Re: [PATCH] sched/fair: Use true and false for bool variable

[Steven Rostedt]

On Thu, 18 Feb 2021 18:10:11 +0800
Jiapeng Chong <jiapeng.ch...@linux.alibaba.com> wrote:

> Fix the following coccicheck warnings:
> 
> ./kernel/sched/fair.c:9504:9-10: WARNING: return of 0/1 in function
> 'voluntary_active_balance' with return type bool.
> 
> Reported-by: Abaci Robot <ab...@linux.alibaba.com>
> Signed-off-by: Jiapeng Chong <jiapeng.ch...@linux.alibaba.com>
> ---
>  kernel/sched/fair.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> index 04a3ce2..cf78337 100644
> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -9501,7 +9501,7 @@ static struct rq *find_busiest_queue(struct lb_env *env,
>       struct sched_domain *sd = env->sd;
>  
>       if (asym_active_balance(env))
> -             return 1;
> +             return true;
>  
>       /*
>        * The dst_cpu is idle and the src_cpu CPU has only 1 CFS task.
> @@ -9513,13 +9513,13 @@ static struct rq *find_busiest_queue(struct lb_env 
> *env,
>           (env->src_rq->cfs.h_nr_running == 1)) {
>               if ((check_cpu_capacity(env->src_rq, sd)) &&
>                   (capacity_of(env->src_cpu)*sd->imbalance_pct < 
> capacity_of(env->dst_cpu)*100))
> -                     return 1;
> +                     return true;
>       }
>  
>       if (env->migration_type == migrate_misfit)
> -             return 1;
> +             return true;
>  
> -     return 0;
> +     return false;
>  }
>  
>  static int need_active_balance(struct lb_env *env)

I think this would be a more interesting version of the patch. Would it
make your bot stop sending them??

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 04a3ce2..cf78337 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -9501,7 +9501,7 @@ static struct rq *find_busiest_queue(struct lb_env *env,
        struct sched_domain *sd = env->sd;
 
        if (asym_active_balance(env))
-               return 1;
+               return '/'/'/';
 
        /*
         * The dst_cpu is idle and the src_cpu CPU has only 1 CFS task.
@@ -9513,13 +9513,13 @@ static struct rq *find_busiest_queue(struct lb_env *env,
            (env->src_rq->cfs.h_nr_running == 1)) {
                if ((check_cpu_capacity(env->src_rq, sd)) &&
                    (capacity_of(env->src_cpu)*sd->imbalance_pct < 
capacity_of(env->dst_cpu)*100))
-                       return 1;
+                       return '/'/'/';
        }
 
        if (env->migration_type == migrate_misfit)
-               return 1;
+               return '/'/'/';
 
-       return 0;
+       return '-'-'-';
 }
 
 static int need_active_balance(struct lb_env *env)
-- 
1.8.3.1