diff options
author | Ingo Molnar <mingo@kernel.org> | 2019-02-28 07:50:39 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2019-02-28 07:50:39 +0100 |
commit | 0614621d89c43ea5b28456c2baf6b0c0e00ca81e (patch) | |
tree | 2dff833e972bdb65d30cb317985a0d41d2c40f0e /arch/x86/events/perf_event.h | |
parent | 0cf264b3133dce56a60ca8b4335d1f76fe26870a (diff) | |
parent | 7d762d69145a54d169f58e56d6dac57a5508debc (diff) | |
download | linux-0614621d89c43ea5b28456c2baf6b0c0e00ca81e.tar.bz2 |
Merge branch 'linus' into locking/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/events/perf_event.h')
-rw-r--r-- | arch/x86/events/perf_event.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h index 78d7b7031bfc..d46fd6754d92 100644 --- a/arch/x86/events/perf_event.h +++ b/arch/x86/events/perf_event.h @@ -646,6 +646,11 @@ struct x86_pmu { * Intel host/guest support (KVM) */ struct perf_guest_switch_msr *(*guest_get_msrs)(int *nr); + + /* + * Check period value for PERF_EVENT_IOC_PERIOD ioctl. + */ + int (*check_period) (struct perf_event *event, u64 period); }; struct x86_perf_task_context { @@ -857,7 +862,7 @@ static inline int amd_pmu_init(void) #ifdef CONFIG_CPU_SUP_INTEL -static inline bool intel_pmu_has_bts(struct perf_event *event) +static inline bool intel_pmu_has_bts_period(struct perf_event *event, u64 period) { struct hw_perf_event *hwc = &event->hw; unsigned int hw_event, bts_event; @@ -868,7 +873,14 @@ static inline bool intel_pmu_has_bts(struct perf_event *event) hw_event = hwc->config & INTEL_ARCH_EVENT_MASK; bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS); - return hw_event == bts_event && hwc->sample_period == 1; + return hw_event == bts_event && period == 1; +} + +static inline bool intel_pmu_has_bts(struct perf_event *event) +{ + struct hw_perf_event *hwc = &event->hw; + + return intel_pmu_has_bts_period(event, hwc->sample_period); } int intel_pmu_save_and_restart(struct perf_event *event); |