8 years agoslub: Revert "[PARISC] slub: fix panic with DISCONTIGMEM"
David Rientjes [Wed, 11 May 2011 00:08:54 +0000]
slub: Revert "[PARISC] slub: fix panic with DISCONTIGMEM"

This reverts commit 4a5fa3590f09, which did not allow SLUB to be used
on architectures that use DISCONTIGMEM without compiling NUMA support
without CONFIG_BROKEN also set.

The slub panic that it was intended to prevent is addressed by
d9b41e0b54fd ("[PARISC] set memory ranges in N_NORMAL_MEMORY when
onlined") on parisc so there is no further slub issues with such a
configuration.

The reverts allows SLUB now to be used on such architectures since
there haven't been any reports of additional errors.

Cc: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Tue, 10 May 2011 19:00:53 +0000]
Merge branch 'upstream' of git://git.linux-mips.org/upstream-linus

* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (28 commits)
  MIPS: Alchemy: fix xxs1500 build error
  MIPS: Invalidate old TLB mappings when updating huge page PTEs.
  MIPS: Hibernation: Fixes for PAGE_SIZE >= 64kb
  MIPS: JZ4740: Set one-shot feature flag for the clockevent
  MIPS: JZ4740: Export symbols to the watchdog driver module
  MIPS: JZ4740: Fix GCC 4.6.0 build error.
  MIPS: Audit: Fix success success argument pass to audit_syscall_exit
  MIPS: Fix calc_vmlinuz_load_addr build warnings.
  MIPS: Alchemy: Fix GCC 4.6.0 build error.
  MIPS: Document former use of timerfd(2) syscall number.
  MIPS: IP27: Fix GCC 4.6.0 build error.
  MIPS: IP27: Fix GCC 4.6.0 build error.
  MIPS: bcm63xx: Fix header_crc comment in bcm963xx_tag.h
  MIPS: Octeon: Guard the Kconfig body with CPU_CAVIUM_OCTEON
  MIPS: Octeon: Cleanup Kconfig IRQ_CPU* symbols.
  MIPS: Rename .data..mostly and properly handle it in linker script
  MIPS: MSP: Fix build error
  MIPS: MSP71xx: Fix typo in msp_per_irq_controller
  MIPS: Loongson: Fix GCC 2.6.0 build error.
  MIPS: Jazz: Fix GCC 4.6.0 build error
  ...

8 years agoMerge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Tue, 10 May 2011 18:56:35 +0000]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: fix race condition in AIL push trigger
  xfs: make AIL target updates and compares 32bit safe.
  xfs: always push the AIL to the target
  xfs: exit AIL push work correctly when AIL is empty
  xfs: ensure reclaim cursor is reset correctly at end of AG

8 years agoMIPS: Alchemy: fix xxs1500 build error
Manuel Lauss [Sat, 7 May 2011 11:55:19 +0000]
MIPS: Alchemy: fix xxs1500 build error

This fixes:
alchemy/xxs1500/init.c: In function 'prom_init':
alchemy/xxs1500/init.c:57:17: error: ignoring return value of 'kstrtoul', declared with attribute warn_unused_result

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2340/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Invalidate old TLB mappings when updating huge page PTEs.
David Daney [Wed, 27 Apr 2011 23:39:28 +0000]
MIPS: Invalidate old TLB mappings when updating huge page PTEs.

Without this, stale Icache or TLB entries may be used.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
https://patchwork.linux-mips.org/patch/2318/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Hibernation: Fixes for PAGE_SIZE >= 64kb
Wu Zhangjin [Sat, 23 Apr 2011 21:56:59 +0000]
MIPS: Hibernation: Fixes for PAGE_SIZE >= 64kb

PAGE_SIZE >= 64kb (1 << 16) is too big to be the immediate of the
addiu/daddiu instruction, so, use addu/daddu instruction instead.

The following compiling error is fixed:

AS      arch/mips/power/hibernate.o
arch/mips/power/hibernate.S: Assembler messages:
arch/mips/power/hibernate.S:38: Error: expression out of range
make[2]: *** [arch/mips/power/hibernate.o] Error 1
make[1]: *** [arch/mips/power] Error 2

Reported-by: Roman Mamedov <rm@romanrm.ru>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2313/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: JZ4740: Set one-shot feature flag for the clockevent
Lars-Peter Clausen [Thu, 31 Mar 2011 18:52:20 +0000]
MIPS: JZ4740: Set one-shot feature flag for the clockevent

The code for supporting one-shot mode for the clockevent is already there,
only the feature flag was not set.  Setting the one-shot flag allows the
kernel to run in tickless mode.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2261/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: JZ4740: Export symbols to the watchdog driver module
Ralf Baechle [Mon, 18 Apr 2011 10:19:32 +0000]
MIPS: JZ4740: Export symbols to the watchdog driver module

  MODPOST 356 modules
ERROR: "jz4740_timer_disable_watchdog" [drivers/watchdog/jz4740_wdt.ko] undefine
d!
ERROR: "jz4740_timer_enable_watchdog" [drivers/watchdog/jz4740_wdt.ko] undefined
!
make[1]: *** [__modpost] Error 1

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: JZ4740: Fix GCC 4.6.0 build error.
Ralf Baechle [Mon, 18 Apr 2011 10:16:42 +0000]
MIPS: JZ4740: Fix GCC 4.6.0 build error.

CC arch/mips/jz4740/dma.o
arch/mips/jz4740/dma.c: In function 'jz4740_dma_chan_irq':
arch/mips/jz4740/dma.c:245:11: error: variable 'status' set but not used [-Werro
r=unused-but-set-variable]

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Audit: Fix success success argument pass to audit_syscall_exit
Ralf Baechle [Wed, 13 Apr 2011 21:51:23 +0000]
MIPS: Audit: Fix success success argument pass to audit_syscall_exit

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Fix calc_vmlinuz_load_addr build warnings.
Ralf Baechle [Wed, 13 Apr 2011 19:49:54 +0000]
MIPS: Fix calc_vmlinuz_load_addr build warnings.

  HOSTCC  arch/mips/boot/compressed/calc_vmlinuz_load_addr
arch/mips/boot/compressed/calc_vmlinuz_load_addr.c: In function 'main':
arch/mips/boot/compressed/calc_vmlinuz_load_addr.c:35:2: warning: format '%llx' expects type 'long long unsigned int *', but argument 3 has type 'uint64_t *'
arch/mips/boot/compressed/calc_vmlinuz_load_addr.c:54:2: warning: format '%llx' expects type 'long long unsigned int', but argument 2 has type 'uint64_t'

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Alchemy: Fix GCC 4.6.0 build error.
Ralf Baechle [Wed, 13 Apr 2011 19:15:09 +0000]
MIPS: Alchemy: Fix GCC 4.6.0 build error.

CC arch/mips/alchemy/devboards/db1x00/board_setup.o
arch/mips/alchemy/devboards/db1x00/board_setup.c: In function 'board_setup':
arch/mips/alchemy/devboards/db1x00/board_setup.c:130:6: error: variable 'pin_func' set but not used [-Werror=unused-but-set-variable]

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Document former use of timerfd(2) syscall number.
Ralf Baechle [Wed, 13 Apr 2011 18:50:46 +0000]
MIPS: Document former use of timerfd(2) syscall number.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: IP27: Fix GCC 4.6.0 build error.
Ralf Baechle [Mon, 11 Apr 2011 09:48:31 +0000]
MIPS: IP27: Fix GCC 4.6.0 build error.

CC arch/mips/sgi-ip27/ip27-hubio.o
arch/mips/sgi-ip27/ip27-hubio.c: In function 'hub_pio_map':
arch/mips/sgi-ip27/ip27-hubio.c:32:20: error: variable 'junk' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: IP27: Fix GCC 4.6.0 build error.
Ralf Baechle [Mon, 11 Apr 2011 09:37:15 +0000]
MIPS: IP27: Fix GCC 4.6.0 build error.

CC arch/mips/sgi-ip27/ip27-hubio.o
arch/mips/sgi-ip27/ip27-hubio.c: In function 'hub_pio_map':
arch/mips/sgi-ip27/ip27-hubio.c:32:20: error: variable 'junk' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: bcm63xx: Fix header_crc comment in bcm963xx_tag.h
Jonas Gorski [Fri, 8 Apr 2011 12:32:15 +0000]
MIPS: bcm63xx: Fix header_crc comment in bcm963xx_tag.h

The CRC32 actually includes the tag_version.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2275/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Octeon: Guard the Kconfig body with CPU_CAVIUM_OCTEON
David Daney [Fri, 18 Feb 2011 02:23:32 +0000]
MIPS: Octeon: Guard the Kconfig body with CPU_CAVIUM_OCTEON

Instead of making each Octeon specific option depend on
CPU_CAVIUM_OCTEON, gate the body of the entire file with
CPU_CAVIUM_OCTEON.  With this change, CAVIUM_OCTEON_SPECIFIC_OPTIONS
becomes useless, so get rid of it as well.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2091/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Octeon: Cleanup Kconfig IRQ_CPU* symbols.
David Daney [Thu, 17 Feb 2011 22:04:33 +0000]
MIPS: Octeon: Cleanup Kconfig IRQ_CPU* symbols.

Octeon doesn't use IRQ_CPU, so don't select it.

IRQ_CPU_OCTEON is a completely unused symbol, remove it completely.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2086/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Rename .data..mostly and properly handle it in linker script
Catalin Marinas [Tue, 29 Mar 2011 10:40:06 +0000]
MIPS: Rename .data..mostly and properly handle it in linker script

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: MSP: Fix build error
Ralf Baechle [Tue, 29 Mar 2011 14:09:25 +0000]
MIPS: MSP: Fix build error

Reported and original patch by Yoichi Yuasa <yuasa@linux-mips.org>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: MSP71xx: Fix typo in msp_per_irq_controller
Yoichi Yuasa [Tue, 29 Mar 2011 06:53:56 +0000]
MIPS: MSP71xx: Fix typo in msp_per_irq_controller

CC arch/mips/pmc-sierra/msp71xx/msp_irq_per.o
arch/mips/pmc-sierra/msp71xx/msp_irq_per.c:101:2: error: expected identifier before '.' token
make[2]: *** [arch/mips/pmc-sierra/msp71xx/msp_irq_per.o] Error 1

Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2246/
Cc: linux-mips <linux-mips@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Loongson: Fix GCC 2.6.0 build error.
Ralf Baechle [Tue, 29 Mar 2011 10:32:55 +0000]
MIPS: Loongson: Fix GCC 2.6.0 build error.

CC arch/mips/loongson/common/env.o
arch/mips/loongson/common/env.c: In function 'prom_init_env':
arch/mips/loongson/common/env.c:50:12: error: variable 'ret' set but not used [-Werror=unused-but-set-variable]
arch/mips/loongson/common/env.c:51:12: error: variable 'ret' set but not used [-Werror=unused-but-set-variable]
arch/mips/loongson/common/env.c:52:12: error: variable 'ret' set but not used [-Werror=unused-but-set-variable]
arch/mips/loongson/common/env.c:53:12: error: variable 'ret' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Jazz: Fix GCC 4.6.0 build error
Ralf Baechle [Tue, 29 Mar 2011 10:09:51 +0000]
MIPS: Jazz: Fix GCC 4.6.0 build error

CC arch/mips/jazz/jazzdma.o
arch/mips/jazz/jazzdma.c: In function 'vdma_remap':
arch/mips/jazz/jazzdma.c:214:20: error: variable 'npages' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: SNI: Fix GCC 4.6.0 build error
Ralf Baechle [Tue, 29 Mar 2011 09:57:11 +0000]
MIPS: SNI: Fix GCC 4.6.0 build error

CC arch/mips/sni/time.o
arch/mips/sni/time.c: In function 'dosample':
arch/mips/sni/time.c:98:19: error: variable 'lsb' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Malta: Fix GCC 4.6.0 build error
Ralf Baechle [Tue, 29 Mar 2011 09:48:22 +0000]
MIPS: Malta: Fix GCC 4.6.0 build error

CC arch/mips/mti-malta/malta-int.o
arch/mips/mti-malta/malta-int.c: In function 'mips_pcibios_iack':
arch/mips/mti-malta/malta-int.c:59:6: error: variable 'dummy' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Malta: Fix GCC 4.6.0 build error
Ralf Baechle [Tue, 29 Mar 2011 09:43:19 +0000]
MIPS: Malta: Fix GCC 4.6.0 build error

CC arch/mips/mti-malta/malta-init.o
arch/mips/mti-malta/malta-init.c: In function 'prom_init':
arch/mips/mti-malta/malta-init.c:196:6: error: variable 'result' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: IP22: Fix GCC 4.6.0 build error
Ralf Baechle [Tue, 29 Mar 2011 09:06:49 +0000]
MIPS: IP22: Fix GCC 4.6.0 build error

CC arch/mips/sgi-ip22/ip22-platform.o
arch/mips/sgi-ip22/ip22-platform.c: In function 'sgiseeq_devinit':
arch/mips/sgi-ip22/ip22-platform.c:135:15: error: variable 'tmp' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

While at it rename the variable to pbdma for readability; there is a
local variable tmp of different type being used in two nested blocks.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: IP22: Fix GCC 4.6.0 build error
Ralf Baechle [Tue, 29 Mar 2011 09:00:44 +0000]
MIPS: IP22: Fix GCC 4.6.0 build error

CC arch/mips/sgi-ip22/ip22-time.o
arch/mips/sgi-ip22/ip22-time.c: In function 'dosample':
arch/mips/sgi-ip22/ip22-time.c:35:10: error: variable 'lsb' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: tlbex: Fix GCC 4.6.0 build error
Ralf Baechle [Tue, 29 Mar 2011 08:54:54 +0000]
MIPS: tlbex: Fix GCC 4.6.0 build error

CC arch/mips/mm/tlbex.o
arch/mips/mm/tlbex.c: In function 'build_r4000_tlb_refill_handler':
arch/mips/mm/tlbex.c:1155:22: error: variable 'vmalloc_mode' set but not used [-Werror=unused-but-set-variable]
arch/mips/mm/tlbex.c:1154:28: error: variable 'htlb_info' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: c-r4k: Fix GCC 4.6.0 build error
Ralf Baechle [Tue, 29 Mar 2011 08:50:38 +0000]
MIPS: c-r4k: Fix GCC 4.6.0 build error

CC arch/mips/mm/c-r4k.o
arch/mips/mm/c-r4k.c: In function 'probe_scache':
arch/mips/mm/c-r4k.c:1078:6: error: variable 'tmp' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Older GCC versions didn't warn about the unused variable tmp because it was
getting initialized.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMIPS: Mask jump target in ftrace_dyn_arch_init_insns().
David Daney [Tue, 28 Dec 2010 21:21:37 +0000]
MIPS: Mask jump target in ftrace_dyn_arch_init_insns().

The current code is abusing the uasm interface by passing jump target
addresses with high bits set.  Mask the addresses to avoid annoying
messages at boot time.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/1922/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2
Linus Torvalds [Tue, 10 May 2011 16:41:03 +0000]
Merge branch 'fixes' of git://git./linux/kernel/git/ryusuke/nilfs2

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: fix infinite loop in nilfs_palloc_freev function

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh...
Linus Torvalds [Tue, 10 May 2011 16:39:11 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/ericvh/v9fs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  net/9p: Handle get_user_pages_fast return properly

8 years agonilfs2: fix infinite loop in nilfs_palloc_freev function
Ryusuke Konishi [Tue, 10 May 2011 11:59:34 +0000]
nilfs2: fix infinite loop in nilfs_palloc_freev function

After having applied commit 9954e7af14868b8b ("nilfs2: add free
entries count only if clear bit operation succeeded"), a free routine
of nilfs came to fall into an infinite loop, outputting the same
message endlessly:

 nilfs_palloc_freev: entry number 29497 already freed
 nilfs_palloc_freev: entry number 29497 already freed
 nilfs_palloc_freev: entry number 29497 already freed
 nilfs_palloc_freev: entry number 29497 already freed
 nilfs_palloc_freev: entry number 29497 already freed ...

That patch broke the routine so that a loop counter is never updated
in an abnormal state.  This fixes the regression.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

8 years agonet/9p: Handle get_user_pages_fast return properly
M. Mohan Kumar [Fri, 15 Apr 2011 08:29:33 +0000]
net/9p: Handle get_user_pages_fast return properly

Use proper data type to handle get_user_pages_fast error condition. Also
do not treat EFAULT error as fatal.

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

8 years agoLinux 2.6.39-rc7
Linus Torvalds [Tue, 10 May 2011 02:33:54 +0000]
Linux 2.6.39-rc7

8 years agovm: fix vm_pgoff wrap in upward expansion
Hugh Dickins [Tue, 10 May 2011 00:44:42 +0000]
vm: fix vm_pgoff wrap in upward expansion

Commit a626ca6a6564 ("vm: fix vm_pgoff wrap in stack expansion") fixed
the case of an expanding mapping causing vm_pgoff wrapping when you had
downward stack expansion.  But there was another case where IA64 and
PA-RISC expand mappings: upward expansion.

This fixes that case too.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoMerge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keith...
Linus Torvalds [Mon, 9 May 2011 23:59:51 +0000]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/keithp/linux-2.6

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6:
  drm/i915/lvds: Only act on lid notify when the device is on
  drm/i915: fix intel_crtc_clock_get pipe reads after "cleanup cleanup"
  drm/i915: Only enable the plane after setting the fb base (pre-ILK)
  drm/i915/dp: Be paranoid in case we disable a DP before it is attached
  drm/i915: Release object along create user fb error path

8 years agoxfs: fix race condition in AIL push trigger
Dave Chinner [Fri, 6 May 2011 02:54:08 +0000]
xfs: fix race condition in AIL push trigger

The recent conversion of the xfsaild functionality to a work queue
introduced a hard-to-hit log space grant hang. One is caused by a
race condition in determining whether there is a psh in progress or
not.

The XFS_AIL_PUSHING_BIT is used to determine whether a push is
currently in progress.  When the AIL push work completes, it checked
whether the target changed and cleared the PUSHING bit to allow a
new push to be requeued. The race condition is as follows:

Thread 1 push work

smp_wmb()
smp_rmb()
check ailp->xa_target unchanged
update ailp->xa_target
test/set PUSHING bit
does not queue
clear PUSHING bit
does not requeue

Now that the push target is updated, new attempts to push the AIL
will not trigger as the push target will be the same, and hence
despite trying to push the AIL we won't ever wake it again.

The fix is to ensure that the AIL push work clears the PUSHING bit
before it checks if the target is unchanged.

As a result, both push triggers operate on the same test/set bit
criteria, so even if we race in the push work and miss the target
update, the thread requesting the push will still set the PUSHING
bit and queue the push work to occur. For safety sake, the same
queue check is done if the push work detects the target change,
though only one of the two will will queue new work due to the use
of test_and_set_bit() checks.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>

(cherry picked from commit e4d3c4a43b595d5124ae824d300626e6489ae857)

8 years agoxfs: make AIL target updates and compares 32bit safe.
Dave Chinner [Fri, 6 May 2011 02:54:07 +0000]
xfs: make AIL target updates and compares 32bit safe.

The recent conversion of the xfsaild functionality to a work queue
introduced a hard-to-hit log space grant hang. One of the problems
noticed was that updates of the push target are not 32 bit safe as
the target is a 64 bit value.

We cannot copy a 64 bit LSN without the possibility of corrupting
the result when racing with another updating thread. We have
function to do this update safely without needing to care about
32/64 bit issues - xfs_trans_ail_copy_lsn() - so use that when
updating the AIL push target.

Also move the reading of the target in the push work inside the AIL
lock, and use XFS_LSN_CMP() for the unlocked comparison during work
termination to close read holes as well.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>

(cherry picked from commit fd5670f22fce247754243cf2ed41941e5762d990)

8 years agoxfs: always push the AIL to the target
Dave Chinner [Fri, 6 May 2011 02:54:06 +0000]
xfs: always push the AIL to the target

The recent conversion of the xfsaild functionality to a work queue
introduced a hard-to-hit log space grant hang. One of the problems
discovered is a target mismatch between the item pushing loop and
the target itself.

The push trigger checks for the target increasing (i.e. new target >
current) while the push loop only pushes items that have a LSN <
current. As a result, we can get the situation where the push target
is X, the items at the tail of the AIL have LSN X and they don't get
pushed. The push work then completes thinking it is done, and cannot
be restarted until the push target increases to >= X + 1. If the
push target then never increases (because the tail is not moving),
then we never run the push work again and we stall.

Fix it by making sure log items with a LSN that matches the target
exactly are pushed during the loop.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>

(cherry picked from commit cb64026b6e8af50db598ec7c3f59d504259b00bb)

8 years agoxfs: exit AIL push work correctly when AIL is empty
Dave Chinner [Fri, 6 May 2011 02:54:05 +0000]
xfs: exit AIL push work correctly when AIL is empty

The recent conversion of the xfsaild functionality to a work queue
introduced a hard-to-hit log space grant hang. The main cause is a
regression where a work exit path fails to clear the PUSHING state
and recheck the target correctly.

Make both exit paths do the same PUSHING bit clearing and target
checking when the "no more work to be done" condition is hit.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>

(cherry picked from commit ea35a20021f8497390d05b93271b4d675516c654)

8 years agoxfs: ensure reclaim cursor is reset correctly at end of AG
Dave Chinner [Fri, 6 May 2011 02:54:04 +0000]
xfs: ensure reclaim cursor is reset correctly at end of AG

On a 32 bit highmem PowerPC machine, the XFS inode cache was growing
without bound and exhausting low memory causing the OOM killer to be
triggered. After some effort, the problem was reproduced on a 32 bit
x86 highmem machine.

The problem is that the per-ag inode reclaim index cursor was not
getting reset to the start of the AG if the radix tree tag lookup
found no more reclaimable inodes. Hence every further reclaim
attempt started at the same index beyond where any reclaimable
inodes lay, and no further background reclaim ever occurred from the
AG.

Without background inode reclaim the VM driven cache shrinker
simply cannot keep up with cache growth, and OOM is the result.

While the change that exposed the problem was the conversion of the
inode reclaim to use work queues for background reclaim, it was not
the cause of the bug. The bug was introduced when the cursor code
was added, just waiting for some weird configuration to strike....

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Tested-By: Christian Kujau <lists@nerdbynature.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>

(cherry picked from commit b223221956675ce8a7b436d198ced974bb388571)

8 years agoDon't lock guardpage if the stack is growing up
Mikulas Patocka [Mon, 9 May 2011 11:01:09 +0000]
Don't lock guardpage if the stack is growing up

Linux kernel excludes guard page when performing mlock on a VMA with
down-growing stack. However, some architectures have up-growing stack
and locking the guard page should be excluded in this case too.

This patch fixes lvm2 on PA-RISC (and possibly other architectures with
up-growing stack). lvm2 calculates number of used pages when locking and
when unlocking and reports an internal error if the numbers mismatch.

[ Patch changed fairly extensively to also fix /proc/<pid>/maps for the
  grows-up case, and to move things around a bit to clean it all up and
  share the infrstructure with the /proc bits.

  Tested on ia64 that has both grow-up and grow-down segments  - Linus ]

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Tested-by: Tony Luck <tony.luck@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platf...
Linus Torvalds [Mon, 9 May 2011 19:00:49 +0000]
Merge branch 'for_linus' of git://git./linux/kernel/git/mjg59/platform-drivers-x86

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86:
  eeepc-laptop: Use ACPI handle to identify rfkill port
  [PATCH] sony-laptop: limit brightness range to DSDT provided ones
  sony-laptop: report failures on setting LCD brightness
  thinkpad-acpi: module autoloading for newer Lenovo ThinkPads.

8 years agodrm/i915/lvds: Only act on lid notify when the device is on
Alex Williamson [Thu, 21 Apr 2011 22:08:14 +0000]
drm/i915/lvds: Only act on lid notify when the device is on

If we're using vga switcheroo, the device may be turned off
and poking it can return random state. This provokes an OOPS fixed
separately by 8ff887c847 (drm/i915/dp: Be paranoid in case we disable a
DP before it is attached). Trying to use and respond to events on a
device that has been turned off by the user is in principle a silly thing
to do.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Keith Packard <keithp@keithp.com>

8 years agodrm/i915: fix intel_crtc_clock_get pipe reads after "cleanup cleanup"
Chris Wilson [Fri, 22 Apr 2011 21:17:21 +0000]
drm/i915: fix intel_crtc_clock_get pipe reads after "cleanup cleanup"

Despite the fixes in 548f245ba6a31 (drm/i915: fix per-pipe reads after
"cleanup"), we missed one neighbouring read that was mistakenly replaced
with the reg value in 9db4a9c (drm/i915: cleanup per-pipe reg usage).
This was preventing us from correctly determining the mode the BIOS left
the panel in for machines that neither have an OpRegion nor access to
the VBT, (e.g. the EeePC 700).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: stable@kernel.org
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>

8 years agodrm/i915: Only enable the plane after setting the fb base (pre-ILK)
Chris Wilson [Tue, 19 Apr 2011 20:14:14 +0000]
drm/i915: Only enable the plane after setting the fb base (pre-ILK)

When enabling the plane, it is helpful to have already pointed that
plane to valid memory or else we may incur the wrath of a PGTBL_ER.
This code preserved the behaviour from the bad old days for unknown
reasons...

Found by assert_fb_bound_for_plane().

References: https://bugs.freedesktop.org/show_bug.cgi?id=36246
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>

8 years agoMerge branch 'fix/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Mon, 9 May 2011 16:13:10 +0000]
Merge branch 'fix/asoc' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'fix/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ASoC: Fix CODEC DAI names for Goni
  ASoC: Fix CODEC name in Goni
  davinci-mcasp: fix _CBM_CFS pin directions
  davinci-mcasp: fix _CBM_CFS hw_params
  davinci-mcasp: use bitfield definitions for PDIR
  ASoC: davinci-mcasp: correct tdm_slots limit

8 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Mon, 9 May 2011 16:09:04 +0000]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms: add pci id to acer travelmate quirk for 5730
  drm/radeon: fix order of doing things in radeon_crtc_cursor_set
  drm: mm: fix debug output
  drm/radeon/kms: ATPX switcheroo fixes
  drm/nouveau: Fix a crash at card takedown for NV40 and older cards

8 years agoMerge branch 'hpfs'
Linus Torvalds [Mon, 9 May 2011 16:07:55 +0000]
Merge branch 'hpfs'

* hpfs:
  HPFS: Remove unused variable
  HPFS: Move declaration up, so that there are no out-of-scope pointers
  HPFS: Fix some unaligned accesses
  HPFS: Fix endianity. Make hpfs work on big-endian machines
  HPFS: Implement fsync for hpfs
  HPFS: Fix a bug that filesystem was not marked dirty when remounting it
  HPFS: Restrict uid and gid to 16-bit values
  HPFS: When marking or clearing the dirty bit, sync the filesystem
  HPFS: Use types with defined width
  HPFS: Remove mark_inode_dirty
  HPFS: Remove CR/LF conversion option
  HPFS: Remove remaining locks
  HPFS: Introduce a global mutex and lock it on every callback from VFS.
  HPFS: Make HPFS compile on preempt and SMP

8 years agoHPFS: Remove unused variable
Mikulas Patocka [Sun, 8 May 2011 18:44:46 +0000]
HPFS: Remove unused variable

Remove unused variable

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Move declaration up, so that there are no out-of-scope pointers
Mikulas Patocka [Sun, 8 May 2011 18:44:38 +0000]
HPFS: Move declaration up, so that there are no out-of-scope pointers

Move declaration up, so that there are no out-of-scope pointers

Reported-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Fix some unaligned accesses
Mikulas Patocka [Sun, 8 May 2011 18:44:32 +0000]
HPFS: Fix some unaligned accesses

Fix some unaligned accesses

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Fix endianity. Make hpfs work on big-endian machines
Mikulas Patocka [Sun, 8 May 2011 18:44:26 +0000]
HPFS: Fix endianity. Make hpfs work on big-endian machines

Fix endianity. Make hpfs work on big-endian machines.

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Implement fsync for hpfs
Mikulas Patocka [Sun, 8 May 2011 18:44:19 +0000]
HPFS: Implement fsync for hpfs

Implement fsync for hpfs.

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Fix a bug that filesystem was not marked dirty when remounting it
Mikulas Patocka [Sun, 8 May 2011 18:44:08 +0000]
HPFS: Fix a bug that filesystem was not marked dirty when remounting it

Fix a bug that filesystem was not marked dirty when remounting it

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Restrict uid and gid to 16-bit values
Mikulas Patocka [Sun, 8 May 2011 18:44:00 +0000]
HPFS: Restrict uid and gid to 16-bit values

Restrict uid and gid to 16-bit values.

HPFS stores only 2 bytes in the EAs.

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: When marking or clearing the dirty bit, sync the filesystem
Mikulas Patocka [Sun, 8 May 2011 18:43:41 +0000]
HPFS: When marking or clearing the dirty bit, sync the filesystem

When marking or clearing the dirty bit, sync the filesystem

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Use types with defined width
Mikulas Patocka [Sun, 8 May 2011 18:43:34 +0000]
HPFS: Use types with defined width

Use types with defined width

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Remove mark_inode_dirty
Mikulas Patocka [Sun, 8 May 2011 18:43:27 +0000]
HPFS: Remove mark_inode_dirty

Remove mark_inode_dirty

HPFS doesn't use kernel's dirty inode indicator anyway because
writing an inode requires directory's mutex.

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Remove CR/LF conversion option
Mikulas Patocka [Sun, 8 May 2011 18:43:19 +0000]
HPFS: Remove CR/LF conversion option

Remove CR/LF conversion option

It is unused anyway. It was used on 2.2 kernels or so.

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Remove remaining locks
Mikulas Patocka [Sun, 8 May 2011 18:43:06 +0000]
HPFS: Remove remaining locks

Remove remaining locks

Because of a new global per-fs lock, no other locks are needed

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Introduce a global mutex and lock it on every callback from VFS.
Mikulas Patocka [Sun, 8 May 2011 18:42:54 +0000]
HPFS: Introduce a global mutex and lock it on every callback from VFS.

Introduce a global mutex and lock it on every callback from VFS.

Performance doesn't matter, reviewing the whole code for locking correctness
would be too complicated, so simply lock it all.

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoHPFS: Make HPFS compile on preempt and SMP
Mikulas Patocka [Sun, 8 May 2011 18:42:44 +0000]
HPFS: Make HPFS compile on preempt and SMP

Make HPFS compile on preempt and SMP

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoeeepc-laptop: Use ACPI handle to identify rfkill port
Matthew Garrett [Mon, 9 May 2011 14:44:01 +0000]
eeepc-laptop: Use ACPI handle to identify rfkill port

The ACPI notification we get from rfkill events on these machines gives
us all the information we need to identify the port that's changed. Do
so rather than assuming that it's always bus 1.

Signed-off-by: Matthew Garrett <mjg@redhat.com>

8 years ago[PATCH] sony-laptop: limit brightness range to DSDT provided ones
Mattia Dongili [Mon, 9 May 2011 14:20:29 +0000]
[PATCH] sony-laptop: limit brightness range to DSDT provided ones

The new style brightness control provides an operating range of 9 values
(seems consistent over a large number of models sharing the same
brightness control methods).
Read and use the minimum and maximum values to limit the backlight
interface between those boundaries.

Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

8 years agosony-laptop: report failures on setting LCD brightness
Mattia Dongili [Tue, 5 Apr 2011 14:38:36 +0000]
sony-laptop: report failures on setting LCD brightness

Check if we were successful in setting the requested brightness and
report failure in that case.

Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

8 years agothinkpad-acpi: module autoloading for newer Lenovo ThinkPads.
Manoj Iyer [Sun, 8 May 2011 22:04:29 +0000]
thinkpad-acpi: module autoloading for newer Lenovo ThinkPads.

The newer Lenovo ThinkPads have HKEY HID of LEN0068 instead
of IBM0068. Added new HID so that thinkpad_acpi module will
auto load on these newer Lenovo ThinkPads.

Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: stable@kernel.org
Signed-off-by: Manoj Iyer <manoj.iyer@canonical.com>
Signed-off-by: Andy Lutomirski <luto@mit.edu>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

8 years agodrm/radeon/kms: add pci id to acer travelmate quirk for 5730
Alex Deucher [Wed, 4 May 2011 15:41:47 +0000]
drm/radeon/kms: add pci id to acer travelmate quirk for 5730

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=34082

Reported by: Sampo Laaksonen <zhamahn@gmail.com>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agodrm/radeon: fix order of doing things in radeon_crtc_cursor_set
Ilija Hadzic [Thu, 5 May 2011 00:15:03 +0000]
drm/radeon: fix order of doing things in radeon_crtc_cursor_set

 if object pin or object lookup in radeon_cursor_set fail, the function
 could leave inconsistent mouse width and hight values in radeon_crtc
 fixed by moving cursor width and height assignments after all
 checks have passed

Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agodrm: mm: fix debug output
Daniel Vetter [Fri, 6 May 2011 21:47:53 +0000]
drm: mm: fix debug output

The looping helper didn't do anything due to a superficial
semicolon. Furthermore one of the two dump functions suffered
from copy&paste fail.

While staring at the code I've also noticed that the replace
helper (currently unused) is a bit broken.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agoMerge remote branch 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next into...
Dave Airlie [Sun, 8 May 2011 23:14:38 +0000]
Merge remote branch 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next into drm-fixes

* 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next:
  drm/nouveau: Fix a crash at card takedown for NV40 and older cards

8 years agodrm/radeon/kms: ATPX switcheroo fixes
Alex Deucher [Fri, 6 May 2011 05:42:49 +0000]
drm/radeon/kms: ATPX switcheroo fixes

When we switch the display mux, also switch
the i2c mux.  Also use the start and finish
methods to let the sbios know that the switch
is happening.

Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=35398

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agodrm/nouveau: Fix a crash at card takedown for NV40 and older cards
Jimmy Rentz [Sun, 17 Apr 2011 20:15:09 +0000]
drm/nouveau: Fix a crash at card takedown for NV40 and older cards

NV40 and older cards (pre NV50) reserve a vram bo for the vga memory at
card init. This bo is then freed at card shutdown.  The problem is that
the ttm bo vram manager was already freed. So a crash occurs when the
vga bo is freed. The fix is to free the vga bo prior to freeing the ttm
bo vram manager. There might be other solutions but this seemed the
simplest to me.

Signed-off-by: Jimmy Rentz <jb17bsome@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

8 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 7 May 2011 20:17:37 +0000]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf tools: Makefile: Use gcc to determine ARCH
  perf events, x86: Fix Intel Nehalem and Westmere last level cache event definitions
  hw_breakpoints, powerpc: Fix CONFIG_HAVE_HW_BREAKPOINT off-case in ptrace_set_debugreg()
  sh, hw_breakpoints: Fix racy access to ptrace breakpoints
  arm, hw_breakpoints: Fix racy access to ptrace breakpoints
  powerpc, hw_breakpoints: Fix racy access to ptrace breakpoints
  x86, hw_breakpoints: Fix racy access to ptrace breakpoints
  ptrace: Prepare to fix racy accesses on task breakpoints

8 years agoperf tools: Makefile: Use gcc to determine ARCH
Lin Ming [Sat, 7 May 2011 04:41:14 +0000]
perf tools: Makefile: Use gcc to determine ARCH

The original Makefile uses "uname -m" to determine ARCH.
This causes problem on x86 when compile perf tool on 32 bit
userspace with a 64 bit kernel.

 bench/../../../arch/x86/lib/memcpy_64.S: Assembler messages:
 bench/../../../arch/x86/lib/memcpy_64.S:28: Error: bad register name `%rdi'

This is because "uname -m" returns x86_64 and memcpy_64.S is
included in 32 bit build.

Reported-by: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Link: http://lkml.kernel.org/r/1304743274.3132.17.camel@localhost
Signed-off-by: Ingo Molnar <mingo@elte.hu>

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Fri, 6 May 2011 22:32:41 +0000]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: handle errors from coalesce_t2
  cifs: refactor mid finding loop in cifs_demultiplex_thread
  cifs: sanitize length checking in coalesce_t2 (try #3)
  cifs: check for bytes_remaining going to zero in CIFS_SessSetup
  cifs: change bleft in decode_unicode_ssetup back to signed type

8 years agoRegression: partial revert "tracing: Remove lock_depth from event entry"
Arjan van de Ven [Fri, 6 May 2011 03:55:18 +0000]
Regression: partial revert "tracing: Remove lock_depth from event entry"

This partially reverts commit e6e1e2593592a8f6f6380496655d8c6f67431266.

That commit changed the structure layout of the trace structure, which
in turn broke PowerTOP (1.9x generation) quite badly.

I appreciate not wanting to expose the variable in question, and
PowerTOP was not using it, so I've replaced the variable with just a
padding field - that way if in the future a new field is needed it can
just use this padding field.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
Linus Torvalds [Fri, 6 May 2011 17:01:54 +0000]
Merge git://git./linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] fix oops in scsi_run_queue()

8 years agoValidate size of EFI GUID partition entries.
Timo Warns [Fri, 6 May 2011 11:47:35 +0000]
Validate size of EFI GUID partition entries.

Otherwise corrupted EFI partition tables can cause total confusion.

Signed-off-by: Timo Warns <warns@pre-sense.de>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoperf events, x86: Fix Intel Nehalem and Westmere last level cache event definitions
Peter Zijlstra [Fri, 22 Apr 2011 22:57:42 +0000]
perf events, x86: Fix Intel Nehalem and Westmere last level cache event definitions

The Intel Nehalem offcore bits implemented in:

  e994d7d23a0b: perf: Fix LLC-* events on Intel Nehalem/Westmere

... are wrong: they implemented _ACCESS as _HIT and counted OTHER_CORE_HIT* as
MISS even though its clearly documented as an L3 hit ...

Fix them and the Westmere definitions as well.

Cc: Andi Kleen <ak@linux.intel.com>
Cc: Lin Ming <ming.m.lin@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1299119690-13991-3-git-send-email-ming.m.lin@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

8 years agohw_breakpoints, powerpc: Fix CONFIG_HAVE_HW_BREAKPOINT off-case in ptrace_set_debugreg()
Frederic Weisbecker [Thu, 5 May 2011 23:53:18 +0000]
hw_breakpoints, powerpc: Fix CONFIG_HAVE_HW_BREAKPOINT off-case in ptrace_set_debugreg()

We make use of ptrace_get_breakpoints() / ptrace_put_breakpoints() to
protect ptrace_set_debugreg() even if CONFIG_HAVE_HW_BREAKPOINT if off.
However in this case, these APIs are not implemented.

To fix this, push the protection down inside the relevant ifdef.
Best would be to export the code inside
CONFIG_HAVE_HW_BREAKPOINT into a standalone function to cleanup
the ifdefury there and call the breakpoint ref API inside. But
as it is more invasive, this should be rather made in an -rc1.

Fixes this build error:

  arch/powerpc/kernel/ptrace.c:1594: error: implicit declaration of function 'ptrace_get_breakpoints' make[2]: ***

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: LPPC <linuxppc-dev@lists.ozlabs.org>
Cc: Prasad <prasad@linux.vnet.ibm.com>
Cc: v2.6.33.. <stable@kernel.org>
Link: http://lkml.kernel.org/r/1304639598-4707-1-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

8 years agoMerge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/torvalds...
Ingo Molnar [Fri, 6 May 2011 06:11:28 +0000]
Merge branch 'master' of ssh:///linux/kernel/git/torvalds/linux-2.6 into perf/urgent

8 years agoMerge branch 'for-linus' of git://github.com/at91linux/linux-2.6-at91
Linus Torvalds [Fri, 6 May 2011 04:27:57 +0000]
Merge branch 'for-linus' of git://github.com/at91linux/linux-2.6-at91

* 'for-linus' of git://github.com/at91linux/linux-2.6-at91:
  at91: Add ARCH_ID and basic cpu macros definition for 5series chips family.
  arm: at91: fix compiler warning for eb01 board build
  arm: at91: minimal defconfig for at91x40 SoC
  ARM: at91: AT91CAP9 has a macb device

8 years agoVM: skip the stack guard page lookup in get_user_pages only for mlock
Linus Torvalds [Thu, 5 May 2011 04:30:28 +0000]
VM: skip the stack guard page lookup in get_user_pages only for mlock

The logic in __get_user_pages() used to skip the stack guard page lookup
whenever the caller wasn't interested in seeing what the actual page
was.  But Michel Lespinasse points out that there are cases where we
don't care about the physical page itself (so 'pages' may be NULL), but
do want to make sure a page is mapped into the virtual address space.

So using the existence of the "pages" array as an indication of whether
to look up the guard page or not isn't actually so great, and we really
should just use the FOLL_MLOCK bit.  But because that bit was only set
for the VM_LOCKED case (and not all vma's necessarily have it, even for
mlock()), we couldn't do that originally.

Fix that by moving the VM_LOCKED check deeper into the call-chain, which
actually simplifies many things.  Now mlock() gets simpler, and we can
also check for FOLL_MLOCK in __get_user_pages() and the code ends up
much more straightforward.

Reported-and-reviewed-by: Michel Lespinasse <walken@google.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoMerge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Wed, 4 May 2011 21:23:41 +0000]
Merge branch 'staging-linus' of git://git./linux/kernel/git/gregkh/staging-2.6

* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
  staging: Remove a warning for drivers/staging/wlan-ng/cfg80211.c
  staging: intel_sst: intelmid needs delay.h
  staging: solo6x10: add select SND_PCM to fix build error
  staging: usbip: vhci: fix oops on subsequent attach
  staging: ft1000: Remove unnecessary EXPORT_SYMBOLs
  staging: rts_pstor: use #ifdef instead of #if
  staging: rts_pstor: Add <linux/vmalloc.h>
  staging: gma500: Depend on X86
  staging: olpc: Add <linux/delay.h>

8 years agoMerge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Wed, 4 May 2011 21:22:53 +0000]
Merge branch 'usb-linus' of git://git./linux/kernel/git/gregkh/usb-2.6

* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  xHCI: Clear PLC in xhci_bus_resume()
  USB: fix regression in usbip by setting has_tt flag
  usb/isp1760: Report correct urb status after unlink
  omap:usb: add regulator support for EHCI
  mfd: Fix usbhs_enable error handling
  usb: musb: gadget: Fix out-of-sync runtime pm calls
  usb: musb: omap2430: Fix retention idle on musb peripheral only boards

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Wed, 4 May 2011 21:22:20 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: do not call __mark_dirty_inode under i_lock
  libceph: fix ceph_osdc_alloc_request error checks
  ceph: handle ceph_osdc_new_request failure in ceph_writepages_start
  libceph: fix ceph_msg_new error path
  ceph: use ihold() when i_lock is held

8 years agoMerge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Wed, 4 May 2011 21:22:04 +0000]
Merge branch 'v4l_for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
  [media] ngene: Fix CI data transfer regression Fix CI data transfer regression introduced by previous cleanup.
  [media] v4l: make sure drivers supply a zeroed struct v4l2_subdev
  [media] Missing frontend config for LME DM04/QQBOX
  [media] rc_core: avoid kernel oops when rmmod saa7134
  [media] imon: add conditional locking in change_protocol
  [media] rc: show RC_TYPE_OTHER in sysfs
  [media] ite-cir: modular build on ppc requires delay.h include
  [media] mceusb: add Dell transceiver ID

8 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1...
Linus Torvalds [Wed, 4 May 2011 21:21:39 +0000]
Merge branch 'fixes' of git://git./linux/kernel/git/ieee1394/linux1394-2.6

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: Fix for broken configrom updates in quick succession

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Wed, 4 May 2011 21:21:08 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  flex_arrays: allow zero length flex arrays
  flex_array: flex_array_prealloc takes a number of elements, not an end
  SELinux: pass last path component in may_create

8 years agoslub: Fix the lockless code on 32-bit platforms with no 64-bit cmpxchg
Thomas Gleixner [Wed, 4 May 2011 13:38:19 +0000]
slub: Fix the lockless code on 32-bit platforms with no 64-bit cmpxchg

The SLUB allocator use of the cmpxchg_double logic was wrong: it
actually needs the irq-safe one.

That happens automatically when we use the native unlocked 'cmpxchg8b'
instruction, but when compiling the kernel for older x86 CPUs that do
not support that instruction, we fall back to the generic emulation
code.

And if you don't specify that you want the irq-safe version, the generic
code ends up just open-coding the cmpxchg8b equivalent without any
protection against interrupts or preemption.  Which definitely doesn't
work for SLUB.

This was reported by Werner Landgraf <w.landgraf@ru.ru>, who saw
instability with his distro-kernel that was compiled to support pretty
much everything under the sun.  Most big Linux distributions tend to
compile for PPro and later, and would never have noticed this problem.

This also fixes the prototypes for the irqsafe cmpxchg_double functions
to use 'bool' like they should.

[ Btw, that whole "generic code defaults to no protection" design just
  sounds stupid - if the code needs no protection, there is no reason to
  use "cmpxchg_double" to begin with.  So we should probably just remove
  the unprotected version entirely as pointless.   - Linus ]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reported-and-tested-by: werner <w.landgraf@ru.ru>
Acked-and-tested-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1105041539050.3005@ionos
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoceph: do not call __mark_dirty_inode under i_lock
Sage Weil [Wed, 4 May 2011 18:33:47 +0000]
ceph: do not call __mark_dirty_inode under i_lock

The __mark_dirty_inode helper now takes i_lock as of 250df6ed.  Fix the
one ceph callers that held i_lock (__ceph_mark_dirty_caps) to return the
flags value so that the callers can do it outside of i_lock.

Signed-off-by: Sage Weil <sage@newdream.net>

8 years agodrm/i915/dp: Be paranoid in case we disable a DP before it is attached
Chris Wilson [Sun, 17 Apr 2011 05:38:35 +0000]
drm/i915/dp: Be paranoid in case we disable a DP before it is attached

Given that the hardware may be left in a random condition by the BIOS,
it is conceivable that we then attempt to clear the DP_PIPEB_SELECT bit
without us ever enabling/attaching the DP encoder to a pipe. Thus
causing a NULL deference when we attempt to wait for a vblank on that
crtc.

Reported-and-tested-by: Bryan Christ <bryan.christ@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=36314
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=36456
Reported-and-tested-by: Bo Wang <bo.b.wang@intel.com>
Cc: stable@kernel.org
Signed-off-by: Keith Packard <keithp@keithp.com>

8 years agodrm/i915: Release object along create user fb error path
Chris Wilson [Sat, 16 Apr 2011 09:23:51 +0000]
drm/i915: Release object along create user fb error path

Reported-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Keith Packard <keithp@keithp.com>

8 years agoMerge branch 'perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic...
Ingo Molnar [Wed, 4 May 2011 18:33:42 +0000]
Merge branch 'perf/urgent' of git://git./linux/kernel/git/frederic/random-tracing into perf/urgent

8 years agoLinux 2.6.39-rc6
Linus Torvalds [Wed, 4 May 2011 02:59:13 +0000]
Linux 2.6.39-rc6

8 years agoMerge branch 'for-linus' of git://git.infradead.org/users/eparis/selinux into for...
James Morris [Wed, 4 May 2011 01:59:34 +0000]
Merge branch 'for-linus' of git://git.infradead.org/users/eparis/selinux into for-linus

8 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Wed, 4 May 2011 01:52:09 +0000]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms: fix gart setup on fusion parts (v2)
  drm: Send pending vblank events before disabling vblank.
  drm/radeon: fix regression on atom cards with hardcoded EDID record.
  drm/radeon/kms: add some new pci ids