linux-kernel - [PATCH 08/13] perf tools: Cleaning up function cs_etm__alloc

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Message-Id: <20190212171618.25355-9-mathieu.poirier@linaro.org>
Date:   Tue, 12 Feb 2019 10:16:13 -0700
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     acme@...nel.org
Cc:     suzuki.poulose@....com, mingo@...hat.com, peterz@...radead.org,
        jolsa@...hat.com, leo.yan@...aro.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 08/13] perf tools: Cleaning up function cs_etm__alloc_queue()

Function cs_etm__alloc_queue() should only be concerned with the allocation
of memory for the etmq and accompanying decoder.  Everything else should
be done in the calling function.

Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
---
 tools/perf/util/cs-etm.c | 37 ++++++++++++++++---------------------
 1 file changed, 16 insertions(+), 21 deletions(-)

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 4cc9fce97a86..c9a5b4935209 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -405,8 +405,7 @@ static u32 cs_etm__mem_access(struct cs_etm_queue *etmq, u64 address,
 	return len;
 }
 
-static struct cs_etm_queue *cs_etm__alloc_queue(struct cs_etm_auxtrace *etm,
-						unsigned int queue_nr)
+static struct cs_etm_queue *cs_etm__alloc_queue(struct cs_etm_auxtrace *etm)
 {
 	struct cs_etm_decoder_params d_params;
 	struct cs_etm_trace_params  *t_params = NULL;
@@ -444,12 +443,6 @@ static struct cs_etm_queue *cs_etm__alloc_queue(struct cs_etm_auxtrace *etm,
 	if (!etmq->event_buf)
 		goto out_free;
 
-	etmq->etm = etm;
-	etmq->queue_nr = queue_nr;
-	etmq->pid = -1;
-	etmq->tid = -1;
-	etmq->cpu = -1;
-
 	/* Use metadata to fill in trace parameters for trace decoder */
 	t_params = zalloc(sizeof(*t_params) * etm->num_cpu);
 
@@ -479,10 +472,6 @@ static struct cs_etm_queue *cs_etm__alloc_queue(struct cs_etm_auxtrace *etm,
 		goto out_free_decoder;
 
 	zfree(&t_params);
-
-	etmq->offset = 0;
-	etmq->period_instructions = 0;
-
 	return etmq;
 
 out_free_decoder:
@@ -503,24 +492,30 @@ static int cs_etm__setup_queue(struct cs_etm_auxtrace *etm,
 			       struct auxtrace_queue *queue,
 			       unsigned int queue_nr)
 {
+	int ret = 0;
 	struct cs_etm_queue *etmq = queue->priv;
 
 	if (list_empty(&queue->head) || etmq)
-		return 0;
+		goto out;
 
-	etmq = cs_etm__alloc_queue(etm, queue_nr);
+	etmq = cs_etm__alloc_queue(etm);
 
-	if (!etmq)
-		return -ENOMEM;
+	if (!etmq) {
+		ret = -ENOMEM;
+		goto out;
+	}
 
 	queue->priv = etmq;
-
-	if (queue->cpu != -1)
-		etmq->cpu = queue->cpu;
-
+	etmq->etm = etm;
+	etmq->queue_nr = queue_nr;
+	etmq->cpu = queue->cpu;
 	etmq->tid = queue->tid;
+	etmq->pid = -1;
+	etmq->offset = 0;
+	etmq->period_instructions = 0;
 
-	return 0;
+out:
+	return ret;
 }
 
 static int cs_etm__setup_queues(struct cs_etm_auxtrace *etm)
-- 
2.17.1