Re: [PATCH] perf/x86/intel: Fix unwind errors from PEBS entries (mk-II)

[Peter Zijlstra]

On Mon, Jul 23, 2018 at 08:30:06AM -0500, Josh Poimboeuf wrote:
> On Thu, Jul 19, 2018 at 11:19:54PM +0200, Peter Zijlstra wrote:
> > --- a/include/uapi/linux/perf_event.h
> > +++ b/include/uapi/linux/perf_event.h
> > @@ -143,6 +143,8 @@ enum perf_event_sample_format {
> >  	PERF_SAMPLE_PHYS_ADDR			= 1U << 19,
> >  
> >  	PERF_SAMPLE_MAX = 1U << 20,		/* non-ABI */
> > +
> > +	__PERF_SAMPLE_CALLCHAIN_EARLY		= 1UL << 63,
> 
> Given the kbuild test robot errors for building on 32-bit, looks like
> the 63 needs to be changed to 31 so it fits in an int?

I made it 1ULL << 63. The actual field (perf_event_attr::sample_type is
u64).