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Message-ID: <20080203224831.GE2799@elf.ucw.cz> Date: Sun, 3 Feb 2008 23:48:31 +0100 From: Pavel Machek <pavel@....cz> To: David Brownell <david-b@...bell.net> Cc: rjw@...k.pl, mingo@...e.hu, linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org Subject: Re: [linux-pm] sleepy linux self-test 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? > > Well, it would be nice to have this feature in as soon as reasonably possible, > > so that people can include suspend tests in the automated testing. > > Except ... "rtcwake" (from util-linux-ng) already supports such > testing, albeit from userspace. But not the timing tests. > > What was the rationale for wanting this done in-kernel? (Other > than to know it can work portably.) Ingo has to answer this one... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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