kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/kernel/time/timer.c
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@@ -1293,7 +1293,7 @@
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 	u32 tf;
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 	tf = READ_ONCE(timer->flags);
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-	if (!(tf & (TIMER_MIGRATING | TIMER_IRQSAFE))) {
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+	if (!(tf & TIMER_MIGRATING)) {
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 		struct timer_base *base = get_timer_base(tf);
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 		/*
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@@ -1376,13 +1376,6 @@
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 	 * could lead to deadlock.
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 	 */
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 	WARN_ON(in_irq() && !(timer->flags & TIMER_IRQSAFE));
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-
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-	/*
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-	 * Must be able to sleep on PREEMPT_RT because of the slowpath in
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-	 * del_timer_wait_running().
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-	 */
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-	if (IS_ENABLED(CONFIG_PREEMPT_RT) && !(timer->flags & TIMER_IRQSAFE))
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-		lockdep_assert_preemption_enabled();
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 	do {
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 		ret = try_to_del_timer_sync(timer);