Re: [PATCH V2 1/2] Tick: Introduce tick_nohz_check() to check nohzenable status

[Viresh Kumar]

On 15 November 2013 14:05, Lan Tianyu <tianyu.lan@xxxxxxxxx> wrote:
> In some cases, nohz enable status needs to be checked. E.G, in RCU and cpufreq
> ondemand governor. So add tick_nohz_check() to return tick_nohz_enabled value
> And use tick_nohz_check() instead of referencing tick_nohz_enabled in the rcutree_plugin.h.
>
> Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
> ---
>
> Change since V2:
>         Add ACCESS_ONCE to tick_nohz_check().
>
>  include/linux/tick.h     | 2 ++
>  kernel/rcutree_plugin.h  | 4 +---
>  kernel/time/tick-sched.c | 8 +++++++-
>  3 files changed, 10 insertions(+), 4 deletions(-)

Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
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