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authorAmerigo Wang <amwang@redhat.com>2011-07-25 17:13:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-25 20:57:14 -0700
commitc5f41752fd37979dbaec61dc59c7ece0606ddf7e (patch)
tree47827a7fd86cbe4ad657d640b01e8b76535e8813
parentdcfe1421c916345b068f43749263b94270324500 (diff)
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notifiers: sys: move reboot notifiers into reboot.h
It is not necessary to share the same notifier.h. This patch already moves register_reboot_notifier() and unregister_reboot_notifier() from kernel/notifier.c to kernel/sys.c. [amwang@redhat.com: make allyesconfig succeed on ppc64] Signed-off-by: WANG Cong <amwang@redhat.com> Cc: David Miller <davem@davemloft.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Greg KH <greg@kroah.com> Signed-off-by: WANG Cong <amwang@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/powerpc/kernel/rtas.c1
-rw-r--r--arch/powerpc/kernel/rtas_flash.c1
-rw-r--r--include/linux/notifier.h5
-rw-r--r--include/linux/reboot.h5
-rw-r--r--kernel/notifier.c31
-rw-r--r--kernel/sys.c32
6 files changed, 39 insertions, 36 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 271ff6318eda..0e0ea941156f 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -24,6 +24,7 @@
#include <linux/cpumask.h>
#include <linux/memblock.h>
#include <linux/slab.h>
+#include <linux/reboot.h>
#include <asm/prom.h>
#include <asm/rtas.h>
diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c
index bf5f5ce3a7bd..e037c7494fd8 100644
--- a/arch/powerpc/kernel/rtas_flash.c
+++ b/arch/powerpc/kernel/rtas_flash.c
@@ -17,6 +17,7 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
+#include <linux/reboot.h>
#include <asm/delay.h>
#include <asm/uaccess.h>
#include <asm/rtas.h>
diff --git a/include/linux/notifier.h b/include/linux/notifier.h
index e8a858a1d391..145c43658db0 100644
--- a/include/linux/notifier.h
+++ b/include/linux/notifier.h
@@ -189,10 +189,7 @@ static inline int notifier_to_errno(int ret)
/* netdevice notifiers are defined in include/linux/netdevice.h */
-#define SYS_DOWN 0x0001 /* Notify of system down */
-#define SYS_RESTART SYS_DOWN
-#define SYS_HALT 0x0002 /* Notify of system halt */
-#define SYS_POWER_OFF 0x0003 /* Notify of system power off */
+/* reboot notifiers are defined in include/linux/reboot.h. */
#define NETLINK_URELEASE 0x0001 /* Unicast netlink socket released */
diff --git a/include/linux/reboot.h b/include/linux/reboot.h
index 3005d5a7fce5..e0879a70e830 100644
--- a/include/linux/reboot.h
+++ b/include/linux/reboot.h
@@ -39,6 +39,11 @@
#include <linux/notifier.h>
+#define SYS_DOWN 0x0001 /* Notify of system down */
+#define SYS_RESTART SYS_DOWN
+#define SYS_HALT 0x0002 /* Notify of system halt */
+#define SYS_POWER_OFF 0x0003 /* Notify of system power off */
+
extern int register_reboot_notifier(struct notifier_block *);
extern int unregister_reboot_notifier(struct notifier_block *);
diff --git a/kernel/notifier.c b/kernel/notifier.c
index 2488ba7eb568..8d7b435806c9 100644
--- a/kernel/notifier.c
+++ b/kernel/notifier.c
@@ -525,37 +525,6 @@ void srcu_init_notifier_head(struct srcu_notifier_head *nh)
}
EXPORT_SYMBOL_GPL(srcu_init_notifier_head);
-/**
- * register_reboot_notifier - Register function to be called at reboot time
- * @nb: Info about notifier function to be called
- *
- * Registers a function with the list of functions
- * to be called at reboot time.
- *
- * Currently always returns zero, as blocking_notifier_chain_register()
- * always returns zero.
- */
-int register_reboot_notifier(struct notifier_block *nb)
-{
- return blocking_notifier_chain_register(&reboot_notifier_list, nb);
-}
-EXPORT_SYMBOL(register_reboot_notifier);
-
-/**
- * unregister_reboot_notifier - Unregister previously registered reboot notifier
- * @nb: Hook to be unregistered
- *
- * Unregisters a previously registered reboot
- * notifier function.
- *
- * Returns zero on success, or %-ENOENT on failure.
- */
-int unregister_reboot_notifier(struct notifier_block *nb)
-{
- return blocking_notifier_chain_unregister(&reboot_notifier_list, nb);
-}
-EXPORT_SYMBOL(unregister_reboot_notifier);
-
static ATOMIC_NOTIFIER_HEAD(die_chain);
int notrace __kprobes notify_die(enum die_val val, const char *str,
diff --git a/kernel/sys.c b/kernel/sys.c
index e4128b278f23..a101ba36c444 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -8,7 +8,6 @@
#include <linux/mm.h>
#include <linux/utsname.h>
#include <linux/mman.h>
-#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/prctl.h>
#include <linux/highuid.h>
@@ -320,6 +319,37 @@ void kernel_restart_prepare(char *cmd)
}
/**
+ * register_reboot_notifier - Register function to be called at reboot time
+ * @nb: Info about notifier function to be called
+ *
+ * Registers a function with the list of functions
+ * to be called at reboot time.
+ *
+ * Currently always returns zero, as blocking_notifier_chain_register()
+ * always returns zero.
+ */
+int register_reboot_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_register(&reboot_notifier_list, nb);
+}
+EXPORT_SYMBOL(register_reboot_notifier);
+
+/**
+ * unregister_reboot_notifier - Unregister previously registered reboot notifier
+ * @nb: Hook to be unregistered
+ *
+ * Unregisters a previously registered reboot
+ * notifier function.
+ *
+ * Returns zero on success, or %-ENOENT on failure.
+ */
+int unregister_reboot_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_unregister(&reboot_notifier_list, nb);
+}
+EXPORT_SYMBOL(unregister_reboot_notifier);
+
+/**
* kernel_restart - reboot the system
* @cmd: pointer to buffer containing command to execute for restart
* or %NULL