diff options
| author | Kan Liang <kan.liang@linux.intel.com> | 2025-05-20 11:16:38 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-05-21 13:57:45 +0200 |
| commit | 8c977a17996eb106e9dfd8d37d2eb510dd2c235e (patch) | |
| tree | a474f84f078d78df34f22c1ba44fe7b12c5e0af7 | |
| parent | f1a6fe2ab1d937370e3f334cbf519c794eef4411 (diff) | |
alpha/perf: 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/20250520181644.2673067-11-kan.liang@linux.intel.com
| -rw-r--r-- | arch/alpha/kernel/perf_event.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/arch/alpha/kernel/perf_event.c b/arch/alpha/kernel/perf_event.c index 1f0eb4f25c0f..a3eaab094ece 100644 --- a/arch/alpha/kernel/perf_event.c +++ b/arch/alpha/kernel/perf_event.c @@ -852,14 +852,9 @@ static void alpha_perf_event_irq_handler(unsigned long la_ptr, alpha_perf_event_update(event, hwc, idx, alpha_pmu->pmc_max_period[idx]+1); perf_sample_data_init(&data, 0, hwc->last_period); - if (alpha_perf_event_set_period(event, hwc, idx)) { - if (perf_event_overflow(event, &data, regs)) { - /* Interrupts coming too quickly; "throttle" the - * counter, i.e., disable it for a little while. - */ - alpha_pmu_stop(event, 0); - } - } + if (alpha_perf_event_set_period(event, hwc, idx)) + perf_event_overflow(event, &data, regs); + wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask); return; |