Re: [PATCH 3.6-rc6] cpufreq/powernow-k8: workqueue user shouldn'tmigrate the kworker to another CPU

From: Tejun Heo
Date: Mon Sep 17 2012 - 16:53:59 EST


On Mon, Sep 17, 2012 at 10:36:54PM +0200, Borislav Petkov wrote:
> Wouldn't it be much simpler to carve out the piece after
> set_cpus_allowed_ptr(), put it in a sub-function called
> __powernowk8_target() and call it with smp_call_function_single instead
> of defining another work item?
>
> Would the workqueue code handle that or are there any other issues?

The function grabs a mutex. smp_call_function wouldn't be too happy
about that.

Thanks.

--
tejun
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