On Wed, 17 Feb 2016, Thomas Gleixner wrote:
> On Wed, 17 Feb 2016, Vikas Shivappa wrote:
> > > - cpumask_set_cpu(cpu, &cqm_cpumask);
> > > + /* First online cpu in package becomes the reader */
> > > + reader = cpumask_any_and(topology_core_cpumask(cpu), &cqm_cpumask);
> > > + if (reader >= nr_cpu_ids)
> > > + cpumask_set_cpu(cpu, &cqm_cpumask);
> >
> > I was confused by the topology_core_cpumask naming as its really the mask of
> > all cpus in the same package. I sent a patch for cqm and rapl to fix this
> > looping when you had given the same feedback during CAt patches review , but
> > they have never made it so far due to CAT patch issues.
>
> Duh, totally forgot about them.
>
> > Would it be better to resend the rapl (looks like perf_uncore has same loop)
> > fixes separately ?
>
> Yes, please resend the rapl one. perf_uncore is a different trainwreck which I
> fixed already:
>
> lkml.kernel.org/r/[email protected]
And looking at rapl, it's the same trainwreck as uncore versus error
handling. Sigh....
Thanks,
tglx
