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xtensa/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>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Link: https://lore.kernel.org/r/20250520181644.2673067-16-kan.liang@linux.intel.com
This commit is contained in:
Kan Liang 2025-05-20 11:16:43 -07:00 • committed by Peter Zijlstra
parent e4806c17bf
commit 5fa541ab04
1 changed files with 1 additions and 2 deletions
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3
arch/xtensa/kernel/perf_event.c
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@ -388,8 +388,7 @@ irqreturn_t xtensa_pmu_irq_handler(int irq, void *dev_id)
struct pt_regs *regs = get_irq_regs();
perf_sample_data_init(&data, 0, last_period);
if (perf_event_overflow(event, &data, regs))
xtensa_pmu_stop(event, 0);
perf_event_overflow(event, &data, regs);
}
rc = IRQ_HANDLED;