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| author | Jiri Olsa <jolsa@kernel.org> | 2019-10-07 14:53:33 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-10-10 12:57:22 -0300 |
| commit | 696f27c994ed056fd176ce9dc51c7988e148e4b0 (patch) | |
| tree | e00d4c27a00f056942dd47433705b7959ad35803 /tools | |
| parent | 93dd6e2831ff399f7685aa2157b997b6392efac8 (diff) | |
| download | lwn-696f27c994ed056fd176ce9dc51c7988e148e4b0.tar.gz lwn-696f27c994ed056fd176ce9dc51c7988e148e4b0.zip | |
libperf: Introduce perf_evlist__purge()
Add a static perf_evlist__purge() function to purge evsels from a evlist.
Add also perf_evlist__for_each_entry_safe() which is used by
perf_evlist__purge().
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.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/20191007125344.14268-26-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/lib/evlist.c | 13 | ||||
| -rw-r--r-- | tools/perf/lib/include/internal/evlist.h | 18 |
2 files changed, 31 insertions, 0 deletions
diff --git a/tools/perf/lib/evlist.c b/tools/perf/lib/evlist.c index 7ba98f0e6365..9534ad9a572f 100644 --- a/tools/perf/lib/evlist.c +++ b/tools/perf/lib/evlist.c @@ -109,6 +109,18 @@ perf_evlist__next(struct perf_evlist *evlist, struct perf_evsel *prev) return next; } +static void perf_evlist__purge(struct perf_evlist *evlist) +{ + struct perf_evsel *pos, *n; + + perf_evlist__for_each_entry_safe(evlist, n, pos) { + list_del_init(&pos->node); + perf_evsel__delete(pos); + } + + evlist->nr_entries = 0; +} + void perf_evlist__exit(struct perf_evlist *evlist) { perf_cpu_map__put(evlist->cpus); @@ -125,6 +137,7 @@ void perf_evlist__delete(struct perf_evlist *evlist) perf_evlist__munmap(evlist); perf_evlist__close(evlist); + perf_evlist__purge(evlist); perf_evlist__exit(evlist); free(evlist); } diff --git a/tools/perf/lib/include/internal/evlist.h b/tools/perf/lib/include/internal/evlist.h index 0721512ffb19..be0b25a70730 100644 --- a/tools/perf/lib/include/internal/evlist.h +++ b/tools/perf/lib/include/internal/evlist.h @@ -82,6 +82,24 @@ void perf_evlist__exit(struct perf_evlist *evlist); #define perf_evlist__for_each_entry_reverse(evlist, evsel) \ __perf_evlist__for_each_entry_reverse(&(evlist)->entries, evsel) +/** + * __perf_evlist__for_each_entry_safe - safely iterate thru all the evsels + * @list: list_head instance to iterate + * @tmp: struct evsel temp iterator + * @evsel: struct evsel iterator + */ +#define __perf_evlist__for_each_entry_safe(list, tmp, evsel) \ + list_for_each_entry_safe(evsel, tmp, list, node) + +/** + * perf_evlist__for_each_entry_safe - safely iterate thru all the evsels + * @evlist: evlist instance to iterate + * @evsel: struct evsel iterator + * @tmp: struct evsel temp iterator + */ +#define perf_evlist__for_each_entry_safe(evlist, tmp, evsel) \ + __perf_evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel) + static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist) { return list_entry(evlist->entries.next, struct perf_evsel, node); |