Em Fri, Jun 19, 2015 at 04:41:56PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Fri, Jun 19, 2015 at 10:33:43PM +0300, Adrian Hunter escreveu: > > On 19/06/2015 7:04 p.m., Arnaldo Carvalho de Melo wrote: > > >Em Fri, May 29, 2015 at 04:33:36PM +0300, Adrian Hunter escreveu: > > >>Add support for Intel Processor Trace. > > > >>Intel PT support fits within the new auxtrace infrastructure. > > >>Recording is supporting by identifying the Intel PT PMU, > > >>parsing options and setting up events. Decoding is supported > > >>by queuing up trace data by cpu or thread and then decoding > > >>synchronously delivering synthesized event samples into the > > >>session processing for tools to consume. > > > >So, at this point what commands should I use to test this? I expected to > > >be able to have some command here, in this changeset log, telling me > > >that what has been applied so far + this "Add Intel PT support", can be > > >used in such and such a fashion, obtaining this and that output. > > > >Now I'll go back and look at the cover letter to see what I can do at > > >this point and with access to a Broadwell class machine. > > > Actually you need the next patch "perf tools: Take Intel PT into use" to do > > anything. > > Yeah, saw that, the title of this patch fooled me into thinking that > Intel PT support was added :-) > > Anyway, stopping for a moment to push stuff ready to Ingo, will get back > to this after that.
So, got back to it, added that "take it into use" patch and now trying to follow that documentation: [root@perf4 ~]# perf evlist intel_pt//u sched:sched_switch dummy:u [root@perf4 ~]# perf report [root@perf4 ~]# perf record -e intel_pt//u -a sleep 10 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.379 MB perf.data ] [root@perf4 ~]# [root@perf4 ~]# [root@perf4 ~]# perf report [root@perf4 ~]# perf evlist intel_pt//u sched:sched_switch dummy:u [root@perf4 ~]# uname -r 4.1.0-rc8 [root@perf4 ~]# I am not getting any "intel_pt//u" event, ideas? - Arnaldo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in Please read the FAQ at http://www.tux.org/lkml/
