On Mon, Mar 23, 2020 at 04:58:46PM -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 .... > > v5 is a rebase. > v4 is a rebase on git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git > branch perf/core and re-adds the tools/build/feature/test-libpfm4.c > missed in v3. > v3 is against acme/perf/core and 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> I still have some conflicts, but I merged it by hand patching file tools/build/Makefile.feature patching file tools/build/feature/Makefile patching file tools/build/feature/test-libpfm4.c patching file tools/perf/Documentation/Makefile patching file tools/perf/Documentation/perf-record.txt patching file tools/perf/Documentation/perf-stat.txt patching file tools/perf/Documentation/perf-top.txt patching file tools/perf/Makefile.config patching file tools/perf/Makefile.perf Hunk #3 FAILED at 834. 1 out of 3 hunks FAILED -- saving rejects to file tools/perf/Makefile.perf.rej patching file tools/perf/builtin-list.c patching file tools/perf/builtin-record.c patching file tools/perf/builtin-stat.c patching file tools/perf/builtin-top.c Hunk #2 succeeded at 1549 (offset 2 lines). Hunk #3 succeeded at 1567 (offset 2 lines). patching file tools/perf/util/evsel.c patching file tools/perf/util/evsel.h patching file tools/perf/util/parse-events.c patching file tools/perf/util/parse-events.h patching file tools/perf/util/pmu.c Hunk #1 succeeded at 869 (offset 5 lines). patching file tools/perf/util/pmu.h Hunk #1 succeeded at 65 (offset 1 line). jirka
