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Hibernation: Introduce exportable suspend ioctls header (rev. 2)

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Move the definitions of hibernation ioctls to a separate header file in
include/linux, which can be exported to the user space.

Signed-off-by: Rafael J. Wysocki <[email protected]>
Acked-by: Pavel Machek <[email protected]>
Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Rafael J. Wysocki 2007-10-26 01:05:05 +02:00 • committed by Len Brown
commit 3010f8caa4
4 changed files with 39 additions and 33 deletions
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10
Documentation/power/userland-swsusp.txt
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@ -14,7 +14,7 @@ are going to develop your own suspend/resume utilities.
The interface consists of a character device providing the open(),
release(), read(), and write() operations as well as several ioctl()
commands defined in kernel/power/power.h. The major and minor
commands defined in include/linux/suspend_ioctls.h . The major and minor
numbers of the device are, respectively, 10 and 231, and they can
be read from /sys/class/misc/snapshot/dev.
@ -70,10 +70,10 @@ SNAPSHOT_FREE_SWAP_PAGES - free all swap pages allocated by
SNAPSHOT_SET_SWAP_AREA - set the resume partition and the offset (in <PAGE_SIZE>
units) from the beginning of the partition at which the swap header is
located (the last ioctl() argument should point to a struct
resume_swap_area, as defined in kernel/power/power.h, containing the
resume device specification and the offset); for swap partitions the
offset is always 0, but it is different from zero for swap files (see
Documentation/swsusp-and-swap-files.txt for details).
resume_swap_area, as defined in kernel/power/suspend_ioctls.h,
containing the resume device specification and the offset); for swap
partitions the offset is always 0, but it is different from zero for
swap files (see Documentation/swsusp-and-swap-files.txt for details).
SNAPSHOT_PLATFORM_SUPPORT - enable/disable the hibernation platform support,
depending on the argument value (enable, if the argument is nonzero)