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DateSun, 21 Feb 2010 22:24:12 +0800
FromDave Young <>
Subject[PATCH -mm 09/17] sysctl extern cleanup - rcu
Extern declarations in sysctl.c should be move to their own head file,
and then include them in relavant .c files.

Move rcutorture_runnable extern declaration to linux/rcupdate.h

Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Acked-by: Josh Triplett <josh@joshtriplett.org>
---
include/linux/rcupdate.h | 4 ++++
kernel/sysctl.c | 3 ---
2 files changed, 4 insertions(+), 3 deletions(-)
--- linux-2.6.32.orig/include/linux/rcupdate.h 2010-02-21 09:35:58.013190490 +0800
+++ linux-2.6.32/include/linux/rcupdate.h 2010-02-21 10:03:53.296358225 +0800
@@ -41,6 +41,10 @@
#include <linux/lockdep.h>
#include <linux/completion.h>

+#ifdef CONFIG_RCU_TORTURE_TEST
+extern int rcutorture_runnable; /* for sysctl */
+#endif /* #ifdef CONFIG_RCU_TORTURE_TEST */
+
/**
* struct rcu_head - callback structure for use with RCU
* @next: next update requests in a list
--- linux-2.6.32.orig/kernel/sysctl.c 2010-02-21 09:58:40.029722800 +0800
+++ linux-2.6.32/kernel/sysctl.c 2010-02-21 10:01:30.257204779 +0800
@@ -75,9 +75,6 @@

/* External variables not in a header file. */
extern int max_threads;
-#ifdef CONFIG_RCU_TORTURE_TEST
-extern int rcutorture_runnable;
-#endif /* #ifdef CONFIG_RCU_TORTURE_TEST */
#ifdef CONFIG_BLOCK
extern int blk_iopoll_enabled;
#endif

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