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csky/perf: Remove driver-specific throttle support

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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>
Acked-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/20250520181644.2673067-13-kan.liang@linux.intel.com
This commit is contained in:
Kan Liang 2025-05-20 11:16:40 -07:00 committed by Peter Zijlstra
parent a33d4d5325
commit 141fedea79
1 changed files with 1 additions and 2 deletions
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3
arch/csky/kernel/perf_event.c
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@ -1139,8 +1139,7 @@ static irqreturn_t csky_pmu_handle_irq(int irq_num, void *dev)
perf_sample_data_init(&data, 0, hwc->last_period);
csky_pmu_event_set_period(event);
if (perf_event_overflow(event, &data, regs))
csky_pmu_stop_event(event);
perf_event_overflow(event, &data, regs);
}
csky_pmu_enable(&csky_pmu.pmu);