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Date: Mon, 30 Jan 2012 14:09:19 -0800 From: Tejun Heo <tj@...nel.org> To: "Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com> Cc: rjw@...k.pl, pavel@....cz, len.brown@...el.com, linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 1/4] PM/Freezer: Make thaw_processes() thaw only userspace tasks On Tue, Jan 31, 2012 at 03:34:57AM +0530, Srivatsa S. Bhat wrote: > Currently the situation is: > > freeze_processes() - freezes only userspace tasks > freeze_kernel_threads() - freezes only kernel threads > thaw_kernel_threads() - thaws only kernel threads > thaw_processes() - thaws *everything* (both userspace tasks and kernel threads) > > The point that thaw_processes() thaws everything is rather unintuitive > and can lead to bugs. So, modify thaw_processes() so that it thaws only > userspace processes. This way we can also have more control over what > exactly gets thawed in different situations. > > Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@...ux.vnet.ibm.com> Maybe I'm misreading it but doesn't this introduce window where kernel tasks aren't thawed between this patch and the following ones? It looks like this one should come later. Thanks. -- tejun -- 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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