diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2006-01-06 08:15:56 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 16:33:42 (GMT) |
| commit | ca0aec0f7a94bf9f07fefa8bfd23282d4e8ceb8a (patch) | |
| tree | 5f31f11eba908545d5e02698fe9c163a8612dd26 /kernel/power/disk.c | |
| parent | b3a93a255ec33a04776ec50efb30b7a99168dda2 (diff) | |
| download | linux-ca0aec0f7a94bf9f07fefa8bfd23282d4e8ceb8a.tar.xz | |
[PATCH] swsusp: make image size limit tunable
Make the suspend image size limit tunable via /sys/power/image_size.
It is necessary for systems on which there is a limited amount of swap
available for suspend. It can also be useful for optimizing performance of
swsusp on systems with 1 GB of RAM or more.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: 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/disk.c')
| -rw-r--r-- | kernel/power/disk.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c index 9e51cdf..e24446f 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -365,9 +365,29 @@ out: power_attr(resume); +static ssize_t image_size_show(struct subsystem * subsys, char *buf) +{ + return sprintf(buf, "%u\n", image_size); +} + +static ssize_t image_size_store(struct subsystem * subsys, const char * buf, size_t n) +{ + unsigned int size; + + if (sscanf(buf, "%u", &size) == 1) { + image_size = size; + return n; + } + + return -EINVAL; +} + +power_attr(image_size); + static struct attribute * g[] = { &disk_attr.attr, &resume_attr.attr, + &image_size_attr.attr, NULL, }; |