[PATCH] perf: fix raw sample size if no sampling data is attached

[Robert Richter]

On 19.04.10 14:19:57, Stephane Eranian wrote:
> > +       perf_sample_data_init(&data, 0);
> > +       if (event->attr.sample_type & PERF_SAMPLE_RAW) {
> > +               for (i = 1; i < size; i++)
> > +                       rdmsrl(msr++, *buf++);
> > +               raw.size = sizeof(u64) * size;
> > +               raw.data = buffer;
> > +               data.raw = &raw;
> > +       }
> > +
> 
> Need to add the padding: raw.size = sizeof(u64) * size + sizeof(u32);
> 
> > +       regs = *iregs; /* later: update ip from ibs sample */
> > +
> > +       if (perf_event_overflow(event, 1, &data, &regs))

During code review I found a bug in perf_output_sample(). A fix is
below.

> > +               x86_pmu_stop(event);
> > +       else
> > +               __x86_pmu_enable_event(&event->hw, reenable);
> > +
> > +       return 1;
> > +}

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