diff options
| author |   Jiri Olsa <jolsa@redhat.com> | 2021-07-06 17:17:02 +0200 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-07-09 14:04:32 -0300 |
| commit | 2e6263ab54322bac27589d1102f7a955d3f7ff80 (patch) | |
| tree | af67011351792d5add8b0645b9227d6918d9a8bd /tools/lib/perf/evlist.c | |
| parent | libperf: Move 'nr_groups' from tools/perf to evlist::nr_groups (diff) | |
| download | wireguard-linux-2e6263ab54322bac27589d1102f7a955d3f7ff80.tar.xz wireguard-linux-2e6263ab54322bac27589d1102f7a955d3f7ff80.zip | |
libperf: Adopt evlist__set_leader() from tools/perf as perf_evlist__set_leader()
Move the implementation of evlist__set_leader() to a new libperf
perf_evlist__set_leader() function with the same functionality make it a
libperf exported API.
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/20210706151704.73662-6-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/perf/evlist.c')
| -rw-r--r-- | tools/lib/perf/evlist.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c index 68b90bbf0ffb..e37dfad31383 100644 --- a/tools/lib/perf/evlist.c +++ b/tools/lib/perf/evlist.c @@ -642,3 +642,24 @@ perf_evlist__next_mmap(struct perf_evlist *evlist, struct perf_mmap *map, return overwrite ? evlist->mmap_ovw_first : evlist->mmap_first; } + +void __perf_evlist__set_leader(struct list_head *list) +{ + struct perf_evsel *evsel, *leader; + + leader = list_entry(list->next, struct perf_evsel, node); + evsel = list_entry(list->prev, struct perf_evsel, node); + + leader->nr_members = evsel->idx - leader->idx + 1; + + __perf_evlist__for_each_entry(list, evsel) + evsel->leader = leader; +} + +void perf_evlist__set_leader(struct perf_evlist *evlist) +{ + if (evlist->nr_entries) { + evlist->nr_groups = evlist->nr_entries > 1 ? 1 : 0; + __perf_evlist__set_leader(&evlist->entries); + } +} |