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

[Christophe Leroy <christophe.leroy@csgroup.eu>]

Le 17/03/2021 à 07:45, Jiapeng Chong a écrit :
> Fix the following coccicheck warnings:
> 
> ./arch/powerpc/platforms/cell/spufs/sched.c:908:2-5: WARNING: Use BUG_ON
> instead of if condition followed by BUG.

Consider using WARN_ON() instead of BUG_ON() if relevant. If not, explain in the commit message why 
we need to keep a BUG_ON().

See https://www.kernel.org/doc/html/latest/process/deprecated.html#bug-and-bug-on


> 
> Reported-by: Abaci Robot <abaci@linux.alibaba.com>
> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
> ---
>   arch/powerpc/platforms/cell/spufs/sched.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
> index 3692064..139a6ec 100644
> --- a/arch/powerpc/platforms/cell/spufs/sched.c
> +++ b/arch/powerpc/platforms/cell/spufs/sched.c
> @@ -904,8 +904,7 @@ static noinline void spusched_tick(struct spu_context *ctx)
>   	struct spu_context *new = NULL;
>   	struct spu *spu = NULL;
>   
> -	if (spu_acquire(ctx))
> -		BUG();	/* a kernel thread never has signals pending */
> +	BUG_ON(spu_acquire(ctx));	/* a kernel thread never has signals pending */
>   
>   	if (ctx->state != SPU_STATE_RUNNABLE)
>   		goto out;
>