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Message-ID: <20070903034720.GB3655@ucw.cz> Date: Mon, 3 Sep 2007 03:47:20 +0000 From: Pavel Machek <pavel@....cz> To: Jeff Chua <jeff.chua.linux@...il.com> Cc: rusty@...tycorp.com.au, vatsa@...ibm.com, zwane@....linux.org.uk, kernel list <linux-kernel@...r.kernel.org>, "Rafael J. Wysocki" <rjw@...k.pl> Subject: Re: cpu hotplug support broken in 2.6.23-rc3 Hi! > > Can you try 20-or-so tests? Mine hangs randomly, so it survived 4 or > > so cycles at one point. > > Mine still survives with this ... with sleep 1 ... > > # for((i=0; i<100; i++)); do echo $i; echo $((i % 2)) > >/sys/devices/system/cpu/cpu1/online; sleep 1; done > > and this as well ... without sleep ... > > # for((i=0; i<100; i++)); do echo $i; echo $((i % 2)) > >/sys/devices/system/cpu/cpu1/online; done > > I'm on reiserfs. gcc 3.4.5. Config sent to you seperately so as not to > cloud lkml. If anyone wants the config, please let me know. Is mime > "attachment" acceptable now on lkml? Ok, so it gets weirder. I have now machine in "hung" state; other consoles still work, but there are no timers - sleep 1 hangs forever. sysrq-t shows kstopmachine hung in hrtimer_try_to_cancel. So I indeed suspect difference-in-kconfig to trigger this, and will try disabling noidlehz. 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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