On Thu, Apr 16, 2020 at 03:14:53PM -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 .... > > v11 reformats the perf list output to be: > List of pre-defined events (to be used in -e): > > branch-instructions OR branches [Hardware event] > branch-misses [Hardware event] > ... > > List of pre-defined events (to be used in --pfm-events): > > ix86arch: > UNHALTED_CORE_CYCLES > [count core clock cycles whenever the clock signal on the specific core is running (not halted)] > INSTRUCTION_RETIRED > [count the number of instructions at retirement. For instructions that consists of multiple mic> > ... > skx: > UNHALTED_CORE_CYCLES > [Count core clock cycles whenever the clock signal on the specific core is running (not halted)] > ... > BACLEARS > [Branch re-steered] > BACLEARS:ANY > [Number of front-end re-steers due to BPU misprediction] > ... Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx> thanks, jirka
