Adding perf_evlist__mmap_cb_new 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. Link: http://lkml.kernel.org/n/tip-tiyl8aymuk3fv9j033yo8...@git.kernel.org Signed-off-by: Jiri Olsa <jo...@kernel.org> --- tools/perf/util/evlist.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 850dacf7bf97..52a6af91e877 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -725,6 +725,29 @@ 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_new(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) { @@ -923,6 +946,7 @@ int evlist__mmap_ex(struct evlist *evlist, unsigned int pages, }; struct perf_evlist_mmap_ops ops __maybe_unused = { .idx = perf_evlist__mmap_cb_idx, + .new = perf_evlist__mmap_cb_new, }; if (!evlist->mmap) -- 2.21.0
