Re: [PATCH v1 1/4] perf: Allow suppressing AUX records

2017-11-15 Thread Peter Zijlstra
On Tue, Nov 14, 2017 at 02:30:21PM +0200, Alexander Shishkin wrote: > It has been pointed out to me many times that it is useful to be able > to switch off AUX records to save the bandwidth for records that actually > matter, for example, in AUX overwrite mode. > > The usefulness of PERF_RECORD_AU

[PATCH v1 1/4] perf: Allow suppressing AUX records

2017-11-14 Thread Alexander Shishkin
It has been pointed out to me many times that it is useful to be able to switch off AUX records to save the bandwidth for records that actually matter, for example, in AUX overwrite mode. The usefulness of PERF_RECORD_AUX is in some of its flags, like the TRUNCATED flag that tells the decoder wher