Phillip Lougher [Mon, 5 Jan 2009 08:46:23 +0000 (08:46 +0000)]
Squashfs: directory readdir operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Phillip Lougher [Mon, 5 Jan 2009 08:46:23 +0000 (08:46 +0000)]
Squashfs: directory lookup operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Phillip Lougher [Mon, 5 Jan 2009 08:46:22 +0000 (08:46 +0000)]
Squashfs: inode operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Linus Torvalds [Mon, 5 Jan 2009 00:32:11 +0000 (16:32 -0800)]
Merge branch 'audit.b61' of git://git./linux/kernel/git/viro/audit-current
* 'audit.b61' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
audit: validate comparison operations, store them in sane form
clean up audit_rule_{add,del} a bit
make sure that filterkey of task,always rules is reported
audit rules ordering, part 2
fixing audit rule ordering mess, part 1
audit_update_lsm_rules() misses the audit_inode_hash[] ones
sanitize audit_log_capset()
sanitize audit_fd_pair()
sanitize audit_mq_open()
sanitize AUDIT_MQ_SENDRECV
sanitize audit_mq_notify()
sanitize audit_mq_getsetattr()
sanitize audit_ipc_set_perm()
sanitize audit_ipc_obj()
sanitize audit_socketcall
don't reallocate buffer in every audit_sockaddr()
Alessandro Zummo [Sun, 4 Jan 2009 20:00:54 +0000 (12:00 -0800)]
rtc: add alarm/update irq interfaces
Add standard interfaces for alarm/update irqs enabling. Drivers are no
more required to implement equivalent ioctl code as rtc-dev will provide
it.
UIE emulation should now be handled correctly and will work even for those
RTC drivers who cannot be configured to do both UIE and AIE.
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nick Piggin [Sun, 4 Jan 2009 20:00:53 +0000 (12:00 -0800)]
fs: symlink write_begin allocation context fix
With the write_begin/write_end aops, page_symlink was broken because it
could no longer pass a GFP_NOFS type mask into the point where the
allocations happened. They are done in write_begin, which would always
assume that the filesystem can be entered from reclaim. This bug could
cause filesystem deadlocks.
The funny thing with having a gfp_t mask there is that it doesn't really
allow the caller to arbitrarily tinker with the context in which it can be
called. It couldn't ever be GFP_ATOMIC, for example, because it needs to
take the page lock. The only thing any callers care about is __GFP_FS
anyway, so turn that into a single flag.
Add a new flag for write_begin, AOP_FLAG_NOFS. Filesystems can now act on
this flag in their write_begin function. Change __grab_cache_page to
accept a nofs argument as well, to honour that flag (while we're there,
change the name to grab_cache_page_write_begin which is more instructive
and does away with random leading underscores).
This is really a more flexible way to go in the end anyway -- if a
filesystem happens to want any extra allocations aside from the pagecache
ones in ints write_begin function, it may now use GFP_KERNEL (rather than
GFP_NOFS) for common case allocations (eg. ocfs2_alloc_write_ctxt, for a
random example).
[kosaki.motohiro@jp.fujitsu.com: fix ubifs]
[kosaki.motohiro@jp.fujitsu.com: fix fuse]
Signed-off-by: Nick Piggin <npiggin@suse.de>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: <stable@kernel.org> [2.6.28.x]
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Cleaned up the calling convention: just pass in the AOP flags
untouched to the grab_cache_page_write_begin() function. That
just simplifies everybody, and may even allow future expansion of the
logic. - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bruno Prémont [Sun, 4 Jan 2009 21:11:54 +0000 (13:11 -0800)]
viafb: fix crashes due to 4k stack overflow
The function viafb_cursor() uses 2 stack-variables of CURSOR_SIZE bits;
CURSOR_SIZE is defined as (8 * 1024). Using up twice 1k on stack is too
much for 4k-stack (though it works with 8k-stacks). Make those two
variables kzalloc'ed to preserve stack space.
Also merge the whole lot of local struct's in viafb_ioctl into a union so
the stack usage gets minimized here as well. (struct's are only accessed
in their indicidual IOCTL case) This second part is only compile-tested as
I know of no userspace app using the IOCTLs.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Cc: <JosephChan@via.com.tw>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pekka Enberg [Sun, 4 Jan 2009 20:00:48 +0000 (12:00 -0800)]
fs: introduce bgl_lock_ptr()
As suggested by Andreas Dilger, introduce a bgl_lock_ptr() helper in
<linux/blockgroup_lock.h> and add separate sb_bgl_lock() helpers to
filesystem specific header files to break the hidden dependency to
struct ext[234]_sb_info.
Also, while at it, convert the macros to static inlines to try make up
for all the times I broke Andrew Morton's tree.
Acked-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Sun, 4 Jan 2009 20:00:47 +0000 (12:00 -0800)]
spi.h uses/needs device.h
Include header files as used/needed:
In file included from drivers/leds/leds-dac124s085.c:16:
include/linux/spi/spi.h:66: error: field 'dev' has incomplete type
include/linux/spi/spi.h: In function 'to_spi_device':
include/linux/spi/spi.h:100: warning: type defaults to 'int' in declaration of '__mptr'
...
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Adam Lackorzynski [Sun, 4 Jan 2009 20:00:46 +0000 (12:00 -0800)]
vmalloc.c: fix flushing in vmap_page_range()
The flush_cache_vmap in vmap_page_range() is called with the end of the
range twice. The following patch fixes this for me.
Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Li Zefan [Sun, 4 Jan 2009 20:00:45 +0000 (12:00 -0800)]
cgroups: fix a race between cgroup_clone and umount
The race is calling cgroup_clone() while umounting the ns cgroup subsys,
and thus cgroup_clone() might access invalid cgroup_fs, or kill_sb() is
called after cgroup_clone() created a new dir in it.
The BUG I triggered is BUG_ON(root->number_of_cgroups != 1);
------------[ cut here ]------------
kernel BUG at kernel/cgroup.c:1093!
invalid opcode: 0000 [#1] SMP
...
Process umount (pid: 5177, ti=
e411e000 task=
e40c4670 task.ti=
e411e000)
...
Call Trace:
[<
c0493df7>] ? deactivate_super+0x3f/0x51
[<
c04a3600>] ? mntput_no_expire+0xb3/0xdd
[<
c04a3ab2>] ? sys_umount+0x265/0x2ac
[<
c04a3b06>] ? sys_oldumount+0xd/0xf
[<
c0403911>] ? sysenter_do_call+0x12/0x31
...
EIP: [<
c0456e76>] cgroup_kill_sb+0x23/0xe0 SS:ESP 0068:
e411ef2c
---[ end trace
c766c1be3bf944ac ]---
Cc: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Paul Menage <menage@google.com>
Cc: "Serge E. Hallyn" <serue@us.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Tue, 16 Dec 2008 10:59:26 +0000 (05:59 -0500)]
audit: validate comparison operations, store them in sane form
Don't store the field->op in the messy (and very inconvenient for e.g.
audit_comparator()) form; translate to dense set of values and do full
validation of userland-submitted value while we are at it.
->audit_init_rule() and ->audit_match_rule() get new values now; in-tree
instances updated.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 15 Dec 2008 06:50:28 +0000 (01:50 -0500)]
clean up audit_rule_{add,del} a bit
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Tue, 16 Dec 2008 08:51:22 +0000 (03:51 -0500)]
make sure that filterkey of task,always rules is reported
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 15 Dec 2008 06:17:50 +0000 (01:17 -0500)]
audit rules ordering, part 2
Fix the actual rule listing; add per-type lists _not_ used for matching,
with all exit,... sitting on one such list. Simplifies "do something
for all rules" logics, while we are at it...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 15 Dec 2008 04:45:27 +0000 (23:45 -0500)]
fixing audit rule ordering mess, part 1
Problem: ordering between the rules on exit chain is currently lost;
all watch and inode rules are listed after everything else _and_
exit,never on one kind doesn't stop exit,always on another from
being matched.
Solution: assign priorities to rules, keep track of the current
highest-priority matching rule and its result (always/never).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 14 Dec 2008 17:04:02 +0000 (12:04 -0500)]
audit_update_lsm_rules() misses the audit_inode_hash[] ones
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 4 Jan 2009 19:52:57 +0000 (14:52 -0500)]
sanitize audit_log_capset()
* no allocations
* return void
* don't duplicate checked for dummy context
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 14 Dec 2008 09:57:47 +0000 (04:57 -0500)]
sanitize audit_fd_pair()
* no allocations
* return void
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 14 Dec 2008 09:02:26 +0000 (04:02 -0500)]
sanitize audit_mq_open()
* don't bother with allocations
* don't do double copy_from_user()
* don't duplicate parts of check for audit_dummy_context()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 14 Dec 2008 08:46:48 +0000 (03:46 -0500)]
sanitize AUDIT_MQ_SENDRECV
* logging the original value of *msg_prio in mq_timedreceive(2)
is insane - the argument is write-only (i.e. syscall always
ignores the original value and only overwrites it).
* merge __audit_mq_timed{send,receive}
* don't do copy_from_user() twice
* don't mess with allocations in auditsc part
* ... and don't bother checking !audit_enabled and !context in there -
we'd already checked for audit_dummy_context().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Wed, 10 Dec 2008 12:16:12 +0000 (07:16 -0500)]
sanitize audit_mq_notify()
* don't copy_from_user() twice
* don't bother with allocations
* don't duplicate parts of audit_dummy_context()
* make it return void
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Wed, 10 Dec 2008 11:58:59 +0000 (06:58 -0500)]
sanitize audit_mq_getsetattr()
* get rid of allocations
* make it return void
* don't duplicate parts of audit_dummy_context()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Wed, 10 Dec 2008 08:47:15 +0000 (03:47 -0500)]
sanitize audit_ipc_set_perm()
* get rid of allocations
* make it return void
* simplify callers
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Wed, 10 Dec 2008 08:40:06 +0000 (03:40 -0500)]
sanitize audit_ipc_obj()
* get rid of allocations
* make it return void
* simplify callers
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Wed, 10 Dec 2008 08:16:51 +0000 (03:16 -0500)]
sanitize audit_socketcall
* don't bother with allocations
* now that it can't fail, make it return void
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Wed, 10 Dec 2008 00:50:34 +0000 (19:50 -0500)]
don't reallocate buffer in every audit_sockaddr()
No need to do that more than once per process lifetime; allocating/freeing
on each sendto/accept/etc. is bloody pointless.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linus Torvalds [Sat, 3 Jan 2009 20:04:39 +0000 (12:04 -0800)]
Merge branch 'cpus4096-for-linus-3' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (77 commits)
x86: setup_per_cpu_areas() cleanup
cpumask: fix compile error when CONFIG_NR_CPUS is not defined
cpumask: use alloc_cpumask_var_node where appropriate
cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t
x86: use cpumask_var_t in acpi/boot.c
x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids
sched: put back some stack hog changes that were undone in kernel/sched.c
x86: enable cpus display of kernel_max and offlined cpus
ia64: cpumask fix for is_affinity_mask_valid()
cpumask: convert RCU implementations, fix
xtensa: define __fls
mn10300: define __fls
m32r: define __fls
h8300: define __fls
frv: define __fls
cris: define __fls
cpumask: CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
cpumask: zero extra bits in alloc_cpumask_var_node
cpumask: replace for_each_cpu_mask_nr with for_each_cpu in kernel/time/
cpumask: convert mm/
...
Linus Torvalds [Sat, 3 Jan 2009 20:03:52 +0000 (12:03 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/joro/linux-2.6-iommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu: (89 commits)
AMD IOMMU: remove now unnecessary #ifdefs
AMD IOMMU: prealloc_protection_domains should be static
kvm/iommu: fix compile warning
AMD IOMMU: add statistics about total number of map requests
AMD IOMMU: add statistics about allocated io memory
AMD IOMMU: add stats counter for domain tlb flushes
AMD IOMMU: add stats counter for single iommu domain tlb flushes
AMD IOMMU: add stats counter for cross-page request
AMD IOMMU: add stats counter for free_coherent requests
AMD IOMMU: add stats counter for alloc_coherent requests
AMD IOMMU: add stats counter for unmap_sg requests
AMD IOMMU: add stats counter for map_sg requests
AMD IOMMU: add stats counter for unmap_single requests
AMD IOMMU: add stats counter for map_single requests
AMD IOMMU: add stats counter for completion wait events
AMD IOMMU: add init code for statistic collection
AMD IOMMU: add necessary header defines for stats counting
AMD IOMMU: add Kconfig entry for statistic collection code
AMD IOMMU: use dev_name in iommu_enable function
AMD IOMMU: use calc_devid in prealloc_protection_domains
...
Linus Torvalds [Sat, 3 Jan 2009 20:02:18 +0000 (12:02 -0800)]
Merge branch 'for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (34 commits)
V4L/DVB (10173): Missing v4l2_prio_close in radio_release
V4L/DVB (10172): add DVB_DEVICE_TYPE= to uevent
V4L/DVB (10171): Use usb_set_intfdata
V4L/DVB (10170): tuner-simple: prevent possible OOPS caused by divide by zero error
V4L/DVB (10168): sms1xxx: fix inverted gpio for lna control on tiger r2
V4L/DVB (10167): sms1xxx: add support for inverted gpio
V4L/DVB (10166): dvb frontend: stop using non-C99 compliant comments
V4L/DVB (10165): Add FE_CAN_2G_MODULATION flag to frontends that support DVB-S2
V4L/DVB (10164): Add missing S2 caps flag to S2API
V4L/DVB (10163): em28xx: allocate adev together with struct em28xx dev
V4L/DVB (10162): tuner-simple: Fix tuner type set message
V4L/DVB (10161): saa7134: fix autodetection for AVer TV GO 007 FM Plus
V4L/DVB (10160): em28xx: update chip id for em2710
V4L/DVB (10157): Add USB ID for the Sil4701 radio from DealExtreme
V4L/DVB (10156): saa7134: Add support for Avermedia AVer TV GO 007 FM Plus
V4L/DVB (10155): Add TEA5764 radio driver
V4L/DVB (10154): saa7134: fix a merge conflict on Behold H6 board
V4L/DVB (10153): Add the Beholder H6 card to DVB-T part of sources.
V4L/DVB (10152): Change configuration of the Beholder H6 card
V4L/DVB (10151): Fix I2C bridge error in zl10353
...
Yinghai Lu [Sat, 3 Jan 2009 08:06:34 +0000 (00:06 -0800)]
sparseirq: move set/get_timer_rand_state back to .c
those two functions only used in that C file
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 3 Jan 2009 20:00:07 +0000 (12:00 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
mmc: warn about voltage mismatches
mmc_spi: Add support for OpenFirmware bindings
pxamci: fix dma_unmap_sg length
mmc_block: ensure all sectors that do not have errors are read
drivers/mmc: Move a dereference below a NULL test
sdhci: handle built-in sdhci with modular leds class
mmc: balanc pci_iomap with pci_iounmap
mmc_block: print better error messages
mmc: Add mmc_vddrange_to_ocrmask() helper function
ricoh_mmc: Handle newer models of Ricoh controllers
mmc: Add 8-bit bus width support
sdhci: activate led support also when module
mmc: trivial annotation of 'blocks'
pci: use pci_ioremap_bar() in drivers/mmc
sdricoh_cs: Add support for Bay Controller devices
mmc: at91_mci: reorder timer setup and mmc_add_host() call
Linus Torvalds [Sat, 3 Jan 2009 19:59:13 +0000 (11:59 -0800)]
Merge git://git./linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
[WATCHDOG] Add support for the WM8350 watchdog
[WATCHDOG] Add SMSC SCH311x Watchdog Timer.
[WATCHDOG] ib700wdt - add timeout parameter
Linus Torvalds [Sat, 3 Jan 2009 19:56:24 +0000 (11:56 -0800)]
Merge branch 'cputime' of git://git390.osdl.marist.edu/linux-2.6
* 'cputime' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
[PATCH] fast vdso implementation for CLOCK_THREAD_CPUTIME_ID
[PATCH] improve idle cputime accounting
[PATCH] improve precision of idle time detection.
[PATCH] improve precision of process accounting.
[PATCH] idle cputime accounting
[PATCH] fix scaled & unscaled cputime accounting
Linus Torvalds [Sat, 3 Jan 2009 19:46:17 +0000 (11:46 -0800)]
Make %p print '(null)' for NULL pointers
Before, when we only ever printed out the pointer value itself, a NULL
pointer would never cause issues and might as well be printed out as
just its numeric value.
However, with the extended %p formats, especially %pR, we might validly
want to print out resources for debugging. And sometimes they don't
even exist, and the resource pointer is just NULL. Print it out as
such, rather than oopsing.
This is a more generic version of a patch done by Trent Piepho (catching
all %p cases rather than just %pR, and using "(null)" instead of
"[NULL]" to match glibc).
Requested-by: Trent Piepho <xyzzy@speakeasy.org>
Acked-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Sat, 3 Jan 2009 07:16:33 +0000 (07:16 +0000)]
get rid of special-casing the /sbin/loader on alpha
... just make it a binfmt handler like #! one.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Sat, 3 Jan 2009 07:16:23 +0000 (07:16 +0000)]
sanitize ifdefs in binfmt_aout
They are actually alpha vs. i386/arm/m68k i.e. ecoff vs. aout.
In the only place where we actually tried to handle arm and i386/m68k in
different ways (START_DATA() in coredump handling), the arm variant
works for all of them (i386 and m68k have u.start_code set to 0).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Sat, 3 Jan 2009 07:16:13 +0000 (07:16 +0000)]
remove the rudiment of a.out for sparc
it's been used only in sunos compat
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Blemings [Sat, 3 Jan 2009 05:48:44 +0000 (16:48 +1100)]
Updated contact info for CREDITS file
This updates some personal info in the CREDITS file.
I'm no longer actively involved in Keyspan driver work so shouldn't
really be listed as a Maintainer here.
I do however field the occasional question on them and as I'm dropping
the misc.nu domain, want to ensure people can find me should they need
to.
Signed-off-by: Hugh Blemings <hugh@blemings.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cyrill Gorcunov [Fri, 2 Jan 2009 18:51:32 +0000 (21:51 +0300)]
x86: setup_per_cpu_areas() cleanup
Impact: cleanup
__alloc_bootmem and __alloc_bootmem_node do panic
for us in case of fail so no need for additional
checks here.
Also lets use pr_*() macros for printing.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Mike Travis [Thu, 1 Jan 2009 02:08:48 +0000 (18:08 -0800)]
cpumask: fix compile error when CONFIG_NR_CPUS is not defined
CONFIG_NR_CPUS will be defined for all arch's whether SMP or not, but
it may not have made it into all arches yet.
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Mike Travis [Thu, 1 Jan 2009 02:08:47 +0000 (18:08 -0800)]
cpumask: use alloc_cpumask_var_node where appropriate
Impact: Reduce inter-node memory traffic.
Reduces inter-node memory traffic (offloading the global system bus)
by allocating referenced struct cpumasks on the same node as the
referring struct.
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Rusty Russell [Thu, 1 Jan 2009 02:08:47 +0000 (18:08 -0800)]
cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t
Impact: Reduce memory usage, use new API.
This is part of an effort to reduce structure sizes for machines
configured with large NR_CPUS. cpumask_t gets replaced by
cpumask_var_t, which is either struct cpumask[1] (small NR_CPUS) or
struct cpumask * (large NR_CPUS).
(Changes to powernow-k* by <travis>.)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Rusty Russell [Thu, 1 Jan 2009 02:08:47 +0000 (18:08 -0800)]
x86: use cpumask_var_t in acpi/boot.c
Impact: reduce stack size, use new API.
Replace cpumask_t with cpumask_var_t.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Mike Travis [Thu, 1 Jan 2009 02:08:46 +0000 (18:08 -0800)]
x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids
Impact: Reduce future system panics due to cpumask operations using NR_CPUS
Insure that code does not look at bits >= nr_cpu_ids as when cpumasks are
allocated based on nr_cpu_ids, these extra bits will not be defined.
Also some other minor updates:
* change in to use cpu accessor function set_cpu_present() instead of
directly accessing cpu_present_map w/cpu_clear() [arch/x86/kernel/reboot.c]
* use cpumask_of() instead of &cpumask_of_cpu() [arch/x86/kernel/reboot.c]
* optimize some cpu_mask_to_apicid_and functions.
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Mike Travis [Thu, 1 Jan 2009 02:08:45 +0000 (18:08 -0800)]
sched: put back some stack hog changes that were undone in kernel/sched.c
Impact: prevents panic from stack overflow on numa-capable machines.
Some of the "removal of stack hogs" changes in kernel/sched.c by using
node_to_cpumask_ptr were undone by the early cpumask API updates, and
causes a panic due to stack overflow. This patch undoes those changes
by using cpumask_of_node() which returns a 'const struct cpumask *'.
In addition, cpu_coregoup_map is replaced with cpu_coregroup_mask further
reducing stack usage. (Both of these updates removed 9 FIXME's!)
Also:
Pick up some remaining changes from the old 'cpumask_t' functions to
the new 'struct cpumask *' functions.
Optimize memory traffic by allocating each percpu local_cpu_mask on the
same node as the referring cpu.
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Mike Travis [Thu, 1 Jan 2009 02:08:45 +0000 (18:08 -0800)]
x86: enable cpus display of kernel_max and offlined cpus
Impact: enables /sys/devices/system/cpu/{kernel_max,offline} user interface
By setting total_cpus, the drivers/base/cpu.c will display the
values of kernel_max (NR_CPUS-1) and the offlined cpu map.
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Sat, 3 Jan 2009 11:50:46 +0000 (12:50 +0100)]
ia64: cpumask fix for is_affinity_mask_valid()
Impact: build fix on ia64
ia64's default_affinity_write() still had old cpumask_t usage:
/home/mingo/tip/kernel/irq/proc.c: In function `default_affinity_write':
/home/mingo/tip/kernel/irq/proc.c:114: error: incompatible type for argument 1 of `is_affinity_mask_valid'
make[3]: *** [kernel/irq/proc.o] Error 1
make[3]: *** Waiting for unfinished jobs....
update it to cpumask_var_t.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Sat, 3 Jan 2009 12:16:09 +0000 (13:16 +0100)]
cpumask: convert RCU implementations, fix
Impact: cleanup
This warning:
kernel/rcuclassic.c: In function ‘rcu_start_batch’:
kernel/rcuclassic.c:397: warning: passing argument 1 of ‘cpumask_andnot’ from incompatible pointer type
triggers because one usage site of rcp->cpumask was not converted
to to_cpumask(rcp->cpumask). There's no ill effects of this bug.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Sat, 3 Jan 2009 17:54:51 +0000 (18:54 +0100)]
Merge branch 'master' of git://git./linux/kernel/git/rusty/linux-2.6-cpumask into cpus4096-v2
Mike Travis [Thu, 1 Jan 2009 01:34:16 +0000 (17:34 -0800)]
Merge branch 'master' of git://git./linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask
Conflicts:
arch/x86/kernel/io_apic.c
kernel/rcuclassic.c
kernel/sched.c
kernel/time/tick-sched.c
Signed-off-by: Mike Travis <travis@sgi.com>
[ mingo@elte.hu: backmerged typo fix for io_apic.c ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Joerg Roedel [Sat, 3 Jan 2009 13:16:35 +0000 (14:16 +0100)]
AMD IOMMU: remove now unnecessary #ifdefs
The #ifdef's are no longer necessary when the iommu-api and the amd
iommu updates are merged together.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Sat, 3 Jan 2009 15:43:44 +0000 (16:43 +0100)]
Merge branches 'iommu/api' and 'iommu/amd' into for-linus
Jaswinder Singh Rajput [Mon, 29 Dec 2008 16:15:22 +0000 (21:45 +0530)]
AMD IOMMU: prealloc_protection_domains should be static
Impact: cleanup, reduce kernel size a bit, avoid sparse warning
Fixes sparse warning:
arch/x86/kernel/amd_iommu.c:1299:6: warning: symbol 'prealloc_protection_domains' was not declared. Should it be static?
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Sat, 3 Jan 2009 15:37:53 +0000 (16:37 +0100)]
kvm/iommu: fix compile warning
This fixes a compile warning about a variable thats maybe used
uninitialized in the function.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 15:13:04 +0000 (16:13 +0100)]
AMD IOMMU: add statistics about total number of map requests
Impact: see total number of map requests in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 14:57:30 +0000 (15:57 +0100)]
AMD IOMMU: add statistics about allocated io memory
Impact: see amount of allocated io memory in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 14:48:28 +0000 (15:48 +0100)]
AMD IOMMU: add stats counter for domain tlb flushes
Impact: see number of domain tlb flushes in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 14:46:29 +0000 (15:46 +0100)]
AMD IOMMU: add stats counter for single iommu domain tlb flushes
Impact: see number of single iommu domain tlb flushes in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 14:42:39 +0000 (15:42 +0100)]
AMD IOMMU: add stats counter for cross-page request
Impact: see number of requests for more than one page in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 14:16:38 +0000 (15:16 +0100)]
AMD IOMMU: add stats counter for free_coherent requests
Impact: see number of free_coherent requests in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 14:14:21 +0000 (15:14 +0100)]
AMD IOMMU: add stats counter for alloc_coherent requests
Impact: see number of alloc_coherent requests in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 14:12:14 +0000 (15:12 +0100)]
AMD IOMMU: add stats counter for unmap_sg requests
Impact: see number of unmap_sg requests in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 14:09:48 +0000 (15:09 +0100)]
AMD IOMMU: add stats counter for map_sg requests
Impact: see number of map_sg requests in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 14:07:12 +0000 (15:07 +0100)]
AMD IOMMU: add stats counter for unmap_single requests
Impact: see number of unmap_single requests in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 14:05:16 +0000 (15:05 +0100)]
AMD IOMMU: add stats counter for map_single requests
Impact: see number of map_single requests in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 13:59:58 +0000 (14:59 +0100)]
AMD IOMMU: add stats counter for completion wait events
Impact: see number of completion wait events in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 12:50:21 +0000 (13:50 +0100)]
AMD IOMMU: add init code for statistic collection
Impact: create a new debugfs directory
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 11:33:06 +0000 (12:33 +0100)]
AMD IOMMU: add necessary header defines for stats counting
Impact: add defines to make iommu stats collection configurable
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Thu, 11 Dec 2008 18:00:12 +0000 (19:00 +0100)]
AMD IOMMU: add Kconfig entry for statistic collection code
Impact: adds new Kconfig entry
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Wed, 10 Dec 2008 19:04:18 +0000 (20:04 +0100)]
AMD IOMMU: use dev_name in iommu_enable function
Impact: cleanup
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Wed, 10 Dec 2008 19:01:45 +0000 (20:01 +0100)]
AMD IOMMU: use calc_devid in prealloc_protection_domains
Impact: cleanup
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Fri, 12 Dec 2008 12:53:54 +0000 (13:53 +0100)]
AMD IOMMU: convert amd_iommu_isolate to bool
Impact: cleanup
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Wed, 10 Dec 2008 18:58:00 +0000 (19:58 +0100)]
AMD IOMMU: convert iommu->need_sync to bool
Impact: use bool instead of int for iommu->need_sync
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Wed, 10 Dec 2008 18:43:07 +0000 (19:43 +0100)]
AMD IOMMU: use dev_name instead of self-build print_devid
Impact: use generic dev_name instead of own function
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Wed, 10 Dec 2008 18:33:26 +0000 (19:33 +0100)]
AMD IOMMU: allocate a new protection for hotplugged devices
Impact: also hotplug devices benefit from device isolation
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Wed, 10 Dec 2008 17:48:59 +0000 (18:48 +0100)]
AMD IOMMU: add a domain flag for default domains
Impact: adds a new protection domain flag
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Wed, 3 Dec 2008 16:00:17 +0000 (17:00 +0100)]
AMD IOMMU: register functions for the IOMMU API
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 19:05:50 +0000 (20:05 +0100)]
AMD IOMMU: add domain address lookup function for IOMMU API
Impact: add a generic function to lockup addresses in protection domains
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 18:59:10 +0000 (19:59 +0100)]
AMD IOMMU: add domain unmap function for IOMMU API
Impact: add a generic function to unmap pages into protection domains
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 18:48:43 +0000 (19:48 +0100)]
AMD IOMMU: add domain map function for IOMMU API
Impact: add a generic function to map pages into protection domains
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 18:34:11 +0000 (19:34 +0100)]
AMD IOMMU: add device attach function for IOMMU API
Impact: add a generic function to attach devices to protection domains
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Mon, 8 Dec 2008 11:07:44 +0000 (12:07 +0100)]
AMD IOMMU: add device detach function for IOMMU API
Impact: add a generic function to detach devices from protection domains
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 17:34:12 +0000 (18:34 +0100)]
AMD IOMMU: add domain destroy function for IOMMU API
Impact: add a generic function for releasing protection domains
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 17:13:27 +0000 (18:13 +0100)]
AMD IOMMU: add domain init function for IOMMU API
Impact: add a generic function for allocation protection domains
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Mon, 8 Dec 2008 11:05:55 +0000 (12:05 +0100)]
AMD IOMMU: add domain cleanup helper function
Impact: add a function to remove all devices from a domain
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Wed, 10 Dec 2008 17:27:25 +0000 (18:27 +0100)]
AMD IOMMU: add device notifier callback
Impact: inform IOMMU about state change of a device in the driver core
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Mon, 8 Dec 2008 11:02:41 +0000 (12:02 +0100)]
AMD IOMMU: add device detach helper functions
Impact: add helper functions to detach a device from a domain
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Wed, 10 Dec 2008 13:39:51 +0000 (14:39 +0100)]
AMD IOMMU: rename set_device_domain function
Impact: rename set_device_domain() to attach_device()
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 16:56:36 +0000 (17:56 +0100)]
AMD IOMMU: add device reference counting for protection domains
Impact: know how many devices are assigned to a domain
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 16:49:42 +0000 (17:49 +0100)]
AMD IOMMU: add checks for dma_ops domain to dma_ops functions
Impact: detect when a driver uses a device assigned otherwise
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 16:46:25 +0000 (17:46 +0100)]
AMD IOMMU: add protection domain flags
Imapct: add a new struct member to 'struct protection_domain'
When using protection domains for dma_ops and KVM its better to know for
which subsystem it was allocated. Add a flags member to struct
protection domain for that purpose.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 20:01:12 +0000 (21:01 +0100)]
AMD IOMMU: add iommu_flush_domain function
Impact: add a function to flush a domain id on every IOMMU
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Wed, 10 Dec 2008 19:05:52 +0000 (20:05 +0100)]
AMD IOMMU: don't remove protection domain from iommu_pd_list
Impact: save unneeded logic to add and remove domains to the list
The removal of a protection domain from the iommu_pd_list is not
necessary. Another benefit is that we save complexity because we don't
have to readd it later when the device no longer uses the domain.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 19:54:37 +0000 (20:54 +0100)]
AMD IOMMU: move invalidation command building to a separate function
Impact: refactoring of iommu_queue_inv_iommu_pages
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 19:34:41 +0000 (20:34 +0100)]
AMD IOMMU: refactor completion wait handling into separate functions
Impact: split one function into three
The separate functions are required synchronize commands across all
hardware IOMMUs in the system.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 17:28:53 +0000 (18:28 +0100)]
AMD IOMMU: add domain id free function
Impact: add code to release a domain id
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 17:20:21 +0000 (18:20 +0100)]
AMD IOMMU: make dma_ops_free_pagetable generic
Impact: change code to free pagetables from protection domains
The dma_ops_free_pagetable function can only free pagetables from
dma_ops domains. Change that to free pagetables of pure protection
domains.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel [Tue, 2 Dec 2008 16:27:52 +0000 (17:27 +0100)]
AMD IOMMU: rename iommu_map to iommu_map_page
Impact: function rename
The iommu_map function maps only one page. Make this clear in the
function name.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Mike Day [Fri, 12 Dec 2008 16:16:30 +0000 (17:16 +0100)]
intel-iommu: fix bit shift at DOMAIN_FLAG_P2P_MULTIPLE_DEVICES
Signed-off-by: Mike Day <ncmike@ncultra.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
projects / platform / kernel / linux-exynos.git / log