linux-kernel - [PATCH v2] function_graph: remove unnecessary initialization in ftrace_graph_ret

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Message-ID: <20240916175818.GA28944@redhat.com>
Date: Mon, 16 Sep 2024 19:58:19 +0200
From: Oleg Nesterov <oleg@...hat.com>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
	Puranjay Mohan <puranjay@...nel.org>, linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org
Subject: [PATCH v2] function_graph: remove unnecessary initialization in
 ftrace_graph_ret_addr()

After the commit 29c1c24a2707 ("function_graph: Fix up ftrace_graph_ret_addr()")
ftrace_graph_ret_addr() doesn't need to initialize "int i" at the start.

Signed-off-by: Oleg Nesterov <oleg@...hat.com>
---
 kernel/trace/fgraph.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/fgraph.c b/kernel/trace/fgraph.c
index d7d4fb403f6f..45c02bf18304 100644
--- a/kernel/trace/fgraph.c
+++ b/kernel/trace/fgraph.c
@@ -892,7 +892,7 @@ unsigned long ftrace_graph_ret_addr(struct task_struct *task, int *idx,
 {
 	struct ftrace_ret_stack *ret_stack;
 	unsigned long return_handler = (unsigned long)dereference_kernel_function_descriptor(return_to_handler);
-	int i = task->curr_ret_stack;
+	int i;
 
 	if (ret != return_handler)
 		return ret;
-- 
2.25.1.362.g51ebf55