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SubjectRe: [PATCHSET] cpuhog: implement and use cpuhog
On Fri, 12 Mar 2010 01:43:31 pm Tejun Heo wrote:
> Hello, Peter.
> On 03/11/2010 04:25 AM, Peter Zijlstra wrote:
> > cpuhog as a name doesn't work for me, stop-machine had a name that
> > described its severity and impact, cpuhog makes me think of while(1);.
> >
> > Can't we keep the stop_machine name and make that a workqueue interface
> > like you propose?
> >
> > That way we'd end up with something like:
> >
> > kernel/stop_machine.c
> > int stop_cpu(int cpu, stop_fn_t fn, void *arg)
> > int stop_machine(struct cpumask *mask, stop_fn_t fn, void *arg)
> The distinction would be diabling of IRQ on each CPU.
> hog_[one_]cpu[s]() schedule highest priority task to, well, hog the
> cpu but doesn't affect contextless part of the cpu (irq, bh, whatnot).

I rather like the name. And the stop_machine name is still there; it's just
using cpuhog rather than workqueues.

Ugly things should have ugly names.

For Patch 2/4 at least:

Acked-by: Rusty Russell <>

Great work Tejun!

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