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Date: Fri, 23 Jan 2009 16:22:36 +0100 From: Pavel Machek <pavel@...e.cz> To: Frans Pop <elendil@...net.nl> Cc: linux-kernel@...r.kernel.org Subject: Re: HP accelerometer driver: testers wanted Hi! > Minor issue in the patch: hpfall.c should not be executable: > -rwxr-xr-x 1 fjp fjp 1759 2009-01-22 23:31 hpfall.c Hmm, fixed in my local tree, but will have to think about how to make it into patch. > > Run hpfall, and see if LED lights and disk parks if you "drop" a > > computer. (*) > > $ sudo ./hpfall & > > The LED lights up yellow, but I have problems telling if the disk gets > parked or not. One time I got a green led and seemingly a fair amount of > activity immediately after getting the yellow led. > > After looking at hpfall.c, I checked /sys/block/sda/device/unload_heads > after a drop: > $ cat /sys/block/sda/device/unload_heads > 19616 > $ cat /sys/block/sda/device/unload_heads > 0 Ok, so drop detection works for you; good. I could see disk activity stopping during find / ... > Wouldn't it be good to have locks/unlocks registered in the logs when > /sys/block/sda/device/unload_heads changes (assuming the actual write will > get delayed until the head is unparked)? That would fill the logs rather quickly, right? 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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