Re: [RFC PATCH] kernel: sched: Provide a pointer to the valid CPU mask

[Sebastian Andrzej Siewior]

On 2017-04-06 11:32:24 [+0200], Peter Zijlstra wrote:
> On Tue, Apr 04, 2017 at 08:42:02PM +0200, Sebastian Andrzej Siewior wrote:
> > While converting the existing users I tried to stick with the rules
> > above howeverâ well mostly CPUFREQ tries to temporary switch the CPU
> > mask to do something on a certain CPU and then switches the mask back it
> > its original value.
> 
> 
> There's a bunch of that through ancient and rotten parts of the kernel.
> All those sites are broken.
> 
> Nothing stops userspace from setting a different affinity right after
> the kernel does for those threads.

Good. So you are saying I should convert them to something like
queue_work_on()?

Sebastian