linux-kernel - [PATCH 42/85] perf cs-etm: Refactor error path in cs_etm_decoder_

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Message-Id: <20190611185911.11645-43-acme@kernel.org>
Date:   Tue, 11 Jun 2019 15:58:28 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
        Clark Williams <williams@...hat.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Suzuki Poulouse <suzuki.poulose@....com>,
        coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 42/85] perf cs-etm: Refactor error path in cs_etm_decoder__new()

From: Mathieu Poirier <mathieu.poirier@...aro.org>

There is no point in having two different error goto statement since the
openCSD API to free a decoder handles NULL pointers.  As such function
cs_etm_decoder__free() can be called to deal with all aspect of freeing
decoder memory.

Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
Tested-by: Leo Yan <leo.yan@...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: coresight@...ts.linaro.org
Cc: linux-arm-kernel@...ts.infradead.org
Link: http://lkml.kernel.org/r/20190524173508.29044-7-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
index 39fe21e1cf93..5dafec421b0d 100644
--- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
+++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
@@ -577,7 +577,7 @@ cs_etm_decoder__new(int num_cpu, struct cs_etm_decoder_params *d_params,
 	/* init library print logging support */
 	ret = cs_etm_decoder__init_def_logger_printing(d_params, decoder);
 	if (ret != 0)
-		goto err_free_decoder_tree;
+		goto err_free_decoder;
 
 	/* init raw frame logging if required */
 	cs_etm_decoder__init_raw_frame_logging(d_params, decoder);
@@ -587,15 +587,13 @@ cs_etm_decoder__new(int num_cpu, struct cs_etm_decoder_params *d_params,
 							 &t_params[i],
 							 decoder);
 		if (ret != 0)
-			goto err_free_decoder_tree;
+			goto err_free_decoder;
 	}
 
 	return decoder;
 
-err_free_decoder_tree:
-	ocsd_destroy_dcd_tree(decoder->dcd_tree);
 err_free_decoder:
-	free(decoder);
+	cs_etm_decoder__free(decoder);
 	return NULL;
 }
 
-- 
2.20.1