perf stat: Warn group events from different hybrid PMU
If a group has events which are from different hybrid PMUs, shows a warning: "WARNING: events in group from different hybrid PMUs!" This is to remind the user not to put the core event and atom event into one group. Next, just disable grouping. # perf stat -e "{cpu_core/cycles/,cpu_atom/cycles/}" -a -- sleep 1 WARNING: events in group from different hybrid PMUs! WARNING: grouped events cpus do not match, disabling group: anon group { cpu_core/cycles/, cpu_atom/cycles/ } Performance counter stats for 'system wide': 5,438,125 cpu_core/cycles/ 3,914,586 cpu_atom/cycles/ 1.004250966 seconds time elapsed Signed-off-by:Jin Yao <yao.jin@linux.intel.com> Reviewed-by:
Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210427070139.25256-17-yao.jin@linux.intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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