perf metric: Add macros for iterating map events
Adding following macros to iterate events and metric: map_for_each_event(__pe, __idx, __map) - iterates over all pmu_events_map events map_for_each_metric(__pe, __idx, __map, __metric) - iterates over all metrics that match __metric argument and use it in metricgroup__add_metric function. Macros will be be used from other places in following changes. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Reviewed-by: Kajol Jain <kjain@linux.ibm.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: John Garry <john.garry@huawei.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Clarke <pc@us.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200719181320.785305-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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