linux/arch/um
Johannes Berg dde8b58d51 um: add a pseudo RTC
Add a pseudo RTC that simply is able to send an alarm signal
waking up the system at a given time in the future.

Since apparently timerfd_create() FDs don't support SIGIO, we
use the sigio-creating helper thread, which just learned to do
suspend/resume properly in the previous patch.

For time-travel mode, OTOH, just add an event at the specified
time in the future, and that's already sufficient to wake up
the system at that point in time since suspend will just be in
an "endless wait".

For s2idle support also call pm_system_wakeup().

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2021-02-12 21:38:52 +01:00
..
configs um: Cleanup CONFIG_IOSCHED_CFQ 2020-03-29 23:15:22 +02:00
drivers um: add a pseudo RTC 2021-02-12 21:38:52 +01:00
include um: add a pseudo RTC 2021-02-12 21:38:52 +01:00
kernel um: add a pseudo RTC 2021-02-12 21:38:52 +01:00
os-Linux um: remove process stub VMA 2021-02-12 21:37:38 +01:00
scripts License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Kconfig Revert "um: support some of ARCH_HAS_SET_MEMORY" 2021-01-26 22:11:38 +01:00
Kconfig.debug treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile kbuild: remove cc-option test of -fno-stack-protector 2020-07-07 11:13:10 +09:00
Makefile-os-Linux
Makefile-skas