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    SubjectRe: [PATCH V7 01/18] perf/core: Use static_call to optimize perf_guest_info_callbacks
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    On 7/2/2021 7:22 PM, Peter Zijlstra wrote:
    > On Tue, Jun 22, 2021 at 05:42:49PM +0800, Zhu Lingshan wrote:
    >> diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
    >> index 8f71dd72ef95..c71af4cfba9b 100644
    >> --- a/arch/x86/events/core.c
    >> +++ b/arch/x86/events/core.c
    >> @@ -90,6 +90,27 @@ DEFINE_STATIC_CALL_NULL(x86_pmu_pebs_aliases, *x86_pmu.pebs_aliases);
    >> */
    >> DEFINE_STATIC_CALL_RET0(x86_pmu_guest_get_msrs, *x86_pmu.guest_get_msrs);
    >>
    >> +DEFINE_STATIC_CALL_RET0(x86_guest_state, *(perf_guest_cbs->state));
    >> +DEFINE_STATIC_CALL_RET0(x86_guest_get_ip, *(perf_guest_cbs->get_ip));
    >> +DEFINE_STATIC_CALL_RET0(x86_guest_handle_intel_pt_intr, *(perf_guest_cbs->handle_intel_pt_intr));
    >> +
    >> +void arch_perf_update_guest_cbs(void)
    >> +{
    >> + static_call_update(x86_guest_state, (void *)&__static_call_return0);
    >> + static_call_update(x86_guest_get_ip, (void *)&__static_call_return0);
    >> + static_call_update(x86_guest_handle_intel_pt_intr, (void *)&__static_call_return0);
    >> +
    >> + if (perf_guest_cbs && perf_guest_cbs->state)
    >> + static_call_update(x86_guest_state, perf_guest_cbs->state);
    >> +
    >> + if (perf_guest_cbs && perf_guest_cbs->get_ip)
    >> + static_call_update(x86_guest_get_ip, perf_guest_cbs->get_ip);
    >> +
    >> + if (perf_guest_cbs && perf_guest_cbs->handle_intel_pt_intr)
    >> + static_call_update(x86_guest_handle_intel_pt_intr,
    >> + perf_guest_cbs->handle_intel_pt_intr);
    >> +}
    > Coding style wants { } on that last if().
    will fix these coding style issues in V8

    Thanks!

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