From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
linux-pm@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Andrew Morton <akpm@linux-foundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Viresh Kumar <viresh.kumar@linaro.org>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>
Subject: [PATCH 3/4] PM: tracing: Hide device_pm_callback events under PM_SLEEP
Date: Thu, 12 Jun 2025 10:53:13 -0400 [thread overview]
Message-ID: <20250612145408.246703478@goodmis.org> (raw)
In-Reply-To: 20250612145310.563358597@goodmis.org
From: Steven Rostedt <rostedt@goodmis.org>
The events device_pm_callback_start and device_pm_callback_end events are
only called when CONFIG_PM_SLEEP is defined. As each event can take up to
5K regardless if they are used or not, it's best not to define them when
they are not used. Add #ifdef around these events when they are not used.
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
include/trace/events/power.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/trace/events/power.h b/include/trace/events/power.h
index a10ad300d660..5b1df5e1e092 100644
--- a/include/trace/events/power.h
+++ b/include/trace/events/power.h
@@ -212,6 +212,7 @@ TRACE_EVENT(cpu_frequency_limits,
(unsigned long)__entry->cpu_id)
);
+#ifdef CONFIG_PM_SLEEP
TRACE_EVENT(device_pm_callback_start,
TP_PROTO(struct device *dev, const char *pm_ops, int event),
@@ -260,6 +261,7 @@ TRACE_EVENT(device_pm_callback_end,
TP_printk("%s %s, err=%d",
__get_str(driver), __get_str(device), __entry->error)
);
+#endif
TRACE_EVENT(suspend_resume,
--
2.47.2
next prev parent reply other threads:[~2025-06-12 14:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-12 14:53 [PATCH 0/4] PM: tracing: Don't compile in unused trace events Steven Rostedt
2025-06-12 14:53 ` [PATCH 1/4] PM: cpufreq: powernv/tracing: Move powernv_throttle trace event Steven Rostedt
2025-06-13 3:16 ` Viresh Kumar
2025-06-12 14:53 ` [PATCH 2/4] PM: tracing: Hide psci_domain_idle events under ARM_PSCI_CPUIDLE Steven Rostedt
2025-06-12 14:53 ` Steven Rostedt [this message]
2025-06-12 14:53 ` [PATCH 4/4] PM: tracing: Hide power_domain_target event under ARCH_OMAP2PLUS Steven Rostedt
2025-06-12 18:46 ` [PATCH 0/4] PM: tracing: Don't compile in unused trace events Rafael J. Wysocki
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