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libperf: Move 'leader' from tools/perf to perf_evsel::leader

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Move evsel::leader to perf_evsel::leader, so we can move the group
interface to libperf.

Also add several evsel helpers to ease up the transition:

  struct evsel *evsel__leader(struct evsel *evsel);
  - get leader evsel

  bool evsel__has_leader(struct evsel *evsel, struct evsel *leader);
  - true if evsel has leader as leader

  bool evsel__is_leader(struct evsel *evsel);
  - true if evsel is itw own leader

  void evsel__set_leader(struct evsel *evsel, struct evsel *leader);
  - set leader for evsel

Committer notes:

Fix this when building with 'make BUILD_BPF_SKEL=1'

  tools/perf/util/bpf_counter.c

  -       if (evsel->leader->core.nr_members > 1) {
  +       if (evsel->core.leader->nr_members > 1) {

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Requested-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210706151704.73662-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2021-07-06 17:17:00 +02:00
committed by Arnaldo Carvalho de Melo
parent 38fe0e0156
commit fba7c86601
20 changed files with 103 additions and 77 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
tools/perf/util/evsel.c
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@@ -241,7 +241,6 @@ void evsel__init(struct evsel *evsel,
{
perf_evsel__init(&evsel->core, attr, idx);
evsel->tracking = !idx;
evsel->leader = evsel;
evsel->unit = "";
evsel->scale = 1.0;
evsel->max_events = ULONG_MAX;
@@ -409,7 +408,7 @@ struct evsel *evsel__clone(struct evsel *orig)
evsel->cgrp = cgroup__get(orig->cgrp);
evsel->tp_format = orig->tp_format;
evsel->handler = orig->handler;
evsel->leader = orig->leader;
evsel->core.leader = orig->core.leader;
evsel->max_events = orig->max_events;
evsel->tool_event = orig->tool_event;
@@ -1074,7 +1073,7 @@ void __weak arch_evsel__set_sample_weight(struct evsel *evsel)
void evsel__config(struct evsel *evsel, struct record_opts *opts,
struct callchain_param *callchain)
{
struct evsel *leader = evsel->leader;
struct evsel *leader = evsel__leader(evsel);
struct perf_event_attr *attr = &evsel->core.attr;
int track = evsel->tracking;
bool per_cpu = opts->target.default_per_cpu && !opts->target.per_thread;
@@ -1592,7 +1591,7 @@ static int evsel__match_other_cpu(struct evsel *evsel, struct evsel *other,
static int evsel__hybrid_group_cpu(struct evsel *evsel, int cpu)
{
struct evsel *leader = evsel->leader;
struct evsel *leader = evsel__leader(evsel);
if ((evsel__is_hybrid(evsel) && !evsel__is_hybrid(leader)) ||
(!evsel__is_hybrid(evsel) && evsel__is_hybrid(leader))) {
@@ -1604,7 +1603,7 @@ static int evsel__hybrid_group_cpu(struct evsel *evsel, int cpu)
static int get_group_fd(struct evsel *evsel, int cpu, int thread)
{
struct evsel *leader = evsel->leader;
struct evsel *leader = evsel__leader(evsel);
int fd;
if (evsel__is_group_leader(evsel))
@@ -2850,3 +2849,23 @@ bool evsel__is_hybrid(struct evsel *evsel)
{
return evsel->pmu_name && perf_pmu__is_hybrid(evsel->pmu_name);
}
struct evsel *evsel__leader(struct evsel *evsel)
{
return container_of(evsel->core.leader, struct evsel, core);
}
bool evsel__has_leader(struct evsel *evsel, struct evsel *leader)
{
return evsel->core.leader == &leader->core;
}
bool evsel__is_leader(struct evsel *evsel)
{
return evsel__has_leader(evsel, evsel);
}
void evsel__set_leader(struct evsel *evsel, struct evsel *leader)
{
evsel->core.leader = &leader->core;
}