linux-kernel - [PATCH 11/13] Revert "perf evsel: Add a backpointer to the evlist a evsel is in"

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Date:	Wed,  9 Sep 2015 16:50:23 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Kan Liang <kan.liang@...el.com>
Cc:	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Borislav Petkov <bp@...e.de>, David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Stephane Eranian <eranian@...gle.com>,
	Wang Nan <wangnan0@...wei.com>
Subject: [PATCH 11/13] Revert "perf evsel: Add a backpointer to the evlist a evsel is in"

From: Arnaldo Carvalho de Melo <acme@...hat.com>

This reverts commit d49e4695077278ee3016cd242967de23072ec331.

We don't need it, using machine->env seems to be enough.

Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Borislav Petkov <bp@...e.de>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Kan Liang <kan.liang@...el.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Wang Nan <wangnan0@...wei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/evlist.c | 2 --
 tools/perf/util/evsel.c  | 2 --
 tools/perf/util/evsel.h  | 4 ----
 3 files changed, 8 deletions(-)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index d51a5200c8af..09b4ec221dda 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -98,7 +98,6 @@ static void perf_evlist__purge(struct perf_evlist *evlist)
 
 	evlist__for_each_safe(evlist, n, pos) {
 		list_del_init(&pos->node);
-		pos->evlist = NULL;
 		perf_evsel__delete(pos);
 	}
 
@@ -126,7 +125,6 @@ void perf_evlist__delete(struct perf_evlist *evlist)
 
 void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry)
 {
-	entry->evlist = evlist;
 	list_add_tail(&entry->node, &evlist->entries);
 	entry->idx = evlist->nr_entries;
 	entry->tracking = !entry->idx;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 771ade4d5966..8f4d45002461 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -206,7 +206,6 @@ void perf_evsel__init(struct perf_evsel *evsel,
 	evsel->leader	   = evsel;
 	evsel->unit	   = "";
 	evsel->scale	   = 1.0;
-	evsel->evlist	   = NULL;
 	INIT_LIST_HEAD(&evsel->node);
 	INIT_LIST_HEAD(&evsel->config_terms);
 	perf_evsel__object.init(evsel);
@@ -1027,7 +1026,6 @@ void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
 void perf_evsel__exit(struct perf_evsel *evsel)
 {
 	assert(list_empty(&evsel->node));
-	assert(evsel->evlist == NULL);
 	perf_evsel__free_fd(evsel);
 	perf_evsel__free_id(evsel);
 	perf_evsel__free_config_terms(evsel);
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 298e6bbca200..93ac6b128149 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -60,9 +60,6 @@ struct perf_evsel_config_term {
 
 /** struct perf_evsel - event selector
  *
- * @evlist - evlist this evsel is in, if it is in one.
- * @node - To insert it into evlist->entries or in other list_heads, say in
- *         the event parsing routines.
  * @name - Can be set to retain the original event name passed by the user,
  *         so that when showing results in tools such as 'perf stat', we
  *         show the name used, not some alias.
@@ -76,7 +73,6 @@ struct perf_evsel_config_term {
  */
 struct perf_evsel {
 	struct list_head	node;
-	struct perf_evlist	*evlist;
 	struct perf_event_attr	attr;
 	char			*filter;
 	struct xyarray		*fd;
-- 
2.1.0

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