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| author | Robert Richter <robert.richter@amd.com> | 2012-04-02 22:19:10 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-05-09 17:23:13 +0400 |
| commit | 6accb9cf76080422d400a641d9068b6b2a2c216f (patch) | |
| tree | 3774a7b43cb513761924209f5d51b1a497fcd3d2 /arch/x86/include/asm/perf_event.h | |
| parent | 7bf352384fda3f678a283928c6c5b2cd9da877e4 (diff) | |
| download | linux-6accb9cf76080422d400a641d9068b6b2a2c216f.tar.xz | |
perf/x86-ibs: Fix frequency profiling
Fixing profiling at a fixed frequency, in this case the freq value and
sample period was setup incorrectly. Since sampling periods are
adjusted we also allow periods that have lower 4 bits set.
Another fix is the setup of the hw counter: If we modify
hwc->sample_period, we also need to update hwc->last_period and
hwc->period_left.
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1333390758-10893-5-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/perf_event.h')
0 files changed, 0 insertions, 0 deletions