Thread (3 messages) flat view 3 messages, 2 authors, 2025-01-31
STALE597d

[PATCH] irq/tracing: Add IRQ name to irq_handler_exit tracepoint

From: Wander Lairson Costa <hidden>
Date: 2025-01-30 18:15:27
Also in: lkml
Subsystem: the rest, tracing · Maintainers: Linus Torvalds, Steven Rostedt, Masami Hiramatsu

The irq_handler_entry tracepoint includes a "name" field, which allows
for easy identification and filtering of specific IRQs. However, the
irq_handler_exit tracepoint lacks this field, making it difficult to
pair corresponding entry and exit events for analysis.

Add the "name" field to irq_handler_exit to enable consistent tracking
and correlation of IRQ entry and exit events.

Signed-off-by: Wander Lairson Costa <redacted>
---
 include/trace/events/irq.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/trace/events/irq.h b/include/trace/events/irq.h
index 837c1740d0d0..d705406daa37 100644
--- a/include/trace/events/irq.h
+++ b/include/trace/events/irq.h
@@ -88,16 +88,18 @@ TRACE_EVENT(irq_handler_exit,
 
 	TP_STRUCT__entry(
 		__field(	int,	irq	)
+		__string(	name,	action->name	)
 		__field(	int,	ret	)
 	),
 
 	TP_fast_assign(
 		__entry->irq	= irq;
+		__assign_str(name);
 		__entry->ret	= ret;
 	),
 
-	TP_printk("irq=%d ret=%s",
-		  __entry->irq, __entry->ret ? "handled" : "unhandled")
+	TP_printk("irq=%d name=%s ret=%s",
+		  __entry->irq, __get_str(name), __entry->ret ? "handled" : "unhandled")
 );
 
 DECLARE_EVENT_CLASS(softirq,
-- 
2.48.1
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