KVM: x86/pmu: Update sample period in pmc_write_counter()

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Update a PMC's sample period in pmc_write_counter() to deduplicate code
across all callers of pmc_write_counter().  Opportunistically move
pmc_write_counter() into pmc.c now that it's doing more work.  WRMSR isn't
such a hot path that an extra CALL+RET pair will be problematic, and the
order of function definitions needs to be changed anyways, i.e. now is a
convenient time to eat the churn.

Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Link: https://lore.kernel.org/r/20231103230541.352265-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Sean Christopherson 2023-11-03 16:05:40 -07:00

parent ec61b2306d

commit 89acf1237b

4 changed files with 28 additions and 27 deletions

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27

arch/x86/kvm/pmu.c

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25

arch/x86/kvm/pmu.h

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1

arch/x86/kvm/svm/pmu.c

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2

arch/x86/kvm/vmx/pmu_intel.c

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