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| author | Yuan ZhaoXiong <yuanzhaoxiong@baidu.com> | 2021-05-23 21:31:30 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-05-25 17:24:52 +0200 |
| commit | 130708331bc6b03a3c3a78599333faddfebbd0f3 (patch) | |
| tree | 7b47b8d0553098423eb4e37a2116600198a48d7e | |
| parent | c4681547bcce777daf576925a966ffa824edd09d (diff) | |
cpu/hotplug: Simplify access to percpu cpuhp_state
It is unnecessary to invoke per_cpu_ptr() everytime to access cpuhp_state.
Use the available pointer instead.
Signed-off-by: Yuan ZhaoXiong <yuanzhaoxiong@baidu.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Link: https://lore.kernel.org/r/1621776690-13264-1-git-send-email-yuanzhaoxiong@baidu.com
| -rw-r--r-- | kernel/cpu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index e538518556f4..2942cb4644c5 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -961,7 +961,7 @@ static int takedown_cpu(unsigned int cpu) int err; /* Park the smpboot threads */ - kthread_park(per_cpu_ptr(&cpuhp_state, cpu)->thread); + kthread_park(st->thread); /* * Prevent irq alloc/free while the dying cpu reorganizes the @@ -977,7 +977,7 @@ static int takedown_cpu(unsigned int cpu) /* CPU refused to die */ irq_unlock_sparse(); /* Unpark the hotplug thread so we can rollback there */ - kthread_unpark(per_cpu_ptr(&cpuhp_state, cpu)->thread); + kthread_unpark(st->thread); return err; } BUG_ON(cpu_online(cpu)); |