From f3b623b8490af7a9b819cbcf2d99ab4597ece94b Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 2 Mar 2015 22:21:35 -0300 Subject: 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 Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-3ejvfyed0r7ue61dkurzjux4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/build-id.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'tools/perf/util/build-id.c') 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; -- cgit v1.2.3-59-g8ed1b