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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

13
tools/perf/util/evsel.h
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@@ -118,7 +118,6 @@ struct evsel {
bool reset_group;
bool errored;
struct hashmap *per_pkg_mask;
struct evsel *leader;
int err;
int cpu_iter;
struct {
@@ -367,7 +366,7 @@ static inline struct evsel *evsel__prev(struct evsel *evsel)
*/
static inline bool evsel__is_group_leader(const struct evsel *evsel)
{
return evsel->leader == evsel;
return evsel->core.leader == &evsel->core;
}
/**
@@ -405,19 +404,19 @@ int evsel__open_strerror(struct evsel *evsel, struct target *target,
static inline int evsel__group_idx(struct evsel *evsel)
{
return evsel->core.idx - evsel->leader->core.idx;
return evsel->core.idx - evsel->core.leader->idx;
}
/* Iterates group WITHOUT the leader. */
#define for_each_group_member(_evsel, _leader) \
for ((_evsel) = list_entry((_leader)->core.node.next, struct evsel, core.node); \
(_evsel) && (_evsel)->leader == (_leader); \
(_evsel) && (_evsel)->core.leader == (&_leader->core); \
(_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node))
/* Iterates group WITH the leader. */
#define for_each_group_evsel(_evsel, _leader) \
for ((_evsel) = _leader; \
(_evsel) && (_evsel)->leader == (_leader); \
(_evsel) && (_evsel)->core.leader == (&_leader->core); \
(_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node))
static inline bool evsel__has_branch_callstack(const struct evsel *evsel)
@@ -462,4 +461,8 @@ int evsel__store_ids(struct evsel *evsel, struct evlist *evlist);
void evsel__zero_per_pkg(struct evsel *evsel);
bool evsel__is_hybrid(struct evsel *evsel);
struct evsel *evsel__leader(struct evsel *evsel);
bool evsel__has_leader(struct evsel *evsel, struct evsel *leader);
bool evsel__is_leader(struct evsel *evsel);
void evsel__set_leader(struct evsel *evsel, struct evsel *leader);
#endif /* __PERF_EVSEL_H */