diff options
author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-03-14 19:45:46 -0400 |
---|---|---|
committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-03-14 19:45:46 -0400 |
commit | bea3864fb627d110933cfb8babe048b63c4fc76e (patch) | |
tree | 00cbe0edef293227d1cc441eab75ad1ded992df8 /kernel | |
parent | 40dc166cb5dddbd36aa4ad11c03915ea538f5a61 (diff) |
PM / Hibernate: Reduce autotuned default image size
The hibernate image size autotuning mechanism sets the default
image size to 5/2 of the total system RAM, but it is reported
that on some systems device drivers allocate substantial
amounts of memory during suspend and the creation of the image
fails as a result (too little memory is preallocated).
Modify the autotuning mechanism to use 1/3 instead of 2/5 of RAM
as the default image size, which is reported to be sufficient for
the affected systems.
References: https://bugzilla.kernel.org/show_bug.cgi?id=30482
Reported-and-tested-by: Martin Steigerwald <Martin@Lichtvoll.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/power/snapshot.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 64db648ff911..ca0aacc24874 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c | |||
@@ -42,15 +42,15 @@ static void swsusp_unset_page_forbidden(struct page *); | |||
42 | 42 | ||
43 | /* | 43 | /* |
44 | * Preferred image size in bytes (tunable via /sys/power/image_size). | 44 | * Preferred image size in bytes (tunable via /sys/power/image_size). |
45 | * When it is set to N, swsusp will do its best to ensure the image | 45 | * When it is set to N, the image creating code will do its best to |
46 | * size will not exceed N bytes, but if that is impossible, it will | 46 | * ensure the image size will not exceed N bytes, but if that is |
47 | * try to create the smallest image possible. | 47 | * impossible, it will try to create the smallest image possible. |
48 | */ | 48 | */ |
49 | unsigned long image_size; | 49 | unsigned long image_size; |
50 | 50 | ||
51 | void __init hibernate_image_size_init(void) | 51 | void __init hibernate_image_size_init(void) |
52 | { | 52 | { |
53 | image_size = ((totalram_pages * 2) / 5) * PAGE_SIZE; | 53 | image_size = (totalram_pages / 3) * PAGE_SIZE; |
54 | } | 54 | } |
55 | 55 | ||
56 | /* List of PBEs needed for restoring the pages that were allocated before | 56 | /* List of PBEs needed for restoring the pages that were allocated before |