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| author |   Peter Zijlstra <peterz@infradead.org> | 2012-06-05 15:30:31 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2012-06-06 16:59:44 +0200 |
| commit | b430f7c4706aeba4270c7ab7744fc504b9315e1c (patch) | |
| tree | ca92a63aa1499981c30fccb63db1270596af2aad /tools/perf/scripts/python/syscall-counts.py | |
| parent | x86/decoder: Fix bsr/bsf/jmpe decoding with operand-size prefix (diff) | |
| download | linux-dev-b430f7c4706aeba4270c7ab7744fc504b9315e1c.tar.xz linux-dev-b430f7c4706aeba4270c7ab7744fc504b9315e1c.zip | |
perf/x86: Fix Intel shared extra MSR allocation
Zheng Yan reported that event group validation can wreck event state
when Intel extra_reg allocation changes event state.
Validation shouldn't change any persistent state. Cloning events in
validate_{event,group}() isn't really pretty either, so add a few
special cases to avoid modifying the event state.
The code is restructured to minimize the special case impact.
Reported-by: Zheng Yan <zheng.z.yan@linux.intel.com>
Acked-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1338903031.28282.175.camel@twins
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions