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>
diff --git a/kernel/power/power.h b/kernel/power/power.h
index e620639..23a2db1 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -146,6 +146,7 @@
*/
#define SF_PLATFORM_MODE 1
#define SF_NOCOMPRESS_MODE 2
+#define SF_CRC32_MODE 4
/* kernel/power/hibernate.c */
extern int swsusp_check(void);