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power management: change /sys/power/disk display

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Change /sys/power/disk to display all valid modes as well as the currently
selected one in a fashion known from the LED subsystem.

This changes userspace API, but it is apparently not used much (we asked
some userspace developers)

Signed-off-by: Johannes Berg <[email protected]>
Acked-by: "Rafael J. Wysocki" <[email protected]>
Acked-by: Pavel Machek <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Johannes Berg 2007-05-06 14:50:50 -07:00 • committed by Linus Torvalds
commit f0ced9b229
2 changed files with 34 additions and 3 deletions
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8
Documentation/power/interface.txt
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@ -34,8 +34,12 @@ for 5 seconds, resume devices, unfreeze tasks and enable nonboot CPUs. Then,
we are able to look in the log messages and work out, for example, which code
is being slow and which device drivers are misbehaving.
Reading from this file will display what the mode is currently set
to. Writing to this file will accept one of
Reading from this file will display all supported modes and the currently
selected one in brackets, for example
[shutdown] reboot test testproc
Writing to this file will accept one of
'platform' (only if the platform supports it)
'shutdown'