Messages in this thread Patch in this message |  | | From | Yuan ZhaoXiong <> | Subject | [PATCH] cpu/hotplug: simplify access percpu cpuhp_state | Date | Sun, 23 May 2021 21:31:30 +0800 |
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It is unnecessary to invoke per_cpu_ptr() function everytime to access percpu cpuhp_state and use the variable st instead.
Signed-off-by: Yuan ZhaoXiong <yuanzhaoxiong@baidu.com> --- kernel/cpu.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/cpu.c b/kernel/cpu.c index e538518..2942cb4 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)); -- 1.7.1
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