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Date: Thu, 7 Jul 2022 16:17:14 +0200
From: Vincent Guittot <vincent.guittot@...aro.org>
To: Hao Jia <jiahao.os@...edance.com>
Cc: mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
mgorman@...e.de, bristot@...hat.com, vschneid@...hat.com,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sched/fair: Remove unused parameter idle of _nohz_idle_balance()
On Thu, 7 Jul 2022 at 05:42, Hao Jia <jiahao.os@...edance.com> wrote:
>
> Since commit 7a82e5f52a35 ("sched/fair: Merge for each idle cpu
> loop of ILB") was merged. The parameter idle of _nohz_idle_balance()
The description of the commit should be in a single line.
commit 7a82e5f52a35 ("sched/fair: Merge for each idle cpu loop of ILB")
> is not used anymore so we can remove it.
>
> Signed-off-by: Hao Jia <jiahao.os@...edance.com>
Reviewed-by: Vincent Guittot <vincent.guittot@...aro.org>
> ---
> kernel/sched/fair.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> index 77b2048a9326..8d4be2a95e37 100644
> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -10682,8 +10682,7 @@ static bool update_nohz_stats(struct rq *rq)
> * can be a simple update of blocked load or a complete load balance with
> * tasks movement depending of flags.
> */
> -static void _nohz_idle_balance(struct rq *this_rq, unsigned int flags,
> - enum cpu_idle_type idle)
> +static void _nohz_idle_balance(struct rq *this_rq, unsigned int flags)
> {
> /* Earliest time when we have to do rebalance again */
> unsigned long now = jiffies;
> @@ -10798,7 +10797,7 @@ static bool nohz_idle_balance(struct rq *this_rq, enum cpu_idle_type idle)
> if (idle != CPU_IDLE)
> return false;
>
> - _nohz_idle_balance(this_rq, flags, idle);
> + _nohz_idle_balance(this_rq, flags);
>
> return true;
> }
> @@ -10818,7 +10817,7 @@ void nohz_run_idle_balance(int cpu)
> * (ie NOHZ_STATS_KICK set) and will do the same.
> */
> if ((flags == NOHZ_NEWILB_KICK) && !need_resched())
> - _nohz_idle_balance(cpu_rq(cpu), NOHZ_STATS_KICK, CPU_IDLE);
> + _nohz_idle_balance(cpu_rq(cpu), NOHZ_STATS_KICK);
> }
>
> static void nohz_newidle_balance(struct rq *this_rq)
> --
> 2.32.0
>
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