Commit 8e10f6b8 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Peter Zijlstra
Browse files

hrtimer: Add hrtimer_rearm tracepoint 



Analyzing the reprogramming of the clock event device is essential to debug
the behaviour of the hrtimer subsystem especially with the upcoming
deferred rearming scheme.

Signed-off-by: default avatarThomas Gleixner <tglx@kernel.org>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260224163430.803669745@kernel.org
parent 85a690d1

include/trace/events/timer.h

+24 −0
Original line number Diff line number Diff line
@@ -324,6 +324,30 @@ DEFINE_EVENT(hrtimer_class, hrtimer_cancel, 
	TP_ARGS(hrtimer)

);



/**

 * hrtimer_rearm - Invoked when the clockevent device is rearmed

 * @next_event:	The next expiry time (CLOCK_MONOTONIC)

 */

TRACE_EVENT(hrtimer_rearm,



	TP_PROTO(ktime_t next_event, bool deferred),



	TP_ARGS(next_event, deferred),



	TP_STRUCT__entry(

		__field( s64,		next_event	)

		__field( bool,		deferred	)

	),



	TP_fast_assign(

		__entry->next_event	= next_event;

		__entry->deferred	= deferred;

	),



	TP_printk("next_event=%llu deferred=%d",

		  (unsigned long long) __entry->next_event, __entry->deferred)

);



/**

 * itimer_state - called when itimer is started or canceled

 * @which:	name of the interval timer