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KAGA-KOKOPeter Zijlstra
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hrtimer: Fix trace oddity
It turns out that __run_hrtimer() will trace like: <idle>-0 [032] d.h2. 20705.474563: hrtimer_cancel: hrtimer=0xff2db8f77f8226e8 <idle>-0 [032] d.h1. 20705.474563: hrtimer_expire_entry: hrtimer=0xff2db8f77f8226e8 now=20699452001850 function=tick_nohz_handler/0x0 Which is a bit nonsensical, the timer doesn't get canceled on expiration. The cause is the use of the incorrect debug helper. Fixes: c6a2a17 ("hrtimer: Add tracepoint for hrtimers") Reported-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20260121143208.219595606@infradead.org
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kernel/time/hrtimer.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1742,7 +1742,7 @@ static void __run_hrtimer(struct hrtimer_cpu_base *cpu_base,
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lockdep_assert_held(&cpu_base->lock);
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debug_deactivate(timer);
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debug_hrtimer_deactivate(timer);
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base->running = timer;
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/*

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