Commit fe9d4f57 authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by Linus Torvalds

Add kernel/notifier.c

There is separate notifier header, but no separate notifier .c file.

Extract notifier code out of kernel/sys.c which will remain for
misc syscalls I hope. Merge kernel/die_notifier.c into kernel/notifier.c.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: default avatarAlexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 3ed75eb8
......@@ -240,5 +240,7 @@ static inline int notifier_to_errno(int ret)
#define KBD_KEYSYM 0x0004 /* Keyboard keysym */
#define KBD_POST_KEYSYM 0x0005 /* Called after keyboard keysym interpretation */
extern struct blocking_notifier_head reboot_notifier_list;
#endif /* __KERNEL__ */
#endif /* _LINUX_NOTIFIER_H */
......@@ -8,8 +8,8 @@ obj-y = sched.o fork.o exec_domain.o panic.o printk.o profile.o \
signal.o sys.o kmod.o workqueue.o pid.o \
rcupdate.o extable.o params.o posix-timers.o \
kthread.o wait.o kfifo.o sys_ni.o posix-cpu-timers.o mutex.o \
hrtimer.o rwsem.o latency.o nsproxy.o srcu.o die_notifier.o \
utsname.o sysctl_check.o
hrtimer.o rwsem.o latency.o nsproxy.o srcu.o \
utsname.o sysctl_check.o notifier.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-y += time/
......
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/vmalloc.h>
#include <linux/kdebug.h>
static ATOMIC_NOTIFIER_HEAD(die_chain);
int notify_die(enum die_val val, const char *str,
struct pt_regs *regs, long err, int trap, int sig)
{
struct die_args args = {
.regs = regs,
.str = str,
.err = err,
.trapnr = trap,
.signr = sig,
};
return atomic_notifier_call_chain(&die_chain, val, &args);
}
int register_die_notifier(struct notifier_block *nb)
{
vmalloc_sync_all();
return atomic_notifier_chain_register(&die_chain, nb);
}
EXPORT_SYMBOL_GPL(register_die_notifier);
int unregister_die_notifier(struct notifier_block *nb)
{
return atomic_notifier_chain_unregister(&die_chain, nb);
}
EXPORT_SYMBOL_GPL(unregister_die_notifier);
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