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| author | Luca Tettamanti <kronos.it@gmail.com> | 2006-03-23 03:00:09 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-23 07:38:08 -0800 |
| commit | 9b238205ba5d79a8a242d7a5ddb82b89e4dc4e48 (patch) | |
| tree | 494b06bddd9d6b28a4e83ad7b49523a92ee5b207 /kernel/power/power.h | |
| parent | 94c188d32996beac00426740974310e32f162c14 (diff) | |
| download | lwn-9b238205ba5d79a8a242d7a5ddb82b89e4dc4e48.tar.gz lwn-9b238205ba5d79a8a242d7a5ddb82b89e4dc4e48.zip | |
[PATCH] swsusp: add s2ram ioctl to userland interface
Add the SNAPSHOT_S2RAM ioctl to the snapshot device.
This ioctl allows a userland application to make the system (previously frozen
with the SNAPSHOT_FREE ioctl) enter the S3 state without freezing processes
and disabling nonboot CPUs for the second time.
This will allow us to implement the suspend-to-disk-and-RAM (STDR)
functionality in the userland suspend tools.
Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/power/power.h')
| -rw-r--r-- | kernel/power/power.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/power/power.h b/kernel/power/power.h index 42c431c8bdde..f06f12f21767 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -77,7 +77,8 @@ int snapshot_image_loaded(struct snapshot_handle *handle); #define SNAPSHOT_GET_SWAP_PAGE _IOR(SNAPSHOT_IOC_MAGIC, 8, void *) #define SNAPSHOT_FREE_SWAP_PAGES _IO(SNAPSHOT_IOC_MAGIC, 9) #define SNAPSHOT_SET_SWAP_FILE _IOW(SNAPSHOT_IOC_MAGIC, 10, unsigned int) -#define SNAPSHOT_IOC_MAXNR 10 +#define SNAPSHOT_S2RAM _IO(SNAPSHOT_IOC_MAGIC, 11) +#define SNAPSHOT_IOC_MAXNR 11 /** * The bitmap is used for tracing allocated swap pages @@ -112,3 +113,4 @@ extern int swsusp_resume(void); extern int swsusp_read(void); extern int swsusp_write(void); extern void swsusp_close(void); +extern int suspend_enter(suspend_state_t state); |