linux/tools/perf/util/stream.h
Ian Rogers 2f0539fa02 perf stream: Use evsel rather than evsel->idx
An evsel idx may not be stable due to sorting, evlist removal,
etc. Avoid use of the idx where the evsel itself can be used to avoid
these problems.

Reviewed-by: James Clark <james.clark@linaro.org>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Chen Ni <nichen@iscas.ac.cn>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20241114230713.330701-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2024-12-23 13:53:08 -03:00

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C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_STREAM_H
#define __PERF_STREAM_H
struct callchain_node;
struct evlist;
struct evsel;
struct stream {
struct callchain_node *cnode;
struct callchain_node *pair_cnode;
};
struct evsel_streams {
struct stream *streams;
const struct evsel *evsel;
int nr_streams_max;
int nr_streams;
u64 streams_hits;
};
struct evlist_streams {
struct evsel_streams *ev_streams;
int nr_evsel;
};
void evlist_streams__delete(struct evlist_streams *els);
struct evlist_streams *evlist__create_streams(struct evlist *evlist,
int nr_streams_max);
struct evsel_streams *evsel_streams__entry(struct evlist_streams *els,
const struct evsel *evsel);
void evsel_streams__match(struct evsel_streams *es_base,
struct evsel_streams *es_pair);
void evsel_streams__report(struct evsel_streams *es_base,
struct evsel_streams *es_pair);
#endif /* __PERF_STREAM_H */