linux-kernel - [for-next][PATCH 1/3] function_graph: Remove the unused variable func

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Message-ID: <20250324211837.171611564@goodmis.org>
Date: Mon, 24 Mar 2025 17:18:22 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: linux-kernel@...r.kernel.org
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
 Mark Rutland <mark.rutland@....com>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Abaci Robot <abaci@...ux.alibaba.com>,
 Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
Subject: [for-next][PATCH 1/3] function_graph: Remove the unused variable func

From: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>

Variable func is not effectively used, so delete it.

kernel/trace/trace_functions_graph.c:925:16: warning: variable ‘func’ set but not used.

This happened because the variable "func" which came from "call->func" was
replaced by "ret_func" coming from "graph_ret->func" but "func" wasn't
removed after the replacement.

Link: https://lore.kernel.org/20250307021412.119107-1-jiapeng.chong@linux.alibaba.com
Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=19250
Fixes: ff5c9c576e754 ("ftrace: Add support for function argument to graph tracer")
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
 kernel/trace/trace_functions_graph.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 71b2fb068b6b..ed61ff719aa4 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -922,7 +922,6 @@ print_graph_entry_leaf(struct trace_iterator *iter,
 	struct ftrace_graph_ent *call;
 	unsigned long long duration;
 	unsigned long ret_func;
-	unsigned long func;
 	int args_size;
 	int cpu = iter->cpu;
 	int i;
@@ -933,8 +932,6 @@ print_graph_entry_leaf(struct trace_iterator *iter,
 	call = &entry->graph_ent;
 	duration = ret_entry->rettime - ret_entry->calltime;
 
-	func = call->func + iter->tr->text_delta;
-
 	if (data) {
 		struct fgraph_cpu_data *cpu_data;
 
-- 
2.47.2