Roel Kluin [Fri, 5 Feb 2010 09:26:27 +0000 (10:26 +0100)]
ocfs2: Fix contiguousness check in ocfs2_try_to_merge_extent_map()
The wrong member was compared in the continguousness check.
Acked-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Sunil Mushran [Tue, 2 Feb 2010 01:34:58 +0000 (17:34 -0800)]
ocfs2/dlm: Remove BUG_ON in dlm recovery when freeing locks of a dead node
During recovery, the dlm frees the locks for the dead node. If it finds a
lock in a resource for the dead node, it expects that node to also have a
ref in that lock resource. If not, it BUGs.
ossbz#1175 was filed with the above BUG. Now, while it is correct that we
should be expecting the ref, I see no reason why we have to BUG. After all,
we are freeing up the lock and clearing the ref.
This patch replaces the BUG_ON with a printk(). Hopefully, that will give
us more clues next time this happens.
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1175
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Acked-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Sunil Mushran [Wed, 3 Feb 2010 18:16:54 +0000 (10:16 -0800)]
ocfs2: Plugs race between the dc thread and an unlock ast message
This patch plugs a race between the downconvert thread and an unlock ast message.
Specifically, after the downconvert worker has done its task, the dc thread needs
to check whether an unlock ast made the downconvert moot.
Reported-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Acked-by: Mark Fasheh <mfasheh@sus.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Sunil Mushran [Tue, 2 Feb 2010 00:55:50 +0000 (16:55 -0800)]
ocfs2: Remove overzealous BUG_ON during blocked lock processing
During blocked lock processing, we should consider the possibility that the
lock is no longer blocking.
Joel Becker <joel.becker@oracle.com> assisted in fixing this issue.
Reported-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Sunil Mushran [Fri, 29 Jan 2010 17:44:11 +0000 (09:44 -0800)]
ocfs2: Do not downconvert if the lock level is already compatible
During upconvert, if the master were to send a BAST, dlmglue will detect the
upconversion in process and send a cancel convert to the master. Upon receiving
the AST for the cancel convert, it will re-process the lock resource to determine
whether it needs downconverting. Say, the up was from PR to EX and the BAST was
for EX. After the cancel convert, it will need to downconvert to NL.
However, if the node was originally upconverting from NL to EX, then there would
be no reason to downconvert (assuming the same message sequence).
This patch makes dlmglue consider the possibility that the current lock level
is already compatible and that downconverting is not required.
Joel Becker <joel.becker@oracle.com> assisted in fixing this issue.
Fixes ossbz#1178
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1178
Reported-by: Coly Li <coly.li@suse.de>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Sunil Mushran [Thu, 21 Jan 2010 18:50:03 +0000 (10:50 -0800)]
ocfs2: Prevent a livelock in dlmglue
There is possibility of a livelock in __ocfs2_cluster_lock(). If a node were
to get an ast for an upconvert request, followed immediately by a bast,
there is a small window where the fs may downconvert the lock before the
process requesting the upconvert is able to take the lock.
This patch adds a new flag to indicate that the upconvert is still in
progress and that the dc thread should not downconvert it right now.
Wengang Wang <wen.gang.wang@oracle.com> and Joel Becker
<joel.becker@oracle.com> contributed heavily to this patch.
Reported-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Wengang Wang [Thu, 21 Jan 2010 18:50:02 +0000 (10:50 -0800)]
ocfs2: Fix setting of OCFS2_LOCK_BLOCKED during bast
During bast, set the OCFS2_LOCK_BLOCKED flag only if the lock needs to
downconverted.
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Acked-by: Sunil Mushran <sunil.mushran@oracle.com>
Acked-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Tao Ma [Wed, 27 Jan 2010 02:21:52 +0000 (10:21 +0800)]
ocfs2: Use compat_ptr in reflink_arguments.
Although we use u64 to pass userspace pointers to the kernel
to avoid compat_ioctl, it doesn't work in some ppc platform.
So wrap them with compat_ptr and add compat_ioctl.
The detailed discussion about compat_ptr can be found in thread
http://lkml.org/lkml/2009/10/27/423.
We indeed met with a bug when testing on ppc(-EFAULT is returned
when using old_path). This patch try to fix this.
I have tested in ppc64(with 32 bit reflink) and x86_64(with i686
reflink), both works.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Sunil Mushran [Tue, 26 Jan 2010 01:58:30 +0000 (17:58 -0800)]
ocfs2/dlm: Handle EAGAIN for compatibility - v2
Mainline commit
aad1b15310b9bcd59fa81ab8f2b1513b59553ea8 made the
dlm_begin_reco_handler() return -EAGAIN instead of EAGAIN.
As this error is transmitted over the wire, we want the receiver,
dlm_send_begin_reco_message(), to understand both the older EAGAIN and
the newer -EAGAIN, to allow rolling upgrade of the cluster nodes.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Tao Ma [Wed, 3 Feb 2010 01:56:04 +0000 (09:56 +0800)]
ocfs2: Add parenthesis to wrap the check for O_DIRECT.
Add parenthesis to wrap the check for O_DIRECT.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Tao Ma [Mon, 1 Feb 2010 09:05:33 +0000 (17:05 +0800)]
ocfs2: Only bug out when page size is larger than cluster size.
In CoW, we have to make sure that the page is already written
out to the disk. So we have a BUG_ON(PageDirty(page)).
In ppc platform we have pagesize=64K, so if the cs=4K, if the
file have fragmented clusters, we will map the page many times.
See this file as an example.
Tree Depth: 0 Count: 19 Next Free Rec: 14
## Offset Clusters Block# Flags
0 0 4 2164864 0x2 Refcounted
1 4 2 9302792 0x2 Refcounted
...
We have to replace the extent recs one by one, so the page with index 0
will be mapped and dirtied twice.
I'd like to leave the BUG_ON there while adding a check so that in
case we meet with an error in other platforms, we can find it easily.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Tao Ma [Sat, 30 Jan 2010 15:32:19 +0000 (23:32 +0800)]
ocfs2: Fix memory overflow in cow_by_page.
In ocfs2_duplicate_clusters_by_page, we calculate map_end
by shifting page_index. But actually in case we meet with
a large offset(say in a i686 box, poff_t is only 32 bits
and page_index=2056240), we will overflow. So change the
type of page_index to loff_t.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Sunil Mushran [Tue, 26 Jan 2010 00:57:40 +0000 (16:57 -0800)]
ocfs2/dlm: Print more messages during lock migration
When a lock resource is migrated, the dlm compares the migrated
locks with that that was already existing on the new node. If the
comparison fails, it BUGs. This patch prints more messages when the
comparison fails inorder to help with the root cause analyis.
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1206
This does not fix bz1206. However, if we run into it again, we will
have more information to chew on.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Sunil Mushran [Tue, 26 Jan 2010 00:57:39 +0000 (16:57 -0800)]
ocfs2/dlm: Ignore LVBs of locks in the Blocked list
During lock resource migration, o2dlm fills the packet with a LVB from the
first valid lock. For sanity, it ensures that the other valid locks have the
same LVB. If not, it BUGs.
The valid locks are ones that have granted EX or PR lock levels and are either
on the Granted or Converting lists. Locks in the Blocked list cannot have a
valid LVB.
This patch ensures that we skip the locks in the Blocked list.
Fixes oss bugzilla#1202
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1202
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Sunil Mushran [Tue, 26 Jan 2010 00:57:38 +0000 (16:57 -0800)]
ocfs2/trivial: Remove trailing whitespaces
Patch removes trailing whitespaces.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Wengang Wang [Fri, 22 Jan 2010 13:58:04 +0000 (21:58 +0800)]
ocfs2: fix a misleading variable name
a local variable "dlm_version" is used as a fs locking version.
rename it fs_version.
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Tao Ma [Wed, 20 Jan 2010 03:31:11 +0000 (11:31 +0800)]
ocfs2: Sync max_inline_data_with_xattr from tools.
In ocfs2-tools, we have added ocfs2_max_inline_data_with_xattr,
so add it in the kernel's ocfs2_fs.h.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
OGAWA Hirofumi [Mon, 11 Jan 2010 18:37:45 +0000 (03:37 +0900)]
ocfs2: Fix refcnt leak on ocfs2_fast_follow_link() error path
If ->follow_link handler returns an error, it should decrement
nd->path refcnt. But ocfs2_fast_follow_link() doesn't decrement.
This patch fixes the problem by using nd_set_link() style error handling
instead of playing with nd->path.
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Linus Torvalds [Mon, 11 Jan 2010 17:48:48 +0000 (09:48 -0800)]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: Ensure we force all busy extents in range to disk
xfs: Don't flush stale inodes
xfs: fix timestamp handling in xfs_setattr
xfs: use DECLARE_EVENT_CLASS
Linus Torvalds [Mon, 11 Jan 2010 17:48:29 +0000 (09:48 -0800)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-fixes
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
GFS2: Use MAX_LFS_FILESIZE for meta inode size
GFS2: Fix gfs2_xattr_acl_chmod()
GFS2: Fix locking bug in rename
GFS2: Ensure uptodate inode size when using O_APPEND
Linus Torvalds [Mon, 11 Jan 2010 17:48:14 +0000 (09:48 -0800)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-fs-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6:
quota: Fix dquot_transfer for filesystems different from ext4
Linus Torvalds [Mon, 11 Jan 2010 17:47:52 +0000 (09:47 -0800)]
Merge branch 'agp-fixes' of git://git./linux/kernel/git/airlied/agp-2.6
* 'agp-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6:
agp/hp: fail gracefully if we don't find an IOC
agp/hp: fixup hp agp after ACPI changes
agp: correct missing cleanup on error in agp_add_bridge
Linus Torvalds [Mon, 11 Jan 2010 17:46:20 +0000 (09:46 -0800)]
Merge branch 'drm-linus' of git://git./linux/kernel/git/airlied/drm-2.6
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (45 commits)
drm/nv04: Fix set_operation software method.
drm/nouveau: initialise DMA tracking parameters earlier
drm/nouveau: use dma.max rather than pushbuf size for checking GET validity
drm/nv04: differentiate between nv04/nv05
drm/nouveau: Fix null deref in nouveau_fence_emit due to deleted fence
drm/nv50: prevent a possible ctxprog hang
drm/nouveau: have ttm's fault handler called directly
drm/nv50: restore correct cache1 get/put address on fifoctx load
drm/nouveau: create function for "dealing" with gpu lockup
drm/nouveau: remove unused nouveau_channel_idle() function
drm/nouveau: fix handling of fbcon colours in 8bpp
drm/nv04: Context switching fixes.
drm/nouveau: Use the software object for fencing.
drm/nouveau: Allocate a per-channel instance of NV_SW.
drm/nv50: make the blocksize depend on vram size
drm/nouveau: better alignment of bo sizes and use roundup instead of ALIGN
drm/nouveau: Don't skip card take down on nv0x.
drm/nouveau: Implement nv42-nv43 TV load detection.
drm/nouveau: Clean up the nv17-nv4x load detection code a bit.
drm/nv50: fix fillrect color
...
Linus Torvalds [Mon, 11 Jan 2010 17:45:55 +0000 (09:45 -0800)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/jdelvare/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
hwmon: Make PCI device ids constant
hwmon: (coretemp) Fix TjMax for Atom N450/D410/D510 CPUs
hwmon: (k10temp) Blacklist more family 10h processors
hwmon: (asus_atk0110) Add debugfs interface
hwmon: (asus_atk0110) Refactor interface probe code
hwmon: (adt7462) Fix pin 28 monitoring
Avi Kivity [Sun, 10 Jan 2010 14:28:09 +0000 (16:28 +0200)]
core, x86: make LIST_POISON less deadly
The list macros use LIST_POISON1 and LIST_POISON2 as undereferencable
pointers in order to trap erronous use of freed list_heads. Unfortunately
userspace can arrange for those pointers to actually be dereferencable,
potentially turning an oops to an expolit.
To avoid this allow architectures (currently x86_64 only) to override
the default values for these pointers with truly-undereferencable values.
This is easy on x86_64 as the virtual address space is large and contains
areas that cannot be mapped.
Other 64-bit architectures will likely find similar unmapped ranges.
[ingo: switch to 0xdead000000000000 as the unmapped area]
[ingo: add comments, cleanup]
[jaswinder: eliminate sparse warnings]
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 11 Jan 2010 17:44:19 +0000 (09:44 -0800)]
Merge branch 'omap-fixes-for-linus' of git://git./linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (26 commits)
OMAP2 clock: dynamically allocate CPUFreq frequency table
OMAP clock/CPUFreq: add clk_exit_cpufreq_table()
OMAP2xxx OPP: clean up comments in OPP data
OMAP2xxx clock: clk2xxx.c doesn't compile if CPUFREQ is enabled
OMAP1 clock: remove __initdata from struct clk_functions to prevent crash
OMAP1 clock: Add missing clocks for OMAP 7xx
OMAP clock: remove incorrect EXPORT_SYMBOL()s
OMAP3 clock: Add capability to change rate of dpll4_m5_ck
OMAP3 clock: McBSP 2, 3, 4 functional clock parent is PER_96M_FCLK, not CORE_96M_FCLK
OMAP3: clock: add clockdomains for UART1 & 2
OMAP2420 IO mapping: move IVA mapping virtual address out of vmalloc space
OMAP2xxx IO mapping: mark DSP mappings as being 2420-only
ARM: OMAP3: PM: Fix the Invalid CM_CLKSTCTRL reg access.
OMAP2: remove duplicated #include
omap3: EVM: Choose OMAP_PACKAGE_CBB
omap3: Fix booting if package is uninitialized
omap3: add missing parentheses
omap3: add missing parentheses
omap2/3: ZOOM: Correcting key mapping for few keys
omap2/3: make serial_in_override() address the right uart port
...
David Howells [Fri, 8 Jan 2010 22:43:21 +0000 (14:43 -0800)]
mn10300: update the ASB2303 defconfig
Update the defconfig for the ASB2303 platform.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Fri, 8 Jan 2010 22:43:21 +0000 (14:43 -0800)]
mn10300: make the ASB2305's PCnet32 NIC work by using the PCI bridge's SRAM
Access to the ASB2305's PCnet32 NIC doesn't work correctly because when
the NIC attempts to update the ring buffer flags by DMA, the change to RAM
crops up about 17uS after the interrupt line is asserted. This is almost
certainly due to a bug in the PCI bridge FPGA on that board.
We can get around this by making dma_alloc_coherent() put the ring buffer
in the SRAM attached to the PCI bridge rather than in the SDRAM.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Fri, 8 Jan 2010 22:43:20 +0000 (14:43 -0800)]
mn10300: insert PCI root bus resources for the ASB2305 devel motherboard
Insert PCI root bus resources for the MN10300-based ASB2305 development
kit motherboard. This is required because the CPU's window onto the PCI
bus address space is considerably smaller than the CPU's full address
space and non-PCI devices lie outside of the PCI window that we might want
to access.
Without this patch, the PCI root bus uses the platform-level bus
resources, and these are then confined to the PCI window, thus making
platform_device_add() reject devices outside of this window.
We also add a reservation for the PCI SRAM region.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bjorn Helgaas [Fri, 8 Jan 2010 22:43:19 +0000 (14:43 -0800)]
mn10300: use generic pci_enable_resources()
Use the generic pci_enable_resources() instead of the arch-specific code.
Unlike this arch-specific code, the generic version:
- checks PCI_NUM_RESOURCES (11), not 6, resources
- skips resources that have neither IORESOURCE_IO nor IORESOURCE_MEM set
- skips ROM resources unless IORESOURCE_ROM_ENABLE is set
- checks for resource collisions with "!r->parent"
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Fri, 8 Jan 2010 22:43:18 +0000 (14:43 -0800)]
mn10300: use KERN_ERR not KERN_ERROR
Use KERN_ERR not KERN_ERROR in the ASB2305 platform code.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Fri, 8 Jan 2010 22:43:17 +0000 (14:43 -0800)]
mn10300: fix several bogus includes on abs2305
asm/cpu never existed for mn10300; the files they are looking for are in
asm.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Fri, 8 Jan 2010 22:43:17 +0000 (14:43 -0800)]
mn10300: wire up missing new syscalls
Wire up missing new system calls for MN10300.
Signed-off-by: David Howells <dhowelsl@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Salter [Fri, 8 Jan 2010 22:43:16 +0000 (14:43 -0800)]
mn10300: add cc clobbers to asm statements
gcc 4.2.1 for MN10300 is more agressive than the older gcc in
reordering/moving other insns between an insn that sets flags and an insn
that uses those flags. This leads to trouble with asm statements which
are missing an explicit "cc" clobber. This patch adds the explicit "cc"
clobber to asm statements which do indeed clobber the condition flags.
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Salter [Fri, 8 Jan 2010 22:43:15 +0000 (14:43 -0800)]
mn10300: objcopy flags fix
The gcc-4.2.1 based toolchain for MN10300 adds some new note sections
which need to be stripped from the binary image. This patch takes care of
that.
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Salter [Fri, 8 Jan 2010 22:43:14 +0000 (14:43 -0800)]
mn10300: signal stack fix
This fixes a signal stack handling problem in the MN10300 arch. When new
threads are cloned with CLONE_VM, they don't inherit the alternate signal
stack. They do share the signal flags, though. When deciding whether to
use an alternate stack, the arch code needs to check to make sure the task
struct contains a valid alternate stack. This patch fixes the MN10300
arch by using the sas_ss_flags() test provided by sched.h rather than the
on_sig_stack() test which is insufficient by itself.
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
OGAWA Hirofumi [Fri, 8 Jan 2010 22:43:11 +0000 (14:43 -0800)]
rtc_cmos: convert shutdown to new pnp_driver->shutdown
commit
abd6633c67925f90775bb74755f9c547e30f1f20 ("pnp: add a shutdown
method to pnp drivers") adds shutdown method to bus driver blindly. With
it, driver->shutdown is no longer valid.
Use pnp_driver->shutdown instead.
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=14889
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Reported-by: Malte Schröder <maltesch@gmx.de>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: David Hardeman <david@hardeman.nu>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
Cc: <stable@kernel.org> [2.6.32.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Minchan Kim [Fri, 8 Jan 2010 22:43:10 +0000 (14:43 -0800)]
smaps: fix wrong rss count
A long time ago we regarded zero page as file_rss and vm_normal_page
doesn't return NULL.
But now, we reinstated ZERO_PAGE and vm_normal_page's implementation can
return NULL in case of zero page. Also we don't count it with file_rss
any more.
Then, RSS and PSS can't be matched. For consistency, Let's ignore zero
page in smaps_pte_range.
Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Acked-by: Matt Mackall <mpm@selenic.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Fri, 8 Jan 2010 22:43:09 +0000 (14:43 -0800)]
documentation: update kernel-doc-nano-HOWTO information
Remove comments about function short descriptions not allowed to be on
multiple lines (that was fixed/changed recently).
Add comments that function "section header:" names need to be unique per
function/struct/union/typedef/enum.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael Hennerich [Fri, 8 Jan 2010 22:43:08 +0000 (14:43 -0800)]
gpio: adp5588-gpio: new driver for ADP5588 GPIO expanders
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Stephen Hemminger [Fri, 8 Jan 2010 22:43:08 +0000 (14:43 -0800)]
drivers/cpuidle/governors/menu.c: fix undefined reference to `__udivdi3'
menu: use proper 64 bit math
The new menu governor is incorrectly doing a 64 bit divide. Compile
tested only
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Fri, 8 Jan 2010 22:43:07 +0000 (14:43 -0800)]
Documentation: update ring-buffer-design.txt
Fix typos, grammos, spellos, hyphenation.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrea Arcangeli [Fri, 8 Jan 2010 22:43:05 +0000 (14:43 -0800)]
mm: hugetlb: fix clear_huge_page()
sz is in bytes, MAX_ORDER_NR_PAGES is in pages.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: David Gibson <dwg@au1.ibm.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: David Rientjes <rientjes@google.com>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tomaz Mertelj [Fri, 8 Jan 2010 22:43:04 +0000 (14:43 -0800)]
hwmon: driver for Texas Instruments amc6821 chip
Signed-off-by: <tomaz.mertelj@guest.arnes.si>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jani Nikula [Fri, 8 Jan 2010 22:43:03 +0000 (14:43 -0800)]
gpiolib: fix poll(2) support reconfigure on sysfs polarity change
Previously enabled poll(2) support on one edge was never reconfigured when
sysfs polarity change was triggered from kernel, because 'struct device
*dev' shadowed an earlier definition.
Found by sparse, which I should've run much earlier.
Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Uwe Kleine-König [Fri, 8 Jan 2010 22:43:02 +0000 (14:43 -0800)]
vsnprintf: fix reference for compressed ipv6 addresses
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reported-by: Josip Rodin <joy@entuzijast.net>
Cc: Joe Perches <joe@perches.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>
Adrian Hunter [Fri, 8 Jan 2010 22:43:01 +0000 (14:43 -0800)]
mmc: allow for MMC v4.4
JEDEC eMMC specification version 4.4 (MMCA 4.4) defines Extended CSD
structure versions up to 5.
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Adrian Hunter [Fri, 8 Jan 2010 22:43:00 +0000 (14:43 -0800)]
mmc_block: fix queue cleanup
The main bug was that 'blk_cleanup_queue()' was called while the block
device could still be in use, for example, because the card was removed
while files were still open.
In addition, to be sure that 'mmc_request()' will get called for all new
requests (so it can error them out), the queue is emptied during cleanup.
This is done after the worker thread is stopped to avoid racing with it.
Finally, it is not a device error for this to be happening, so quiet the
(sometimes very many) error messages.
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Cc: <linux-mmc@vger.kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jarkko Lavinen [Fri, 8 Jan 2010 22:42:59 +0000 (14:42 -0800)]
mmc_block: fix probe error cleanup bug
If mmc_blk_set_blksize() fails mmc_blk_probe() the request queue and its
thread have been set up and they need to be shut down properly before
putting the disk.
Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Cc: <linux-mmc@vger.kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anna Lemehova [Fri, 8 Jan 2010 22:42:58 +0000 (14:42 -0800)]
mmc_block: add dev_t initialization check
When a card is removed before mmc_blk_probe() has called add_disk(), then
the minor field is uninitialized and has value 0. This caused
mmc_blk_put() to always release devidx 0 even if 0 was still in use. Then
the next mmc_blk_probe() used the first free idx of 0, which oopses in
sysfs, since it is used by another card.
Signed-off-by: Anna Lemehova <EXT-Anna.Lemehova@nokia.com>
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Cc: <linux-mmc@vger.kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Fri, 8 Jan 2010 22:42:57 +0000 (14:42 -0800)]
power: fix kernel-doc notation
Warning(drivers/base/power/main.c:453): No description found for parameter 'dev'
Warning(drivers/base/power/main.c:453): No description found for parameter 'cb'
Warning(drivers/base/power/main.c:719): No description found for parameter 'dev'
Warning(drivers/base/power/main.c:719): No description found for parameter 'state'
Warning(drivers/base/power/main.c:719): No description found for parameter 'cb'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
KOSAKI Motohiro [Fri, 8 Jan 2010 22:42:56 +0000 (14:42 -0800)]
proc: partially revert "procfs: provide stack information for threads"
Commit
d899bf7b (procfs: provide stack information for threads) introduced
to show stack information in /proc/{pid}/status. But it cause large
performance regression. Unfortunately /proc/{pid}/status is used ps
command too and ps is one of most important component. Because both to
take mmap_sem and page table walk are heavily operation.
If many process run, the ps performance is,
[before
d899bf7b]
% perf stat ps >/dev/null
Performance counter stats for 'ps':
4090.435806 task-clock-msecs # 0.032 CPUs
229 context-switches # 0.000 M/sec
0 CPU-migrations # 0.000 M/sec
234 page-faults # 0.000 M/sec
8587565207 cycles # 2099.425 M/sec
9866662403 instructions # 1.149 IPC
3789415411 cache-references # 926.409 M/sec
30419509 cache-misses # 7.437 M/sec
128.
859521955 seconds time elapsed
[after
d899bf7b]
% perf stat ps > /dev/null
Performance counter stats for 'ps':
4305.081146 task-clock-msecs # 0.028 CPUs
480 context-switches # 0.000 M/sec
2 CPU-migrations # 0.000 M/sec
237 page-faults # 0.000 M/sec
9021211334 cycles # 2095.480 M/sec
10605887536 instructions # 1.176 IPC
3612650999 cache-references # 839.160 M/sec
23917502 cache-misses # 5.556 M/sec
152.
277819582 seconds time elapsed
Thus, this patch revert it. Fortunately /proc/{pid}/task/{tid}/smaps
provide almost same information. we can use it.
Commit
d899bf7b introduced two features:
1) Add the annotattion of [thread stack: xxxx] mark to
/proc/{pid}/task/{tid}/maps.
2) Add StackUsage field to /proc/{pid}/status.
I only revert (2), because I haven't seen (1) cause regression.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Stefani Seibold <stefani@seibold.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Florian Fainelli [Fri, 8 Jan 2010 22:42:54 +0000 (14:42 -0800)]
.gitignore: ignore vmlinuz
MIPS compressed kernels output a vmlinuz file in the top-level directory
(maybe others do). Add vmlinuz to the list of files to ignore by git.
Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andi Kleen [Fri, 8 Jan 2010 22:42:52 +0000 (14:42 -0800)]
kernel/signal.c: fix kernel information leak with print-fatal-signals=1
When print-fatal-signals is enabled it's possible to dump any memory
reachable by the kernel to the log by simply jumping to that address from
user space.
Or crash the system if there's some hardware with read side effects.
The fatal signals handler will dump 16 bytes at the execution address,
which is fully controlled by ring 3.
In addition when something jumps to a unmapped address there will be up to
16 additional useless page faults, which might be potentially slow (and at
least is not very efficient)
Fortunately this option is off by default and only there on i386.
But fix it by checking for kernel addresses and also stopping when there's
a page fault.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dave Anderson [Fri, 8 Jan 2010 22:42:50 +0000 (14:42 -0800)]
cgroups: fix 2.6.32 regression causing BUG_ON() in cgroup_diput()
The LTP cgroup test suite generates a "kernel BUG at kernel/cgroup.c:790!"
here in cgroup_diput():
/*
* if we're getting rid of the cgroup, refcount should ensure
* that there are no pidlists left.
*/
BUG_ON(!list_empty(&cgrp->pidlists));
The cgroup pidlist rework in 2.6.32 generates the BUG_ON, which is caused
when pidlist_array_load() calls cgroup_pidlist_find():
(1) if a matching cgroup_pidlist is found, it down_write's the mutex of the
pre-existing cgroup_pidlist, and increments its use_count.
(2) if no matching cgroup_pidlist is found, then a new one is allocated, it
down_write's its mutex, and the use_count is set to 0.
(3) the matching, or new, cgroup_pidlist gets returned back to pidlist_array_load(),
which increments its use_count -- regardless whether new or pre-existing --
and up_write's the mutex.
So if a matching list is ever encountered by cgroup_pidlist_find() during
the life of a cgroup directory, it results in an inflated use_count value,
preventing it from ever getting released by cgroup_release_pid_array().
Then if the directory is subsequently removed, cgroup_diput() hits the
BUG_ON() when it finds that the directory's cgroup is still populated with
a pidlist.
The patch simply removes the use_count increment when a matching pidlist
is found by cgroup_pidlist_find(), because it gets bumped by the calling
pidlist_array_load() function while still protected by the list's mutex.
Signed-off-by: Dave Anderson <anderson@redhat.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Ben Blum <bblum@andrew.cmu.edu>
Cc: Paul Menage <menage@google.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Fri, 8 Jan 2010 22:42:48 +0000 (14:42 -0800)]
scripts/get_maintainer.pl: fix file exclusion X: logic
The following command doesn't generate any output.
`./scripts/get_maintainer.pl --no-git -f drivers/net/wireless/wl12xx/wl1271_acx.c`
An excluded "X:" pattern match in any section would cause a file not to
match any other section.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sascha Hauer [Fri, 8 Jan 2010 22:42:47 +0000 (14:42 -0800)]
lib/rational.c needs module.h
lib/rational.c:62: warning: data definition has no type or storage class
lib/rational.c:62: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL'
lib/rational.c:62: warning: parameter names (without types) in function declaration
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Oskar Schirmer <os@emlix.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Albin Tonnerre [Fri, 8 Jan 2010 22:42:46 +0000 (14:42 -0800)]
Add LZO compression support for initramfs and old-style initrd
Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Tested-by: Wu Zhangjin <wuzhangjin@gmail.com>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Russell King <rmk@arm.linux.org.uk>
Acked-by: Russell King <rmk@arm.linux.org.uk>
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>
Albin Tonnerre [Fri, 8 Jan 2010 22:42:45 +0000 (14:42 -0800)]
x86: add support for LZO-compressed kernels
The necessary changes to the x86 Kconfig and boot/compressed to allow the
use of this new compression method
Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Tested-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Russell King <rmk@arm.linux.org.uk>
Acked-by: Russell King <rmk@arm.linux.org.uk>
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>
Albin Tonnerre [Fri, 8 Jan 2010 22:42:43 +0000 (14:42 -0800)]
arm: add support for LZO-compressed kernels
- changes to ach/arch/boot/Makefile to make it easier to add new
compression types
- new piggy.lzo.S necessary for lzo compression
- changes in arch/arm/boot/compressed/misc.c to allow the use of lzo or
gzip, depending on the config
- Kconfig support
Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Tested-by: Wu Zhangjin <wuzhangjin@gmail.com>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Russell King <rmk@arm.linux.org.uk>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Albin Tonnerre [Fri, 8 Jan 2010 22:42:42 +0000 (14:42 -0800)]
lib: add support for LZO-compressed kernels
This patch series adds generic support for creating and extracting
LZO-compressed kernel images, as well as support for using such images on
the x86 and ARM architectures, and support for creating and using
LZO-compressed initrd and initramfs images.
Russell King said:
: Testing on a Cortex A9 model:
: - lzo decompressor is 65% of the time gzip takes to decompress a kernel
: - lzo kernel is 9% larger than a gzip kernel
:
: which I'm happy to say confirms your figures when comparing the two.
:
: However, when comparing your new gzip code to the old gzip code:
: - new is 99% of the size of the old code
: - new takes 42% of the time to decompress than the old code
:
: What this means is that for a proper comparison, the results get even better:
: - lzo is 7.5% larger than the old gzip'd kernel image
: - lzo takes 28% of the time that the old gzip code took
:
: So the expense seems definitely worth the effort. The only reason I
: can think of ever using gzip would be if you needed the additional
: compression (eg, because you have limited flash to store the image.)
:
: I would argue that the default for ARM should therefore be LZO.
This patch:
The lzo compressor is worse than gzip at compression, but faster at
extraction. Here are some figures for an ARM board I'm working on:
Uncompressed size: 3.24Mo
gzip 1.61Mo 0.72s
lzo 1.75Mo 0.48s
So for a compression ratio that is still relatively close to gzip, it's
much faster to extract, at least in that case.
This part contains:
- Makefile routine to support lzo compression
- Fixes to the existing lzo compressor so that it can be used in
compressed kernels
- wrapper around the existing lzo1x_decompress, as it only extracts one
block at a time, while we need to extract a whole file here
- config dialog for kernel compression
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: cleanup]
Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Tested-by: Wu Zhangjin <wuzhangjin@gmail.com>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Russell King <rmk@arm.linux.org.uk>
Acked-by: Russell King <rmk@arm.linux.org.uk>
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>
Joakim Tjernlund [Fri, 8 Jan 2010 22:42:40 +0000 (14:42 -0800)]
zlib: optimize inffast when copying direct from output
JFFS2 uses lesser compression ratio and inflate always ends up in "copy
direct from output" case.
This patch tries to optimize the direct copy procedure. Uses
get_unaligned() but only in one place.
The copy loop just above this one can also use this optimization, but I
havn't done so as I have not tested if it is a win there too.
On my MPC8321 this is about 17% faster on my JFFS2 root FS than the
original.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Cc: Roel Kluin <roel.kluin@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Fri, 8 Jan 2010 22:42:39 +0000 (14:42 -0800)]
percpu: avoid calling __pcpu_ptr_to_addr(NULL)
__pcpu_ptr_to_addr() can be overridden by the architecture and might not
behave well if passed a NULL pointer. So avoid calling it until we have
verified that its arg is not NULL.
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Masami Hiramatsu [Fri, 8 Jan 2010 22:42:38 +0000 (14:42 -0800)]
kmod: fix resource leak in call_usermodehelper_pipe()
Fix resource (write-pipe file) leak in call_usermodehelper_pipe().
When call_usermodehelper_exec() fails, write-pipe file is opened and
call_usermodehelper_pipe() just returns an error. Since it is hard for
caller to determine whether the error occured when opening the pipe or
executing the helper, the caller cannot close the pipe by themselves.
I've found this resoruce leak when testing coredump. You can check how
the resource leaks as below;
$ echo "|nocommand" > /proc/sys/kernel/core_pattern
$ ulimit -c unlimited
$ while [ 1 ]; do ./segv; done &> /dev/null &
$ cat /proc/meminfo (<- repeat it)
where segv.c is;
//-----
int main () {
char *p = 0;
*p = 1;
}
//-----
This patch closes write-pipe file if call_usermodehelper_exec() failed.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Krzysztof Halasa [Fri, 8 Jan 2010 22:42:36 +0000 (14:42 -0800)]
dma-debug: allow DMA_BIDIRECTIONAL mappings to be synced with DMA_FROM_DEVICE and
There is no need to perform full BIDIR sync (copying the buffers in case
of swiotlb and similar schemes) if we know that the owner (CPU or device)
hasn't altered the data.
Addresses the false-positive reported at
http://bugzilla.kernel.org/show_bug.cgi?id=14169
Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Cc: David Miller <davem@davemloft.net>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vegard Nossum [Fri, 8 Jan 2010 22:42:35 +0000 (14:42 -0800)]
kmemcheck: make bitfield annotations truly no-ops when disabled
It turns out that even zero-sized struct members (int foo[0];) will affect
the struct layout, causing us in particular to lose 4 bytes in struct
sock.
This patch fixes the regression in CONFIG_KMEMCHECK=n case.
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Fri, 8 Jan 2010 22:42:34 +0000 (14:42 -0800)]
docs: large update to ioctl-number.txt
Add many ioctl definitions to ioctl-number.txt.
Fix some whitespace/formatting.
Correct some filenames/paths.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andreas Fenkart [Fri, 8 Jan 2010 22:42:31 +0000 (14:42 -0800)]
mm: make totalhigh_pages unsigned long
Makes it consistent with the extern declaration, used when CONFIG_HIGHMEM
is set Removes redundant casts in printout messages
Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jan Kara [Wed, 6 Jan 2010 17:03:36 +0000 (18:03 +0100)]
quota: Fix dquot_transfer for filesystems different from ext4
Commit
fd8fbfc1 modified the way we find amount of reserved space
belonging to an inode. The amount of reserved space is checked
from dquot_transfer and thus inode_reserved_space gets called
even for filesystems that don't provide get_reserved_space callback
which results in a BUG.
Fix the problem by checking get_reserved_space callback and return 0 if
the filesystem does not provide it.
CC: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Steven Whitehouse [Fri, 8 Jan 2010 13:44:49 +0000 (13:44 +0000)]
GFS2: Use MAX_LFS_FILESIZE for meta inode size
Using ~0ULL was cauing sign issues in filemap_fdatawrite_range, so
use MAX_LFS_FILESIZE instead.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bjorn Helgaas [Thu, 7 Jan 2010 19:58:56 +0000 (12:58 -0700)]
agp/hp: fail gracefully if we don't find an IOC
Bail out if we don't find an enclosing IOC. Previously, if we didn't
find one, we tried to set things up using garbage for the SBA/IOC register
address, which causes a crash.
This crash only happens if firmware supplies a defective ACPI namespace, so
it doesn't fix any problems in the field.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Bjorn Helgaas [Thu, 7 Jan 2010 19:58:51 +0000 (12:58 -0700)]
agp/hp: fixup hp agp after ACPI changes
Commit
15b8dd53f5ffa changed the string in info->hardware_id from a static
array to a pointer and added a length field. But instead of changing
"sizeof(array)" to "length", we changed it to "sizeof(length)" (== 4),
which corrupts the string we're trying to null-terminate.
We no longer even need to null-terminate the string, but we *do* need to
check whether we found a HID. If there's no HID, we used to have an empty
array, but now we have a null pointer.
The combination of these defects causes this oops:
Unable to handle kernel NULL pointer dereference (address
0000000000000003)
modprobe[895]: Oops
8804682956800 [1]
ip is at zx1_gart_probe+0xd0/0xcc0 [hp_agp]
http://marc.info/?l=linux-ia64&m=
126264484923647&w=2
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Reported-by: Émeric Maschino <emeric.maschino@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Kevin Winchester [Tue, 17 Nov 2009 22:38:45 +0000 (14:38 -0800)]
agp: correct missing cleanup on error in agp_add_bridge
While investigating a kmemleak detected leak, I encountered the
agp_add_bridge function. It appears to be responsible for freeing
the agp_bridge_data in the case of a failure, but it is only doing
so for some errors.
Fix it to always free the bridge data if a failure condition is
encountered.
Signed-off-by: Kevin Winchester <kjwinchester@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Mon, 11 Jan 2010 04:43:16 +0000 (14:43 +1000)]
Merge branch 'for-airlied' of /ssd/git/drm-nouveau-next into drm-linus
* 'for-airlied' of /ssd/git/drm-nouveau-next: (28 commits)
drm/nv04: Fix set_operation software method.
drm/nouveau: initialise DMA tracking parameters earlier
drm/nouveau: use dma.max rather than pushbuf size for checking GET validity
drm/nv04: differentiate between nv04/nv05
drm/nouveau: Fix null deref in nouveau_fence_emit due to deleted fence
drm/nv50: prevent a possible ctxprog hang
drm/nouveau: have ttm's fault handler called directly
drm/nv50: restore correct cache1 get/put address on fifoctx load
drm/nouveau: create function for "dealing" with gpu lockup
drm/nouveau: remove unused nouveau_channel_idle() function
drm/nouveau: fix handling of fbcon colours in 8bpp
drm/nv04: Context switching fixes.
drm/nouveau: Use the software object for fencing.
drm/nouveau: Allocate a per-channel instance of NV_SW.
drm/nv50: make the blocksize depend on vram size
drm/nouveau: better alignment of bo sizes and use roundup instead of ALIGN
drm/nouveau: Don't skip card take down on nv0x.
drm/nouveau: Implement nv42-nv43 TV load detection.
drm/nouveau: Clean up the nv17-nv4x load detection code a bit.
drm/nv50: fix fillrect color
...
Dave Airlie [Mon, 11 Jan 2010 04:42:58 +0000 (14:42 +1000)]
Merge remote branch 'korg/drm-radeon-next' into drm-linus
* korg/drm-radeon-next:
drm/radeon/kms: add additional safe regs for r4xx/rs6xx and r5xx
drm/radeon/kms: Don't try to enable IRQ if we have no handler installed
drm: Avoid calling vblank function is vblank wasn't initialized
drm/radeon: mkregtable.c: close a file before exit
drm/radeon/kms: Make sure we release AGP device if we acquired it
drm/radeon/kms: Schedule host path read cache flush through the ring V2
drm/radeon/kms: Workaround RV410/R420 CP errata (V3)
drm/radeon/kms: detect sideport memory on IGP chips
drm/radeon: fix a couple of array index errors
drm/radeon/kms: add support for eDP (embedded DisplayPort)
drm: Add eDP connector type
drm/radeon/kms: pull in the latest upstream ObjectID.h changes
drm/radeon/kms: whitespace changes to ObjectID.h
drm/radeon/kms: fix typo in atom connector type handling
Marcin Kościelnicki [Sun, 10 Jan 2010 17:09:14 +0000 (17:09 +0000)]
drm/nv04: Fix set_operation software method.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Fri, 8 Jan 2010 00:57:39 +0000 (10:57 +1000)]
drm/nouveau: initialise DMA tracking parameters earlier
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Fri, 8 Jan 2010 00:53:40 +0000 (10:53 +1000)]
drm/nouveau: use dma.max rather than pushbuf size for checking GET validity
Some upcoming G80 DMA changes will depend on this, but it's split out for
bisectibility just in case it causes some unexpected issues.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Thu, 7 Jan 2010 03:47:57 +0000 (13:47 +1000)]
drm/nv04: differentiate between nv04/nv05
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Luca Barbieri [Wed, 6 Jan 2010 03:02:45 +0000 (04:02 +0100)]
drm/nouveau: Fix null deref in nouveau_fence_emit due to deleted fence
Currently Nouveau will unvalidate all buffers if it is forced to wait on
one, and then start revalidating from the beginning. While doing so, it
destroys the operation fence, causing nouveau_fence_emit to crash.
This patch fixes this bug by taking the fence object out of validate_op
and creating it just before emit. The fence pointer is initialized to 0
and unref'ed unconditionally.
In addition to fixing the bug, this prevents its reintroduction and
simplifies the code.
Signed-off-by: Luca Barbieri <luca@luca-barbieri.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Wed, 6 Jan 2010 02:00:02 +0000 (12:00 +1000)]
drm/nv50: prevent a possible ctxprog hang
The below is mainly an educated guess at what's going on, docs would
sure be handy... NVIDIA? :P
It appears it's possible for a ctxprog to run even while a GPU exception
is pending. The GF8 and up ctxprogs appear to have a small snippet of
code which detects this, and stalls the ctxprog until it's been handled,
which essentially looks like:
if (r2 & 0x00008000) {
r0 |= 0x80000000;
while (r0 & 0x80000000) {}
}
I don't know of any way that flag would get cleared unless the driver
intervenes (and indeed, in the cases I've seen the hang, nothing steps
in to automagically clear it for us). This patch causes the driver to
clear the flag during the PGRAPH IRQ handler.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Mon, 4 Jan 2010 05:52:20 +0000 (15:52 +1000)]
drm/nouveau: have ttm's fault handler called directly
There's no good reason for us to have our own anymore, this is left over
from an early port to these TTM interfaces.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Mon, 4 Jan 2010 23:41:05 +0000 (09:41 +1000)]
drm/nv50: restore correct cache1 get/put address on fifoctx load
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Marcin Slusarz [Mon, 4 Jan 2010 18:25:09 +0000 (19:25 +0100)]
drm/nouveau: create function for "dealing" with gpu lockup
It's mostly a cleanup, but in nv50_fbcon_accel_init gpu lockup
message was printed, but HWACCEL_DISBALED flag was not set.
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Mon, 4 Jan 2010 02:53:01 +0000 (12:53 +1000)]
drm/nouveau: remove unused nouveau_channel_idle() function
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Sun, 3 Jan 2010 23:10:55 +0000 (09:10 +1000)]
drm/nouveau: fix handling of fbcon colours in 8bpp
Depending on the visual, the colours handed to us in fillrect() can either be
an actual colour, or an index into the pseudo-palette.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Francisco Jerez [Sat, 26 Dec 2009 13:39:46 +0000 (14:39 +0100)]
drm/nv04: Context switching fixes.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Francisco Jerez [Sat, 26 Dec 2009 01:09:36 +0000 (02:09 +0100)]
drm/nouveau: Use the software object for fencing.
This should avoid a race condition on nv0x, if we're doing it with
actual PGRAPH objects and a there's a fence within the FIFO DMA fetch
area when a context switch kicks in.
In that case we get an ILLEGAL_MTHD interrupt as expected, but the
values in PGRAPH_TRAPPED_ADDR aren't calculated correctly and they're
almost useless (e.g. you can see ILLEGAL_MTHDs for the now inactive
channel, with a wrong offset/data pair).
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Francisco Jerez [Sat, 26 Dec 2009 01:42:45 +0000 (02:42 +0100)]
drm/nouveau: Allocate a per-channel instance of NV_SW.
It will be useful for various synchronization purposes, mostly stolen
from "[PATCH] drm/nv50: synchronize user channel after buffer object
move on kernel channel" by Maarten Maathuis.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Maarten Maathuis [Sat, 26 Dec 2009 20:46:36 +0000 (21:46 +0100)]
drm/nv50: make the blocksize depend on vram size
- This should be better than what we have now.
- I'm less sure about the non power of two path.
Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Maarten Maathuis [Fri, 25 Dec 2009 17:51:17 +0000 (18:51 +0100)]
drm/nouveau: better alignment of bo sizes and use roundup instead of ALIGN
- Aligning to block size should ensure that the extra size is enough.
- Using roundup, because not all sizes are powers of two.
Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Francisco Jerez [Tue, 22 Dec 2009 17:24:09 +0000 (18:24 +0100)]
drm/nouveau: Don't skip card take down on nv0x.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Francisco Jerez [Thu, 17 Dec 2009 17:57:44 +0000 (18:57 +0100)]
drm/nouveau: Implement nv42-nv43 TV load detection.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Francisco Jerez [Thu, 17 Dec 2009 17:52:44 +0000 (18:52 +0100)]
drm/nouveau: Clean up the nv17-nv4x load detection code a bit.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Marcin Slusarz [Mon, 21 Dec 2009 22:00:41 +0000 (23:00 +0100)]
drm/nv50: fix fillrect color
struct fb_fillrect->color is not a color, but index into pseudo_palette
array
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Mon, 21 Dec 2009 02:16:52 +0000 (12:16 +1000)]
drm/nv50: ignore vbios table's claim to the contrary if EDID says >8bpc
Should fix dim panel issues reported on Dell M6400/M6500.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Francisco Jerez [Wed, 16 Dec 2009 18:03:28 +0000 (19:03 +0100)]
drm/nouveau: Drop redundant placement initialization.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Francisco Jerez [Wed, 16 Dec 2009 18:05:38 +0000 (19:05 +0100)]
drm/nouveau: No need to force evict=true when swapping evicted BOs back in.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Francisco Jerez [Wed, 16 Dec 2009 18:05:00 +0000 (19:05 +0100)]
drm/nouveau: Fix "general protection fault" in the flipd/flips eviction path.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Francisco Jerez [Wed, 16 Dec 2009 11:27:11 +0000 (12:27 +0100)]
drm/i2c/ch7006: Drop build time dependency to nouveau.
This partially reverts
e4b41066, as this driver is intended to be
useful with any KMS driver for suitable hardware. The missing build
dependency that commit workarounded was DRM_KMS_HELPER.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>