kernel.org/r/1562977611-8412-2-git-send-email-joseph.qi@linux.alibaba.com
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-by: Ross Zwisler <zwisler@google.com>
Acked-by: Changwei Ge <chge@linux.alibaba.com>
Cc: Gang He <ghe@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joseph Qi [Mon, 23 Sep 2019 22:33:08 +0000 (15:33 -0700)]
ocfs2: use jbd2_inode dirty range scoping
6ba0e7dc64a5 ("jbd2: introduce jbd2_inode dirty range scoping") allow us
scoping each of the inode dirty ranges associated with a given
transaction, and ext4 already does this way.
Now let's also use the newly introduced jbd2_inode dirty range scoping to
prevent us from waiting forever when trying to complete a journal
transaction in ocfs2.
Link: http://lkml.kernel.org/r/1562977611-8412-1-git-send-email-joseph.qi@linux.alibaba.com
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-by: Ross Zwisler <zwisler@google.com>
Reviewed-by: Changwei Ge <chge@linux.alibaba.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Greg Thelen [Mon, 23 Sep 2019 22:33:05 +0000 (15:33 -0700)]
kbuild: clean compressed initramfs image
Since
9e3596b0c653 ("kbuild: initramfs cleanup, set target from Kconfig")
"make clean" leaves behind compressed initramfs images. Example:
$ make defconfig
$ sed -i 's|CONFIG_INITRAMFS_SOURCE=""|CONFIG_INITRAMFS_SOURCE="/tmp/ir.cpio"|' .config
$ make olddefconfig
$ make -s
$ make -s clean
$ git clean -ndxf | grep initramfs
Would remove usr/initramfs_data.cpio.gz
clean rules do not have CONFIG_* context so they do not know which
compression format was used. Thus they don't know which files to delete.
Tell clean to delete all possible compression formats.
Once patched usr/initramfs_data.cpio.gz and friends are deleted by
"make clean".
Link: http://lkml.kernel.org/r/20190722063251.55541-1-gthelen@google.com
Fixes:
9e3596b0c653 ("kbuild: initramfs cleanup, set target from Kconfig")
Signed-off-by: Greg Thelen <gthelen@google.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vitaly Wool [Mon, 23 Sep 2019 22:33:02 +0000 (15:33 -0700)]
z3fold: fix retry mechanism in page reclaim
z3fold_page_reclaim()'s retry mechanism is broken: on a second iteration
it will have zhdr from the first one so that zhdr is no longer in line
with struct page. That leads to crashes when the system is stressed.
Fix that by moving zhdr assignment up.
While at it, protect against using already freed handles by using own
local slots structure in z3fold_page_reclaim().
Link: http://lkml.kernel.org/r/20190908162919.830388dc7404d1e2c80f4095@gmail.com
Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Reported-by: Markus Linnala <markus.linnala@gmail.com>
Reported-by: Chris Murphy <bugzilla@colorremedies.com>
Reported-by: Agustin Dall'Alba <agustin@dallalba.com.ar>
Cc: "Maciej S. Szmigiero" <mail@maciej.szmigiero.name>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Henry Burns <henrywolfeburns@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arnd Bergmann [Mon, 23 Sep 2019 22:32:59 +0000 (15:32 -0700)]
mm: add dummy can_do_mlock() helper
On kernels without CONFIG_MMU, we get a link error for the siw driver:
drivers/infiniband/sw/siw/siw_mem.o: In function `siw_umem_get':
siw_mem.c:(.text+0x4c8): undefined reference to `can_do_mlock'
This is probably not the only driver that needs the function and could
otherwise build correctly without CONFIG_MMU, so add a dummy variant that
always returns false.
Link: http://lkml.kernel.org/r/20190909204201.931830-1-arnd@arndb.de
Fixes:
2251334dcac9 ("rdma/siw: application buffer management")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Bernard Metzler <bmt@zurich.ibm.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vitaly Wool [Mon, 23 Sep 2019 22:32:56 +0000 (15:32 -0700)]
Revert "mm/z3fold.c: fix race between migration and destruction"
With the original commit applied, z3fold_zpool_destroy() may get blocked
on wait_event() for indefinite time. Revert this commit for the time
being to get rid of this problem since the issue the original commit
addresses is less severe.
Link: http://lkml.kernel.org/r/20190910123142.7a9c8d2de4d0acbc0977c602@gmail.com
Fixes:
d776aaa9895eb6eb77 ("mm/z3fold.c: fix race between migration and destruction")
Reported-by: Agustín Dall'Alba <agustin@dallalba.com.ar>
Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Vitaly Wool <vitalywool@gmail.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Jonathan Adams <jwadams@google.com>
Cc: Henry Burns <henrywolfeburns@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
OGAWA Hirofumi [Mon, 23 Sep 2019 22:32:53 +0000 (15:32 -0700)]
fat: work around race with userspace's read via blockdev while mounting
If userspace reads the buffer via blockdev while mounting,
sb_getblk()+modify can race with buffer read via blockdev.
For example,
FS userspace
bh = sb_getblk()
modify bh->b_data
read
ll_rw_block(bh)
fill bh->b_data by on-disk data
/* lost modified data by FS */
set_buffer_uptodate(bh)
set_buffer_uptodate(bh)
Userspace should not use the blockdev while mounting though, the udev
seems to be already doing this. Although I think the udev should try to
avoid this, workaround the race by small overhead.
Link: http://lkml.kernel.org/r/87pnk7l3sw.fsf_-_@mail.parknet.co.jp
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Reported-by: Jan Stancek <jstancek@redhat.com>
Tested-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 22 Sep 2019 19:04:59 +0000 (12:04 -0700)]
Merge tag 'for-v5.4' of git://git./linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
"Core:
- Ensure HWMON devices are registered with valid names
- Fix device wakeup code
Drivers:
- bq25890_charger: Add BQ25895 support
- axp288_fuel_gauge: Add Minix Neo Z83-4 to blacklist
- sc27xx: improve battery calibration
- misc small fixes all over drivers"
* tag 'for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (24 commits)
power: supply: cpcap-charger: Enable vbus boost voltage
power: supply: sc27xx: Add POWER_SUPPLY_PROP_CALIBRATE attribute
power: supply: sc27xx: Optimize the battery capacity calibration
power: supply: sc27xx: Make sure the alarm capacity is larger than 0
power: supply: sc27xx: Fix the the accuracy issue of coulomb calculation
power: supply: sc27xx: Fix conditon to enable the FGU interrupt
power: supply: sc27xx: Add POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN attribute
power: supply: max77650: add MODULE_ALIAS()
power: supply: isp1704: remove redundant assignment to variable ret
power: supply: bq25890_charger: Add the BQ25895 part
power: supply: sc27xx: Replace devm_add_action() followed by failure action with devm_add_action_or_reset()
power: supply: sc27xx: Introduce local variable 'struct device *dev'
power: reset: reboot-mode: Fix author email format
power: supply: ab8500: remove set but not used variables 'vbup33_vrtcn' and 'bup_vch_range'
power: supply: max17042_battery: Fix a typo in function names
power: reset: gpio-restart: Fix typo when gpio reset is not found
power: supply: Init device wakeup after device_add()
power: supply: ab8500_charger: Mark expected switch fall-through
power: supply: sbs-battery: only return health when battery present
MAINTAINERS: N900: Remove isp1704_charger.h record
...
Linus Torvalds [Sun, 22 Sep 2019 19:02:21 +0000 (12:02 -0700)]
Merge tag 'hsi-for-5.4' of git://git./linux/kernel/git/sre/linux-hsi
Pull HSI updates from Sebastian Reichel:
"Misc cleanups"
* tag 'hsi-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
HSI: Remove dev_err() usage after platform_get_irq()
HSI: ssi_protocol: Mark expected switch fall-throughs
Linus Torvalds [Sun, 22 Sep 2019 18:31:15 +0000 (11:31 -0700)]
firmware: bcm47xx_nvram: _really_ correct size_t printf format
Commit
feb4eb060c3a ("firmware: bcm47xx_nvram: Correct size_t printf
format") was wrong, and changed a printout of 'header.len' - which is an
u32 type - to use '%zu'.
It apparently did pattern matching on the other case, where it printed
out 'nvram_len', which is indeed of type 'size_t'.
Rather than undoing the change, this just makes it use the variable that
the change seemed to expect to be used.
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Paul Burton <paul.burton@mips.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 22 Sep 2019 18:15:14 +0000 (11:15 -0700)]
modules: make MODULE_IMPORT_NS() work even when modular builds are disabled
It's an unusual configuration, and was apparently never tested, and not
caught in linux-next because of a combination of travels and it making
it into the tree too late.
The fix is to simply move the #define to outside the CONFIG_MODULE
section, since MODULE_INFO() will do the right thing.
Cc: Martijn Coenen <maco@android.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Matthias Maennich <maennich@google.com>
Cc: Jessica Yu <jeyu@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 22 Sep 2019 18:05:43 +0000 (11:05 -0700)]
Merge tag 'rtc-5.4' of git://git./linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"Two new drivers and the new pcf2127 feature make the bulk of the
additions. The rest are the usual fixes and new features.
Subsystem:
- add debug message when registration fails
New drivers:
- Amlogic Virtual Wake
- Freescale FlexTimer Module alarm
Drivers:
- remove superfluous error messages
- convert to i2c_new_dummy_device and devm_i2c_new_dummy_device
- Remove dev_err() usage after platform_get_irq()
- Set RTC range for: pcf2123, pcf8563, snvs.
- pcf2127: tamper detection and watchdog support
- pcf85363: fix regmap issue
- sun6i: H6 support
- remove w90x900/nuc900 driver"
* tag 'rtc-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (51 commits)
rtc: meson: mark PM functions as __maybe_unused
rtc: sc27xx: Remove clearing SPRD_RTC_POWEROFF_ALM_FLAG flag
dt-bindings: rtc: ds1307: add rx8130 compatible
rtc: sun6i: Allow using as wakeup source from suspend
rtc: pcf8563: let the core handle range offsetting
rtc: pcf8563: remove useless indirection
rtc: pcf8563: convert to devm_rtc_allocate_device
rtc: pcf8563: add Microcrystal RV8564 compatible
rtc: pcf8563: add Epson RTC8564 compatible
rtc: s35390a: convert to devm_i2c_new_dummy_device()
rtc: max77686: convert to devm_i2c_new_dummy_device()
rtc: pcf85363/pcf85263: fix regmap error in set_time
rtc: snvs: switch to rtc_time64_to_tm/rtc_tm_to_time64
rtc: snvs: set range
rtc: snvs: fix possible race condition
rtc: pcf2127: bugfix: watchdog build dependency
rtc: pcf2127: add tamper detection support
rtc: pcf2127: add watchdog feature support
rtc: pcf2127: bugfix: read rtc disables watchdog
rtc: pcf2127: cleanup register and bit defines
...
Linus Torvalds [Sun, 22 Sep 2019 17:58:15 +0000 (10:58 -0700)]
Merge tag 'rpmsg-v5.4' of git://git./linux/kernel/git/andersson/remoteproc
Pull rpmsg updates from Bjorn Andersson:
"This contains updates to make the rpmsg sample driver more useful,
fixes the naming of GLINK devices to avoid naming collisions and a few
minor bug fixes. It also updates MAINTAINERS to reflect the move to
kernel.org"
* tag 'rpmsg-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
rpmsg: glink-smem: Name the edge based on parent remoteproc
rpmsg: glink: Use struct_size() helper
rpmsg: virtio_rpmsg_bus: replace "%p" with "%pK"
MAINTAINERS: rpmsg: fix git tree location
rpmsg: core: fix comments
samples/rpmsg: Introduce a module parameter for message count
samples/rpmsg: Replace print_hex_dump() with print_hex_dump_debug()
Linus Torvalds [Sun, 22 Sep 2019 17:55:08 +0000 (10:55 -0700)]
Merge tag 'rproc-v5.4' of git://git./linux/kernel/git/andersson/remoteproc
Pull remoteproc updates from Bjorn Andersson:
"This exposes the remoteproc's name in sysfs, allows stm32 to enter
platform standby and provides bug fixes for stm32 and Qualcomm's modem
remoteproc drivers. Finally it updates MAINTAINERS to reflect the move
to kernel.org"
* tag 'rproc-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
MAINTAINERS: remoteproc: update git tree location
remoteproc: Remove dev_err() usage after platform_get_irq()
remoteproc: stm32: manage the get_irq probe defer case
remoteproc: stm32: clear MCU PDDS at firmware start
remoteproc: qcom: q6v5-mss: fixup q6v5_pds_enable error handling
remoteproc: Add a sysfs interface for name
remoteproc: qcom: Move glink_ssr notification after stop
Linus Torvalds [Sun, 22 Sep 2019 17:52:23 +0000 (10:52 -0700)]
Merge tag 'soundwire-5.4-rc1' of git://git./linux/kernel/git/vkoul/soundwire
Pull soundwire updates from Vinod Koul:
"This includes DT support thanks to Srini and more work done by Intel
(Pierre) on improving cadence and intel support.
Summary:
- Add DT bindings and DT support in core
- Add debugfs support for soundwire properties
- Improvements on streaming handling to core
- Improved handling of Cadence module
- More updates and improvements to Intel driver"
* tag 'soundwire-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: (30 commits)
soundwire: stream: make stream name a const pointer
soundwire: Add compute_params callback
soundwire: core: add device tree support for slave devices
dt-bindings: soundwire: add slave bindings
soundwire: bus: set initial value to port_status
soundwire: intel: handle disabled links
soundwire: intel: add debugfs register dump
soundwire: cadence_master: add debugfs register dump
soundwire: add debugfs support
soundwire: intel: remove unused variables
soundwire: intel: move shutdown() callback and don't export symbol
soundwire: cadence_master: add kernel parameter to override interrupt mask
soundwire: intel_init: add kernel module parameter to filter out links
soundwire: cadence_master: fix divider setting in clock register
soundwire: cadence_master: make use of mclk_freq property
soundwire: intel: read mclk_freq property from firmware
soundwire: add new mclk_freq field for properties
soundwire: stream: remove unnecessary variable initializations
soundwire: stream: fix disable sequence
soundwire: include mod_devicetable.h to avoid compiling warnings
...
Linus Torvalds [Sun, 22 Sep 2019 17:34:46 +0000 (10:34 -0700)]
Merge tag 'modules-for-v5.4' of git://git./linux/kernel/git/jeyu/linux
Pull modules updates from Jessica Yu:
"The main bulk of this pull request introduces a new exported symbol
namespaces feature. The number of exported symbols is increasingly
growing with each release (we're at about 31k exports as of 5.3-rc7)
and we currently have no way of visualizing how these symbols are
"clustered" or making sense of this huge export surface.
Namespacing exported symbols allows kernel developers to more
explicitly partition and categorize exported symbols, as well as more
easily limiting the availability of namespaced symbols to other parts
of the kernel. For starters, we have introduced the USB_STORAGE
namespace to demonstrate the API's usage. I have briefly summarized
the feature and its main motivations in the tag below.
Summary:
- Introduce exported symbol namespaces.
This new feature allows subsystem maintainers to partition and
categorize their exported symbols into explicit namespaces. Module
authors are now required to import the namespaces they need.
Some of the main motivations of this feature include: allowing
kernel developers to better manage the export surface, allow
subsystem maintainers to explicitly state that usage of some
exported symbols should only be limited to certain users (think:
inter-module or inter-driver symbols, debugging symbols, etc), as
well as more easily limiting the availability of namespaced symbols
to other parts of the kernel.
With the module import requirement, it is also easier to spot the
misuse of exported symbols during patch review.
Two new macros are introduced: EXPORT_SYMBOL_NS() and
EXPORT_SYMBOL_NS_GPL(). The API is thoroughly documented in
Documentation/kbuild/namespaces.rst.
- Some small code and kbuild cleanups here and there"
* tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module: Remove leftover '#undef' from export header
module: remove unneeded casts in cmp_name()
module: move CONFIG_UNUSED_SYMBOLS to the sub-menu of MODULES
module: remove redundant 'depends on MODULES'
module: Fix link failure due to invalid relocation on namespace offset
usb-storage: export symbols in USB_STORAGE namespace
usb-storage: remove single-use define for debugging
docs: Add documentation for Symbol Namespaces
scripts: Coccinelle script for namespace dependencies.
modpost: add support for generating namespace dependencies
export: allow definition default namespaces in Makefiles or sources
module: add config option MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS
modpost: add support for symbol namespaces
module: add support for symbol namespaces.
export: explicitly align struct kernel_symbol
module: support reading multiple values per modinfo tag
Linus Torvalds [Sun, 22 Sep 2019 16:39:09 +0000 (09:39 -0700)]
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- fix various clang build and cppcheck issues
- switch ARM to use new common outgoing-CPU-notification code
- add some additional explanation about the boot code
- kbuild "make clean" fixes
- get rid of another "(____ptrval____)", this time for the VDSO code
- avoid treating cache maintenance faults as a write
- add a frame pointer unwinder implementation for clang
- add EDAC support for Aurora L2 cache
- improve robustness of adjust_lowmem_bounds() finding the bounds of
lowmem.
- add reset control for AMBA primecell devices
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (24 commits)
ARM: 8906/1: drivers/amba: add reset control to amba bus probe
ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newer
ARM: 8904/1: skip nomap memblocks while finding the lowmem/highmem boundary
ARM: 8903/1: ensure that usable memory in bank 0 starts from a PMD-aligned address
ARM: 8891/1: EDAC: armada_xp: Add support for more SoCs
ARM: 8888/1: EDAC: Add driver for the Marvell Armada XP SDRAM and L2 cache ECC
ARM: 8892/1: EDAC: Add missing debugfs_create_x32 wrapper
ARM: 8890/1: l2x0: add marvell,ecc-enable property for aurora
ARM: 8889/1: dt-bindings: document marvell,ecc-enable binding
ARM: 8886/1: l2x0: support parity-enable/disable on aurora
ARM: 8885/1: aurora-l2: add defines for parity and ECC registers
ARM: 8887/1: aurora-l2: add prefix to MAX_RANGE_SIZE
ARM: 8902/1: l2c: move cache-aurora-l2.h to asm/hardware
ARM: 8900/1: UNWINDER_FRAME_POINTER implementation for Clang
ARM: 8898/1: mm: Don't treat faults reported from cache maintenance as writes
ARM: 8896/1: VDSO: Don't leak kernel addresses
ARM: 8895/1: visit mach-* and plat-* directories when cleaning
ARM: 8894/1: boot: Replace open-coded nop with macro
ARM: 8893/1: boot: Explain the 8 nops
ARM: 8876/1: fix O= building with CONFIG_FPE_FASTFPE
...
Linus Torvalds [Sun, 22 Sep 2019 16:30:30 +0000 (09:30 -0700)]
Merge tag 'mips_5.4' of git://git./linux/kernel/git/mips/linux
Pull MIPS updates from Paul Burton:
"Main MIPS changes:
- boot_mem_map is removed, providing a nice cleanup made possible by
the recent removal of bootmem.
- Some fixes to atomics, in general providing compiler barriers for
smp_mb__{before,after}_atomic plus fixes specific to Loongson CPUs
or MIPS32 systems using cmpxchg64().
- Conversion to the new generic VDSO infrastructure courtesy of
Vincenzo Frascino.
- Removal of undefined behavior in set_io_port_base(), fixing the
behavior of some MIPS kernel configurations when built with recent
clang versions.
- Initial MIPS32 huge page support, functional on at least Ingenic
SoCs.
- pte_special() is now supported for some configurations, allowing
among other things generic fast GUP to be used.
- Miscellaneous fixes & cleanups.
And platform specific changes:
- Major improvements to Ingenic SoC support from Paul Cercueil,
mostly enabled by the inclusion of the new TCU (timer-counter unit)
drivers he's spent a very patient year or so working on. Plus some
fixes for X1000 SoCs from Zhou Yanjie.
- Netgear R6200 v1 systems are now supported by the bcm47xx platform.
- DT updates for BMIPS, Lantiq & Microsemi Ocelot systems"
* tag 'mips_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (89 commits)
MIPS: Detect bad _PFN_SHIFT values
MIPS: Disable pte_special() for MIPS32 with RiXi
MIPS: ralink: deactivate PCI support for SOC_MT7621
mips: compat: vdso: Use legacy syscalls as fallback
MIPS: Drop Loongson _CACHE_* definitions
MIPS: tlbex: Remove cpu_has_local_ebase
MIPS: tlbex: Simplify r3k check
MIPS: Select R3k-style TLB in Kconfig
MIPS: PCI: refactor ioc3 special handling
mips: remove ioremap_cachable
mips/atomic: Fix smp_mb__{before,after}_atomic()
mips/atomic: Fix loongson_llsc_mb() wreckage
mips/atomic: Fix cmpxchg64 barriers
MIPS: Octeon: remove duplicated include from dma-octeon.c
firmware: bcm47xx_nvram: Allow COMPILE_TEST
firmware: bcm47xx_nvram: Correct size_t printf format
MIPS: Treat Loongson Extensions as ASEs
MIPS: Remove dev_err() usage after platform_get_irq()
MIPS: dts: mscc: describe the PTP ready interrupt
MIPS: dts: mscc: describe the PTP register range
...
Linus Torvalds [Sat, 21 Sep 2019 21:42:59 +0000 (14:42 -0700)]
Merge tag 'gfs2-for-5.4' of git://git./linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
- Use asynchronous glocks and timeouts to recover from deadlocks during
rename and exchange: the lock ordering constraints the vfs uses are
not sufficient to prevent deadlocks across multiple nodes.
- Add support for IOMAP_ZERO and use iomap_zero_range to replace gfs2
specific code.
- Various other minor fixes and cleanups.
* tag 'gfs2-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: clear buf_in_tr when ending a transaction in sweep_bh_for_rgrps
gfs2: Improve mmap write vs. truncate consistency
gfs2: Use async glocks for rename
gfs2: create function gfs2_glock_update_hold_time
gfs2: separate holder for rgrps in gfs2_rename
gfs2: Delete an unnecessary check before brelse()
gfs2: Minor PAGE_SIZE arithmetic cleanups
gfs2: Fix recovery slot bumping
gfs2: Fix possible fs name overflows
gfs2: untangle the logic in gfs2_drevalidate
gfs2: Always mark inode dirty in fallocate
gfs2: Minor gfs2_alloc_inode cleanup
gfs2: implement gfs2_block_zero_range using iomap_zero_range
gfs2: Add support for IOMAP_ZERO
gfs2: gfs2_iomap_begin cleanup
Linus Torvalds [Sat, 21 Sep 2019 21:26:33 +0000 (14:26 -0700)]
Merge tag 'f2fs-for-5.4' of git://git./linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, we introduced casefolding support in f2fs, and fixed
various bugs in individual features such as IO alignment,
checkpoint=disable, quota, and swapfile.
Enhancement:
- support casefolding w/ enhancement in ext4
- support fiemap for directory
- support FS_IO_GET|SET_FSLABEL
Bug fix:
- fix IO stuck during checkpoint=disable
- avoid infinite GC loop
- fix panic/overflow related to IO alignment feature
- fix livelock in swap file
- fix discard command leak
- disallow dio for atomic_write"
* tag 'f2fs-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (51 commits)
f2fs: add a condition to detect overflow in f2fs_ioc_gc_range()
f2fs: fix to add missing F2FS_IO_ALIGNED() condition
f2fs: fix to fallback to buffered IO in IO aligned mode
f2fs: fix to handle error path correctly in f2fs_map_blocks
f2fs: fix extent corrupotion during directIO in LFS mode
f2fs: check all the data segments against all node ones
f2fs: Add a small clarification to CONFIG_FS_F2FS_FS_SECURITY
f2fs: fix inode rwsem regression
f2fs: fix to avoid accessing uninitialized field of inode page in is_alive()
f2fs: avoid infinite GC loop due to stale atomic files
f2fs: Fix indefinite loop in f2fs_gc()
f2fs: convert inline_data in prior to i_size_write
f2fs: fix error path of f2fs_convert_inline_page()
f2fs: add missing documents of reserve_root/resuid/resgid
f2fs: fix flushing node pages when checkpoint is disabled
f2fs: enhance f2fs_is_checkpoint_ready()'s readability
f2fs: clean up __bio_alloc()'s parameter
f2fs: fix wrong error injection path in inc_valid_block_count()
f2fs: fix to writeout dirty inode during node flush
f2fs: optimize case-insensitive lookups
...
Linus Torvalds [Sat, 21 Sep 2019 20:53:34 +0000 (13:53 -0700)]
Merge tag 'for_v5.4-rc1' of git://git./linux/kernel/git/jack/linux-fs
Pull ext2, quota, udf fixes and cleanups from Jan Kara:
- two small quota fixes (in grace time handling and possible missed
accounting of preallocated blocks beyond EOF).
- some ext2 cleanups
- udf fixes for better compatibility with Windows 10 generated media
(named streams, write-protection using domain-identifier, placement
of volume recognition sequence)
- some udf cleanups
* tag 'for_v5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
quota: fix wrong condition in is_quota_modification()
fs-udf: Delete an unnecessary check before brelse()
ext2: Delete an unnecessary check before brelse()
udf: Drop forward function declarations
udf: Verify domain identifier fields
udf: augment UDF permissions on new inodes
udf: Use dynamic debug infrastructure
udf: reduce leakage of blocks related to named streams
udf: prevent allocation beyond UDF partition
quota: fix condition for resetting time limit in do_set_dqblk()
ext2: code cleanup for ext2_free_blocks()
ext2: fix block range in ext2_data_block_valid()
udf: support 2048-byte spacing of VRS descriptors on 4K media
udf: refactor VRS descriptor identification
Linus Torvalds [Sat, 21 Sep 2019 20:37:39 +0000 (13:37 -0700)]
Merge tag 'ext4_for_linus' of git://git./linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Added new ext4 debugging ioctls to allow userspace to get information
about the state of the extent status cache.
Dropped workaround for pre-1970 dates which were encoded incorrectly
in pre-4.4 kernels. Since both the kernel correctly generates, and
e2fsck detects and fixes this issue for the past four years, it'e time
to drop the workaround. (Also, it's not like files with dates in the
distant past were all that common in the first place.)
A lot of miscellaneous bug fixes and cleanups, including some ext4
Documentation fixes. Also included are two minor bug fixes in
fs/unicode"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (21 commits)
unicode: make array 'token' static const, makes object smaller
unicode: Move static keyword to the front of declarations
ext4: add missing bigalloc documentation.
ext4: fix kernel oops caused by spurious casefold flag
ext4: fix integer overflow when calculating commit interval
ext4: use percpu_counters for extent_status cache hits/misses
ext4: fix potential use after free after remounting with noblock_validity
jbd2: add missing tracepoint for reserved handle
ext4: fix punch hole for inline_data file systems
ext4: rework reserved cluster accounting when invalidating pages
ext4: documentation fixes
ext4: treat buffers with write errors as containing valid data
ext4: fix warning inside ext4_convert_unwritten_extents_endio
ext4: set error return correctly when ext4_htree_store_dirent fails
ext4: drop legacy pre-1970 encoding workaround
ext4: add new ioctl EXT4_IOC_GET_ES_CACHE
ext4: add a new ioctl EXT4_IOC_GETSTATE
ext4: add a new ioctl EXT4_IOC_CLEAR_ES_CACHE
jbd2: flush_descriptor(): Do not decrease buffer head's ref count
ext4: remove unnecessary error check
...
Linus Torvalds [Sat, 21 Sep 2019 18:10:16 +0000 (11:10 -0700)]
Merge tag 'upstream-5.4-rc1' of git://git./linux/kernel/git/rw/ubifs
Pull UBI, UBIFS and JFFS2 updates from Richard Weinberger:
"UBI:
- Be less stupid when placing a fastmap anchor
- Try harder to get an empty PEB in case of contention
- Make ubiblock to warn if image is not a multiple of 512
UBIFS:
- Various fixes in error paths
JFFS2:
- Various fixes in error paths"
* tag 'upstream-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
jffs2: Fix memory leak in jffs2_scan_eraseblock() error path
jffs2: Remove jffs2_gc_fetch_page and jffs2_gc_release_page
jffs2: Fix possible null-pointer dereferences in jffs2_add_frag_to_fragtree()
ubi: block: Warn if volume size is not multiple of 512
ubifs: Fix memory leak bug in alloc_ubifs_info() error path
ubifs: Fix memory leak in __ubifs_node_verify_hmac error path
ubifs: Fix memory leak in read_znode() error path
ubi: ubi_wl_get_peb: Increase the number of attempts while getting PEB
ubi: Don't do anchor move within fastmap area
ubifs: Remove redundant assignment to pointer fname
Linus Torvalds [Sat, 21 Sep 2019 18:07:02 +0000 (11:07 -0700)]
Merge tag 'for-linus-5.4-rc1' of git://git./linux/kernel/git/rw/uml
Pull UML updates from Richard Weinberger:
- virtio support
- fixes for our new time travel mode
- various improvements to make lockdep and kasan work better
- SPDX header updates
* tag 'for-linus-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: (25 commits)
um: irq: Fix LAST_IRQ usage in init_IRQ()
um: Add SPDX headers for files in arch/um/include
um: Add SPDX headers for files in arch/um/os-Linux
um: Add SPDX headers to files in arch/um/kernel/
um: Add SPDX headers for files in arch/um/drivers
um: virtio: Implement VHOST_USER_PROTOCOL_F_REPLY_ACK
um: virtio: Implement VHOST_USER_PROTOCOL_F_SLAVE_REQ
um: drivers: Add virtio vhost-user driver
um: Use real DMA barriers
um: Don't use generic barrier.h
um: time-travel: Restrict time update in IRQ handler
um: time-travel: Fix periodic timers
um: Enable CONFIG_CONSTRUCTORS
um: Place (soft)irq text with macros
um: Fix VDSO compiler warning
um: Implement TRACE_IRQFLAGS_SUPPORT
um: Remove misleading #define ARCh_IRQ_ENABLED
um: Avoid using uninitialized regs
um: Remove sig_info[SIGALRM]
um: Error handling fixes in vector drivers
...
Linus Torvalds [Sat, 21 Sep 2019 17:59:54 +0000 (10:59 -0700)]
Merge tag 'mtd/for-5.4' of git://git./linux/kernel/git/mtd/linux
Pull MTD updates from Richard Weinberger:
"MTD core changes:
- add debugfs nodes for querying the flash name and id
- mtd parser reorganization
SPI NOR core changes:
- always use bounce buffer for register read/writes
- move m25p80 code in spi-nor.c
- rework hwcaps selection for the spi-mem case
- rework the core in order to move the manufacturer specific code out
of it:
- regroup flash parameters in 'struct spi_nor_flash_parameter'
- add default_init() and post_sfdp() hooks to tweak the flash
parameters
- introduce the ->set_4byte(), ->convert_addr() and ->setup()
methods, to deal with manufacturer specific code
- rework the SPI NOR lock/unlock logic
- fix an error code in spi_nor_read_raw()
- fix a memory leak bug
- enable the debugfs for the partname and partid
- add support for few flashes
SPI NOR controller drivers changes:
- intel-spi:
- Whitelist 4B read commands
- Add support for Intel Tiger Lake SPI serial flash
- aspeed-smc: Add of_node_put()
- hisi-sfc: add of_node_put()
- cadence-quadspi: Fix QSPI RCU Schedule Stall
NAND core:
- Fixing typos
- Adding missing of_node_put() in various drivers
Raw NAND controller drivers:
- Macronix: new controller driver
- Omap2: fix the number of bitflips returned
- Brcmnand: fix a pointer not iterating over all the page chunks
- W90x900: driver removed
- Onenand: fix a memory leak
- Sharpsl: missing include guard
- STM32: avoid warnings when building with W=1
- Ingenic: fix a coccinelle warning
- r852: call a helper to simplify the code
CFI core:
- Kill useless initializer in mtd_do_chip_probe()
- Fix a rare write failure seen on some cfi_cmdset_0002 compliant
Parallel NORs
- Bunch of cleanups for cfi_cmdset_0002 driver's write functions by
Tokunori Ikegami"
* tag 'mtd/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (77 commits)
mtd: pmc551: Remove set but not used variable 'soff_lo'
mtd: cfi_cmdset_0002: Fix do_erase_chip() to get chip as erasing mode
mtd: sm_ftl: Fix memory leak in sm_init_zone() error path
mtd: parsers: Move CMDLINE parser
mtd: parsers: Move OF parser
mtd: parsers: Move BCM63xx parser
mtd: parsers: Move BCM47xx parser
mtd: parsers: Move TI AR7 parser
mtd: pismo: Simplify getting the adapter of a client
mtd: phram: Module parameters add writable permissions
mtd: pxa2xx: Use ioremap_cache insted of ioremap_cached
mtd: spi-nor: Rename "n25q512a" to "mt25qu512a (n25q512a)"
mtd: spi-nor: Add support for mt35xu02g
mtd: rawnand: omap2: Fix number of bitflips reporting with ELM
mtd: rawnand: brcmnand: Fix ecc chunk calculation for erased page bitfips
mtd: spi-nor: remove superfluous pass of nor->info->sector_size
mtd: spi-nor: enable the debugfs for the partname and partid
mtd: mtdcore: add debugfs nodes for querying the flash name and id
mtd: spi-nor: hisi-sfc: Add of_node_put() before break
mtd: spi-nor: aspeed-smc: Add of_node_put()
...
Linus Torvalds [Sat, 21 Sep 2019 17:55:29 +0000 (10:55 -0700)]
Merge tag 'libnvdimm-for-5.4' of git://git./linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"Some reworks to better support nvdimms on powerpc and an nvdimm
security interface update:
- Rework the nvdimm core to accommodate architectures with different
page sizes and ones that can change supported huge page sizes at
boot time rather than a compile time constant.
- Introduce a distinct 'frozen' attribute for the nvdimm security
state since it is independent of the locked state.
- Miscellaneous fixups"
* tag 'libnvdimm-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm: Use PAGE_SIZE instead of SZ_4K for align check
libnvdimm/label: Remove the dpa align check
libnvdimm/pfn_dev: Add page size and struct page size to pfn superblock
libnvdimm/pfn_dev: Add a build check to make sure we notice when struct page size change
libnvdimm/pmem: Advance namespace seed for specific probe errors
libnvdimm/region: Rewrite _probe_success() to _advance_seeds()
libnvdimm/security: Consolidate 'security' operations
libnvdimm/security: Tighten scope of nvdimm->busy vs security operations
libnvdimm/security: Introduce a 'frozen' attribute
libnvdimm, region: Use struct_size() in kzalloc()
tools/testing/nvdimm: Fix fallthrough warning
libnvdimm/of_pmem: Provide a unique name for bus provider
Linus Torvalds [Sat, 21 Sep 2019 17:50:15 +0000 (10:50 -0700)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This is mostly update of the usual drivers: qla2xxx, ufs, smartpqi,
lpfc, hisi_sas, qedf, mpt3sas; plus a whole load of minor updates. The
only core change this time around is the addition of request batching
for virtio. Since batching requires an additional flag to use, it
should be invisible to the rest of the drivers"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (264 commits)
scsi: hisi_sas: Fix the conflict between device gone and host reset
scsi: hisi_sas: Add BIST support for phy loopback
scsi: hisi_sas: Add hisi_sas_debugfs_alloc() to centralise allocation
scsi: hisi_sas: Remove some unused function arguments
scsi: hisi_sas: Remove redundant work declaration
scsi: hisi_sas: Remove hisi_sas_hw.slot_complete
scsi: hisi_sas: Assign NCQ tag for all NCQ commands
scsi: hisi_sas: Update all the registers after suspend and resume
scsi: hisi_sas: Retry 3 times TMF IO for SAS disks when init device
scsi: hisi_sas: Remove sleep after issue phy reset if sas_smp_phy_control() fails
scsi: hisi_sas: Directly return when running I_T_nexus reset if phy disabled
scsi: hisi_sas: Use true/false as input parameter of sas_phy_reset()
scsi: hisi_sas: add debugfs auto-trigger for internal abort time out
scsi: virtio_scsi: unplug LUNs when events missed
scsi: scsi_dh_rdac: zero cdb in send_mode_select()
scsi: fcoe: fix null-ptr-deref Read in fc_release_transport
scsi: ufs-hisi: use devm_platform_ioremap_resource() to simplify code
scsi: ufshcd: use devm_platform_ioremap_resource() to simplify code
scsi: hisi_sas: use devm_platform_ioremap_resource() to simplify code
scsi: ufs: Use kmemdup in ufshcd_read_string_desc()
...
Linus Torvalds [Sat, 21 Sep 2019 17:40:37 +0000 (10:40 -0700)]
Merge tag 'for-5.4/dm-changes' of git://git./linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
- crypto and DM crypt advances that allow the crypto API to reclaim
implementation details that do not belong in DM crypt. The wrapper
template for ESSIV generation that was factored out will also be used
by fscrypt in the future.
- Add root hash pkcs#7 signature verification to the DM verity target.
- Add a new "clone" DM target that allows for efficient remote
replication of a device.
- Enhance DM bufio's cache to be tailored to each client based on use.
Clients that make heavy use of the cache get more of it, and those
that use less have reduced cache usage.
- Add a new DM_GET_TARGET_VERSION ioctl to allow userspace to query the
version number of a DM target (even if the associated module isn't
yet loaded).
- Fix invalid memory access in DM zoned target.
- Fix the max_discard_sectors limit advertised by the DM raid target;
it was mistakenly storing the limit in bytes rather than sectors.
- Small optimizations and cleanups in DM writecache target.
- Various fixes and cleanups in DM core, DM raid1 and space map portion
of DM persistent data library.
* tag 'for-5.4/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (22 commits)
dm: introduce DM_GET_TARGET_VERSION
dm bufio: introduce a global cache replacement
dm bufio: remove old-style buffer cleanup
dm bufio: introduce a global queue
dm bufio: refactor adjust_total_allocated
dm bufio: call adjust_total_allocated from __link_buffer and __unlink_buffer
dm: add clone target
dm raid: fix updating of max_discard_sectors limit
dm writecache: skip writecache_wait for pmem mode
dm stats: use struct_size() helper
dm crypt: omit parsing of the encapsulated cipher
dm crypt: switch to ESSIV crypto API template
crypto: essiv - create wrapper template for ESSIV generation
dm space map common: remove check for impossible sm_find_free() return value
dm raid1: use struct_size() with kzalloc()
dm writecache: optimize performance by sorting the blocks for writeback_all
dm writecache: add unlikely for getting two block with same LBA
dm writecache: remove unused member pointer in writeback_struct
dm zoned: fix invalid memory access
dm verity: add root hash pkcs#7 signature verification
...
Linus Torvalds [Sat, 21 Sep 2019 17:26:24 +0000 (10:26 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma
Pull RDMA subsystem updates from Jason Gunthorpe:
"This cycle mainly saw lots of bug fixes and clean up code across the
core code and several drivers, few new functional changes were made.
- Many cleanup and bug fixes for hns
- Various small bug fixes and cleanups in hfi1, mlx5, usnic, qed,
bnxt_re, efa
- Share the query_port code between all the iWarp drivers
- General rework and cleanup of the ODP MR umem code to fit better
with the mmu notifier get/put scheme
- Support rdma netlink in non init_net name spaces
- mlx5 support for XRC devx and DC ODP"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (99 commits)
RDMA: Fix double-free in srq creation error flow
RDMA/efa: Fix incorrect error print
IB/mlx5: Free mpi in mp_slave mode
IB/mlx5: Use the original address for the page during free_pages
RDMA/bnxt_re: Fix spelling mistake "missin_resp" -> "missing_resp"
RDMA/hns: Package operations of rq inline buffer into separate functions
RDMA/hns: Optimize cmd init and mode selection for hip08
IB/hfi1: Define variables as unsigned long to fix KASAN warning
IB/{rdmavt, hfi1, qib}: Add a counter for credit waits
IB/hfi1: Add traces for TID RDMA READ
RDMA/siw: Relax from kmap_atomic() use in TX path
IB/iser: Support up to 16MB data transfer in a single command
RDMA/siw: Fix page address mapping in TX path
RDMA: Fix goto target to release the allocated memory
RDMA/usnic: Avoid overly large buffers on stack
RDMA/odp: Add missing cast for 32 bit
RDMA/hns: Use devm_platform_ioremap_resource() to simplify code
Documentation/infiniband: update name of some functions
RDMA/cma: Fix false error message
RDMA/hns: Fix wrong assignment of qp_access_flags
...
Linus Torvalds [Sat, 21 Sep 2019 17:07:42 +0000 (10:07 -0700)]
Merge tag 'for-linus-hmm' of git://git./linux/kernel/git/rdma/rdma
Pull hmm updates from Jason Gunthorpe:
"This is more cleanup and consolidation of the hmm APIs and the very
strongly related mmu_notifier interfaces. Many places across the tree
using these interfaces are touched in the process. Beyond that a
cleanup to the page walker API and a few memremap related changes
round out the series:
- General improvement of hmm_range_fault() and related APIs, more
documentation, bug fixes from testing, API simplification &
consolidation, and unused API removal
- Simplify the hmm related kconfigs to HMM_MIRROR and DEVICE_PRIVATE,
and make them internal kconfig selects
- Hoist a lot of code related to mmu notifier attachment out of
drivers by using a refcount get/put attachment idiom and remove the
convoluted mmu_notifier_unregister_no_release() and related APIs.
- General API improvement for the migrate_vma API and revision of its
only user in nouveau
- Annotate mmu_notifiers with lockdep and sleeping region debugging
Two series unrelated to HMM or mmu_notifiers came along due to
dependencies:
- Allow pagemap's memremap_pages family of APIs to work without
providing a struct device
- Make walk_page_range() and related use a constant structure for
function pointers"
* tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (75 commits)
libnvdimm: Enable unit test infrastructure compile checks
mm, notifier: Catch sleeping/blocking for !blockable
kernel.h: Add non_block_start/end()
drm/radeon: guard against calling an unpaired radeon_mn_unregister()
csky: add missing brackets in a macro for tlb.h
pagewalk: use lockdep_assert_held for locking validation
pagewalk: separate function pointers from iterator data
mm: split out a new pagewalk.h header from mm.h
mm/mmu_notifiers: annotate with might_sleep()
mm/mmu_notifiers: prime lockdep
mm/mmu_notifiers: add a lockdep map for invalidate_range_start/end
mm/mmu_notifiers: remove the __mmu_notifier_invalidate_range_start/end exports
mm/hmm: hmm_range_fault() infinite loop
mm/hmm: hmm_range_fault() NULL pointer bug
mm/hmm: fix hmm_range_fault()'s handling of swapped out pages
mm/mmu_notifiers: remove unregister_no_release
RDMA/odp: remove ib_ucontext from ib_umem
RDMA/odp: use mmu_notifier_get/put for 'struct ib_ucontext_per_mm'
RDMA/mlx5: Use odp instead of mr->umem in pagefault_mr
RDMA/mlx5: Use ib_umem_start instead of umem.address
...
Linus Torvalds [Sat, 21 Sep 2019 16:47:19 +0000 (09:47 -0700)]
Merge tag 'compiler-attributes-for-linus-v5.4' of git://github.com/ojeda/linux
Pull asm inline support from Miguel Ojeda:
"Make use of gcc 9's "asm inline()" (Rasmus Villemoes):
gcc 9+ (and gcc 8.3, 7.5) provides a way to override the otherwise
crude heuristic that gcc uses to estimate the size of the code
represented by an asm() statement. From the gcc docs
If you use 'asm inline' instead of just 'asm', then for inlining
purposes the size of the asm is taken as the minimum size, ignoring
how many instructions GCC thinks it is.
For compatibility with older compilers, we obviously want a
#if [understands asm inline]
#define asm_inline asm inline
#else
#define asm_inline asm
#endif
But since we #define the identifier inline to attach some attributes,
we have to use an alternate spelling of that keyword. gcc provides
both __inline__ and __inline, and we currently #define both to inline,
so they all have the same semantics.
We have to free up one of __inline__ and __inline, and the latter is
by far the easiest.
The two x86 changes cause smaller code gen differences than I'd
expect, but I think we do want the asm_inline thing available sooner
or later, so this is just to get the ball rolling"
* tag 'compiler-attributes-for-linus-v5.4' of git://github.com/ojeda/linux:
x86: bug.h: use asm_inline in _BUG_FLAGS definitions
x86: alternative.h: use asm_inline for all alternative variants
compiler-types.h: add asm_inline definition
compiler_types.h: don't #define __inline
lib/zstd/mem.h: replace __inline by inline
staging: rtl8723bs: replace __inline by inline
Linus Torvalds [Sat, 21 Sep 2019 16:36:28 +0000 (09:36 -0700)]
Merge tag 'gcc-plugins-v5.4-rc1' of git://git./linux/kernel/git/kees/linux
Pull gcc-plugins fix from Kees Cook:
"Fix a potential problem in randomize_layout structure auto-selection
(that was not triggered by any existing kernel structures)"
* tag 'gcc-plugins-v5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
randstruct: Check member structs in is_pure_ops_struct()
Linus Torvalds [Sat, 21 Sep 2019 16:34:29 +0000 (09:34 -0700)]
Merge tag 'printk-for-5.4' of git://git./linux/kernel/git/pmladek/printk
Pull printk updates from Petr Mladek:
- Fix off-by-one error when calculating messages that might fit into
kmsg buffer. It causes occasional omitting of the last message.
- Add missing pointer check in %pD format modifier handling.
- Some clean up
* tag 'printk-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk:
ABI: Update dev-kmsg documentation to match current kernel behaviour
printk: Replace strncmp() with str_has_prefix()
lib/test_printf: Remove obvious comments from %pd and %pD tests
lib/test_printf: Add test of null/invalid pointer dereference for dentry
vsprintf: Prevent crash when dereferencing invalid pointers for %pD
printk: Do not lose last line in kmsg buffer dump
Linus Torvalds [Fri, 20 Sep 2019 22:53:02 +0000 (15:53 -0700)]
Merge tag 'armsoc-late' of git://git./linux/kernel/git/soc/soc
Pull ARM SoC late updates from Arnd Bergmann:
"This is some material that we picked up into our tree late or that had
complex inter-depondencies. The fact that there are these
interdependencies tends to meant that these are often actually the
most interesting new additions:
- The new Aspeed AST2600 baseboard management controller is added,
this is a Cortex-A7 based follow-up to the ARM11 based AST2500 and
had some dependencies on other device drivers.
- After many years, support for the MMP2 based OLPC XO-1.75 finally
makes it into the kernel.
- The Armada 3720 based Turris Mox open source router platform is a
late addition and it follows some preparatory work across multiple
branches.
- The OMAP2+ platform had some large-scale cleanup involving driver
changes and DT changes, here we finish it off, dropping a lot of
the now-unused platform data.
- The TI K3 platform that got added for 5.3 gains a lot more support
for individual bits on the SoC, this part just came late for the
merge window"
[ This pull request itself wasn't actually sent late at all by Arnd, but
I waited on the branches that it used to be pulled first, so it ends
up being merged much later than the other ARM SoC pull requests this
merge window - Linus ]
* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (57 commits)
ARM: dts: dir685: Drop spi-cpol from the display
ARM: dts: aspeed: Add AST2600 pinmux nodes
ARM: dts: aspeed: Add AST2600 and EVB
ARM: exynos: Enable support for ARM architected timers
ARM: samsung: Fix system restart on S3C6410
ARM: dts: mmp2: add OLPC XO 1.75 machine
ARM: dts: mmp2: rename the USB PHY node
ARM: dts: mmp2: specify reg-shift for the UARTs
ARM: dts: mmp2: add camera interfaces
ARM: dts: mmp2: fix the SPI nodes
ARM: dts: mmp2: trivial whitespace fix
arm64: dts: marvell: add DTS for Turris Mox
dt-bindings: marvell: document Turris Mox compatible
arm64: dts: marvell: armada-37xx: add SPI CS1 pinctrl
arm64: dts: ti: k3-j721e-main: Fix gic-its node unit-address
arm64: dts: ti: k3-am65-main: Fix gic-its node unit-address
arm64: dts: ti: k3-j721e-main: Add hwspinlock node
arm64: dts: ti: k3-am65-main: Add hwspinlock node
arm64: dts: k3-j721e: Add gpio-keys on common processor board
dt-bindings: pinctrl: k3: Introduce pinmux definitions for J721E
...
Linus Torvalds [Fri, 20 Sep 2019 22:45:07 +0000 (15:45 -0700)]
Merge tag 'clk-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"We have a small collection of core framework updates this time, mostly
around clk registration by clk providers and debugfs "nice to haves"
for rate constraints. I'll highlight that we're now setting the
clk_init_data pointer inside struct clk_hw to NULL during
clk_register(), which may break some drivers that thought they could
use that pointer during normal operations. That change has been
sitting in next for a while now but maybe something is still broken.
We'l see. Other than that the core framework changes aren't invasive
and they're fixing bugs, simplifying, and making things better.
On the clk driver side we got the usual addition of new SoC support,
new features for existing drivers, and bug fixes scattered throughout.
The biggest diffstat is the Amlogic driver that gained CPU clk support
in addition to migrating to the new way of specifying clk parents.
After that the Qualcomm, i.MX, Mediatek, and Rockchip clk drivers got
support for various new SoCs and clock controllers from those vendors.
Core:
- Drop NULL checks in clk debugfs
- Add min/max rates to clk debugfs
- Set clk_init_data pointer inside clk_hw to NULL after registration
- Make clk_bulk_get_all() return an 'id' corresponding to clock-names
- Evict parents from parent cache when they're unregistered
New Drivers:
- Add clock driver for i.MX8MN SoCs
- Support aspeed AST2600 SoCs
- Support for Mediatek MT6779 SoCs
- Support qcom SM8150 GCC and RPMh clks
- Support qcom QCS404 WCSS clks
- Add CPU clock support for Armada 7K/8K (specifically AP806 and AP807)
- Addition of clock driver for Rockchip rk3308 SoCs
Updates:
- Add regulator support to the cdce925 clk driver
- Add support for Raspberry Pi 4 bcm2711 SoCs
- Add SDIO gate support to aspeed driver
- Add missing of_node_put() calls in various clk drivers
- Migrate Amlogic driver to new clock parent description method
- Add DVFS support to Amlogic Meson g12
- Add Amlogic Meson g12a reset support to the axg audio clock controller
- Add sm1 support to the Amlogic Meson g12a clock controller
- Switch i.MX8MM clock driver to platform driver
- Add Hifi4 DSP related clocks for i.MX8QXP SoC
- Fix Audio PLL setting and parent clock for USB
- Misc i.MX8 clock driver improvements and corrections
- Set floor ops for Qualcomm SD clks so that rounding works
- Fix "always-on" Clock Domains on Renesas R-Car M1A, RZ/A1, RZ/A2, and RZ/N1
- Enable the Allwinner V3 SoC and fix the i2s clock for H6"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (137 commits)
clk: Drop !clk checks in debugfs dumping
clk: imx: imx8mn: fix pll mux bit
clk: imx: imx8mm: fix pll mux bit
clk: imx: clk-pll14xx: unbypass PLL by default
clk: imx: pll14xx: avoid glitch when set rate
clk: mvebu: ap80x: add AP807 clock support
clk: mvebu: ap806: Prepare the introduction of AP807 clock support
clk: mvebu: ap806: add AP-DCLK (hclk) to system controller driver
clk: mvebu: ap806: be more explicit on what SaR is
clk: mvebu: ap80x-cpu: add AP807 CPU clock support
clk: mvebu: ap806-cpu: prepare mapping of AP807 CPU clock
dt-bindings: ap806: Document AP807 clock compatible
dt-bindings: ap80x: Document AP807 CPU clock compatible
clk: sprd: add missing kfree
clk: at91: allow 24 Mhz clock as input for PLL
clk: Make clk_bulk_get_all() return a valid "id"
clk: actions: Fix factor clk struct member access
clk: qcom: rcg: Return failure for RCG update
clk: remove extra ---help--- tags in Kconfig
clk: add include guard to clk-conf.h
...
Linus Torvalds [Fri, 20 Sep 2019 22:06:13 +0000 (15:06 -0700)]
Merge tag 'vfio-v5.4-rc1' of git://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Fix spapr iommu error case case (Alexey Kardashevskiy)
- Consolidate region type definitions (Cornelia Huck)
- Restore saved original PCI state on release (hexin)
- Simplify mtty sample driver interrupt path (Parav Pandit)
- Support for reporting valid IOVA regions to user (Shameer Kolothum)
* tag 'vfio-v5.4-rc1' of git://github.com/awilliam/linux-vfio:
vfio_pci: Restore original state on release
vfio/type1: remove duplicate retrieval of reserved regions
vfio/type1: Add IOVA range capability support
vfio/type1: check dma map request is within a valid iova range
vfio/spapr_tce: Fix incorrect tce_iommu_group memory free
vfio-mdev/mtty: Simplify interrupt generation
vfio: re-arrange vfio region definitions
vfio/type1: Update iova list on detach
vfio/type1: Check reserved region conflict and update iova list
vfio/type1: Introduce iova list and add iommu aperture validity check
Paul Burton [Wed, 18 Sep 2019 22:03:30 +0000 (22:03 +0000)]
MIPS: Detect bad _PFN_SHIFT values
2 recent commits have fixed issues where _PFN_SHIFT grew too large due
to the introduction of too many pgprot bits in our PTEs for some MIPS32
kernel configurations. Tracking down such issues can be tricky, so add a
BUILD_BUG_ON() to help.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Paul Burton [Wed, 18 Sep 2019 22:03:27 +0000 (22:03 +0000)]
MIPS: Disable pte_special() for MIPS32 with RiXi
Commit
61cbfff4b1a7 ("MIPS: pte_special()/pte_mkspecial() support")
added a _PAGE_SPECIAL bit to the pgprot bits of our PTEs. Unfortunately
for MIPS32 configurations with RiXi support this pushed the number of
pgprot bits to 13. Since the PFN field in EntryLo begins at bit 12 this
results in us shifting the most significant bit of the physical address
beyond the end of the PTE, leading any mapped access to a physical
address above 2GB to incorrectly access an address 2GB lower than
intended.
For now, disable the pte_special() support for MIPS32 configurations
that support RiXi.
Fixes:
61cbfff4b1a7 ("MIPS: pte_special()/pte_mkspecial() support")
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Dmitry Korotin <dkorotin@wavecomp.com>
Cc: linux-mips@vger.kernel.org
Linus Torvalds [Fri, 20 Sep 2019 18:48:06 +0000 (11:48 -0700)]
Merge tag 'powerpc-5.4-1' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"This is a bit late, partly due to me travelling, and partly due to a
power outage knocking out some of my test systems *while* I was
travelling.
- Initial support for running on a system with an Ultravisor, which
is software that runs below the hypervisor and protects guests
against some attacks by the hypervisor.
- Support for building the kernel to run as a "Secure Virtual
Machine", ie. as a guest capable of running on a system with an
Ultravisor.
- Some changes to our DMA code on bare metal, to allow devices with
medium sized DMA masks (> 32 && < 59 bits) to use more than 2GB of
DMA space.
- Support for firmware assisted crash dumps on bare metal (powernv).
- Two series fixing bugs in and refactoring our PCI EEH code.
- A large series refactoring our exception entry code to use gas
macros, both to make it more readable and also enable some future
optimisations.
As well as many cleanups and other minor features & fixups.
Thanks to: Adam Zerella, Alexey Kardashevskiy, Alistair Popple, Andrew
Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Anshuman Khandual,
Balbir Singh, Benjamin Herrenschmidt, Cédric Le Goater, Christophe
JAILLET, Christophe Leroy, Christopher M. Riedl, Christoph Hellwig,
Claudio Carvalho, Daniel Axtens, David Gibson, David Hildenbrand,
Desnes A. Nunes do Rosario, Ganesh Goudar, Gautham R. Shenoy, Greg
Kurz, Guerney Hunt, Gustavo Romero, Halil Pasic, Hari Bathini, Joakim
Tjernlund, Jonathan Neuschafer, Jordan Niethe, Leonardo Bras, Lianbo
Jiang, Madhavan Srinivasan, Mahesh Salgaonkar, Mahesh Salgaonkar,
Masahiro Yamada, Maxiwell S. Garcia, Michael Anderson, Nathan
Chancellor, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Oliver
O'Halloran, Qian Cai, Ram Pai, Ravi Bangoria, Reza Arbab, Ryan Grimm,
Sam Bobroff, Santosh Sivaraj, Segher Boessenkool, Sukadev Bhattiprolu,
Thiago Bauermann, Thiago Jung Bauermann, Thomas Gleixner, Tom
Lendacky, Vasant Hegde"
* tag 'powerpc-5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (264 commits)
powerpc/mm/mce: Keep irqs disabled during lockless page table walk
powerpc: Use ftrace_graph_ret_addr() when unwinding
powerpc/ftrace: Enable HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
ftrace: Look up the address of return_to_handler() using helpers
powerpc: dump kernel log before carrying out fadump or kdump
docs: powerpc: Add missing documentation reference
powerpc/xmon: Fix output of XIVE IPI
powerpc/xmon: Improve output of XIVE interrupts
powerpc/mm/radix: remove useless kernel messages
powerpc/fadump: support holes in kernel boot memory area
powerpc/fadump: remove RMA_START and RMA_END macros
powerpc/fadump: update documentation about option to release opalcore
powerpc/fadump: consider f/w load area
powerpc/opalcore: provide an option to invalidate /sys/firmware/opal/core file
powerpc/opalcore: export /sys/firmware/opal/core for analysing opal crashes
powerpc/fadump: update documentation about CONFIG_PRESERVE_FA_DUMP
powerpc/fadump: add support to preserve crash data on FADUMP disabled kernel
powerpc/fadump: improve how crashed kernel's memory is reserved
powerpc/fadump: consider reserved ranges while releasing memory
powerpc/fadump: make crash memory ranges array allocation generic
...
Linus Torvalds [Fri, 20 Sep 2019 18:42:07 +0000 (11:42 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"We've had a few arm64 fixes trickle in this week. Nothing catastophic,
but all things that should be addressed:
- Fix clang build breakage with CONFIG_OPTIMIZE_INLINING=y
- Fix compilation of pointer tagging selftest
- Fix COND_SYSCALL definitions to work with CFI checks
- Fix stale documentation reference in our Kconfig"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Fix reference to docs for ARM64_TAGGED_ADDR_ABI
arm64: fix function types in COND_SYSCALL
selftests, arm64: add kernel headers path for tags_test
arm64: fix unreachable code issue with cmpxchg
Linus Torvalds [Fri, 20 Sep 2019 18:28:43 +0000 (11:28 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/rkuo/linux-hexagon-kernel
Pull Hexagon maintainership update from Richard Kuo:
"I am leaving QuIC, and Brian Cain will be taking over maintainership
of the Hexagon port"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux-hexagon-kernel:
Hexagon: change maintainer to Brian Cain
Linus Torvalds [Fri, 20 Sep 2019 18:19:48 +0000 (11:19 -0700)]
Merge tag 'trace-v5.4' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
- Addition of multiprobes to kprobe and uprobe events (allows for more
than one probe attached to the same location)
- Addition of adding immediates to probe parameters
- Clean up of the recordmcount.c code. This brings us closer to merging
recordmcount into objtool, and reuse code.
- Other small clean ups
* tag 'trace-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (33 commits)
selftests/ftrace: Update kprobe event error testcase
tracing/probe: Reject exactly same probe event
tracing/probe: Fix to allow user to enable events on unloaded modules
selftests/ftrace: Select an existing function in kprobe_eventname test
tracing/kprobe: Fix NULL pointer access in trace_porbe_unlink()
tracing: Make sure variable reference alias has correct var_ref_idx
tracing: Be more clever when dumping hex in __print_hex()
ftrace: Simplify ftrace hash lookup code in clear_func_from_hash()
tracing: Add "gfp_t" support in synthetic_events
tracing: Rename tracing_reset() to tracing_reset_cpu()
tracing: Document the stack trace algorithm in the comments
tracing/arm64: Have max stack tracer handle the case of return address after data
recordmcount: Clarify what cleanup() does
recordmcount: Remove redundant cleanup() calls
recordmcount: Kernel style formatting
recordmcount: Kernel style function signature formatting
recordmcount: Rewrite error/success handling
selftests/ftrace: Add syntax error test for multiprobe
selftests/ftrace: Add syntax error test for immediates
selftests/ftrace: Add a testcase for kprobe multiprobe event
...
Linus Torvalds [Fri, 20 Sep 2019 17:31:19 +0000 (10:31 -0700)]
Merge tag 'kgdb-5.4-rc1' of git://git./linux/kernel/git/danielt/linux
Pull kgdb updates from Daniel Thompson:
"It has been a quiet dev cycle for kgdb. There has been some good stuff
for kdb on the mailing list but unfortunately the patches caused a
couple of problems with the kdb pager so I had to drop those and they
will have to wait for next time!
That just leaves us with just a couple of very tiny clean ups for now:
- Fix a broken comment
- Use str_has_prefix() for the grep "pipe" in kdb"
* tag 'kgdb-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux:
kgdb: fix comment regarding static function
kdb: Replace strncmp with str_has_prefix
Linus Torvalds [Fri, 20 Sep 2019 16:06:26 +0000 (09:06 -0700)]
lz4: do not export static symbol
Kbuild now complains (rightly) about it.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 20 Sep 2019 15:36:47 +0000 (08:36 -0700)]
Merge tag 'kbuild-v5.4' of git://git./linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- add modpost warn exported symbols marked as 'static' because 'static'
and EXPORT_SYMBOL is an odd combination
- break the build early if gold linker is used
- optimize the Bison rule to produce .c and .h files by a single
pattern rule
- handle PREEMPT_RT in the module vermagic and UTS_VERSION
- warn CONFIG options leaked to the user-space except existing ones
- make single targets work properly
- rebuild modules when module linker scripts are updated
- split the module final link stage into scripts/Makefile.modfinal
- fix the missed error code in merge_config.sh
- improve the error message displayed on the attempt of the O= build in
unclean source tree
- remove 'clean-dirs' syntax
- disable -Wimplicit-fallthrough warning for Clang
- add CONFIG_CC_OPTIMIZE_FOR_SIZE_O3 for ARC
- remove ARCH_{CPP,A,C}FLAGS variables
- add $(BASH) to run bash scripts
- change *CFLAGS_<basetarget>.o to take the relative path to $(obj)
instead of the basename
- stop suppressing Clang's -Wunused-function warnings when W=1
- fix linux/export.h to avoid genksyms calculating CRC of trimmed
exported symbols
- misc cleanups
* tag 'kbuild-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (63 commits)
genksyms: convert to SPDX License Identifier for lex.l and parse.y
modpost: use __section in the output to *.mod.c
modpost: use MODULE_INFO() for __module_depends
export.h, genksyms: do not make genksyms calculate CRC of trimmed symbols
export.h: remove defined(__KERNEL__), which is no longer needed
kbuild: allow Clang to find unused static inline functions for W=1 build
kbuild: rename KBUILD_ENABLE_EXTRA_GCC_CHECKS to KBUILD_EXTRA_WARN
kbuild: refactor scripts/Makefile.extrawarn
merge_config.sh: ignore unwanted grep errors
kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)
modpost: add NOFAIL to strndup
modpost: add guid_t type definition
kbuild: add $(BASH) to run scripts with bash-extension
kbuild: remove ARCH_{CPP,A,C}FLAGS
kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARC
kbuild: Do not enable -Wimplicit-fallthrough for clang for now
kbuild: clean up subdir-ymn calculation in Makefile.clean
kbuild: remove unneeded '+' marker from cmd_clean
kbuild: remove clean-dirs syntax
kbuild: check clean srctree even earlier
...
Linus Torvalds [Thu, 19 Sep 2019 23:24:24 +0000 (16:24 -0700)]
Merge tag 'drm-next-2019-09-18' of git://anongit.freedesktop.org/drm/drm
Pull drm updates from Dave Airlie:
"This is the main pull request for 5.4-rc1 merge window. I don't think
there is anything outstanding so next week should just be fixes, but
we'll see if I missed anything. I landed some fixes earlier in the
week but got delayed writing summary and sending it out, due to a mix
of sick kid and jetlag!
There are some fixes pending, but I'd rather get the main merge out of
the way instead of delaying it longer.
It's also pretty large in commit count and new amd header file size.
The largest thing is four new amdgpu products (navi12/14, arcturus and
renoir APU support).
Otherwise it's pretty much lots of work across the board, i915 has
started landing tigerlake support, lots of icelake fixes and lots of
locking reworking for future gpu support, lots of header file rework
(drmP.h is nearly gone), some old legacy hacks (DRM_WAIT_ON) have been
put into the places they are needed.
uapi:
- content protection type property for HDCP
core:
- rework include dependencies
- lots of drmP.h removals
- link rate calculation robustness fix
- make fb helper map only when required
- add connector->DDC adapter link
- DRM_WAIT_ON removed
- drop DRM_AUTH usage from drivers
dma-buf:
- reservation object fence helper
dma-fence:
- shrink dma_fence struct
- merge signal functions
- store timestamps in dma_fence
- selftests
ttm:
- embed drm_get_object struct into ttm_buffer_object
- release_notify callback
bridges:
- sii902x - audio graph card support
- tc358767 - aux data handling rework
- ti-snd64dsi86 - debugfs support, DSI mode flags support
panels:
- Support for GiantPlus GPM940B0, Sharp LQ070Y3DG3B, Ortustech
COM37H3M, Novatek NT39016, Sharp LS020B1DD01D, Raydium RM67191, Boe
Himax8279d, Sharp LD-D5116Z01B
- TI nspire, NEC NL8048HL11, LG Philips LB035Q02, Sharp LS037V7DW01,
Sony ACX565AKM, Toppoly TD028TTEC1 Toppoly TD043MTEA1
i915:
- Initial tigerlake platform support
- Locking simplification work, general all over refactoring.
- Selftests
- HDCP debug info improvements
- DSI properties
- Icelake display PLL fixes, colorspace fixes, bandwidth fixes, DSI
suspend/resume
- GuC fixes
- Perf fixes
- ElkhartLake enablement
- DP MST fixes
- GVT - command parser enhancements
amdgpu:
- add wipe memory on release flag for buffer creation
- Navi12/14 support (may be marked experimental)
- Arcturus support
- Renoir APU support
- mclk DPM for Navi
- DC display fixes
- Raven scatter/gather support
- RAS support for GFX
- Navi12 + Arcturus power features
- GPU reset for Picasso
- smu11 i2c controller support
amdkfd:
- navi12/14 support
- Arcturus support
radeon:
- kexec fix
nouveau:
- improved display color management
- detect lack of GPU power cables
vmwgfx:
- evicition priority support
- remove unused security feature
msm:
- msm8998 display support
- better async commit support for cursor updates
etnaviv:
- per-process address space support
- performance counter fixes
- softpin support
mcde:
- DCS transfers fix
exynos:
- drmP.h cleanup
lima:
- reduce logging
kirin:
- misc clenaups
komeda:
- dual-link support
- DT memory regions
hisilicon:
- misc fixes
imx:
- IPUv3 image converter fixes
- 32-bit RGB V4L2 pixel format support
ingenic:
- more support for panel related cases
mgag200:
- cursor support fix
panfrost:
- export GPU features register to userspace
- gpu heap allocations
- per-fd address space support
pl111:
- CLD pads wiring support removed from DT
rockchip:
- rework to use DRM PSR helpers
- fix bug in VOP_WIN_GET macro
- DSI DT binding rework
sun4i:
- improve support for color encoding and range
- DDC enabled GPIO
tinydrm:
- rework SPI support
- improve MIPI-DBI support
- moved to drm/tiny
vkms:
- rework CRC tracking
dw-hdmi:
- get_eld and i2s improvements
gm12u320:
- misc fixes
meson:
- global code cleanup
- vpu feature detect
omap:
- alpha/pixel blend mode properties
rcar-du:
- misc fixes"
* tag 'drm-next-2019-09-18' of git://anongit.freedesktop.org/drm/drm: (2112 commits)
drm/nouveau/bar/gm20b: Avoid BAR1 teardown during init
drm/nouveau: Fix ordering between TTM and GEM release
drm/nouveau/prime: Extend DMA reservation object lock
drm/nouveau: Fix fallout from reservation object rework
drm/nouveau/kms/nv50-: Don't create MSTMs for eDP connectors
drm/i915: Use NOEVICT for first pass on attemping to pin a GGTT mmap
drm/i915: to make vgpu ppgtt notificaiton as atomic operation
drm/i915: Flush the existing fence before GGTT read/write
drm/i915: Hold irq-off for the entire fake lock period
drm/i915/gvt: update RING_START reg of vGPU when the context is submitted to i915
drm/i915/gvt: update vgpu workload head pointer correctly
drm/mcde: Fix DSI transfers
drm/msm: Use the correct dma_sync calls harder
drm/msm: remove unlikely() from WARN_ON() conditions
drm/msm/dsi: Fix return value check for clk_get_parent
drm/msm: add atomic traces
drm/msm/dpu: async commit support
drm/msm: async commit support
drm/msm: split power control from prepare/complete_commit
drm/msm: add kms->flush_commit()
...
Stephen Boyd [Thu, 19 Sep 2019 22:31:59 +0000 (15:31 -0700)]
Merge branches 'clk-bulk-fix', 'clk-at91' and 'clk-sprd' into clk-next
- Make clk_bulk_get_all() return an 'id' corresponding to clock-names
* clk-bulk-fix:
clk: Make clk_bulk_get_all() return a valid "id"
* clk-at91:
clk: at91: allow 24 Mhz clock as input for PLL
clk: at91: select parent if main oscillator or bypass is enabled
clk: at91: fix update bit maps on CFG_MOR write
* clk-sprd:
clk: sprd: add missing kfree
Stephen Boyd [Thu, 19 Sep 2019 22:31:46 +0000 (15:31 -0700)]
Merge branches 'clk-cdce-regulator', 'clk-bcm', 'clk-evict-parent-cache' and 'clk-actions' into clk-next
- Add regulator support to the cdce925 clk driver
- Add support for Raspberry Pi 4 bcm2711 SoCs
- Evict parents from parent cache when they're unregistered
* clk-cdce-regulator:
clk: clk-cdce925: Add regulator support
dt-bindings: clock: cdce925: Add regulator documentation
* clk-bcm:
clk: bcm2835: Mark PLLD_PER as CRITICAL
clk: bcm2835: Add BCM2711_CLOCK_EMMC2 support
clk: bcm2835: Introduce SoC specific clock registration
dt-bindings: bcm2835-cprman: Add bcm2711 support
* clk-evict-parent-cache:
clk: Evict unregistered clks from parent caches
* clk-actions:
clk: actions: Fix factor clk struct member access