[PATCH 3/9] devfreq: Use trace_call__##name() at guarded tracepoint call sites
From: Steven Rostedt
Date: Tue Oct 27 2026 - 12:06:21 EST
From: Vineeth Pillai <vineeth@xxxxxxxxxxxxxxx>
Replace trace_foo() with the new trace_call__foo() at sites already
guarded by trace_foo_enabled(), avoiding a redundant
static_branch_unlikely() re-evaluation inside the tracepoint.
trace_call__foo() calls the tracepoint callbacks directly without
utilizing the static branch again.
Original v2 series:
https://lore.kernel.org/linux-trace-kernel/20260323160052.17528-1-vineeth@xxxxxxxxxxxxxxx/
Parts of the original v2 series have already been merged in mainline.
This patch is being reposted as a follow-up cleanup for the remaining
unmerged pieces.
Link: https://patch.msgid.link/20260515135920.2238808-1-vineeth@xxxxxxxxxxxxxxx
Suggested-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Suggested-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Signed-off-by: Vineeth Pillai (Google) <vineeth@xxxxxxxxxxxxxxx>
Assisted-by: Claude:claude-sonnet-4-6
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
drivers/devfreq/devfreq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 82dd9a43dc62..9f71d9dc4a70 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -370,7 +370,7 @@ static int devfreq_set_target(struct devfreq *devfreq, unsigned long new_freq,
* change order of between devfreq device and passive devfreq device.
*/
if (trace_devfreq_frequency_enabled() && new_freq != cur_freq)
- trace_devfreq_frequency(devfreq, new_freq, cur_freq);
+ trace_call__devfreq_frequency(devfreq, new_freq, cur_freq);
freqs.new = new_freq;
devfreq_notify_transition(devfreq, &freqs, DEVFREQ_POSTCHANGE);
--
2.53.0