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SubjectRe: [PATCH 07/10] perf, tool: Add support to specify hw event as pmu event term
On Wed, Jul 04, 2012 at 12:39:20PM +0200, Peter Zijlstra wrote:
> On Wed, 2012-07-04 at 00:00 +0200, Jiri Olsa wrote:
> >
> > It's possible to use sysfs attribute name as 'event' term value,
> > or any possible alias for hw event, e.g.:
> > cycles OR cpu-cycles
> > branch_misses OR branch-misses
> > bus_cycles OR bus-cycles
> > cache_misses OR cache-misses
> > cache_references OR cache-references
> > ref_cycles OR ref-cycles
> > stalled_cycles_backend OR stalled-cycles-backend
> > stalled_cycles_frontend OR stalled-cycles-frontend
>
> Do we really want to do that?

well, the aliasing works on sysfs filename base.. so when you specify
event=str

'str' file is looked up in 'events' dir.

We use '_' in file names and '-' in event symbol names. I thought it might be
confusing allowing just '_' so I added also the '-' version.

I could keep just the '-' version.. with some more work on kernel ATTR
function names ;) but it seems like common sysfs practise to use '_'.

jirka


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