linux-kernel - [tip:perf/urgent] perf cs-etm: Return errcode in cs_etm__process_auxtrace

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Date:   Wed, 17 Jul 2019 16:06:56 -0700
From:   tip-bot for YueHaibing <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, mingo@...nel.org, jolsa@...hat.com,
        acme@...hat.com, yuehaibing@...wei.com,
        alexander.shishkin@...ux.intel.com, peterz@...radead.org,
        tglx@...utronix.de, suzuki.poulose@....com,
        mathieu.poirier@...aro.org, hpa@...or.com, namhyung@...nel.org
Subject: [tip:perf/urgent] perf cs-etm: Return errcode in
 cs_etm__process_auxtrace_info()

Commit-ID:  6285bd151b95aa28d6de9b8b9249702681f059d2
Gitweb:     https://git.kernel.org/tip/6285bd151b95aa28d6de9b8b9249702681f059d2
Author:     YueHaibing <yuehaibing@...wei.com>
AuthorDate: Thu, 21 Mar 2019 10:31:22 +0800
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 11 Jul 2019 12:45:02 -0300

perf cs-etm: Return errcode in cs_etm__process_auxtrace_info()

The 'err' variable is set in the error path, but it's not returned to
callers.  Don't always return -EINVAL, return err.

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Suzuki Poulouse <suzuki.poulose@....com>
Cc: linux-arm-kernel@...ts.infradead.org
Fixes: cd8bfd8c973e ("perf tools: Add processing of coresight metadata")
Link: http://lkml.kernel.org/r/20190321023122.21332-3-yuehaibing@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/cs-etm.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 2e9f5bc45550..3d1c34fc4d68 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -2517,8 +2517,10 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
 	session->auxtrace = &etm->auxtrace;
 
 	etm->unknown_thread = thread__new(999999999, 999999999);
-	if (!etm->unknown_thread)
+	if (!etm->unknown_thread) {
+		err = -ENOMEM;
 		goto err_free_queues;
+	}
 
 	/*
 	 * Initialize list node so that at thread__zput() we can avoid
@@ -2530,8 +2532,10 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
 	if (err)
 		goto err_delete_thread;
 
-	if (thread__init_map_groups(etm->unknown_thread, etm->machine))
+	if (thread__init_map_groups(etm->unknown_thread, etm->machine)) {
+		err = -ENOMEM;
 		goto err_delete_thread;
+	}
 
 	if (dump_trace) {
 		cs_etm__print_auxtrace_info(auxtrace_info->priv, num_cpu);
@@ -2575,5 +2579,5 @@ err_free_traceid_list:
 err_free_hdr:
 	zfree(&hdr);
 
-	return -EINVAL;
+	return err;
 }