Messages in this thread | | | Date | Sat, 7 Jul 2007 09:56:30 +0200 | From | Pavel Machek <> | Subject | Re: [linux-pm] Re: [PATCH] Remove process freezer from suspend to RAM pathway |
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Hi!
> > How will that help? Block the kernel thread in the freezer or block it > > in the driver -- either way it is blocked. So how do your deadlocks > > get resolved? > > Because nobody is waiting on that kernel thread anyway without a freezer > so there is no deadlock anymore.
In the deadlock we are seeing, _someone_ is waiting on userspace thread, that leads to deadlock with freezer. We don't know who, because we have not seen the sysrq-t dumps.
The "unknown who" will deadlock on fused frozen by driver, too. We really need to fix the "unknown who" here. 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@vger.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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