[PATCH 2/4] workqueue: use BUILD_BUG_ON() for compile time test instead of WARN_ON()

From: Lai Jiangshan
Date: Mon Jun 01 2020 - 04:45:01 EST


Any runtime WARN_ON() has to be fixed, and BUILD_BUG_ON() can
help you nitice it earlier.

Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxxxxx>
---
kernel/workqueue.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 7a1fc9fe6314..35120b909234 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -5905,7 +5905,7 @@ void __init workqueue_init_early(void)
int hk_flags = HK_FLAG_DOMAIN | HK_FLAG_WQ;
int i, cpu;

- WARN_ON(__alignof__(struct pool_workqueue) < __alignof__(long long));
+ BUILD_BUG_ON(__alignof__(struct pool_workqueue) < __alignof__(long long));

BUG_ON(!alloc_cpumask_var(&wq_unbound_cpumask, GFP_KERNEL));
cpumask_copy(wq_unbound_cpumask, housekeeping_cpumask(hk_flags));
--
2.20.1