linux-kernel - [PATCH] sched: Use WARN

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Message-Id: <20210701125046.43018-1-wangborong@cdjrlc.com>
Date:   Thu,  1 Jul 2021 20:50:46 +0800
From:   Jason Wang <wangborong@...rlc.com>
To:     jk@...abs.org
Cc:     arnd@...db.de, mpe@...erman.id.au, benh@...nel.crashing.org,
        paulus@...ba.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, Jason Wang <wangborong@...rlc.com>
Subject: [PATCH] sched: Use WARN_ON

The BUG_ON macro simplifies the if condition followed by BUG, but it
will lead to the kernel crashing. Therefore, we can try using WARN_ON
instead of if condition followed by BUG.

Signed-off-by: Jason Wang <wangborong@...rlc.com>
---
 arch/powerpc/platforms/cell/spufs/sched.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 369206489895..0f218d9e5733 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -904,8 +904,8 @@ 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 */
+	/* a kernel thread never has signals pending */
+	WARN_ON(spu_acquire(ctx));
 
 	if (ctx->state != SPU_STATE_RUNNABLE)
 		goto out;
-- 
2.32.0