linux-kernel - Re: [PATCH v5 2/5] sched/fair: Remove unused parameters

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Date: Tue, 13 Feb 2024 17:45:58 +0100
From: Vincent Guittot <vincent.guittot@...aro.org>
To: alexs@...nel.org
Cc: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, 
	Juri Lelli <juri.lelli@...hat.com>, Dietmar Eggemann <dietmar.eggemann@....com>, 
	Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, 
	Daniel Bristot de Oliveira <bristot@...hat.com>, Valentin Schneider <vschneid@...hat.com>, 
	"open list:SCHEDULER" <linux-kernel@...r.kernel.org>, 
	Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
Subject: Re: [PATCH v5 2/5] sched/fair: Remove unused parameters

On Sat, 10 Feb 2024 at 12:36, <alexs@...nel.org> wrote:
>
> From: Alex Shi <alexs@...nel.org>
>
> The argument sds is not used in function sched_asym(). Remove it.
>
> Fixes: c9ca07886aaa ("sched/fair: Do not even the number of busy CPUs via asym_packing")
> Signed-off-by: Alex Shi <alexs@...nel.org>
> Cc: Valentin Schneider <vschneid@...hat.com>
> Cc: Vincent Guittot <vincent.guittot@...aro.org>
> Cc: Juri Lelli <juri.lelli@...hat.com>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Ingo Molnar <mingo@...hat.com>
> Reviewed-by: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
> Reviewed-by: Valentin Schneider <vschneid@...hat.com>

Reviewed-by: Vincent Guittot <vincent.guittot@...aro.org>

> ---
>  kernel/sched/fair.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> index 533547e3c90a..607dc310b355 100644
> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -9749,7 +9749,6 @@ static bool sched_use_asym_prio(struct sched_domain *sd, int cpu)
>  /**
>   * sched_asym - Check if the destination CPU can do asym_packing load balance
>   * @env:       The load balancing environment
> - * @sds:       Load-balancing data with statistics of the local group
>   * @sgs:       Load-balancing statistics of the candidate busiest group
>   * @group:     The candidate busiest group
>   *
> @@ -9768,8 +9767,7 @@ static bool sched_use_asym_prio(struct sched_domain *sd, int cpu)
>   * otherwise.
>   */
>  static inline bool
> -sched_asym(struct lb_env *env, struct sd_lb_stats *sds,  struct sg_lb_stats *sgs,
> -          struct sched_group *group)
> +sched_asym(struct lb_env *env, struct sg_lb_stats *sgs, struct sched_group *group)
>  {
>         /* Ensure that the whole local core is idle, if applicable. */
>         if (!sched_use_asym_prio(env->sd, env->dst_cpu))
> @@ -9940,7 +9938,7 @@ static inline void update_sg_lb_stats(struct lb_env *env,
>         /* Check if dst CPU is idle and preferred to this group */
>         if (!local_group && env->sd->flags & SD_ASYM_PACKING &&
>             env->idle != CPU_NOT_IDLE && sgs->sum_h_nr_running &&
> -           sched_asym(env, sds, sgs, group)) {
> +           sched_asym(env, sgs, group)) {
>                 sgs->group_asym_packing = 1;
>         }
>
> --
> 2.43.0
>