linux-kernel - [PATCH] jump_label: don't export section tags

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Date:   Fri, 10 Feb 2017 19:29:44 +0200
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Jason Baron <jbaron@...mai.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Borislav Petkov <bp@...en8.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Mel Gorman <mgorman@...e.de>, Ingo Molnar <mingo@...nel.org>
Subject: [PATCH] jump_label: don't export section tags

These are supplied by the linker and only used by jump_label.c.
This trivial patch moves them out of jump_label.h.

Cc: Jason Baron <jbaron@...mai.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Mel Gorman <mgorman@...e.de>
Cc: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 include/linux/jump_label.h | 3 ---
 kernel/jump_label.c        | 4 ++++
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h
index 48ed83f..21701da 100644
--- a/include/linux/jump_label.h
+++ b/include/linux/jump_label.h
@@ -132,9 +132,6 @@ static __always_inline bool static_key_true(struct static_key *key)
 	return !arch_static_branch(key, true);
 }
 
-extern const struct jump_entry __start___jump_table[];
-extern const struct jump_entry __stop___jump_table[];
-
 extern void jump_label_init(void);
 extern void jump_label_lock(void);
 extern void jump_label_unlock(void);
diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index a9b8cf5..6eaa84c 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -18,6 +18,10 @@
 
 #ifdef HAVE_JUMP_LABEL
 
+/* Supplied by a linker script */
+extern struct jump_entry __start___jump_table[];
+extern struct jump_entry __stop___jump_table[];
+
 /* mutex to protect coming/going of the the jump_label table */
 static DEFINE_MUTEX(jump_label_mutex);
 
-- 
MST