diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/events/intel/lbr.c | 6 | ||||
| -rw-r--r-- | arch/x86/include/asm/perf_event.h | 6 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/capabilities.h | 3 |
3 files changed, 6 insertions, 9 deletions
diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c index 8259d725054d..4dbde69c423b 100644 --- a/arch/x86/events/intel/lbr.c +++ b/arch/x86/events/intel/lbr.c @@ -1603,10 +1603,8 @@ clear_arch_lbr: * x86_perf_get_lbr - get the LBR records information * * @lbr: the caller's memory to store the LBR records information - * - * Returns: 0 indicates the LBR info has been successfully obtained */ -int x86_perf_get_lbr(struct x86_pmu_lbr *lbr) +void x86_perf_get_lbr(struct x86_pmu_lbr *lbr) { int lbr_fmt = x86_pmu.intel_cap.lbr_format; @@ -1614,8 +1612,6 @@ int x86_perf_get_lbr(struct x86_pmu_lbr *lbr) lbr->from = x86_pmu.lbr_from; lbr->to = x86_pmu.lbr_to; lbr->info = (lbr_fmt == LBR_FORMAT_INFO) ? x86_pmu.lbr_info : 0; - - return 0; } EXPORT_SYMBOL_GPL(x86_perf_get_lbr); diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h index 9ac46dbe57d4..5d0f6891ae61 100644 --- a/arch/x86/include/asm/perf_event.h +++ b/arch/x86/include/asm/perf_event.h @@ -543,12 +543,12 @@ static inline void perf_check_microcode(void) { } #if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_INTEL) extern struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr, void *data); -extern int x86_perf_get_lbr(struct x86_pmu_lbr *lbr); +extern void x86_perf_get_lbr(struct x86_pmu_lbr *lbr); #else struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr, void *data); -static inline int x86_perf_get_lbr(struct x86_pmu_lbr *lbr) +static inline void x86_perf_get_lbr(struct x86_pmu_lbr *lbr) { - return -1; + memset(lbr, 0, sizeof(*lbr)); } #endif diff --git a/arch/x86/kvm/vmx/capabilities.h b/arch/x86/kvm/vmx/capabilities.h index 07254314f3dd..479124e49bbd 100644 --- a/arch/x86/kvm/vmx/capabilities.h +++ b/arch/x86/kvm/vmx/capabilities.h @@ -407,7 +407,8 @@ static inline u64 vmx_get_perf_capabilities(void) if (boot_cpu_has(X86_FEATURE_PDCM)) rdmsrl(MSR_IA32_PERF_CAPABILITIES, host_perf_cap); - if (x86_perf_get_lbr(&lbr) >= 0 && lbr.nr) + x86_perf_get_lbr(&lbr); + if (lbr.nr) perf_cap |= host_perf_cap & PMU_CAP_LBR_FMT; if (vmx_pebs_supported()) { |