linux-kernel - [for-next][PATCH 4/6] ftrace: Remove unused pointer ftrace_swapper

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Message-Id: <20180809210654.989635876@goodmis.org>
Date:   Thu, 09 Aug 2018 17:03:37 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     linux-kernel@...r.kernel.org
Cc:     Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        joel@...lfernandes.org, Colin Ian King <colin.king@...onical.com>
Subject: [for-next][PATCH 4/6] ftrace: Remove unused pointer ftrace_swapper_pid

From: Colin Ian King <colin.king@...onical.com>

Pointer ftrace_swapper_pid is defined but is never used hence it is
redundant and can be removed. The use of this variable was removed
in commit 345ddcc882d8 ("ftrace: Have set_ftrace_pid use the bitmap
like events do").

Cleans up clang warning:
warning: 'ftrace_swapper_pid' defined but not used [-Wunused-const-variable=]

Link: http://lkml.kernel.org/r/20180809125609.13142-1-colin.king@canonical.com

Signed-off-by: Colin Ian King <colin.king@...onical.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
---
 kernel/trace/ftrace.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 2d795193024b..48b5b466ec7a 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1020,8 +1020,6 @@ static __init void ftrace_profile_tracefs(struct dentry *d_tracer)
 }
 #endif /* CONFIG_FUNCTION_PROFILER */
 
-static struct pid * const ftrace_swapper_pid = &init_struct_pid;
-
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
 static int ftrace_graph_active;
 #else
-- 
2.18.0