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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-03-02 22:21:35 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-03-03 00:17:08 -0300 |
| commit | f3b623b8490af7a9b819cbcf2d99ab4597ece94b (patch) | |
| tree | 13926b268a431ab99d8518b0b9c9d4c7c124c188 /tools/perf/util/build-id.c | |
| parent | Revert "perf: Remove the extra validity check on nr_pages" (diff) | |
| download | linux-dev-f3b623b8490af7a9b819cbcf2d99ab4597ece94b.tar.xz linux-dev-f3b623b8490af7a9b819cbcf2d99ab4597ece94b.zip | |
perf tools: Reference count struct thread
We need to do that to stop accumulating entries in the dead_threads
linked list, i.e. we were keeping references to threads in struct hists
that continue to exist even after a thread exited and was removed from
the machine threads rbtree.
We still keep the dead_threads list, but just for debugging, allowing us
to iterate at any given point over the threads that still are referenced
by things like struct hist_entry.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-3ejvfyed0r7ue61dkurzjux4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/build-id.c')
| -rw-r--r-- | tools/perf/util/build-id.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c index ffdc338df925..a19674666b4e 100644 --- a/tools/perf/util/build-id.c +++ b/tools/perf/util/build-id.c @@ -61,8 +61,9 @@ static int perf_event__exit_del_thread(struct perf_tool *tool __maybe_unused, if (thread) { rb_erase(&thread->rb_node, &machine->threads); - machine->last_match = NULL; - thread__delete(thread); + if (machine->last_match == thread) + thread__zput(machine->last_match); + thread__put(thread); } return 0; |