Thread (17 messages) 17 messages, 2 authors, 3h ago

[for-next][PATCH 09/15] HID: Use trace_call__##name() at guarded tracepoint call sites

From: Steven Rostedt <rostedt@kernel.org>
Date: 2026-05-22 14:35:03
Subsystem: hid core layer, intel integrated sensor hub driver, the rest · Maintainers: Jiri Kosina, Benjamin Tissoires, Srinivas Pandruvada, Linus Torvalds

From: Vineeth Pillai <redacted>

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@bitbyteword.org/ (local)

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.

Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Benjamin Tissoires <bentiss@kernel.org>
Link: https://patch.msgid.link/20260515135941.2238861-1-vineeth@bitbyteword.org
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Vineeth Pillai (Google) <redacted>
Assisted-by: Claude:claude-sonnet-4-6
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 drivers/hid/intel-ish-hid/ipc/pci-ish.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/intel-ish-hid/ipc/pci-ish.c b/drivers/hid/intel-ish-hid/ipc/pci-ish.c
index ed3405c05e73..8d36ae96a3ee 100644
--- a/drivers/hid/intel-ish-hid/ipc/pci-ish.c
+++ b/drivers/hid/intel-ish-hid/ipc/pci-ish.c
@@ -110,7 +110,7 @@ void ish_event_tracer(struct ishtp_device *dev, const char *format, ...)
 		vsnprintf(tmp_buf, sizeof(tmp_buf), format, args);
 		va_end(args);
 
-		trace_ishtp_dump(tmp_buf);
+		trace_call__ishtp_dump(tmp_buf);
 	}
 }
 
-- 
2.53.0

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