linux/kernel/events
Peter Zijlstra 1d48ca6f38 perf: Fix perf_cgroup_switch for sw-events
commit 95cf59ea72 upstream.

Jiri reported that he could trigger the WARN_ON_ONCE() in
perf_cgroup_switch() using sw-events. This is because sw-events share
a cpuctx with multiple PMUs.

Use the ->unique_pmu pointer to limit the pmu iteration to unique
cpuctx instances.

Reported-and-Tested-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-so7wi2zf3jjzrwcutm2mkz0j@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-01 09:10:52 -07:00
..
callchain.c perf: Don't call release_callchain_buffers() if allocation fails 2012-01-21 09:33:41 +01:00
core.c perf: Fix perf_cgroup_switch for sw-events 2013-10-01 09:10:52 -07:00
hw_breakpoint.c hw_breakpoint: Use cpu_possible_mask in {reserve,release}_bp_slot() 2013-07-03 10:59:01 -07:00
internal.h perf: Fix mmap() accounting hole 2013-07-03 10:59:06 -07:00
Makefile perf: Carve out callchain functionality 2011-11-14 13:31:26 +01:00
ring_buffer.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-01-08 13:21:22 -08:00