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| author |   Like Xu <likexu@tencent.com> | 2023-02-14 13:07:48 +0800 |
|---|---|---|
| committer |   Sean Christopherson <seanjc@google.com> | 2023-04-06 16:04:31 -0700 |
| commit | 649bccd7fac98225525c79cf4b1cecc4bafdfc54 (patch) | |
| tree | 0b4f2106e08187685229d0c731120768c73767c7 /tools/perf/scripts/python | |
| parent | KVM: VMX: Refactor intel_pmu_{g,}set_msr() to align with other helpers (diff) | |
| download | linux-rng-649bccd7fac98225525c79cf4b1cecc4bafdfc54.tar.xz linux-rng-649bccd7fac98225525c79cf4b1cecc4bafdfc54.zip | |
KVM: x86/pmu: Rewrite reprogram_counters() to improve performance
A valid pmc is always tested before using pmu->reprogram_pmi. Eliminate
this part of the redundancy by setting the counter's bitmask directly,
and in addition, trigger KVM_REQ_PMU only once to save more cpu cycles.
Signed-off-by: Like Xu <likexu@tencent.com>
Link: https://lore.kernel.org/r/20230214050757.9623-4-likexu@tencent.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions