LoongArch: Lately init pmu after smp is online
f3334ebb · Bibo Mao <[email protected]> · 2024-04-25 22:17:52 +08:00
There is an 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 an early_initcall() wrapper for the
PMU init funciton init_hw_perf_events(), so that pmu init funciton is
called in do_pre_smp_initcalls() which before function smp_init().
Function reset_counters() cannot work on other CPUs since they haven't
boot up still.
Here replace the wrapper early_initcall() with pure_initcall(), so that
the PMU init function is called after every cpu is online.
Signed-off-by: Bibo Mao <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
- Commit
- f3334ebb8a2a1841c2824594dd992e66de19deb2
- Parents
- d3119bc9
Changes
1 files changed · +1 −1
diff --git a/arch/loongarch/kernel/perf_event.c b/arch/loongarch/kernel/perf_event.c
index 0491bf4..cac7cba 100644
--- a/arch/loongarch/kernel/perf_event.c
+++ b/arch/loongarch/kernel/perf_event.c
@@ -884,4 +884,4 @@ static int __init init_hw_perf_events(void)
return 0;
}
-early_initcall(init_hw_perf_events);
+pure_initcall(init_hw_perf_events);