On Wed, Mar 18, 2020 at 3:23 AM Jiri Olsa <jolsa@xxxxxxxxxx> wrote: > > On Wed, Mar 11, 2020 at 02:36:13PM -0700, Ian Rogers wrote: > > This patch links perf with the libpfm4 library if it is available and > > NO_LIBPFM4 isn't passed to the build. The libpfm4 library contains hardware > > event tables for all processors supported by perf_events. It is a helper > > library that helps convert from a symbolic event name to the event > > encoding required by the underlying kernel interface. This > > library is open-source and available from: http://perfmon2.sf.net. > > > > With this patch, it is possible to specify full hardware events > > by name. Hardware filters are also supported. Events must be > > specified via the --pfm-events and not -e option. Both options > > are active at the same time and it is possible to mix and match: > > > > $ perf stat --pfm-events inst_retired:any_p:c=1:i -e cycles .... > > > > v3 is against acme/perf/core removes a diagnostic warning > > v2 of this patch makes the --pfm-events man page documentation > > conditional on libpfm4 behing configured. It tidies some of the > > documentation and adds the feature test missed in the v1 patch. > > > > Author: Stephane Eranian <eranian@xxxxxxxxxx> > > Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx> > > hi, > is this the latest version? I can't apply it on Arnaldo's perf/core > > jirka Sorry, I'd failed to re-add the feature test when I shifted branches. The complete patch should be here: https://lkml.org/lkml/2020/3/19/4 Thanks, Ian
