[PATCH V3 09/16] perf/apple_m1: Remove driver-specific throttle support

From: kan . liang
Date: Fri May 16 2025 - 14:31:18 EST


From: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>

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@xxxxxxxxxxxxxxx>
Cc: Oliver Upton <oliver.upton@xxxxxxxxx>
---
drivers/perf/apple_m1_cpu_pmu.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/perf/apple_m1_cpu_pmu.c b/drivers/perf/apple_m1_cpu_pmu.c
index df9a28ba69dc..81b6f1a62349 100644
--- a/drivers/perf/apple_m1_cpu_pmu.c
+++ b/drivers/perf/apple_m1_cpu_pmu.c
@@ -474,8 +474,7 @@ static irqreturn_t m1_pmu_handle_irq(struct arm_pmu *cpu_pmu)
if (!armpmu_event_set_period(event))
continue;

- if (perf_event_overflow(event, &data, regs))
- m1_pmu_disable_event(event);
+ perf_event_overflow(event, &data, regs);
}

cpu_pmu->start(cpu_pmu);
--
2.38.1