Re: [PATCH] cpu/hotplug: get rid of CPU_STARTING reference
From: Paul E. McKenney
Date: Wed Aug 17 2016 - 10:22:11 EST
On Wed, Aug 17, 2016 at 02:21:04PM +0200, Sebastian Andrzej Siewior wrote:
> CPU_STARTING is scheduled for removal. There is no use of it in drivers
> and just compatibility use core code. This patch removes it from an RCU
> related comment.
>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Queued, thank you!
Thanx, Paul
> ---
>
> Paul, this "CPU_STARTING" refrences got in via "rcu: Exact CPU-online
> tracking for RCU".
>
> kernel/cpu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/cpu.c b/kernel/cpu.c
> index 35b53a1f56a7..3788ad9d4073 100644
> --- a/kernel/cpu.c
> +++ b/kernel/cpu.c
> @@ -897,7 +897,7 @@ void notify_cpu_starting(unsigned int cpu)
> struct cpuhp_cpu_state *st = per_cpu_ptr(&cpuhp_state, cpu);
> enum cpuhp_state target = min((int)st->target, CPUHP_AP_ONLINE);
>
> - rcu_cpu_starting(cpu); /* All CPU_STARTING notifiers can use RCU. */
> + rcu_cpu_starting(cpu); /* Enables RCU usage on this CPU. */
> while (st->state < target) {
> struct cpuhp_step *step;
>
> --
> 2.9.3
>