There is smp function call named reset_counters() to init PMU registers of
every CPU in PMU initialization state. It requires that all CPUs are
online. However there is early_initcall prefix with PMU init funciton
init_hw_perf_events(), so that pmu init funciton is called in
do_pre_smp_initcalls() and before function smp_init(). Function
reset_counters() cannot work on other CPUs since they do not boot up
still.
Here replace prefix early_initcall with pure_initcall, so that PMU
init function is called after every cpu is online.
Signed-off-by: Bibo Mao <[email protected]>
---
arch/loongarch/kernel/perf_event.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/loongarch/kernel/perf_event.c b/arch/loongarch/kernel/perf_event.c
index 3265c8f33223..f86a4b838dd7 100644
--- a/arch/loongarch/kernel/perf_event.c
+++ b/arch/loongarch/kernel/perf_event.c
@@ -874,4 +874,4 @@ static int __init init_hw_perf_events(void)
return 0;
}
-early_initcall(init_hw_perf_events);
+pure_initcall(init_hw_perf_events);
base-commit: e88c4cfcb7b888ac374916806f86c17d8ecaeb67