Messages in this thread | | | From | "Langsdorf, Mark" <> | Date | Mon, 21 Sep 2009 11:44:59 -0500 | Subject | RE: [PATCH 4/6] x86/cpufreq: use cpumask_copy instead of = |
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> On Thu, 11 Jun 2009 05:12:16 am Langsdorf, Mark wrote: > > > powernow_k8_target is problematic: it grabs a mutex. cpufreq > > > people, is this called often? > > > > Yes. It's the function that makes a frequency change > > happen, so 5+ times per second per core isn't > > unreasonable. > > Right, so we need to revisit this. I'll leave it for the > moment and put it on my TODO list.
Rusty -
Did you ever get any ideas on a solution to this? I'm getting reports that the set_cpus_allowed_ptr() in powernow_k8_target() is breaking with changeset ebc79c4f8da0f92efa968e0328f32334a2ce80cf . I haven't changed the powernow_k8 code, so I suspect something happened to set_cpus_allowed_ptr().
-Mark Langsdorf Operating System Research Center AMD
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