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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 30 Jun 2020 11:45:14 +0200
Subject: [PATCH] x86/entry: Use should_resched() in
idtentry_exit_cond_resched()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.8-rt24.tar.xz
The TIF_NEED_RESCHED bit is inlined on x86 into the preemption counter.
By using should_resched(0) instead of need_resched() the same check can
be performed which uses the same variable as 'preempt_count()` which was
issued before.
Use should_resched(0) instead need_resched().
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
kernel/entry/common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/entry/common.c
+++ b/kernel/entry/common.c
@@ -363,7 +363,7 @@ void irqentry_exit_cond_resched(void)
rcu_irq_exit_check_preempt();
if (IS_ENABLED(CONFIG_DEBUG_ENTRY))
WARN_ON_ONCE(!on_thread_stack());
- if (need_resched())
+ if (should_resched(0))
preempt_schedule_irq();
}
}
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