[PATCH V6 10/26] coresight: etm3x: set progbit to stop trace collection

From	Mathieu Poirier <mathieu.poirier@linaro.org>
Newsgroups	linux.kernel
Subject	[PATCH V6 10/26] coresight: etm3x: set progbit to stop trace collection
Date	2015-12-03 22:10 +0100
Message-ID	<qBJiz-1Vy-37@gated-at.bofh.it> (permalink)
References	<qBJix-1Vy-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

There is no need to use the event enable's "always false" event to
stop trace collection.  For that purpose setting the programming bit
(ETMCR:10) is enough.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
 drivers/hwtracing/coresight/coresight-etm3x.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c b/drivers/hwtracing/coresight/coresight-etm3x.c
index 0035953a1102..a0252ffb4ba7 100644
--- a/drivers/hwtracing/coresight/coresight-etm3x.c
+++ b/drivers/hwtracing/coresight/coresight-etm3x.c
@@ -422,9 +422,6 @@ static void etm_disable_hw(void *info)
 	CS_UNLOCK(drvdata->base);
 	etm_set_prog(drvdata);
 
-	/* Program trace enable to low by using always false event */
-	etm_writel(drvdata, ETM_HARD_WIRE_RES_A | ETM_EVENT_NOT_A, ETMTEEVR);
-
 	/* Read back sequencer and counters for post trace analysis */
 	config->seq_curr_state = (etm_readl(drvdata, ETMSQR) & ETM_SQR_MASK);
 
-- 
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

[PATCH V6 10/26] coresight: etm3x: set progbit to stop trace collection Mathieu Poirier <mathieu.poirier@linaro.org> - 2015-12-03 22:10 +0100

csiph-web