[tip: perf/core] libperf: Adopt perf_mmap__unmap() function from tools/perf

tip-bot2 for Jiri Olsa
2019-10-15T05:34:48Z

The following commit has been merged into the perf/core branch of tip:

Commit-ID: 59d7ea620b58fa7d107834a81528e3098f1c27b0
Gitweb: https://git.kernel.org/tip/59d7ea620b58fa7d107834a81528e3098f1c27b0
Author: Jiri Olsa <jolsa@kernel.org>
AuthorDate: Mon, 07 Oct 2019 14:53:14 +02:00
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitterDate: Thu, 10 Oct 2019 10:05:57 -03:00

libperf: Adopt perf_mmap__unmap() function from tools/perf

Move perf_mmap__unmap() from tools/perf to libperf, to internal header
internal/mmap.h. It will be used in the following patches. And rename
the existing perf's function to mmap__munmap().

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/20191007125344.14268-7-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/lib/include/internal/mmap.h | 1 +
tools/perf/lib/mmap.c | 10 ++++++++++
tools/perf/util/evlist.c | 4 ++--
tools/perf/util/mmap.c | 11 +++--------
tools/perf/util/mmap.h | 2 +-
5 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/tools/perf/lib/include/internal/mmap.h b/tools/perf/lib/include/internal/mmap.h
index 2e68974..5c2ca9a 100644
--- a/tools/perf/lib/include/internal/mmap.h
+++ b/tools/perf/lib/include/internal/mmap.h
@@ -39,6 +39,7 @@ size_t perf_mmap__mmap_len(struct perf_mmap *map);
void perf_mmap__init(struct perf_mmap *map, bool overwrite);
int perf_mmap__mmap(struct perf_mmap *map, struct perf_mmap_param *mp,
int fd, int cpu);
+void perf_mmap__munmap(struct perf_mmap *map);
void perf_mmap__get(struct perf_mmap *map);

#endif /* __LIBPERF_INTERNAL_MMAP_H */
diff --git a/tools/perf/lib/mmap.c b/tools/perf/lib/mmap.c
index b765e05..6eb228d 100644
--- a/tools/perf/lib/mmap.c
+++ b/tools/perf/lib/mmap.c
@@ -32,6 +32,16 @@ int perf_mmap__mmap(struct perf_mmap *map, struct perf_mmap_param *mp,
return 0;
}

+void perf_mmap__munmap(struct perf_mmap *map)
+{
+ if (map && map->base != NULL) {
+ munmap(map->base, perf_mmap__mmap_len(map));
+ map->base = NULL;
+ map->fd = -1;
+ refcount_set(&map->refcnt, 0);
+ }
+}
+
void perf_mmap__get(struct perf_mmap *map)
{
refcount_inc(&map->refcnt);
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index dc5b360..0b877d3 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -601,11 +601,11 @@ static void evlist__munmap_nofree(struct evlist *evlist)

if (evlist->mmap)
for (i = 0; i < evlist->core.nr_mmaps; i++)
- perf_mmap__munmap(&evlist->mmap[i]);
+ mmap__munmap(&evlist->mmap[i]);

if (evlist->overwrite_mmap)
for (i = 0; i < evlist->core.nr_mmaps; i++)
- perf_mmap__munmap(&evlist->overwrite_mmap[i]);
+ mmap__munmap(&evlist->overwrite_mmap[i]);
}

void evlist__munmap(struct evlist *evlist)
diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c
index be691b5..2c73b5b 100644
--- a/tools/perf/util/mmap.c
+++ b/tools/perf/util/mmap.c
@@ -115,7 +115,7 @@ void perf_mmap__put(struct mmap *map)
BUG_ON(map->core.base && refcount_read(&map->core.refcnt) == 0);

if (refcount_dec_and_test(&map->core.refcnt))
- perf_mmap__munmap(map);
+ mmap__munmap(map);
}

void perf_mmap__consume(struct mmap *map)
@@ -306,19 +306,14 @@ static void perf_mmap__aio_munmap(struct mmap *map __maybe_unused)
}
#endif

-void perf_mmap__munmap(struct mmap *map)
+void mmap__munmap(struct mmap *map)
{
+ perf_mmap__munmap(&map->core);
perf_mmap__aio_munmap(map);
if (map->data != NULL) {
munmap(map->data, mmap__mmap_len(map));
map->data = NULL;
}
- if (map->core.base != NULL) {
- munmap(map->core.base, mmap__mmap_len(map));
- map->core.base = NULL;
- map->core.fd = -1;
- refcount_set(&map->core.refcnt, 0);
- }
auxtrace_mmap__munmap(&map->auxtrace_mmap);
}

diff --git a/tools/perf/util/mmap.h b/tools/perf/util/mmap.h
index a73402e..6a18b29 100644
--- a/tools/perf/util/mmap.h
+++ b/tools/perf/util/mmap.h
@@ -43,7 +43,7 @@ struct mmap_params {
};

int mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, int cpu);
-void perf_mmap__munmap(struct mmap *map);
+void mmap__munmap(struct mmap *map);

void perf_mmap__put(struct mmap *map);