[PATCH] perf arm-spe: Use advertised caps/min_interval as default sample_period

[Arnaldo Carvalho de Melo]

Em Wed, Feb 23, 2022 at 09:14:36AM +0800, Leo Yan escreveu:
> On Mon, Feb 21, 2022 at 05:10:42PM +0000, German Gomez wrote:
> > When recording SPE traces, the default sample_period is currently being
> > set to 1 in the perf_event_attr fields, instead of the value advertised
> > in '/sys/devices/arm_spe_0/caps/min_interval':
> > 
> > Before:
> > 
> > $ perf record -e arm_spe// -vv -- sleep 1
> > [...]
> >   { sample_period, sample_freq }   1
> > [...]
> > 
> > Use the value from the above sysfs location as a more sensible default
> > (it was already being read, but the value not being used)
> > 
> > After:
> > 
> > $ perf record -e arm_spe// -vv -- sleep 1
> > [...]
> >   { sample_period, sample_freq }   1024
> > [...]
> > 
> > Signed-off-by: German Gomez <german.gomez at arm.com>
> 
> The change looks good to me:
> 
> Reviewed-by: Leo Yan <leo.yan at linaro.org>

Thanks, applied.

- Arnaldo