Commit 56eb0598 authored by Valentin Schneider's avatar Valentin Schneider Committed by Peter Zijlstra
Browse files

trace: Add trace_ipi_send_cpumask() 



trace_ipi_raise() is unsuitable for generically tracing IPI sources due to
its "reason" argument being an uninformative string (on arm64 all you get
is "Function call interrupts" for SMP calls).

Add a variant of it that exports a target cpumask, a callsite and a callback.

Signed-off-by: default avatarValentin Schneider <vschneid@redhat.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20230307143558.294354-2-vschneid@redhat.com
parent 203e4358

include/trace/events/ipi.h

+22 −0
Original line number Diff line number Diff line
@@ -35,6 +35,28 @@ TRACE_EVENT(ipi_raise, 
	TP_printk("target_mask=%s (%s)", __get_bitmask(target_cpus), __entry->reason)

);



TRACE_EVENT(ipi_send_cpumask,



	TP_PROTO(const struct cpumask *cpumask, unsigned long callsite, void *callback),



	TP_ARGS(cpumask, callsite, callback),



	TP_STRUCT__entry(

		__cpumask(cpumask)

		__field(void *, callsite)

		__field(void *, callback)

	),



	TP_fast_assign(

		__assign_cpumask(cpumask, cpumask_bits(cpumask));

		__entry->callsite = (void *)callsite;

		__entry->callback = callback;

	),



	TP_printk("cpumask=%s callsite=%pS callback=%pS",

		  __get_cpumask(cpumask), __entry->callsite, __entry->callback)

);



DECLARE_EVENT_CLASS(ipi_handler,



	TP_PROTO(const char *reason),