xtensa/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>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Link: https://lore.kernel.org/r/20250520181644.2673067-16-kan.liang@linux.intel.com

diff --git a/arch/xtensa/kernel/perf_event.c b/arch/xtensa/kernel/perf_event.c
index 183618090d05bfd8d340e1bd4d8d23cfe9217966..223f1d4523109d3fea8374c22413fc8bfeb509a9 100644 (file)
--- a/arch/xtensa/kernel/perf_event.c
+++ b/arch/xtensa/kernel/perf_event.c
@@ -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;