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PM / Hibernate: Compress hibernation image with LZO

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Compress hibernation image with LZO in order to save on I/O and
therefore time to hibernate/thaw.

[rjw: Added hibernate=nocompress command line option instead of just
 nocompress which would be confusing, fixed a couple of compiler
 warnings, fixed kerneldoc comments, minor cleanups.]

Signed-off-by: Bojan Smojver <bojan@rexursive.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Bojan Smojver
2010-09-09 23:06:23 +02:00
committed by Rafael J. Wysocki
parent 05aa55dddb
commit f996fc9671
6 changed files with 306 additions and 8 deletions
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kernel/power/Kconfig
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@@ -137,6 +137,8 @@ config SUSPEND_FREEZER
config HIBERNATION
bool "Hibernation (aka 'suspend to disk')"
depends on PM && SWAP && ARCH_HIBERNATION_POSSIBLE
select LZO_COMPRESS
select LZO_DECOMPRESS
select SUSPEND_NVS if HAS_IOMEM
---help---
Enable the suspend to disk (STD) functionality, which is usually