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From: Dave Young on 20 Feb 2010 09:10
Extern declarations in sysctl.c should be move to their own head file,
and then include them in relavant .c files.

Move C_A_D extern variable declaration to linux/reboot.h

Signed-off-by: Dave Young <hidave.darkstar(a)gmail.com>
---
include/linux/reboot.h | 3 +++
kernel/sysctl.c | 1 -
2 files changed, 3 insertions(+), 1 deletion(-)

--- linux-2.6.32.orig/include/linux/reboot.h 2010-02-20 14:02:29.541591107 +0800
+++ linux-2.6.32/include/linux/reboot.h 2010-02-20 14:04:53.261578954 +0800
@@ -64,6 +64,9 @@ extern void kernel_restart(char *cmd);
extern void kernel_halt(void);
extern void kernel_power_off(void);

+#ifdef CONFIG_SYSCTL
+extern int C_A_D;
+#endif
void ctrl_alt_del(void);

#define POWEROFF_CMD_PATH_LEN 256
--- linux-2.6.32.orig/kernel/sysctl.c 2010-02-20 14:02:29.528258054 +0800
+++ linux-2.6.32/kernel/sysctl.c 2010-02-20 14:03:41.452418032 +0800
@@ -68,7 +68,6 @@
#if defined(CONFIG_SYSCTL)

/* External variables not in a header file. */
-extern int C_A_D;
extern int print_fatal_signals;
extern int max_threads;
extern int core_uses_pid;
--
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