On Tue, Aug 29, 2017 at 11:46:37AM +0000, Yang Zhang wrote:
> Add poll in do_idle. For UP VM, if there are running task, it will not
> goes into idle path, so we only enable poll in SMP VM.
>
> Signed-off-by: Yang Zhang <yang.zhang.wz@xxxxxxxxx>
> Signed-off-by: Quan Xu <quan.xu0@xxxxxxxxx>
Broken SoB chain.
> diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c
> index 6c23e30..b374744 100644
> --- a/kernel/sched/idle.c
> +++ b/kernel/sched/idle.c
> @@ -74,6 +74,7 @@ static noinline int __cpuidle cpu_idle_poll(void)
> }
>
> /* Weak implementations for optional arch specific functions */
> +void __weak arch_cpu_idle_poll(void) { }
> void __weak arch_cpu_idle_prepare(void) { }
> void __weak arch_cpu_idle_enter(void) { }
And not a word on why we need a new arch hook. What's wrong with
arch_cpu_idle_enter() for instance?
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