diff options
| author | Kan Liang <kan.liang@linux.intel.com> | 2025-05-20 11:16:31 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-05-21 13:57:43 +0200 |
| commit | b8328f67206c672a7140fd3a259892e17d96bbe6 (patch) | |
| tree | eb462bd36757bc57d032fe5c9932b47cdb91a343 | |
| parent | e800ac51202f053018f3d6acb1819ecec4d75a2c (diff) | |
perf/x86/intel: Remove driver-specific throttle support
The throttle support has been added in the generic code. Remove
the driver-specific throttle support.
Besides the throttle, perf_event_overflow may return true because of
event_limit. It already does an inatomic event disable. The pmu->stop
is not required either.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250520181644.2673067-4-kan.liang@linux.intel.com
| -rw-r--r-- | arch/x86/events/core.c | 3 | ||||
| -rw-r--r-- | arch/x86/events/intel/core.c | 6 | ||||
| -rw-r--r-- | arch/x86/events/intel/ds.c | 7 | ||||
| -rw-r--r-- | arch/x86/events/intel/knc.c | 3 | ||||
| -rw-r--r-- | arch/x86/events/intel/p4.c | 3 |
5 files changed, 8 insertions, 14 deletions
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index 92c3fb61f2d6..4c49eef8052e 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -1728,8 +1728,7 @@ int x86_pmu_handle_irq(struct pt_regs *regs) perf_sample_save_brstack(&data, event, &cpuc->lbr_stack, NULL); - if (perf_event_overflow(event, &data, regs)) - x86_pmu_stop(event, 0); + perf_event_overflow(event, &data, regs); } if (handled) diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index cd6329207311..3a319cf6d364 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -3138,8 +3138,7 @@ static void x86_pmu_handle_guest_pebs(struct pt_regs *regs, continue; perf_sample_data_init(data, 0, event->hw.last_period); - if (perf_event_overflow(event, data, regs)) - x86_pmu_stop(event, 0); + perf_event_overflow(event, data, regs); /* Inject one fake event is enough. */ break; @@ -3282,8 +3281,7 @@ static int handle_pmi_common(struct pt_regs *regs, u64 status) if (has_branch_stack(event)) intel_pmu_lbr_save_brstack(&data, cpuc, event); - if (perf_event_overflow(event, &data, regs)) - x86_pmu_stop(event, 0); + perf_event_overflow(event, &data, regs); } return handled; diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c index 319d0d4ce30c..fb02e434d072 100644 --- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -2359,8 +2359,7 @@ __intel_pmu_pebs_last_event(struct perf_event *event, * All but the last records are processed. * The last one is left to be able to call the overflow handler. */ - if (perf_event_overflow(event, data, regs)) - x86_pmu_stop(event, 0); + perf_event_overflow(event, data, regs); } if (hwc->flags & PERF_X86_EVENT_AUTO_RELOAD) { @@ -2588,8 +2587,8 @@ static void intel_pmu_drain_pebs_nhm(struct pt_regs *iregs, struct perf_sample_d if (error[bit]) { perf_log_lost_samples(event, error[bit]); - if (iregs && perf_event_account_interrupt(event)) - x86_pmu_stop(event, 0); + if (iregs) + perf_event_account_interrupt(event); } if (counts[bit]) { diff --git a/arch/x86/events/intel/knc.c b/arch/x86/events/intel/knc.c index 3e8ec049b46d..384589168c1a 100644 --- a/arch/x86/events/intel/knc.c +++ b/arch/x86/events/intel/knc.c @@ -254,8 +254,7 @@ again: perf_sample_data_init(&data, 0, last_period); - if (perf_event_overflow(event, &data, regs)) - x86_pmu_stop(event, 0); + perf_event_overflow(event, &data, regs); } /* diff --git a/arch/x86/events/intel/p4.c b/arch/x86/events/intel/p4.c index c85a9fc44355..126d5ae264cb 100644 --- a/arch/x86/events/intel/p4.c +++ b/arch/x86/events/intel/p4.c @@ -1072,8 +1072,7 @@ static int p4_pmu_handle_irq(struct pt_regs *regs) continue; - if (perf_event_overflow(event, &data, regs)) - x86_pmu_stop(event, 0); + perf_event_overflow(event, &data, regs); } if (handled) |