From fedd63d3cdc9004df43b02df5c874b8957992fe8 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Wed, 11 Sep 2013 17:18:09 +0200 Subject: [PATCH] perf tools: Compare hists comm by addresses Now that comm strings are allocated only once and refcounted to be shared among threads, these can now be safely compared by addresses. This should remove most hists collapses on post processing. Signed-off-by: Frederic Weisbecker Tested-by: Jiri Olsa Cc: Jiri Olsa Cc: David Ahern Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1381468543-25334-8-git-send-email-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/util/sort.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 835e8bdd869f..bf91d0e5c16e 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -80,7 +80,8 @@ struct sort_entry sort_thread = { static int64_t sort__comm_cmp(struct hist_entry *left, struct hist_entry *right) { - return right->thread->tid - left->thread->tid; + /* Compare the addr that should be unique among comm */ + return thread__comm_str(right->thread) - thread__comm_str(left->thread); } static int64_t -- 2.20.1