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authorBojan Smojver <bojan@rexursive.com>2011-10-13 23:58:07 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2011-10-16 23:30:38 +0200
commit081a9d043c983f161b78fdc4671324d1342b86bc (patch)
tree4382d88e5705b18a95471af2a71319401c47744f /kernel/power/power.h
parentd231ff1af70a2df43d809173cf8c94e9c3beb853 (diff)
downloadlinux-081a9d043c983f161b78fdc4671324d1342b86bc.tar.bz2
PM / Hibernate: Improve performance of LZO/plain hibernation, checksum image
Use threads for LZO compression/decompression on hibernate/thaw. Improve buffering on hibernate/thaw. Calculate/verify CRC32 of the image pages on hibernate/thaw. In my testing, this improved write/read speed by a factor of about two. Signed-off-by: Bojan Smojver <bojan@rexursive.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel/power/power.h')
-rw-r--r--kernel/power/power.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/power/power.h b/kernel/power/power.h
index e6206397ce67..23a2db1ec442 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -146,6 +146,7 @@ extern int swsusp_swap_in_use(void);
*/
#define SF_PLATFORM_MODE 1
#define SF_NOCOMPRESS_MODE 2
+#define SF_CRC32_MODE 4
/* kernel/power/hibernate.c */
extern int swsusp_check(void);