diff options
| author | Wen Yang <wenyang.linux@foxmail.com> | 2023-05-04 19:12:53 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2023-06-18 23:41:53 +0300 |
| commit | a7e282c77785c7eabf98836431b1f029481085ad (patch) | |
| tree | aeada0a31cb0331d651baa1ad21b00eeb46da462 /kernel | |
| parent | fc4b4d96f793c827a5abf23df3e793592dbd38ce (diff) | |
| download | linux-a7e282c77785c7eabf98836431b1f029481085ad.tar.xz | |
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')
| -rw-r--r-- | kernel/time/tick-sched.c | 2 |
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 */ |