diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2019-10-17 12:59:09 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-10-19 15:35:01 -0300 |
| commit | 6eb65f7a5cc553f5dffb5cea3a874f1087524d99 (patch) | |
| tree | 0a51ce3888aae612aeba90891f78c261fc0c361c /tools/perf/util | |
| parent | 6a5f3d94cb69a185b921cb92c39888dc31009acb (diff) | |
libperf: Introduce perf_evlist__for_each_mmap()
Add the perf_evlist__for_each_mmap() function and export it in the
perf/evlist.h header, so that the user can iterate through 'struct
perf_mmap' objects.
Add a internal perf_mmap__link() function to do the actual linking.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20191017105918.20873-2-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/evlist.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 0f9cd703e725..6cda5a311ba5 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -607,6 +607,8 @@ static struct mmap *evlist__alloc_mmap(struct evlist *evlist, return NULL; for (i = 0; i < evlist->core.nr_mmaps; i++) { + struct perf_mmap *prev = i ? &map[i - 1].core : NULL; + /* * When the perf_mmap() call is made we grab one refcount, plus * one extra to let perf_mmap__consume() get the last @@ -616,7 +618,7 @@ static struct mmap *evlist__alloc_mmap(struct evlist *evlist, * Each PERF_EVENT_IOC_SET_OUTPUT points to this mmap and * thus does perf_mmap__get() on it. */ - perf_mmap__init(&map[i].core, overwrite, perf_mmap__unmap_cb); + perf_mmap__init(&map[i].core, prev, overwrite, perf_mmap__unmap_cb); } return map; |