06 Oct, 2010
3 commits
-
…/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 trace scripting: Fix extern struct definitions
perf ui hist browser: Fix segfault on 'a' for annotate
perf tools: Fix build breakage
perf, x86: Handle in flight NMIs on P4 platform
oprofile, ARM: Release resources on failure
oprofile: Add Support for Intel CPU Family 6 / Model 29 -
The "flags" member of "struct wait_queue_t" is used in several places in
the kernel code without beeing initialized by init_wait(). "flags" is
used in bitwise operations.If "flags" not initialized then unexpected behaviour may take place.
Incorrect flags might used later in code.Added initialization of "wait_queue_t.flags" with zero value into
"init_wait".Signed-off-by: Evgeny Kuznetsov
[ The bit we care about does end up being initialized by both
prepare_to_wait() and add_to_wait_queue(), so this doesn't seem to
cause actual bugs, but is definitely the right thing to do -Linus ]
Signed-off-by: Linus Torvalds -
With all the recent module loading cleanups, we've minimized the code
that sits under module_mutex, fixing various deadlocks and making it
possible to do most of the module loading in parallel.However, that whole conversion totally missed the rather obscure code
that adds a new module to the list for BUG() handling. That code was
doubly obscure because (a) the code itself lives in lib/bugs.c (for
dubious reasons) and (b) it gets called from the architecture-specific
"module_finalize()" rather than from generic code.Calling it from arch-specific code makes no sense what-so-ever to begin
with, and is now actively wrong since that code isn't protected by the
module loading lock any more.So this commit moves the "module_bug_{finalize,cleanup}()" calls away
from the arch-specific code, and into the generic code - and in the
process protects it with the module_mutex so that the list operations
are now safe.Future fixups:
- move the module list handling code into kernel/module.c where it
belongs.
- get rid of 'module_bug_list' and just use the regular list of modules
(called 'modules' - imagine that) that we already create and maintain
for other reasons.Reported-and-tested-by: Thomas Gleixner
Cc: Rusty Russell
Cc: Adrian Bunk
Cc: Andrew Morton
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds
05 Oct, 2010
10 commits
-
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
regulator: max8649 - fix setting extclk_freq
regulator: fix typo in current units
regulator: fix device_register() error handling -
* 'merge-powerpc' of git://git.secretlab.ca/git/linux-2.6:
powerpc/5200: tighten up ac97 reset timing
powerpc/5200: efika.c: Add of_node_put to avoid memory leak
powerpc/512x: fix clk_get() return value -
* 'fix/misc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: i2c/other/ak4xx-adda: Fix a compile warning with CONFIG_PROCFS=n
ALSA: prevent heap corruption in snd_ctl_new() -
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
hwmon: f71882fg: use a muxed resource lock for the Super I/O port -
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] Fix memory leaks in pcc_cpufreq_do_osc
[CPUFREQ] acpi-cpufreq: add missing __percpu markup -
* 'merge-spi' of git://git.secretlab.ca/git/linux-2.6:
of/spi: Fix OF-style driver binding of spi devices
spi: spi-gpio.c tests SPI_MASTER_NO_RX bit twice, but not SPI_MASTER_NO_TX
spi/mpc8xxx: fix buffer overrun on large transfers -
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
vlan: dont drop packets from unknown vlans in promiscuous mode
Phonet: Correct header retrieval after pskb_may_pull
um: Proper Fix for f25c80a4: remove duplicate structure field initialization
ip_gre: Fix dependencies wrt. ipv6.
net-2.6: SYN retransmits: Add new parameter to retransmits_timed_out()
iwl3945: queue the right work if the scan needs to be aborted
mac80211: fix use-after-free -
* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel:
drm/i915: Rephrase pwrite bounds checking to avoid any potential overflow
drm/i915: Sanity check pread/pwrite
drm/i915: Use pipe state to tell when pipe is off
drm/i915: vblank status not valid while training display port
drivers/gpu/drm/i915/i915_gem.c: Add missing error handling code
drm/i915: Fix refleak during eviction.
drm/i915: fix GMCH power reporting -
Building under memory pressure, with KSM on 2.6.36-rc5, collapsed with
an internal compiler error: typically indicating an error in swapping.Perhaps there's a timing issue which makes it now more likely, perhaps
it's just a long time since I tried for so long: this bug goes back to
KSM swapping in 2.6.33.Notice how reuse_swap_page() allows an exclusive page to be reused, but
only does SetPageDirty if it can delete it from swap cache right then -
if it's currently under Writeback, it has to be left in cache and we
don't SetPageDirty, but the page can be reused. Fine, the dirty bit
will get set in the pte; but notice how zap_pte_range() does not bother
to transfer pte_dirty to page_dirty when unmapping a PageAnon.If KSM chooses to share such a page, it will look like a clean copy of
swapcache, and not be written out to swap when its memory is needed;
then stale data read back from swap when it's needed again.We could fix this in reuse_swap_page() (or even refuse to reuse a
page under writeback), but it's more honest to fix my oversight in
KSM's write_protect_page(). Several days of testing on three machines
confirms that this fixes the issue they showed.Signed-off-by: Hugh Dickins
Cc: Andrew Morton
Cc: Andrea Arcangeli
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds -
2.6.36-rc1 commit 21d0d443cdc1658a8c1484fdcece4803f0f96d0e "rmap:
resurrect page_address_in_vma anon_vma check" was right to resurrect
that check; but now that it's comparing anon_vma->roots instead of
just anon_vmas, there's a danger of oopsing on a NULL anon_vma.In most cases no NULL anon_vma ever gets here; but it turns out that
occasionally KSM, when enabled on a forked or forking process, will
itself call page_address_in_vma() on a "half-KSM" page left over from
an earlier failed attempt to merge - whose page_anon_vma() is NULL.It's my bug that those should be getting here at all: I thought they
were already dealt with, this oops proves me wrong, I'll fix it in
the next release - such pages are effectively pinned until their
process exits, since rmap cannot find their ptes (though swapoff can).For now just work around it by making page_address_in_vma() safe (and
add a comment on why that check is wanted anyway). A similar check
in __page_check_anon_rmap() is safe because do_page_add_anon_rmap()
already excluded KSM pages.Signed-off-by: Hugh Dickins
Cc: Andrew Morton
Cc: Andrea Arcangeli
Cc: Rik van Riel
Signed-off-by: Linus Torvalds
04 Oct, 2010
3 commits
-
Both python_scripting_ops and perl_scripting_ops have two global definitions.
One in trace-event-scripting.c and one in their respective scripting-engine
modules.The issue is that depending on the linker order one definition or the other
is chosen. One is uninitialized (bss), while the other is initialized. If
the uninitialized version is chosen, then perf does not function properly.This patch fixes this by adding the extern prefix to the definitions in
trace-event-scripting.c.Cc: David S. Miller
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Robert Richter
LKML-Reference:
Signed-off-by: Stephane Eranian
Signed-off-by: Arnaldo Carvalho de Melo -
There a typo in util/ui/browsers/hists.c that leads to a segfault when you
press the 'a' key on a non-resolved symbol (plain hex address).LKML-Reference:
Signed-off-by: Frederik Deweerdt
Signed-off-by: Arnaldo Carvalho de Melo -
The patch ecafda6 introduced a problem where all object files would be
always rebuilt, fix it by using:http://www.gnu.org/software/make/manual/html_node/Prerequisite-Types.html
Reported-by: Arnaldo Carvalho de Melo
Cc: Bernd Petrovitsch
Signed-off-by: Kusanagi Kouichi
Signed-off-by: Arnaldo Carvalho de Melo
03 Oct, 2010
7 commits
-
... and do the same for pread.
Signed-off-by: Chris Wilson
Cc: stable@kernel.org -
Move the access control up from the fast paths, which are no longer
universally taken first, up into the caller. This then duplicates some
sanity checking along the slow paths, but is much simpler.
Tracked as CVE-2010-2962.Reported-by: Kees Cook
Signed-off-by: Chris Wilson
Cc: stable@kernel.org -
Sleep while acquiring a resource lock on the Super I/O port. This should
prevent collisions from causing the hardware probe to fail with -EBUSY.Signed-off-by: Giel van Schijndel
Acked-by: Hans de Goede
Signed-off-by: Guenter Roeck -
Instead of waiting for the display line value to settle, we can simply
wait for the pipe configuration register 'state' bit to turn off.Contrarywise, disabling the plane will not cause the display line
value to stop changing, so instead we wait for the vblank interrupt
bit to get set. And, we only do this when we're not about to wait for
the pipe to turn off.Signed-off-by: Keith Packard
Signed-off-by: Chris Wilson -
While the display port is in training mode, vblank interrupts don't
occur. Because we have to wait for the display port output to turn on
before starting the training sequence, enable the output in 'normal'
mode so that we can tell when a vblank has occurred, then start the
training sequence.Signed-off-by: Keith Packard
Signed-off-by: Chris Wilson -
This patch adds the OF hook to the spi core so that devices
can automatically be registered based on device tree data. This fixes
a problem with spi devices not binding to drivers after the cleanup of
the spi & i2c binding code.Signed-off-by: Sinan Akman
Signed-off-by: Grant Likely -
The SPI_MASTER_NO_TX bit (can't do buffer write) wasn't tested. This
code was introduced in commit 3c8e1a84 (spi/spi-gpio: add support for
controllers without MISO or MOSI pin). This patch fixes a bug in
choosing which transfer ops to use.Signed-off-by: Roel Kluin
Signed-off-by: Grant Likely
02 Oct, 2010
17 commits
-
Extend the error handling code with operations found in other nearby error
handling codeA simplified version of the sematic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)//
@r exists@
@r@
statement S1,S2,S3;
constant C1,C2,C3;
@@*if (...)
{... S1 return -C1;}
...
*if (...)
{... when != S1
return -C2;}
...
*if (...)
{... S1 return -C3;}
//Signed-off-by: Julia Lawall
Signed-off-by: Chris Wilson
Cc: stable@kernel.org -
The SYNC bits are BIT6 and BIT7 of MAX8649_SYNC register.
pdata->extclk_freq could be [0|1|2].
(MAX8649_EXTCLK_26MHZ|MAX8649_EXTCLK_13MHZ|MAX8649_EXTCLK_19MHZ)
It requires to left shift 6 bits to properly set extclk_freq.Signed-off-by: Axel Lin
Acked-by: Mark Brown
Signed-off-by: Liam Girdwood -
This patch fixes a typo that incorrectly reports mA numbers as uA.
Signed-off-by: Cyril Chemparathy
Acked-by: Mark Brown
Signed-off-by: Liam Girdwood -
If device_register() fails then call put_device().
See comment to device_register.Signed-off-by: Vasiliy Kulikov
Acked-by: Mark Brown
Signed-off-by: Liam Girdwood -
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
cifs: prevent infinite recursion in cifs_reconnect_tcon
cifs: set backing_dev_info on new S_ISREG inodes -
…git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, hpet: Fix bogus error check in hpet_assign_irq()
x86, irq: Plug memory leak in sparse irq
x86, cpu: After uncapping CPUID, re-run CPU feature detection -
flush_icache_range() is given virtual addresses to describe the region. It
deals with these by attempting to translate them through the current set of
page tables.This is fine for userspace memory and vmalloc()'d areas as they are governed by
page tables. However, since the regions above 0x80000000 aren't translated
through the page tables by the MMU, the kernel doesn't bother to set up page
tables for them (see paging_init()).This means flush_icache_range() as it stands cannot be used to flush regions of
the VM area between 0x80000000 and 0x9fffffff where the kernel resides if the
data cache is operating in WriteBack mode.To fix this, make flush_icache_range() first check for addresses in the upper
half of VM space and deal with them appropriately, before dealing with any
range in the page table mapped area.Ordinarily, this is not a problem, but it has the capacity to make kprobes and
kgdb malfunction. It should not affect gdbstub, signal frame setup or module
loading as gdb has its own flush functions, and the others take place in the
page table mapped area only.Signed-off-by: David Howells
Acked-by: Akira Takeuchi
Signed-off-by: Linus Torvalds -
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
vmwgfx: Fix fb VRAM pinning failure due to fragmentation
vmwgfx: Remove initialisation of dev::devname
vmwgfx: Enable use of the vblank system
vmwgfx: vt-switch (master drop) fixes
drm/vmwgfx: Fix breakage introduced by commit "drm: block userspace under allocating buffer and having drivers overwrite it (v2)"
drm: Hold the mutex when dropping the last GEM reference (v2)
drm/gem: handlecount isn't really a kref so don't make it one.
drm: i810/i830: fix locked ioctl variant
drm/radeon/kms: add quirk for MSI K9A2GM motherboard
drm/radeon/kms: fix potential segfault in r600_ioctl_wait_idle
drm: Prune GEM vma entries
drm/radeon/kms: fix up encoder info messages for DFP6
drm/radeon: fix PCI ID 5657 to be an RV410 -
* 'for-linus/i2c/2636-rc5' of git://git.fluff.org/bjdooks/linux:
i2c-s3c2410: fix calculation of SDA line delay
i2c-davinci: Fix race when setting up for TX
i2c-octeon: Return -ETIMEDOUT in octeon_i2c_wait() on timeout -
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI: invoke DSDT corruption workaround on all Toshiba Satellite
ACPI, APEI, Fix ERST MOVE_DATA instruction implementation
ACPI: fan: Fix more unbalanced code block
ACPI: acpi_pad: simplify code to avoid false gcc build warning
ACPI, APEI, Fix error path for memory allocation
ACPI, APEI, HEST Fix the unsuitable usage of platform_data
ACPI, APEI, Fix acpi_pre_map() return value
ACPI, APEI, Fix APEI related table size checking
ACPI: Disable Windows Vista compatibility for Toshiba P305D
ACPI: Kconfig: fix typo.
ACPI: add missing __percpu markup in arch/x86/kernel/acpi/cstate.c
ACPI: Fix typos
ACPI video: fix a poor warning message
ACPI: fix build warnings resulting from merge window conflict
ACPI: EC: add Vista incompatibility DMI entry for Toshiba Satellite L355
ACPI: expand Vista blacklist to include SP1 and SP2
ACPI: delete ZEPTO idle=nomwait DMI quirk
ACPI: enable repeated PCIEXP wakeup by clearing PCIEXP_WAKE_STS on resume
PM / ACPI: Blacklist systems known to require acpi_sleep=nonvs
ACPI: Don't report current_now if battery reports in mWh -
* 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6:
intel_idle: Voluntary leave_mm before entering deeper
acpi_idle: add missing \n to printk
intel_idle: add missing __percpu markup
intel_idle: Change mode 755 => 644
cpuidle: Fix typos
intel_idle: PCI quirk to prevent Lenovo Ideapad s10-3 boot hang -
…/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:
omap: McBSP: tx_irq_completion used in rx_irq_handler
omap: Fix compile dependency to LEDS_CLASS -
Prevent from recursively locking the reiserfs lock in reiserfs_unpack()
because we may call journal_begin() that requires the lock to be taken
only once, otherwise it won't be able to release the lock while taking
other mutexes, ending up in inverted dependencies between the journal
mutex and the reiserfs lock for example.This fixes:
=======================================================
[ INFO: possible circular locking dependency detected ]
2.6.35.4.4a #3
-------------------------------------------------------
lilo/1620 is trying to acquire lock:
(&journal->j_mutex){+.+...}, at: [] do_journal_begin_r+0x7f/0x340 [reiserfs]but task is already holding lock:
(&REISERFS_SB(s)->lock){+.+.+.}, at: [] reiserfs_write_lock+0x28/0x40 [reiserfs]which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&REISERFS_SB(s)->lock){+.+.+.}:
[] lock_acquire+0x67/0x80
[] __mutex_lock_common+0x4d/0x410
[] mutex_lock_nested+0x18/0x20
[] reiserfs_write_lock+0x28/0x40 [reiserfs]
[] do_journal_begin_r+0x86/0x340 [reiserfs]
[] journal_begin+0x77/0x140 [reiserfs]
[] reiserfs_remount+0x224/0x530 [reiserfs]
[] do_remount_sb+0x60/0x110
[] do_mount+0x625/0x790
[] sys_mount+0x84/0xb0
[] syscall_call+0x7/0xb-> #0 (&journal->j_mutex){+.+...}:
[] __lock_acquire+0x1026/0x1180
[] lock_acquire+0x67/0x80
[] __mutex_lock_common+0x4d/0x410
[] mutex_lock_nested+0x18/0x20
[] do_journal_begin_r+0x7f/0x340 [reiserfs]
[] journal_begin+0x77/0x140 [reiserfs]
[] reiserfs_persistent_transaction+0x41/0x90 [reiserfs]
[] reiserfs_get_block+0x22c/0x1530 [reiserfs]
[] __block_prepare_write+0x1bb/0x3a0
[] block_prepare_write+0x26/0x40
[] reiserfs_prepare_write+0x88/0x170 [reiserfs]
[] reiserfs_unpack+0xe6/0x120 [reiserfs]
[] reiserfs_ioctl+0x272/0x320 [reiserfs]
[] vfs_ioctl+0x28/0xa0
[] do_vfs_ioctl+0x32d/0x5c0
[] sys_ioctl+0x63/0x70
[] syscall_call+0x7/0xbother info that might help us debug this:
2 locks held by lilo/1620:
#0: (&sb->s_type->i_mutex_key#8){+.+.+.}, at: [] reiserfs_unpack+0x6a/0x120 [reiserfs]
#1: (&REISERFS_SB(s)->lock){+.+.+.}, at: [] reiserfs_write_lock+0x28/0x40 [reiserfs]stack backtrace:
Pid: 1620, comm: lilo Not tainted 2.6.35.4.4a #3
Call Trace:
[] __lock_acquire+0x1026/0x1180
[] lock_acquire+0x67/0x80
[] __mutex_lock_common+0x4d/0x410
[] mutex_lock_nested+0x18/0x20
[] do_journal_begin_r+0x7f/0x340 [reiserfs]
[] journal_begin+0x77/0x140 [reiserfs]
[] reiserfs_persistent_transaction+0x41/0x90 [reiserfs]
[] reiserfs_get_block+0x22c/0x1530 [reiserfs]
[] __block_prepare_write+0x1bb/0x3a0
[] block_prepare_write+0x26/0x40
[] reiserfs_prepare_write+0x88/0x170 [reiserfs]
[] reiserfs_unpack+0xe6/0x120 [reiserfs]
[] reiserfs_ioctl+0x272/0x320 [reiserfs]
[] vfs_ioctl+0x28/0xa0
[] do_vfs_ioctl+0x32d/0x5c0
[] sys_ioctl+0x63/0x70
[] syscall_call+0x7/0xbReported-by: Jarek Poplawski
Tested-by: Jarek Poplawski
Signed-off-by: Frederic Weisbecker
Cc: Jeff Mahoney
Cc: All since 2.6.32
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The reiserfs mutex already depends on the inode mutex, so we can't lock
the inode mutex in reiserfs_unpack() without using the safe locking API,
because reiserfs_unpack() is always called with the reiserfs mutex locked.This fixes:
=======================================================
[ INFO: possible circular locking dependency detected ]
2.6.35c #13
-------------------------------------------------------
lilo/1606 is trying to acquire lock:
(&sb->s_type->i_mutex_key#8){+.+.+.}, at: [] reiserfs_unpack+0x60/0x110 [reiserfs]but task is already holding lock:
(&REISERFS_SB(s)->lock){+.+.+.}, at: [] reiserfs_write_lock+0x28/0x40 [reiserfs]which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&REISERFS_SB(s)->lock){+.+.+.}:
[] lock_acquire+0x67/0x80
[] __mutex_lock_common+0x4d/0x410
[] mutex_lock_nested+0x18/0x20
[] reiserfs_write_lock+0x28/0x40 [reiserfs]
[] reiserfs_lookup_privroot+0x2a/0x90 [reiserfs]
[] reiserfs_fill_super+0x941/0xe60 [reiserfs]
[] get_sb_bdev+0x117/0x170
[] get_super_block+0x21/0x30 [reiserfs]
[] vfs_kern_mount+0x6a/0x1b0
[] do_kern_mount+0x39/0xe0
[] do_mount+0x340/0x790
[] sys_mount+0x84/0xb0
[] syscall_call+0x7/0xb-> #0 (&sb->s_type->i_mutex_key#8){+.+.+.}:
[] __lock_acquire+0x1026/0x1180
[] lock_acquire+0x67/0x80
[] __mutex_lock_common+0x4d/0x410
[] mutex_lock_nested+0x18/0x20
[] reiserfs_unpack+0x60/0x110 [reiserfs]
[] reiserfs_ioctl+0x272/0x320 [reiserfs]
[] vfs_ioctl+0x28/0xa0
[] do_vfs_ioctl+0x32d/0x5c0
[] sys_ioctl+0x63/0x70
[] syscall_call+0x7/0xbother info that might help us debug this:
1 lock held by lilo/1606:
#0: (&REISERFS_SB(s)->lock){+.+.+.}, at: [] reiserfs_write_lock+0x28/0x40 [reiserfs]stack backtrace:
Pid: 1606, comm: lilo Not tainted 2.6.35c #13
Call Trace:
[] __lock_acquire+0x1026/0x1180
[] lock_acquire+0x67/0x80
[] __mutex_lock_common+0x4d/0x410
[] mutex_lock_nested+0x18/0x20
[] reiserfs_unpack+0x60/0x110 [reiserfs]
[] reiserfs_ioctl+0x272/0x320 [reiserfs]
[] vfs_ioctl+0x28/0xa0
[] do_vfs_ioctl+0x32d/0x5c0
[] sys_ioctl+0x63/0x70
[] syscall_call+0x7/0xbReported-by: Jarek Poplawski
Tested-by: Jarek Poplawski
Signed-off-by: Frederic Weisbecker
Cc: Jeff Mahoney
Cc: [2.6.32 and later]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Kukjin Kim
Acked-by: Ben Dooks
Acked-by: Russell King
Cc: Kyungmin Park
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I moved couple years ago, so let's update my email and snail mail.
And I do not have any access to Matrox hardware anymore, and I'm quite
unresponsive to matroxfb bug reports (sorry Alan), so saying that I'm
maintainer is a bit far fetched.For ncpfs I do not use ncpfs in my daily life either, but at least I can
test that one, so I can stay listed here for odd fixes.Signed-off-by: Petr Vandrovec
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Having the limits file world readable will ease the task of system
management on systems where root privileges might be restricted.Having admin restricted with root priviledges, he/she could not check
other users process' limits.Also it'd align with most of the /proc stat files.
Signed-off-by: Jiri Olsa
Acked-by: Neil Horman
Cc: Eugene Teo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
