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sched/debug: Avoid checking in_atomic_preempt_off() twice in schedule_debug()

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in_atomic_preempt_off() already gets called in schedule_debug() once,
which is the only caller of __schedule_bug().

Skip the second call within __schedule_bug(), it should always be true
at this point.

[ mingo: Clarified the changelog. ]

Signed-off-by: Liming Wu <liming.wu@jaguarmicro.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230825023501.1848-1-liming.wu@jaguarmicro.com
This commit is contained in:
Liming Wu
2023-08-25 10:35:00 +08:00
committed by Ingo Molnar
parent 8bf0cdfac7
commit dc461c48de
1 changed files with 1 additions and 2 deletions
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3
kernel/sched/core.c
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@@ -5899,8 +5899,7 @@ static noinline void __schedule_bug(struct task_struct *prev)
print_modules();
if (irqs_disabled())
print_irqtrace_events(prev);
if (IS_ENABLED(CONFIG_DEBUG_PREEMPT)
&& in_atomic_preempt_off()) {
if (IS_ENABLED(CONFIG_DEBUG_PREEMPT)) {
pr_err("Preemption disabled at:");
print_ip_sym(KERN_ERR, preempt_disable_ip);
}