Commit 14a8644d authored by Mathieu Desnoyers's avatar Mathieu Desnoyers Committed by Peter Zijlstra
Browse files

tracing/rseq: Add mm_cid field to rseq_update 



Add the mm_cid field to the rseq_update event, allowing tracers to
follow which mm_cid is observed by user-space, and whether negative
mm_cid values are visible in case of internal scheduler implementation
issues.

Signed-off-by: default avatarMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221122203932.231377-22-mathieu.desnoyers@efficios.com
parent a3798e6f

include/trace/events/rseq.h

+4 −1
Original line number Diff line number Diff line
@@ -17,14 +17,17 @@ TRACE_EVENT(rseq_update, 
	TP_STRUCT__entry(

		__field(s32, cpu_id)

		__field(s32, node_id)

		__field(s32, mm_cid)

	),



	TP_fast_assign(

		__entry->cpu_id = raw_smp_processor_id();

		__entry->node_id = cpu_to_node(__entry->cpu_id);

		__entry->mm_cid = task_mm_cid(t);

	),



	TP_printk("cpu_id=%d node_id=%d", __entry->cpu_id, __entry->node_id)

	TP_printk("cpu_id=%d node_id=%d mm_cid=%d", __entry->cpu_id,

		  __entry->node_id, __entry->mm_cid)

);



TRACE_EVENT(rseq_ip_fixup,