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    Introduce CONFIG_SUSPEND for suspend-to-Ram and standby · 296699de
    Rafael J. Wysocki 提交于
    Introduce CONFIG_SUSPEND representing the ability to enter system sleep
    states, such as the ACPI S3 state, and allow the user to choose SUSPEND
    and HIBERNATION independently of each other.
    
    Make HOTPLUG_CPU be selected automatically if SUSPEND or HIBERNATION has
    been chosen and the kernel is intended for SMP systems.
    
    Also, introduce CONFIG_PM_SLEEP which is automatically selected if
    CONFIG_SUSPEND or CONFIG_HIBERNATION is set and use it to select the
    code needed for both suspend and hibernation.
    
    The top-level power management headers and the ACPI code related to
    suspend and hibernation are modified to use the new definitions (the
    changes in drivers/acpi/sleep/main.c are, mostly, moving code to reduce
    the number of ifdefs).
    
    There are many other files in which CONFIG_PM can be replaced with
    CONFIG_PM_SLEEP or even with CONFIG_SUSPEND, but they can be updated in
    the future.
    Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
    Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
    296699de
pm.h 11.7 KB