linux-kernel - [PATCH] binder: Remove unused binder lock events

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Message-ID: <20250612093408.3b7320fa@batman.local.home>
Date: Thu, 12 Jun 2025 09:34:08 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: LKML <linux-kernel@...r.kernel.org>, Linux trace kernel
 <linux-trace-kernel@...r.kernel.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, Greg Kroah-Hartman
 <gregkh@...uxfoundation.org>, "Arve Hjønnevåg"
 <arve@...roid.com>, Todd Kjos <tkjos@...roid.com>, Martijn Coenen
 <maco@...roid.com>, Joel Fernandes <joelagnelf@...dia.com>, Christian
 Brauner <brauner@...nel.org>, Carlos Llamas <cmllamas@...gle.com>, Suren
 Baghdasaryan <surenb@...gle.com>
Subject: [PATCH] binder: Remove unused binder lock events

From: Steven Rostedt <rostedt@...dmis.org>

Trace events can take up to 5K each when they are defined, regardless if
they are used or not. The binder lock events: binder_lock, binder_locked
and binder_unlock are no longer used.

Remove them.

Fixes: a60b890f607d ("binder: remove global binder lock")
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
Note, I will be adding code soon that will make unused events cause a warning.

 drivers/android/binder_trace.h | 21 ---------------------
 1 file changed, 21 deletions(-)

diff --git a/drivers/android/binder_trace.h b/drivers/android/binder_trace.h
index 16de1b9e72f7..97a78e5623db 100644
--- a/drivers/android/binder_trace.h
+++ b/drivers/android/binder_trace.h
@@ -34,27 +34,6 @@ TRACE_EVENT(binder_ioctl,
 	TP_printk("cmd=0x%x arg=0x%lx", __entry->cmd, __entry->arg)
 );
 
-DECLARE_EVENT_CLASS(binder_lock_class,
-	TP_PROTO(const char *tag),
-	TP_ARGS(tag),
-	TP_STRUCT__entry(
-		__field(const char *, tag)
-	),
-	TP_fast_assign(
-		__entry->tag = tag;
-	),
-	TP_printk("tag=%s", __entry->tag)
-);
-
-#define DEFINE_BINDER_LOCK_EVENT(name)	\
-DEFINE_EVENT(binder_lock_class, name,	\
-	TP_PROTO(const char *func), \
-	TP_ARGS(func))
-
-DEFINE_BINDER_LOCK_EVENT(binder_lock);
-DEFINE_BINDER_LOCK_EVENT(binder_locked);
-DEFINE_BINDER_LOCK_EVENT(binder_unlock);
-
 DECLARE_EVENT_CLASS(binder_function_return_class,
 	TP_PROTO(int ret),
 	TP_ARGS(ret),
-- 
2.47.2