diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2019-10-07 15:53:19 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-10-10 17:45:32 +0300 |
| commit | 32fdc2ca7e2ae8ae5d0ff660ca7783acd8ee6396 (patch) | |
| tree | 9924e96fd7075e5697de48eb3a9984b173389e3a /tools/perf/util/mmap.c | |
| parent | 7c4d41824f9afc659ba425a41018546531cffd72 (diff) | |
| download | linux-32fdc2ca7e2ae8ae5d0ff660ca7783acd8ee6396.tar.xz | |
libperf: Adopt perf_mmap__read_done() from tools/perf
Move perf_mmap__read_init() from tools/perf to libperf and export it in
the perf/mmap.h header.
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/20191007125344.14268-12-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/mmap.c')
| -rw-r--r-- | tools/perf/util/mmap.c | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c index 59379118c2f1..2dedef9b06fd 100644 --- a/tools/perf/util/mmap.c +++ b/tools/perf/util/mmap.c @@ -405,20 +405,3 @@ int perf_mmap__push(struct mmap *md, void *to, out: return rc; } - -/* - * Mandatory for overwrite mode - * The direction of overwrite mode is backward. - * The last perf_mmap__read() will set tail to map->core.prev. - * Need to correct the map->core.prev to head which is the end of next read. - */ -void perf_mmap__read_done(struct mmap *map) -{ - /* - * Check if event was unmapped due to a POLLHUP/POLLERR. - */ - if (!refcount_read(&map->core.refcnt)) - return; - - map->core.prev = perf_mmap__read_head(&map->core); -} |