diff options
| author | Bibo Mao <maobibo@loongson.cn> | 2024-04-25 17:17:52 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-30 10:48:48 +0300 |
| commit | b397caeaf3c39a91f25d58027d484f08388eb674 (patch) | |
| tree | e3b0fe2e925a9b9b893566da8ee43ec5bcf91321 | |
| parent | 386248134388f4c3f26f821a516dff8aded5c499 (diff) | |
| download | linux-b397caeaf3c39a91f25d58027d484f08388eb674.tar.xz | |
LoongArch: Lately init pmu after smp is online
[ Upstream commit f3334ebb8a2a1841c2824594dd992e66de19deb2 ]
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>
| -rw-r--r-- | arch/loongarch/kernel/perf_event.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/loongarch/kernel/perf_event.c b/arch/loongarch/kernel/perf_event.c index 0491bf453cd4..cac7cba81b65 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); |