[PATCH v4 25/25] tracing/rseq: Add mm_vcpu_id field to rseq_update
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: 2022-09-22 11:10:28
Also in:
lkml
Subsystem:
restartable sequences support, the rest, tracing · Maintainers:
Mathieu Desnoyers, Peter Zijlstra, "Paul E. McKenney", Boqun Feng, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
Add the mm_vcpu_id field to the rseq_update event, allowing tracers to follow which vcpu_id is observed by user-space, and whether negative vcpu_id values are visible in case of internal scheduler implementation issues. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> --- include/trace/events/rseq.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/trace/events/rseq.h b/include/trace/events/rseq.h
index 6bd442697354..10b236fc047a 100644
--- a/include/trace/events/rseq.h
+++ b/include/trace/events/rseq.h@@ -17,14 +17,17 @@ TRACE_EVENT(rseq_update, TP_STRUCT__entry( __field(s32, cpu_id) __field(s32, node_id) + __field(s32, mm_vcpu_id) ), TP_fast_assign( __entry->cpu_id = raw_smp_processor_id(); __entry->node_id = cpu_to_node(raw_smp_processor_id()); + __entry->mm_vcpu_id = t->mm_vcpu; ), - TP_printk("cpu_id=%d node_id=%d", __entry->cpu_id, __entry->node_id) + TP_printk("cpu_id=%d node_id=%d mm_vcpu_id=%d", __entry->cpu_id, + __entry->node_id, __entry->mm_vcpu_id) ); TRACE_EVENT(rseq_ip_fixup,
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2.25.1