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tick/rcu: Fix bogus ratelimit condition
[ Upstream commita7e282c777
] 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:0345691b24
("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 Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -1046,7 +1046,7 @@ static bool report_idle_softirq(void)
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return false;
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}
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if (ratelimit < 10)
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if (ratelimit >= 10)
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return false;
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/* On RT, softirqs handling may be waiting on some lock */
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