diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2007-07-19 01:47:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-19 10:04:42 -0700 |
| commit | b10d911749d37dccfa5873d2088aea3f074b9e45 (patch) | |
| tree | 56bd0ccb2861d7ae562d4e48a737727628358b42 /kernel/power/power.h | |
| parent | c2cf7d87d804c66e063829d5ca739053e901dc15 (diff) | |
PM: introduce hibernation and suspend notifiers
Make it possible to register hibernation and suspend notifiers, so that
subsystems can perform hibernation-related or suspend-related operations that
should not be carried out by device drivers' .suspend() and .resume()
routines.
[akpm@linux-foundation.org: build fixes]
[akpm@linux-foundation.org: cleanups]
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Nigel Cunningham <nigel@nigel.suspend2.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/power/power.h')
| -rw-r--r-- | kernel/power/power.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/power/power.h b/kernel/power/power.h index eab3603b7ca..01c2275b15b 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -173,5 +173,15 @@ extern void swsusp_close(void); extern int suspend_enter(suspend_state_t state); struct timeval; +/* kernel/power/swsusp.c */ extern void swsusp_show_speed(struct timeval *, struct timeval *, unsigned int, char *); + +/* kernel/power/main.c */ +extern struct blocking_notifier_head pm_chain_head; + +static inline int pm_notifier_call_chain(unsigned long val) +{ + return (blocking_notifier_call_chain(&pm_chain_head, val, NULL) + == NOTIFY_BAD) ? -EINVAL : 0; +} |