linux-stable/kernel/power
Rafael J. Wysocki 9c744481c0 PM / hibernate: Do not free preallocated safe pages during image restore
The core image restoration code preallocates some safe pages
(ie. pages that weren't used by the image kernel before hibernation)
for future use before allocating the bulk of memory for loading the
image data.  Those safe pages are then freed so they can be allocated
again (with the memory management subsystem's help).  That's done to
ensure that there will be enough safe pages for temporary data
structures needed during image restoration.

However, it is not really necessary to free those pages after they
have been allocated.  They can be added to the (global) list of
safe pages right away and then picked up from there when needed
without freeing.

That reduces the overhead related to using safe pages, especially
in the arch-specific code, so modify the code accordingly.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-07-02 01:52:09 +02:00
..
autosleep.c PM / Sleep: avoid 'autosleep' in shutdown progress 2013-07-15 01:31:37 +02:00
console.c PM / sleep: Make pm_prepare_console() return void 2016-06-15 01:26:04 +02:00
hibernate.c PM / sleep: make PM notifiers called symmetrically 2016-06-28 00:38:55 +02:00
Kconfig PM: APM_EMULATION does not depend on PM 2016-01-27 23:20:14 +01:00
main.c PM / sleep: make PM notifiers called symmetrically 2016-06-28 00:38:55 +02:00
Makefile PM / Hibernate: Don't let kasan instrument snapshot.c 2016-06-14 00:38:56 +02:00
power.h PM / sleep: make PM notifiers called symmetrically 2016-06-28 00:38:55 +02:00
poweroff.c
process.c PM / suspend: show workqueue state in suspend flow 2016-07-02 01:42:48 +02:00
qos.c PM / QoS: Add debugfs support to view the list of constraints 2015-01-23 22:16:21 +01:00
snapshot.c PM / hibernate: Do not free preallocated safe pages during image restore 2016-07-02 01:52:09 +02:00
suspend.c PM / sleep: make PM notifiers called symmetrically 2016-06-28 00:38:55 +02:00
suspend_test.c PM / sleep: Enhance test_suspend option with repeat capability 2014-09-09 01:48:02 +02:00
swap.c PM / Hibernate: Call flush_icache_range() on pages restored in-place 2016-04-28 13:35:48 +01:00
user.c PM / sleep: make PM notifiers called symmetrically 2016-06-28 00:38:55 +02:00
wakelock.c PM / autosleep: Use workqueue for user space wakeup sources garbage collector 2015-07-14 21:04:48 +02:00