From: Steven Rostedt <rostedt@goodmis.org>
Date: Mon, 5 May 2025 21:21:17 +0000 (-0400)
Subject: tracing: Remove unused buffer_page field from trace_array_cpu structure
X-Git-Tag: v6.16-rc1~121^2~11
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=6e3b3acaf452ecbd0bde5f25e05c844a22a86574;p=linux-block.git

tracing: Remove unused buffer_page field from trace_array_cpu structure

The trace_array_cpu had a "buffer_page" field that was originally going to
be used as a backup page for the ring buffer. But the ring buffer has its
own way of reusing pages and this field was never used.

Remove it.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/20250505212236.738849456@goodmis.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 188032d4ab69..4e67ee92e05c 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -184,7 +184,6 @@ struct trace_array;
  */
 struct trace_array_cpu {
 	local_t			disabled;
-	void			*buffer_page;	/* ring buffer spare */
 
 	unsigned long		entries;
 	unsigned long		saved_latency;