Messages in this thread | | | Date | Fri, 13 Sep 2013 16:04:24 +0200 | From | Frederic Weisbecker <> | Subject | Re: [RFC] Restrict kernel spawning of threads to a specified set of cpus. |
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On Fri, Sep 13, 2013 at 01:45:55PM +0000, Christoph Lameter wrote: > On Thu, 12 Sep 2013, Frederic Weisbecker wrote: > > > So yeah it's a problem in theory. Now in practice, I have yet to be convinced because > > this should be solved after a few iterations in /proc in most cases. > > I have seen some drivers regularly spawning threads all over the machnine. > This is a practical issue that I am addresing. > > > > Now the issue doesn't only concern kthreads but all tasks in the system. > > If we really want to solve that race, then may be we can think of a kernel_parameter > > that sets the initial affinity of init and then lets get it naturally inherited > > through the whole tree. > > This patch that we are discussing does exactly that. >
Indeed, I just looked that again and your cpu_kthread_mask actually also applies to init. cpu_init_mask would be a better name I think.
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