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().