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authorEric W. Biederman <ebiederm@xmission.com>2005-07-26 11:29:55 -0600
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-26 14:35:41 -0700
commit7c9034735eccbf82608a4602c59aaf6053ea9416 (patch)
tree219e8cd4b5cfffeb261f42a2bd8e512be19cba40 /kernel
parentabcd9e51f5b832439b119d530db1353c12fd4073 (diff)
downloadlinux-7c9034735eccbf82608a4602c59aaf6053ea9416.tar.bz2
[PATCH] Add emergency_restart()
When the kernel is working well and we want to restart cleanly kernel_restart is the function to use. But in many instances the kernel wants to reboot when thing are expected to be working very badly such as from panic or a software watchdog handler. This patch adds the function emergency_restart() so that callers can be clear what semantics they expect when calling restart. emergency_restart() is expected to be callable from interrupt context and possibly reliable in even more trying circumstances. This is an initial generic implementation for all architectures. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sys.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/sys.c b/kernel/sys.c
index 31ac41a73329..a74039036fb4 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -361,6 +361,12 @@ out_unlock:
return retval;
}
+void emergency_restart(void)
+{
+ machine_emergency_restart();
+}
+EXPORT_SYMBOL_GPL(emergency_restart);
+
void kernel_restart(char *cmd)
{
notifier_call_chain(&reboot_notifier_list, SYS_RESTART, cmd);