From 80e53d1148231d7d4fdc4cd89e5393616b33bf82 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 7 Oct 2019 14:53:15 +0200 Subject: libperf: Adopt perf_mmap__put() function from tools/perf Move perf_mmap__put() from tools/perf to libperf. Once perf_mmap__put() is moved, we need a way to call application related unmap code (AIO and aux related code for eprf), when the map goes away. Add the perf_mmap::unmap callback to do that. The unmap path from perf is: perf_mmap__put (libperf) perf_mmap__munmap (libperf) map->unmap_cb -> perf_mmap__unmap_cb (perf) mmap__munmap (perf) Committer notes: Add missing linux/kernel.h to tools/perf/lib/mmap.c to get the BUG_ON definition. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20191007125344.14268-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) (limited to 'tools/perf/util/evlist.c') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 0b877d39a660..4394a5a10ce9 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -433,7 +433,7 @@ static void perf_evlist__munmap_filtered(struct fdarray *fda, int fd, struct mmap *map = fda->priv[fd].ptr; if (map) - perf_mmap__put(map); + perf_mmap__put(&map->core); } int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask) @@ -601,11 +601,11 @@ static void evlist__munmap_nofree(struct evlist *evlist) if (evlist->mmap) for (i = 0; i < evlist->core.nr_mmaps; i++) - mmap__munmap(&evlist->mmap[i]); + perf_mmap__munmap(&evlist->mmap[i].core); if (evlist->overwrite_mmap) for (i = 0; i < evlist->core.nr_mmaps; i++) - mmap__munmap(&evlist->overwrite_mmap[i]); + perf_mmap__munmap(&evlist->overwrite_mmap[i].core); } void evlist__munmap(struct evlist *evlist) @@ -615,6 +615,13 @@ void evlist__munmap(struct evlist *evlist) zfree(&evlist->overwrite_mmap); } +static void perf_mmap__unmap_cb(struct perf_mmap *map) +{ + struct mmap *m = container_of(map, struct mmap, core); + + mmap__munmap(m); +} + static struct mmap *evlist__alloc_mmap(struct evlist *evlist, bool overwrite) { @@ -638,7 +645,7 @@ 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__init(&map[i].core, overwrite, perf_mmap__unmap_cb); } return map; @@ -715,7 +722,7 @@ static int evlist__mmap_per_evsel(struct evlist *evlist, int idx, */ if (!evsel->core.system_wide && perf_evlist__add_pollfd(&evlist->core, fd, &maps[idx], revent) < 0) { - perf_mmap__put(&maps[idx]); + perf_mmap__put(&maps[idx].core); return -1; } -- cgit