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From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org,
	Arnaldo Carvalho de Melo <acme@redhat.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	David Ahern <dsahern@gmail.com>, Jiri Olsa <jolsa@kernel.org>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Wang Nan <wangnan0@huawei.com>
Subject: [PATCH 09/27] perf evlist: Destructors should accept NULL
Date: Thu, 23 Jun 2016 18:23:56 -0300	[thread overview]
Message-ID: <1466717054-31048-10-git-send-email-acme@kernel.org> (raw)
In-Reply-To: <1466717054-31048-1-git-send-email-acme@kernel.org>

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

And do nothing, just like free(), to avoid having to test it in callers,
usually in error paths.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-mexbavy0ft387j5w89t365eu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/builtin-kvm.c                  | 3 +--
 tools/perf/tests/event-times.c            | 3 +--
 tools/perf/tests/parse-no-sample-id-all.c | 3 +--
 tools/perf/util/evlist.c                  | 3 +++
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 6487c06d2708..ad46e91abec5 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -1429,8 +1429,7 @@ out:
 	if (kvm->session)
 		perf_session__delete(kvm->session);
 	kvm->session = NULL;
-	if (kvm->evlist)
-		perf_evlist__delete(kvm->evlist);
+	perf_evlist__delete(kvm->evlist);
 
 	return err;
 }
diff --git a/tools/perf/tests/event-times.c b/tools/perf/tests/event-times.c
index 95fb744f6628..9f5698ac81ae 100644
--- a/tools/perf/tests/event-times.c
+++ b/tools/perf/tests/event-times.c
@@ -200,8 +200,7 @@ static int test_times(int (attach)(struct perf_evlist *),
 		 count.ena, count.run);
 
 out_err:
-	if (evlist)
-		perf_evlist__delete(evlist);
+	perf_evlist__delete(evlist);
 	return !err ? TEST_OK : TEST_FAIL;
 }
 
diff --git a/tools/perf/tests/parse-no-sample-id-all.c b/tools/perf/tests/parse-no-sample-id-all.c
index 294c76b01b41..81c6eeaca0f5 100644
--- a/tools/perf/tests/parse-no-sample-id-all.c
+++ b/tools/perf/tests/parse-no-sample-id-all.c
@@ -44,8 +44,7 @@ static int process_events(union perf_event **events, size_t count)
 	for (i = 0; i < count && !err; i++)
 		err = process_event(&evlist, events[i]);
 
-	if (evlist)
-		perf_evlist__delete(evlist);
+	perf_evlist__delete(evlist);
 
 	return err;
 }
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 1b918aa075d6..fcb8f1ff7806 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -127,6 +127,9 @@ void perf_evlist__exit(struct perf_evlist *evlist)
 
 void perf_evlist__delete(struct perf_evlist *evlist)
 {
+	if (evlist == NULL)
+		return;
+
 	perf_evlist__munmap(evlist);
 	perf_evlist__close(evlist);
 	cpu_map__put(evlist->cpus);
-- 
2.5.5

  parent reply	other threads:[~2016-06-23 21:27 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-23 21:23 [GIT PULL 00/27] perf/core improvements and fixes Arnaldo Carvalho de Melo
2016-06-23 21:23 ` [PATCH 01/27] perf script stackcollapse: Remove reference to the perl interpreter Arnaldo Carvalho de Melo
2016-06-23 21:23 ` [PATCH 02/27] perf hists browser: Move hist_browser into header file Arnaldo Carvalho de Melo
2016-06-23 21:23 ` [PATCH 03/27] perf hists browser: Make (new|delete|run) public Arnaldo Carvalho de Melo
2016-06-23 21:23 ` [PATCH 04/27] perf hists browser: Introduce struct hist_browser title callback Arnaldo Carvalho de Melo
2016-06-23 21:23 ` [PATCH 05/27] perf hists browser: Move horizontal scroll init to new() Arnaldo Carvalho de Melo
2016-06-23 21:23 ` [PATCH 06/27] perf hists browser: Introduce perf_evsel_browser constructor Arnaldo Carvalho de Melo
2016-06-23 21:23 ` [PATCH 07/27] perf hists browser: Introduce init() Arnaldo Carvalho de Melo
2016-06-23 21:23 ` [PATCH 08/27] perf hists: Enlarge pid sort entry size Arnaldo Carvalho de Melo
2016-06-23 21:23 ` Arnaldo Carvalho de Melo [this message]
2016-06-23 21:23 ` [PATCH 10/27] perf session: Destructors should accept NULL Arnaldo Carvalho de Melo
2016-06-23 21:23 ` [PATCH 11/27] perf tests time-to-tsc: No need to disable an event before deleting it Arnaldo Carvalho de Melo
2016-06-23 21:23 ` [PATCH 12/27] perf machine: Destructors should accept NULL Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 13/27] perf tools: Let python use correct gcc for build_ext Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 14/27] perf config: Move config declarations from util/cache.h to util/config.h Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 15/27] perf tools: Find right DSO taking into account if binary is 32 or 64-bit Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 16/27] perf unwind: Change macro names of perf register Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 17/27] perf unwind: Fix wrongly used regs for x86_32 unwind Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 18/27] perf unwind: Fix wrongly used regs for aarch64 unwind Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 19/27] perf evlist: Rename for_each() macros to for_each_entry() Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 20/27] perf tools: Rename strlist_for_each() " Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 21/27] perf rb_resort: Rename for_each() " Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 22/27] perf intlist: " Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 23/27] perf script: Print sample flags more nicely Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 24/27] perf auxtrace: Add option to feed branches to the thread stack Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 25/27] perf script: Add callindent option Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 26/27] perf config: Introduce new init() and exit() Arnaldo Carvalho de Melo
2016-06-23 21:24 ` [PATCH 27/27] perf config: Reimplement show_config() using config_set__for_each Arnaldo Carvalho de Melo
2016-06-26 10:43 ` [GIT PULL 00/27] perf/core improvements and fixes Ingo Molnar

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