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authorWen Yang <wenyang.linux@foxmail.com>2023-05-05 00:12:53 +0800
committerThomas Gleixner <tglx@linutronix.de>2023-06-18 22:41:53 +0200
commita7e282c77785c7eabf98836431b1f029481085ad (patch)
treeaeada0a31cb0331d651baa1ad21b00eeb46da462 /kernel/time/tick-sched.c
parentfc4b4d96f793c827a5abf23df3e793592dbd38ce (diff)
tick/rcu: Fix bogus ratelimit condition
The ratelimit logic in report_idle_softirq() is broken because the exit condition is always true: static int ratelimit; if (ratelimit < 10) return false; ---> always returns here ratelimit++; ---> no chance to run Make it check for >= 10 instead. Fixes: 0345691b24c0 ("tick/rcu: Stop allowing RCU_SOFTIRQ in idle") Signed-off-by: Wen Yang <wenyang.linux@foxmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/tencent_5AAA3EEAB42095C9B7740BE62FBF9A67E007@qq.com
Diffstat (limited to 'kernel/time/tick-sched.c')
-rw-r--r--kernel/time/tick-sched.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 52254679ec48..89055050d1ac 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -1030,7 +1030,7 @@ static bool report_idle_softirq(void)
return false;
}
- if (ratelimit < 10)
+ if (ratelimit >= 10)
return false;
/* On RT, softirqs handling may be waiting on some lock */