linux-kernel - [tip:perf/core] perf hists: Remove hist

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Message-ID: <tip-uldtgljymtrkns0knpiso5op@git.kernel.org>
Date:	Sun, 22 Mar 2015 03:05:06 -0700
From:	tip-bot for Arnaldo Carvalho de Melo <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, dsahern@...il.com, hpa@...or.com,
	acme@...hat.com, dzickus@...hat.com, eranian@...gle.com,
	mingo@...nel.org, namhyung@...nel.org, fweisbec@...il.com,
	jolsa@...hat.com, tglx@...utronix.de, bp@...e.de,
	adrian.hunter@...el.com
Subject: [tip:perf/core] perf hists: Remove hist_entry->used,
  not used anymore

Commit-ID:  4c47f4fcd60a2f4153d6fe0c31650fbec112a1bd
Gitweb:     http://git.kernel.org/tip/4c47f4fcd60a2f4153d6fe0c31650fbec112a1bd
Author:     Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Tue, 17 Mar 2015 17:18:58 -0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 17 Mar 2015 17:18:58 -0300

perf hists: Remove hist_entry->used, not used anymore

Since hist_entry__delete() nowadays doesn't actually frees anything that
may be in use by the annotation code.

Eventually we will solve this for good by reference counting struct
symbol.

Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Borislav Petkov <bp@...e.de>
Cc: David Ahern <dsahern@...il.com>
Cc: Don Zickus <dzickus@...hat.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/n/tip-uldtgljymtrkns0knpiso5op@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/ui/browsers/hists.c | 5 -----
 tools/perf/util/hist.c         | 8 +-------
 tools/perf/util/sort.h         | 1 -
 3 files changed, 1 insertion(+), 13 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index ebd9d3a..c37e70a 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1731,12 +1731,7 @@ do_annotate:
 			if (!notes->src)
 				continue;
 
-			/*
-			 * Don't let this be freed, say, by hists__decay_entry.
-			 */
-			he->used = true;
 			err = hist_entry__tui_annotate(he, evsel, hbt);
-			he->used = false;
 			/*
 			 * offer option to annotate the other branch source or target
 			 * (if they exists) when returning from annotate
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index d9a6d35..cc22b91 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -263,15 +263,9 @@ void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel)
 	while (next) {
 		n = rb_entry(next, struct hist_entry, rb_node);
 		next = rb_next(&n->rb_node);
-		/*
-		 * We may be annotating this, for instance, so keep it here in
-		 * case some it gets new samples, we'll eventually free it when
-		 * the user stops browsing and it agains gets fully decayed.
-		 */
 		if (((zap_user && n->level == '.') ||
 		     (zap_kernel && n->level != '.') ||
-		     hists__decay_entry(hists, n)) &&
-		    !n->used) {
+		     hists__decay_entry(hists, n))) {
 			hists__delete_entry(hists, n);
 		}
 	}
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index c03e4ff..9c01b83 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -102,7 +102,6 @@ struct hist_entry {
 
 	bool			init_have_children;
 	char			level;
-	bool			used;
 	u8			filtered;
 	char			*srcline;
 	struct symbol		*parent;
--
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