Hi! > > > > The changes look good to me. > > > > > > They feel unfinished to me though. :) > > > > > > Like using "jiffies" instead of a clocksource, which makes trouble > > > since the timing covers periods with IRQs disabled. And the test > > > mode parameter needs work. > > > > Well, I'd say that timing has bigger problem, right? > > > > It is > > > > set alarm > > suspend system > > | poweroff > > alarm expires > > system resumes > > > > ... so you are measuring resume time + sleep time, no? > > There's no "poweroff" step when entering STR or STANDBY! > > But more specifically, I avoided that issue by comparing times between > (a) start and end of the "suspend devices" steps; > (b) start and end of the "resume devices" steps. > > Example output, with the relevant lines highlighted by "*": > > PM: test RTC wakeup from 'mem' suspend > PM: Syncing filesystems ... done. > PM: Preparing system for mem sleep > Freezing user space processes ... (elapsed 0.00 seconds) done. > Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done. > PM: Entering mem sleep > Suspending console(s) > * PM: suspend devices took 0.000 seconds > GPIO-A may wake for 00080000 > GPIO-C may wake for 00000008 > GPIO-D may wake for 00000020 > AT91: PM - wake mask 00000036, pm state 3 > AT91: PM - no slow clock mode yet ... > AT91: PM - wakeup 00000002 > * PM: resume devices took 0.132 seconds > PM: Finishing wakeup. > Restarting tasks ... done. > > The underlying clocksource has resolution of 32 KiHz, while HZ=128; > the "suspend" more typically reports 7 msec. And there should be a > few more wakeup GPIOs, except I seem to not have enabled gpio_keys. > That "wakeup 00000002" means the heavily-overloaded "system" IRQ > woke the system ... the RTC is on that IRQ line. Aha, that should work, yes. Sorry for noise. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
