• Johannes Berg's avatar
    um: add a pseudo RTC · dde8b58d
    Johannes Berg authored
    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: default avatarJohannes Berg <johannes.berg@intel.com>
    Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
    dde8b58d
time.c 22.7 KB