Re: [tip:perf/core] perf/x86: Add an MSR PMU driver

Peter Zijlstra
2015-08-10T11:43:05Z

On Mon, Aug 10, 2015 at 01:19:36PM +0200, Jiri Olsa wrote:
> On Tue, Aug 04, 2015 at 02:01:20AM -0700, tip-bot for Andy Lutomirski wrote:
>
> SNIP
>
> > + /* unsupported modes and filters */
> > + if (event->attr.exclude_user ||
> > + event->attr.exclude_kernel ||
> > + event->attr.exclude_hv ||
> > + event->attr.exclude_idle ||
> > + event->attr.exclude_host ||
> > + event->attr.exclude_guest ||
> > + event->attr.sample_period) /* no sampling */
> > + return -EINVAL;
> > +
> > + event->hw.idx = -1;
> > + event->hw.event_base = msr[cfg].msr;
> > + event->hw.config = cfg;
> > +
> > + return 0;
> > +}
> > +
> > +static inline u64 msr_read_counter(struct perf_event *event)
> > +{
> > + u64 now;
> > +
> > + if (event->hw.event_base)
> > + rdmsrl(event->hw.event_base, now);
> > + else
> > + now = rdtsc();
>
> not sure itf there's newer version, but I needed attached change
> to make it compile on latest Arnaldo's tree

You need tip/x86/asm merged in.