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| author |   Jiri Olsa <jolsa@kernel.org> | 2019-10-07 14:53:27 +0200 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-10-10 12:30:21 -0300 |
| commit | bb1b1885e2f22afb8bc7981cd865fe4b0e3d975b (patch) | |
| tree | bc5534d27cf3b8d073aed352ac6bb45386788dc8 /tools/perf/util/evlist.c | |
| parent | perf tools: Introduce perf_evlist__mmap_cb_idx() (diff) | |
| download | linux-dev-bb1b1885e2f22afb8bc7981cd865fe4b0e3d975b.tar.xz linux-dev-bb1b1885e2f22afb8bc7981cd865fe4b0e3d975b.zip | |
perf evlist: Introduce perf_evlist__mmap_cb_get()
Add the perf_evlist__mmap_cb_get() function to return 'struct perf_mmap'
object during perf_evlist__mmap_ops() call.
The array of 'struct mmap' is allocated via evlist__alloc_mmap(), in
this callback we simply returns pointer to the base object.
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/20191007125344.14268-20-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/util/evlist.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 11716f2b965a..f50ee5cb6554 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -750,6 +750,29 @@ perf_evlist__mmap_cb_idx(struct perf_evlist *_evlist, auxtrace_mmap_params__set_idx(&mp->auxtrace_mp, evlist, idx, per_cpu); } +static struct perf_mmap* +perf_evlist__mmap_cb_get(struct perf_evlist *_evlist, bool overwrite, int idx) +{ + struct evlist *evlist = container_of(_evlist, struct evlist, core); + struct mmap *maps = evlist->mmap; + + if (overwrite) { + maps = evlist->overwrite_mmap; + + if (!maps) { + maps = evlist__alloc_mmap(evlist, true); + if (!maps) + return NULL; + + evlist->overwrite_mmap = maps; + if (evlist->bkw_mmap_state == BKW_MMAP_NOTREADY) + perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_RUNNING); + } + } + + return &maps[idx].core; +} + static int evlist__mmap_per_cpu(struct evlist *evlist, struct mmap_params *mp) { @@ -948,6 +971,7 @@ int evlist__mmap_ex(struct evlist *evlist, unsigned int pages, }; struct perf_evlist_mmap_ops ops __maybe_unused = { .idx = perf_evlist__mmap_cb_idx, + .get = perf_evlist__mmap_cb_get, }; if (!evlist->mmap) |