linux

mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-02-03 12:48:18 -05:00

Files

Peter Zijlstra c33a0bc4e4 perf_counter: fix race in perf_output_*

When two (or more) contexts output to the same buffer, it is possible
to observe half written output.

Suppose we have CPU0 doing perf_counter_mmap(), CPU1 doing
perf_counter_overflow(). If CPU1 does a wakeup and exposes head to
user-space, then CPU2 can observe the data CPU0 is still writing.

[ Impact: fix occasionally corrupted profiling records ]

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <20090501102533.007821627@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2009-05-01 13:23:43 +02:00

acpi

Merge branch 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel

2009-04-28 17:21:20 -07:00

asm-generic

Remove unused support code for refok sections.

2009-04-27 19:51:58 -07:00

crypto

crypto: zlib - New zlib crypto module, using pcomp

2009-03-04 15:16:19 +08:00

drm

drm/i915: add support for G41 chipset