powerpc/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/20250520181644.2673067-7-kan.liang@linux.intel.com

diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index 42ff4d167acc5a0a2713e7af14d6f94b3f362633..8b0081441f85d1168a8af7e5f3eff13f31c2df8f 100644 (file)
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -2344,12 +2344,10 @@ static void record_and_restart(struct perf_event *event, unsigned long val,
                        ppmu->get_mem_weight(&data.weight.full, event->attr.sample_type);
                        data.sample_flags |= PERF_SAMPLE_WEIGHT_TYPE;
                }
-               if (perf_event_overflow(event, &data, regs))
-                       power_pmu_stop(event, 0);
+               perf_event_overflow(event, &data, regs);
        } else if (period) {
                /* Account for interrupt in case of invalid SIAR */
-               if (perf_event_account_interrupt(event))
-                       power_pmu_stop(event, 0);
+               perf_event_account_interrupt(event);
        }
 }
 

diff --git a/arch/powerpc/perf/core-fsl-emb.c b/arch/powerpc/perf/core-fsl-emb.c
index d2ffcc7021c5180810f03ffe68049eafd8bd16a4..7120ab20cbfecb7d195b00070592e8c9d028d13f 100644 (file)
--- a/arch/powerpc/perf/core-fsl-emb.c
+++ b/arch/powerpc/perf/core-fsl-emb.c
@@ -635,8 +635,7 @@ static void record_and_restart(struct perf_event *event, unsigned long val,
 
                perf_sample_data_init(&data, 0, last_period);
 
-               if (perf_event_overflow(event, &data, regs))
-                       fsl_emb_pmu_stop(event, 0);
+               perf_event_overflow(event, &data, regs);
        }
 }