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PM / Hibernate: Make default image size depend on total RAM size

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The default hibernation image size is currently hard coded and euqal
to 500 MB, which is not a reasonable default on many contemporary
systems.  Make it equal 2/5 of the total RAM size (this is slightly
below the maximum, i.e. 1/2 of the total RAM size, and seems to be
generally suitable).

Signed-off-by: Rafael J. Wysocki <[email protected]>
Tested-by: M. Vefa Bicakci <[email protected]>
This commit is contained in:
Rafael J. Wysocki 2010-09-20 19:44:56 +02:00
commit ac5c24ec1e
4 changed files with 16 additions and 3 deletions
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Documentation/power/interface.txt
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@ -57,7 +57,7 @@ smallest image possible. In particular, if "0" is written to this file, the
suspend image will be as small as possible.
Reading from this file will display the current image size limit, which
is set to 500 MB by default.
is set to 2/5 of available RAM by default.
/sys/power/pm_trace controls the code which saves the last PM event point in
the RTC across reboots, so that you can debug a machine that just hangs