LoongArch: Lately init pmu after smp is online

[ Upstream commit f3334ebb8a ]

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 <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Sasha Levin <sashal@kernel.org>

This commit is contained in:

Bibo Mao

2024-04-25 22:17:52 +08:00

committed by

Greg Kroah-Hartman

parent 70b1bf6d9e

commit 1c4ee6acdb

1 changed files with 1 additions and 1 deletions

									
										arch/loongarch/kernel/perf_event.c
									
		+1
		-1
	
												View File
												
				@@ -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);