From ca0aec0f7a94bf9f07fefa8bfd23282d4e8ceb8a Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 6 Jan 2006 00:15:56 -0800 Subject: [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 Acked-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/power/disk.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'kernel/power/disk.c') diff --git a/kernel/power/disk.c b/kernel/power/disk.c index 9e51cdf7b78..e24446f8d8c 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, }; -- cgit v1.2.3