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authorBojan Smojver <bojan@rexursive.com>2010-09-09 23:06:23 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2010-10-17 01:57:42 +0200
commitf996fc9671d088bd5f52a70f18c64bfe3d0e418f (patch)
tree3d88b5adfa21fc71cbabb9a891d37b0c1ce1c692 /Documentation
parent05aa55dddb9ee4045c320661068bea78dad6a6e5 (diff)
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PM / Hibernate: Compress hibernation image with LZO
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>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/kernel-parameters.txt5
-rw-r--r--Documentation/power/swsusp.txt3
2 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 8dd7248..2c98b18 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2165,6 +2165,11 @@ and is between 256 and 4096 characters. It is defined in the file
in <PAGE_SIZE> units (needed only for swap files).
See Documentation/power/swsusp-and-swap-files.txt
+ hibernate= [HIBERNATION]
+ noresume Don't check if there's a hibernation image
+ present during boot.
+ nocompress Don't compress/decompress hibernation images.
+
retain_initrd [RAM] Keep initrd memory after extraction
rhash_entries= [KNL,NET]
diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt
index 9d60ab7..ea71889 100644
--- a/Documentation/power/swsusp.txt
+++ b/Documentation/power/swsusp.txt
@@ -66,7 +66,8 @@ swsusp saves the state of the machine into active swaps and then reboots or
powerdowns. You must explicitly specify the swap partition to resume from with
``resume='' kernel option. If signature is found it loads and restores saved
state. If the option ``noresume'' is specified as a boot parameter, it skips
-the resuming.
+the resuming. If the option ``hibernate=nocompress'' is specified as a boot
+parameter, it saves hibernation image without compression.
In the meantime while the system is suspended you should not add/remove any
of the hardware, write to the filesystems, etc.