From cddcef607782966f1601808c17fe9c4c5f79f9f4 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Wed, 9 Apr 2014 20:54:29 +0200 Subject: perf tools: Share map_groups among threads of the same group Sharing map groups within all process threads. This way there's only one copy of mmap info and it's reachable from any thread within the process. Original-patch-by: Arnaldo Carvalho de Melo Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1397490723-1992-5-git-send-email-jolsa@redhat.com Signed-off-by: Jiri Olsa --- tools/perf/util/machine.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'tools/perf/util/machine.c') diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index a53cd0b8c151..98ec56dc890b 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -316,6 +316,17 @@ static struct thread *__machine__findnew_thread(struct machine *machine, rb_link_node(&th->rb_node, parent, p); rb_insert_color(&th->rb_node, &machine->threads); machine->last_match = th; + + /* + * We have to initialize map_groups separately + * after rb tree is updated. + * + * The reason is that we call machine__findnew_thread + * within thread__init_map_groups to find the thread + * leader and that would screwed the rb tree. + */ + if (thread__init_map_groups(th, machine)) + return NULL; } return th; -- cgit v1.2.3