Re: [PATCH] sched: replace if (cond) BUG() with BUG_ON()

From: Ingo Molnar
Date: Wed Mar 17 2021 - 04:40:30 EST



* Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx> wrote:

> Fix the following coccicheck warnings:
>
> ./kernel/sched/core.c:8039:2-5: WARNING: Use BUG_ON instead of if
> condition followed by BUG.
>
> Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
> Signed-off-by: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx>
> ---
> kernel/sched/core.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index 9819121..7392bc0 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -8035,8 +8035,7 @@ void __init sched_init_smp(void)
> mutex_unlock(&sched_domains_mutex);
>
> /* Move init over to a non-isolated CPU */
> - if (set_cpus_allowed_ptr(current, housekeeping_cpumask(HK_FLAG_DOMAIN)) < 0)
> - BUG();
> + BUG(set_cpus_allowed_ptr(current, housekeeping_cpumask(HK_FLAG_DOMAIN)) < 0);

The patch doesn't quite do what the title & changelog claims...

Thanks,

Ingo