Commit graph

321311 commits

Author SHA1 Message Date
Christoph Lameter
db265eca77 mm/sl[aou]b: Move duping of slab name to slab_common.c
Duping of the slabname has to be done by each slab. Moving this code to
slab_common avoids duplicate implementations.

With this patch we have common string handling for all slab allocators.
Strings passed to kmem_cache_create() are copied internally. Subsystems
can create temporary strings to create slab caches.

Slabs allocated in early states of bootstrap will never be freed (and
those can never be freed since they are essential to slab allocator
operations).  During bootstrap we therefore do not have to worry about
duping names.

Reviewed-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-09-05 12:00:36 +03:00
Christoph Lameter
12c3667fb7 mm/sl[aou]b: Get rid of __kmem_cache_destroy
What is done there can be done in __kmem_cache_shutdown.

This affects RCU handling somewhat. On rcu free all slab allocators do
not refer to other management structures than the kmem_cache structure.
Therefore these other structures can be freed before the rcu deferred
free to the page allocator occurs.

Reviewed-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-09-05 12:00:36 +03:00
Christoph Lameter
8f4c765c22 mm/sl[aou]b: Move freeing of kmem_cache structure to common code
The freeing action is basically the same in all slab allocators.
Move to the common kmem_cache_destroy() function.

Reviewed-by: Glauber Costa <glommer@parallels.com>
Reviewed-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-09-05 12:00:36 +03:00
Christoph Lameter
9b030cb865 mm/sl[aou]b: Use "kmem_cache" name for slab cache with kmem_cache struct
Make all allocators use the "kmem_cache" slabname for the "kmem_cache"
structure.

Reviewed-by: Glauber Costa <glommer@parallels.com>
Reviewed-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-09-05 12:00:36 +03:00
Christoph Lameter
945cf2b619 mm/sl[aou]b: Extract a common function for kmem_cache_destroy
kmem_cache_destroy does basically the same in all allocators.

Extract common code which is easy since we already have common mutex
handling.

Reviewed-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-09-05 12:00:35 +03:00
Christoph Lameter
7c9adf5a54 mm/sl[aou]b: Move list_add() to slab_common.c
Move the code to append the new kmem_cache to the list of slab caches to
the kmem_cache_create code in the shared code.

This is possible now since the acquisition of the mutex was moved into
kmem_cache_create().

Acked-by: David Rientjes <rientjes@google.com>
Reviewed-by: Glauber Costa <glommer@parallels.com>
Reviewed-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-09-05 12:00:35 +03:00
Christoph Lameter
686d550d22 mm/slab_common: Improve error handling in kmem_cache_create
Instead of using s == NULL use an errorcode. This allows much more
detailed diagnostics as to what went wrong. As we add more functionality
from the slab allocators to the common kmem_cache_create() function we will
also add more error conditions.

Print the error code during the panic as well as in a warning if the module
can handle failure. The API for kmem_cache_create() currently does not allow
the returning of an error code. Return NULL but log the cause of the problem
in the syslog.

Reviewed-by: Glauber Costa <glommer@parallels.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-09-05 12:00:35 +03:00
Christoph Lameter
208c4358dc mm/slub: Use kmem_cache for the kmem_cache structure
Do not use kmalloc() but kmem_cache_alloc() for the allocation
of the kmem_cache structures in slub.

Reviewed-by: Glauber Costa <glommer@parallels.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-09-05 12:00:35 +03:00
Christoph Lameter
79576102af mm/slub: Add debugging to verify correct cache use on kmem_cache_free()
Add additional debugging to check that the objects is actually from the cache
the caller claims. Doing so currently trips up some other debugging code. It
takes a lot to infer from that what was happening.

Reviewed-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
[ penberg@kernel.org: Use pr_err() ]
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-09-05 12:00:35 +03:00
Ezequiel Garcia
e21827aadd mm: Use __do_krealloc to do the krealloc job
Without this patch we can get (many) kmem trace events
with call site at krealloc().

This happens because krealloc is calling __krealloc,
which performs the allocation through kmalloc_track_caller.

Since neither krealloc nor __krealloc are marked inline explicitly,
the caller can be traced as being krealloc, which clearly is not
the intended behavior.

This patch allows to get the real caller of krealloc, by creating
an always inlined function __do_krealloc, thus tracing the
call site accurately.

Acked-by: Christoph Lameter <cl@linux.com>
Cc: Glauber Costa <glommer@parallels.com>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-09-04 10:22:58 +03:00
David Rientjes
5b74beb425 mm, slab: remove page_get_cache
page_get_cache() isn't called from anything, so remove it.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-08-17 15:35:44 +03:00
David Rientjes
c0931ef1f3 mm, slab: remove dflags
cachep->dflags is never referenced, so remove it.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-08-17 14:32:02 +03:00
Shuah Khan
77be4b1366 mm/slab: restructure kmem_cache_create() debug checks
kmem_cache_create() does cache integrity checks when CONFIG_DEBUG_VM is
defined.  These checks interspersed with the regular code path has lead
to compile time warnings when compiled without CONFIG_DEBUG_VM defined.
Restructuring the code to move the integrity checks in to a new function
would eliminate the current compile warning problem and also will allow
for future changes to the debug only code to evolve without introducing
new warnings in the regular path.

This restructuring work is based on the discussion in the following
thread:

https://lkml.org/lkml/2012/7/13/424

[akpm@linux-foundation.org: fix build, cleanup]
Signed-off-by: Shuah Khan <shuah.khan@hp.com>
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-08-16 10:14:18 +03:00
Pekka Enberg
b920536aa0 Revert "mm/slab_common.c: cleanup"
This reverts commit 455ce9eb1c. Andrew
sent a better version.

Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-08-16 10:12:18 +03:00
Joonsoo Kim
e24fc410f5 slub: reduce failure of this_cpu_cmpxchg in put_cpu_partial() after unfreezing
In current implementation, after unfreezing, we doesn't touch oldpage,
so it remain 'NOT NULL'. When we call this_cpu_cmpxchg()
with this old oldpage, this_cpu_cmpxchg() is mostly be failed.

We can change value of oldpage to NULL after unfreezing,
because unfreeze_partial() ensure that all the cpu partial slabs is removed
from cpu partial list. In this time, we could expect that
this_cpu_cmpxchg is mostly succeed.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-08-16 10:06:42 +03:00
Christoph Lameter
19c7ff9ecd slub: Take node lock during object free checks
Only applies to scenarios where debugging is on:

Validation of slabs can currently occur while debugging
information is updated from the fast paths of the allocator.
This results in various races where we get false reports about
slab metadata not being in order.

This patch makes the fast paths take the node lock so that
serialization with slab validation will occur. Causes additional
slowdown in debug scenarios.

Reported-by: Waiman Long <Waiman.Long@hp.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-08-16 09:45:04 +03:00
Andrew Morton
455ce9eb1c mm/slab_common.c: cleanup
Eliminate an ifdef and a label by moving all the CONFIG_DEBUG_VM checking
inside the locked region.

Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-08-16 09:36:05 +03:00
Michel Lespinasse
48f2474144 slab: do not call compound_head() in page_get_cache()
page_get_cache() does not need to call compound_head(), as its unique
caller virt_to_slab() already makes sure to return a head page.

Additionally, removing the compound_head() call makes page_get_cache()
consistent with page_get_slab().

Signed-off-by: Michel Lespinasse <walken@google.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@kernel.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-08-16 09:32:19 +03:00
Glauber Costa
d9b7f22623 slub: use free_page instead of put_page for freeing kmalloc allocation
When freeing objects, the slub allocator will most of the time free
empty pages by calling __free_pages(). But high-order kmalloc will be
diposed by means of put_page() instead. It makes no sense to call
put_page() in kernel pages that are provided by the object allocators,
so we shouldn't be doing this ourselves. Aside from the consistency
change, we don't change the flow too much. put_page()'s would call its
dtor function, which is __free_pages. We also already do all of the
Compound page tests ourselves, and the Mlock test we lose don't really
matter.

Signed-off-by: Glauber Costa <glommer@parallels.com>
Acked-by: Christoph Lameter <cl@linux.com>
CC: David Rientjes <rientjes@google.com>
CC: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2012-08-16 09:25:03 +03:00
Linus Torvalds
0d7614f09c Linux 3.6-rc1 2012-08-02 16:38:10 -07:00
Linus Torvalds
fc6bdb59a5 Merge branch 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc
Pull OLPC platform updates from Andres Salomon:
 "These move the OLPC Embedded Controller driver out of
  arch/x86/platform and into drivers/platform/olpc.

  OLPC machines are now ARM-based (which means lots of x86 and ARM
  changes), but are typically pretty self-contained..  so it makes more
  sense to go through a separate OLPC tree after getting the appropriate
  review/ACKs."

* 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc:
  x86: OLPC: move s/r-related EC cmds to EC driver
  Platform: OLPC: move global variables into priv struct
  Platform: OLPC: move debugfs support from x86 EC driver
  x86: OLPC: switch over to using new EC driver on x86
  Platform: OLPC: add a suspended flag to the EC driver
  Platform: OLPC: turn EC driver into a platform_driver
  Platform: OLPC: allow EC cmd to be overridden, and create a workqueue to call it
  drivers: OLPC: update various drivers to include olpc-ec.h
  Platform: OLPC: add a stub to drivers/platform/ for the OLPC EC driver
2012-08-02 11:52:39 -07:00
Linus Torvalds
44d82e2963 ARM: arm-soc Marvell Orion device-tree updates
This branch contains a set of device-tree conversions for Marvell Orion
 platforms that were staged early but took a few tries to get the branch
 into a format where it was suitable for us to pick up.
 
 Given that most people working on these platforms are hobbyists with
 limited time, we were a bit more flexible with merging it even though
 it came in late.
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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc Marvell Orion device-tree updates from Olof Johansson:
 "This contains a set of device-tree conversions for Marvell Orion
  platforms that were staged early but took a few tries to get the
  branch into a format where it was suitable for us to pick up.

  Given that most people working on these platforms are hobbyists with
  limited time, we were a bit more flexible with merging it even though
  it came in late."

* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits)
  ARM: Kirkwood: Replace mrvl with marvell
  ARM: Kirkwood: Describe GoFlex Net LEDs and SATA in DT.
  ARM: Kirkwood: Describe Dreamplug LEDs in DT.
  ARM: Kirkwood: Describe iConnects LEDs in DT.
  ARM: Kirkwood: Describe iConnects temperature sensor in DT.
  ARM: Kirkwood: Describe IB62x0 LEDs in DT.
  ARM: Kirkwood: Describe IB62x0 gpio-keys in DT.
  ARM: Kirkwood: Describe DNS32? gpio-keys in DT.
  ARM: Kirkwood: Move common portions into a kirkwood-dnskw.dtsi
  ARM: Kirkwood: Replace DNS-320/DNS-325 leds with dt bindings
  ARM: Kirkwood: Describe DNS325 temperature sensor in DT.
  ARM: Kirkwood: Use DT to configure SATA device.
  ARM: kirkwood: use devicetree for SPI on dreamplug
  ARM: kirkwood: Add LS-XHL and LS-CHLv2 support
  ARM: Kirkwood: Initial DTS support for Kirkwood GoFlex Net
  ARM: Kirkwood: Add basic device tree support for QNAP TS219.
  ATA: sata_mv: Add device tree support
  ARM: Orion: DTify the watchdog timer.
  ARM: Orion: Add arch support needed for I2C via DT.
  ARM: kirkwood: use devicetree for orion-spi
  ...

Conflicts:
	drivers/watchdog/orion_wdt.c
2012-08-02 11:50:24 -07:00
Linus Torvalds
bfdf85dfce ARM: arm-soc: cpuidle enablement for OMAP
Coupled cpuidle was meant to merge for 3.5 through Len Brown's tree, but
 didn't go in because the pull request ended up rejected. So it just got
 merged, and we got this staged branch that enables the coupled cpuidle
 code on OMAP.
 
 With a stable git workflow from the other maintainer we could have staged
 this earlier, but that wasn't the case so we have had to merge it late.
 
 The alternative is to hold it off until 3.7 but given that the code is
 well-isolated to OMAP and they are eager to see it go in, I didn't push
 back hard in that direction.
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Merge tag 'pm2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc cpuidle enablement for OMAP from Olof Johansson:
 "Coupled cpuidle was meant to merge for 3.5 through Len Brown's tree,
  but didn't go in because the pull request ended up rejected.  So it
  just got merged, and we got this staged branch that enables the
  coupled cpuidle code on OMAP.

  With a stable git workflow from the other maintainer we could have
  staged this earlier, but that wasn't the case so we have had to merge
  it late.

  The alternative is to hold it off until 3.7 but given that the code is
  well-isolated to OMAP and they are eager to see it go in, I didn't
  push back hard in that direction."

* tag 'pm2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: OMAP4: CPUidle: Open broadcast clock-event device.
  ARM: OMAP4: CPUidle: add synchronization for coupled idle states
  ARM: OMAP4: CPUidle: Use coupled cpuidle states to implement SMP cpuidle.
  ARM: OMAP: timer: allow gp timer clock-event to be used on both cpus
2012-08-02 11:48:54 -07:00
Linus Torvalds
d1494ba8c3 ARM: SoC fixes
A few fixes for merge window fallout, and a bugfix for timer resume
 on PRIMA2.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A few fixes for merge window fallout, and a bugfix for timer resume on
  PRIMA2."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: mmp: add missing irqs.h
  arm: mvebu: fix typo in .dtsi comment for Armada XP SoCs
  ARM: PRIMA2: delete redundant codes to restore LATCHED when timer resumes
  ARM: mxc: Include missing irqs.h header
2012-08-02 11:48:20 -07:00
Linus Torvalds
0a276d1675 SuperH fixes for 3.6-rc1 merge window
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Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh

Pull SuperH fixes from Paul Mundt.

* tag 'sh-for-linus' of git://github.com/pmundt/linux-sh: (24 commits)
  sh: explicitly include sh_dma.h in setup-sh7722.c
  sh: ecovec: care CN5 VBUS if USB host mode
  sh: sh7724: fixup renesas_usbhs clock settings
  sh: intc: initial irqdomain support.
  sh: pfc: Fix up init ordering mess.
  serial: sh-sci: fix compilation breakage, when DMA is enabled
  dmaengine: shdma: restore partial transfer calculation
  sh: modify the sh_dmae_slave_config for RSPI in setup-sh7757
  sh: Fix up recursive fault in oops with unset TTB.
  sh: pfc: Build fix for pinctrl_remove_gpio_range() changes.
  sh: select the fixed regulator driver on several boards
  sh: ecovec: switch MMC power control to regulators
  sh: add fixed voltage regulators to se7724
  sh: add fixed voltage regulators to sdk7786
  sh: add fixed voltage regulators to rsk
  sh: add fixed voltage regulators to migor
  sh: add fixed voltage regulators to kfr2r09
  sh: add fixed voltage regulators to ap325rxa
  sh: add fixed voltage regulators to sh7757lcr
  sh: add fixed voltage regulators to sh2007
  ...
2012-08-02 11:45:42 -07:00
Linus Torvalds
25aa6a7ae4 Additional md update for 3.6
This contains a few patches that depend on
 plugging changes in the block layer so needs to wait
 for those.
 It also contains a Kconfig fix for the new RAID10 support
 in dm-raid.
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Merge tag 'md-3.6' of git://neil.brown.name/md

Pull additional md update from NeilBrown:
 "This contains a few patches that depend on plugging changes in the
  block layer so needed to wait for those.

  It also contains a Kconfig fix for the new RAID10 support in dm-raid."

* tag 'md-3.6' of git://neil.brown.name/md:
  md/dm-raid: DM_RAID should select MD_RAID10
  md/raid1: submit IO from originating thread instead of md thread.
  raid5: raid5d handle stripe in batch way
  raid5: make_request use batch stripe release
2012-08-02 11:34:40 -07:00
Linus Torvalds
c8924234bd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull two ceph fixes from Sage Weil:
 "The first patch fixes up the old crufty open intent code to use the
  atomic_open stuff properly, and the second fixes a possible null deref
  and memory leak with the crypto keys."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  libceph: fix crypto key null deref, memory leak
  ceph: simplify+fix atomic_open
2012-08-02 10:57:31 -07:00
Linus Torvalds
410fc4ce8a - Fixes a bug when the lower filesystem mount options include 'acl', but the
eCryptfs mount options do not
 - Cleanups in the messaging code
 - Better handling of empty files in the lower filesystem to improve usability.
   Failed file creations are now cleaned up and empty lower files are converted
   into eCryptfs during open().
 - The write-through cache changes are being reverted due to bugs that are not
   easy to fix. Stability outweighs the performance enhancements here.
 - Improvement to the mount code to catch unsupported ciphers specified in the
   mount options
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Merge tag 'ecryptfs-3.6-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs

Pull ecryptfs fixes from Tyler Hicks:
 - Fixes a bug when the lower filesystem mount options include 'acl',
   but the eCryptfs mount options do not
 - Cleanups in the messaging code
 - Better handling of empty files in the lower filesystem to improve
   usability.  Failed file creations are now cleaned up and empty lower
   files are converted into eCryptfs during open().
 - The write-through cache changes are being reverted due to bugs that
   are not easy to fix.  Stability outweighs the performance
   enhancements here.
 - Improvement to the mount code to catch unsupported ciphers specified
   in the mount options

* tag 'ecryptfs-3.6-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
  eCryptfs: check for eCryptfs cipher support at mount
  eCryptfs: Revert to a writethrough cache model
  eCryptfs: Initialize empty lower files when opening them
  eCryptfs: Unlink lower inode when ecryptfs_create() fails
  eCryptfs: Make all miscdev functions use daemon ptr in file private_data
  eCryptfs: Remove unused messaging declarations and function
  eCryptfs: Copy up POSIX ACL and read-only flags from lower mount
2012-08-02 10:56:34 -07:00
Linus Torvalds
630103ea2c Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Pull CIFS update from Steve French:
 "Adds SMB2 rmdir/mkdir capability to the SMB2/SMB2.1 support in cifs.

  I am holding up a few more days on merging the remainder of the
  SMB2/SMB2.1 enablement although it is nearing review completion, in
  order to address some review comments from Jeff Layton on a few of the
  subsequent SMB2 patches, and also to debug an unrelated cifs problem
  that Pavel discovered."

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Add SMB2 support for rmdir
  CIFS: Move rmdir code to ops struct
  CIFS: Add SMB2 support for mkdir operation
  CIFS: Separate protocol specific part from mkdir
  CIFS: Simplify cifs_mkdir call
2012-08-02 10:54:11 -07:00
Linus Torvalds
8783b6e2b2 mm: remove node_start_pfn checking in new WARN_ON for now
Borislav Petkov reports that the new warning added in commit
88fdf75d1b ("mm: warn if pg_data_t isn't initialized with zero")
triggers for him, and it is the node_start_pfn field that has already
been initialized once.

The call trace looks like this:

  x86_64_start_kernel ->
    x86_64_start_reservations ->
    start_kernel ->
    setup_arch ->
    paging_init ->
    zone_sizes_init ->
    free_area_init_nodes ->
    free_area_init_node

and (with the warning replaced by debug output), Borislav sees

  On node 0 totalpages: 4193848
    DMA zone: 64 pages used for memmap
    DMA zone: 6 pages reserved
    DMA zone: 3890 pages, LIFO batch:0
    DMA32 zone: 16320 pages used for memmap
    DMA32 zone: 798464 pages, LIFO batch:31
    Normal zone: 52736 pages used for memmap
    Normal zone: 3322368 pages, LIFO batch:31
  free_area_init_node: pgdat->node_start_pfn: 4423680      <----
  On node 1 totalpages: 4194304
    Normal zone: 65536 pages used for memmap
    Normal zone: 4128768 pages, LIFO batch:31
  free_area_init_node: pgdat->node_start_pfn: 8617984      <----
  On node 2 totalpages: 4194304
    Normal zone: 65536 pages used for memmap
    Normal zone: 4128768 pages, LIFO batch:31
  free_area_init_node: pgdat->node_start_pfn: 12812288     <----
  On node 3 totalpages: 4194304
    Normal zone: 65536 pages used for memmap
    Normal zone: 4128768 pages, LIFO batch:31

so remove the bogus warning for now to avoid annoying people.  Minchan
Kim is looking at it.

Reported-by: Borislav Petkov <bp@amd64.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-08-02 10:37:03 -07:00
Haojian Zhuang
bac6f61550 ARM: mmp: add missing irqs.h
arch/arm/mach-mmp/gplugd.c:195:13: error: ‘MMP_NR_IRQS’ undeclared here
(not in a function)
make[1]: *** [arch/arm/mach-mmp/gplugd.o] Error 1

Include <mach/irqs.h> to fix this issue.

Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-08-02 10:15:59 -07:00
Thomas Petazzoni
10b683cba5 arm: mvebu: fix typo in .dtsi comment for Armada XP SoCs
The comment was wrongly referring to Armada 370 while the file is
related to Armada XP.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-08-02 10:05:32 -07:00
Barry Song
debeaf6c2d ARM: PRIMA2: delete redundant codes to restore LATCHED when timer resumes
The only way to write LATCHED registers to write LATCH_BIT to LATCH register,
that will latch COUNTER into LATCHED.e.g.
writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base +
	SIRFSOC_TIMER_LATCH);

Writing values to LATCHED registers directly is useless at all.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-08-02 10:05:27 -07:00
Sylvain Munaut
f0666b1ac8 libceph: fix crypto key null deref, memory leak
Avoid crashing if the crypto key payload was NULL, as when it was not correctly
allocated and initialized.  Also, avoid leaking it.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
2012-08-02 09:19:20 -07:00
Sage Weil
5ef50c3bec ceph: simplify+fix atomic_open
The initial ->atomic_open op was carried over from the old intent code,
which was incomplete and didn't really work.  Replace it with a fresh
method.  In particular:

 * always attempt to do an atomic open+lookup, both for the create case
   and for lookups of existing files.
 * fix symlink handling by returning 1 to the VFS so that we can follow
   the link to its destination. This fixes a longstanding ceph bug (#2392).

Signed-off-by: Sage Weil <sage@inktank.com>
2012-08-02 09:11:19 -07:00
Guennadi Liakhovetski
08298f0612 sh: explicitly include sh_dma.h in setup-sh7722.c
setup-sh7722.c defines several objects, whose types are defined in
sh_dma.h, so, it has to be included explicitly.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-08-02 15:37:26 +09:00
Linus Torvalds
1a9b4993b7 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "The lion share of this pull request are fixes for clk-related breakage
  caused by other changes during this merge window.  For some platforms
  the fix was as simple as selecting HAVE_CLK, for others like the
  Loongson 2 significant restructuring was required.

  The remainder are changes required to get the Lantiq code to work
  again."

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: Loongson 2: Sort out clock managment.
  MIPS: Loongson 1: more clk support and add select HAVE_CLK
  MIPS: txx9: Fix redefinition of clk_* by adding select HAVE_CLK
  MIPS: BCM63xx: Fix redefinition of clk_* by adding select HAVE_CLK
  MIPS: AR7: Fix redefinition of clk_* by adding select HAVE_CLK
  MIPS: Lantiq: Platform specific CLK fixup
  MIPS: Lantiq: Add device_tree_init function
  MIPS: Lantiq: Fix interface clock and PCI control register offset
2012-08-01 16:47:15 -07:00
Linus Torvalds
1871e845e5 Merge branch 'for-linus-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML fixes from Richard Weinberger:
 "This patch set contains mostly fixes and cleanups.  The UML tty driver
  uses now tty_port and is no longer broken like hell  :-)"

* 'for-linus-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: Add arch/x86/um to MAINTAINERS
  um: pass siginfo to guest process
  um: fix ubd_file_size for read-only files
  um: pull interrupt_end() into userspace()
  um: split syscall_trace(), pass pt_regs to it
  um: switch UPT_SET_RETURN_VALUE and regs_return_value to pt_regs
  um: set BLK_CGROUP=y in defconfig
  um: remove count_lock
  um: fully use tty_port
  um: Remove dead code
  um: remove line_ioctl()
  TTY: um/line, use tty from tty_port
  TTY: um/line, add tty_port
2012-08-01 16:45:02 -07:00
Linus Torvalds
a6dc77254b Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM DMA engine updates from Russell King:
 "This looks scary at first glance, but what it is is:
   - a rework of the sa11x0 DMA engine driver merged during the previous
     cycle, to extract a common set of helper functions for DMA engine
     implementations.
   - conversion of amba-pl08x.c to use these helper functions.
   - addition of OMAP DMA engine driver (using these helper functions),
     and conversion of some of the OMAP DMA users to use DMA engine.

  Nothing in the helper functions is ARM specific, so I hope that other
  implementations can consolidate some of their code by making use of
  these helpers.

  This has been sitting in linux-next most of the merge cycle, and has
  been tested by several OMAP folk.  I've tested it on sa11x0 platforms,
  and given it my best shot on my broken platforms which have the
  amba-pl08x controller.

  The last point is the addition to feature-removal-schedule.txt, which
  will have a merge conflict.  Between myself and TI, we're planning to
  remove the old TI DMA implementation next year."

Fix up trivial add/add conflicts in Documentation/feature-removal-schedule.txt
and drivers/dma/{Kconfig,Makefile}

* 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm: (53 commits)
  ARM: 7481/1: OMAP2+: omap2plus_defconfig: enable OMAP DMA engine
  ARM: 7464/1: mmc: omap_hsmmc: ensure probe returns error if DMA channel request fails
  Add feature removal of old OMAP private DMA implementation
  mtd: omap2: remove private DMA API implementation
  mtd: omap2: add DMA engine support
  spi: omap2-mcspi: remove private DMA API implementation
  spi: omap2-mcspi: add DMA engine support
  ARM: omap: remove mmc platform data dma_mask and initialization
  mmc: omap: remove private DMA API implementation
  mmc: omap: add DMA engine support
  mmc: omap_hsmmc: remove private DMA API implementation
  mmc: omap_hsmmc: add DMA engine support
  dmaengine: omap: add support for cyclic DMA
  dmaengine: omap: add support for setting fi
  dmaengine: omap: add support for returning residue in tx_state method
  dmaengine: add OMAP DMA engine driver
  dmaengine: sa11x0-dma: add cyclic DMA support
  dmaengine: sa11x0-dma: fix DMA residue support
  dmaengine: PL08x: ensure all descriptors are freed when channel is released
  dmaengine: PL08x: get rid of write only pool_ctr and free_txd locking
  ...
2012-08-01 16:41:07 -07:00
Linus Torvalds
02a6ec6a24 Merge branch 'audit' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM audit/signal updates from Russell King:
 "ARM audit/signal handling updates from Al and Will.  This improves on
  the work Viro did last merge window, and sorts out some of the issues
  found with that work."

* 'audit' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7475/1: sys_trace: allow all syscall arguments to be updated via ptrace
  ARM: 7474/1: get rid of TIF_SYSCALL_RESTARTSYS
  ARM: 7473/1: deal with handlerless restarts without leaving the kernel
  ARM: 7472/1: pull all work_pending logics into C function
  ARM: 7471/1: Revert "7442/1: Revert "remove unused restart trampoline""
  ARM: 7470/1: Revert "7443/1: Revert "new way of handling ERESTART_RESTARTBLOCK""
2012-08-01 16:35:37 -07:00
Linus Torvalds
9a2533c3eb Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
 "This fixes various issues found during July"

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7479/1: mm: avoid NULL dereference when flushing gate_vma with VIVT caches
  ARM: Fix undefined instruction exception handling
  ARM: 7480/1: only call smp_send_stop() on SMP
  ARM: 7478/1: errata: extend workaround for erratum #720789
  ARM: 7477/1: vfp: Always save VFP state in vfp_pm_suspend on UP
  ARM: 7476/1: vfp: only clear vfp state for current cpu in vfp_pm_suspend
  ARM: 7468/1: ftrace: Trace function entry before updating index
  ARM: 7467/1: mutex: use generic xchg-based implementation for ARMv6+
  ARM: 7466/1: disable interrupt before spinning endlessly
  ARM: 7465/1: Handle >4GB memory sizes in device tree and mem=size@start option
2012-08-01 16:30:45 -07:00
Richard Weinberger
b070989aeb um: Add arch/x86/um to MAINTAINERS
Signed-off-by: Richard Weinberger <richard@nod.at>
2012-08-02 01:00:47 +02:00
Martin Pärtel
d3c1cfcdb4 um: pass siginfo to guest process
UML guest processes now get correct siginfo_t for SIGTRAP, SIGFPE,
SIGILL and SIGBUS. Specifically, si_addr and si_code are now correct
where previously they were si_addr = NULL and si_code = 128.

Signed-off-by: Martin Pärtel <martin.partel@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2012-08-02 00:49:17 +02:00
Martin Pärtel
d4afcba95f um: fix ubd_file_size for read-only files
Made ubd_file_size not request write access. Fixes use of read-only images.

Signed-off-by: Martin Pärtel <martin.partel@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2012-08-02 00:44:49 +02:00
NeilBrown
d9f691c365 md/dm-raid: DM_RAID should select MD_RAID10
Now that DM_RAID supports raid10, it needs to select that code
to ensure it is included.

Cc: Jonathan Brassow <jbrassow@redhat.com>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
2012-08-02 08:35:43 +10:00
NeilBrown
f54a9d0e59 md/raid1: submit IO from originating thread instead of md thread.
queuing writes to the md thread means that all requests go through the
one processor which may not be able to keep up with very high request
rates.

So use the plugging infrastructure to submit all requests on unplug.
If a 'schedule' is needed, we fall back on the old approach of handing
the requests to the thread for it to handle.

Signed-off-by: NeilBrown <neilb@suse.de>
2012-08-02 08:33:20 +10:00
Shaohua Li
46a06401f6 raid5: raid5d handle stripe in batch way
Let raid5d handle stripe in batch way to reduce conf->device_lock locking.

Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: NeilBrown <neilb@suse.de>
2012-08-02 08:33:15 +10:00
Shaohua Li
8811b5968f raid5: make_request use batch stripe release
make_request() does stripe release for every stripe and the stripe usually has
count 1, which makes previous release_stripe() optimization not work. In my
test, this release_stripe() becomes the heaviest pleace to take
conf->device_lock after previous patches applied.

Below patch makes stripe release batch. All the stripes will be released in
unplug. The STRIPE_ON_UNPLUG_LIST bit is to protect concurrent access stripe
lru.

Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: NeilBrown <neilb@suse.de>
2012-08-02 08:33:00 +10:00
Al Viro
b8a4209523 um: pull interrupt_end() into userspace()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
2012-08-02 00:25:44 +02:00
Al Viro
1bfa2317b2 um: split syscall_trace(), pass pt_regs to it
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[richard@nod.at: Fixed some minor build issues]
Signed-off-by: Richard Weinberger <richard@nod.at>
2012-08-02 00:25:38 +02:00