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| author |   Peter Zijlstra <peterz@infradead.org> | 2022-05-10 21:22:04 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-05-18 00:08:25 +0200 |
| commit | 3c27b0c6ea48bc61492a138c410e262735d660ab (patch) | |
| tree | facfef5bda5b0cf88f172f5dd25309f1964e8ad9 /scripts/generate_rust_analyzer.py | |
| parent | perf/x86/amd: Remove unused variable 'hwc' (diff) | |
| download | wireguard-linux-3c27b0c6ea48bc61492a138c410e262735d660ab.tar.xz wireguard-linux-3c27b0c6ea48bc61492a138c410e262735d660ab.zip | |
perf/x86/amd: Fix AMD BRS period adjustment
There's two problems with the current amd_brs_adjust_period() code:
- it isn't in fact AMD specific and wil always adjust the period;
- it adjusts the period, while it should only adjust the event count,
resulting in repoting a short period.
Fix this by using x86_pmu.limit_period, this makes it specific to the
AMD BRS case and ensures only the event count is adjusted while the
reported period is unmodified.
Fixes: ba2fe7500845 ("perf/x86/amd: Add AMD branch sampling period adjustment")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Diffstat (limited to 'scripts/generate_rust_analyzer.py')
0 files changed, 0 insertions, 0 deletions