[PATCH] arch/x86/kernel/process.c: avoid unnecessary NULL check in get_wchan

Yafang Shao
2018-11-21T11:12:59Z

Because the task p is always guaranteed to be non-NULL.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
---
arch/x86/kernel/process.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index c93fcfd..3c3ee89 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -730,7 +730,7 @@ unsigned long get_wchan(struct task_struct *p)
unsigned long start, bottom, top, sp, fp, ip, ret = 0;
int count = 0;

- if (!p || p == current || p->state == TASK_RUNNING)
+ if (p == current || p->state == TASK_RUNNING)
return 0;

if (!try_get_task_stack(p))
--
1.8.3.1