[for-next][PATCH 1/3] cpuidle: haltpoll: Only define guest_halt_poll_ns tracepoint when used

[Steven Rostedt]

From: Steven Rostedt <rostedt@xxxxxxxxxxx>

Tracepoints that are defined take up around 5K each, even if they are not
used. When a tracepoint is used only in code when a specific config is
enabled, their definition must also be only defined when the same config
is enabled otherwise it wastes memory.

The tracepoint guest_halt_poll_ns is only used when CONFIG_CPU_IDLE_GOV_HALTPOLL
is enabled. Guard the definition of that tracepoint with the same config.

Link: https://patch.msgid.link/20261022153359.2433474b@xxxxxxxxxxxxxxxxxx
Fixes: 0da11bf0cab90 ("cpuidle: haltpoll: Add trace points for guest_halt_poll_ns grow/shrink")
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
 include/trace/events/power.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/trace/events/power.h b/include/trace/events/power.h
index 370f8df2fdb4..4d17eb307b6a 100644
--- a/include/trace/events/power.h
+++ b/include/trace/events/power.h
@@ -497,6 +497,7 @@ DEFINE_EVENT(dev_pm_qos_request, dev_pm_qos_remove_request,
 	TP_ARGS(name, type, new_value)
 );
 
+#ifdef CONFIG_CPU_IDLE_GOV_HALTPOLL
 TRACE_EVENT(guest_halt_poll_ns,
 
 	TP_PROTO(bool grow, unsigned int new, unsigned int old),
@@ -525,6 +526,8 @@ TRACE_EVENT(guest_halt_poll_ns,
 	trace_guest_halt_poll_ns(true, new, old)
 #define trace_guest_halt_poll_ns_shrink(new, old) \
 	trace_guest_halt_poll_ns(false, new, old)
+#endif /* CONFIG_CPU_IDLE_GOV_HALTPOLL */
+
 #endif /* _TRACE_POWER_H */
 
 /* This part must be outside protection */
-- 
2.53.0