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From: Tingwei Zhang <tingwei@codeaurora.org>
To: Mathieu Poirier <mathieu.poirier@linaro.org>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Mike Leach <mike.leach@linaro.org>
Cc: tsoni@codeaurora.org,
	Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
	Kim Phillips <kim.phillips@arm.com>,
	Mao Jinlong <jinlmao@codeaurora.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	coresight@lists.linaro.org, Randy Dunlap <rdunlap@infradead.org>,
	Mian Yousaf Kaukab <ykaukab@suse.de>,
	Russell King <linux@armlinux.org.uk>,
	linux-kernel@vger.kernel.org,
	Tingwei Zhang <tingwei@codeaurora.org>,
	Leo Yan <leo.yan@linaro.org>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v9 08/24] coresight: etm: perf: Fix warning caused by etm_setup_aux failure
Date: Thu, 20 Aug 2020 13:47:02 +0800	[thread overview]
Message-ID: <20200820054718.20115-9-tingwei@codeaurora.org> (raw)
In-Reply-To: <20200820054718.20115-1-tingwei@codeaurora.org>

When coresight_build_path() fails on all the cpus, etm_setup_aux
calls etm_free_aux() to free allocated event_data.
WARN_ON(cpumask_empty(mask) will be triggered since cpu mask is empty.
Check event_data->snk_config is not NULL first to avoid this
warning.

Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
 drivers/hwtracing/coresight/coresight-etm-perf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c
index dcb0592418ae..3728c44e5763 100644
--- a/drivers/hwtracing/coresight/coresight-etm-perf.c
+++ b/drivers/hwtracing/coresight/coresight-etm-perf.c
@@ -126,10 +126,10 @@ static void free_sink_buffer(struct etm_event_data *event_data)
 	cpumask_t *mask = &event_data->mask;
 	struct coresight_device *sink;
 
-	if (WARN_ON(cpumask_empty(mask)))
+	if (!event_data->snk_config)
 		return;
 
-	if (!event_data->snk_config)
+	if (WARN_ON(cpumask_empty(mask)))
 		return;
 
 	cpu = cpumask_first(mask);
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Tingwei Zhang <tingwei@codeaurora.org>
To: Mathieu Poirier <mathieu.poirier@linaro.org>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Mike Leach <mike.leach@linaro.org>
Cc: Tingwei Zhang <tingwei@codeaurora.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Leo Yan <leo.yan@linaro.org>,
	Randy Dunlap <rdunlap@infradead.org>,
	Russell King <linux@armlinux.org.uk>,
	Kim Phillips <kim.phillips@arm.com>,
	Mian Yousaf Kaukab <ykaukab@suse.de>,
	tsoni@codeaurora.org,
	Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
	Mao Jinlong <jinlmao@codeaurora.org>,
	coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v9 08/24] coresight: etm: perf: Fix warning caused by etm_setup_aux failure
Date: Thu, 20 Aug 2020 13:47:02 +0800	[thread overview]
Message-ID: <20200820054718.20115-9-tingwei@codeaurora.org> (raw)
In-Reply-To: <20200820054718.20115-1-tingwei@codeaurora.org>

When coresight_build_path() fails on all the cpus, etm_setup_aux
calls etm_free_aux() to free allocated event_data.
WARN_ON(cpumask_empty(mask) will be triggered since cpu mask is empty.
Check event_data->snk_config is not NULL first to avoid this
warning.

Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
 drivers/hwtracing/coresight/coresight-etm-perf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c
index dcb0592418ae..3728c44e5763 100644
--- a/drivers/hwtracing/coresight/coresight-etm-perf.c
+++ b/drivers/hwtracing/coresight/coresight-etm-perf.c
@@ -126,10 +126,10 @@ static void free_sink_buffer(struct etm_event_data *event_data)
 	cpumask_t *mask = &event_data->mask;
 	struct coresight_device *sink;
 
-	if (WARN_ON(cpumask_empty(mask)))
+	if (!event_data->snk_config)
 		return;
 
-	if (!event_data->snk_config)
+	if (WARN_ON(cpumask_empty(mask)))
 		return;
 
 	cpu = cpumask_first(mask);
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


  parent reply	other threads:[~2020-08-20  5:51 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-20  5:46 [PATCH v9 00/24] coresight: allow to build coresight as modules Tingwei Zhang
2020-08-20  5:46 ` Tingwei Zhang
2020-08-20  5:46 ` [PATCH v9 01/24] coresight: cpu_debug: add module name in Kconfig Tingwei Zhang
2020-08-20  5:46   ` Tingwei Zhang
2020-08-20  5:46 ` [PATCH v9 02/24] coresight: cpu_debug: define MODULE_DEVICE_TABLE Tingwei Zhang
2020-08-20  5:46   ` Tingwei Zhang
2020-08-20  5:46 ` [PATCH v9 03/24] coresight: use IS_ENABLED for CONFIGs that may be modules Tingwei Zhang
2020-08-20  5:46   ` Tingwei Zhang
2020-08-20  5:46 ` [PATCH v9 04/24] coresight: add coresight prefix to barrier_pkt Tingwei Zhang
2020-08-20  5:46   ` Tingwei Zhang
2020-08-20  5:46 ` [PATCH v9 05/24] coresight: export global symbols Tingwei Zhang
2020-08-20  5:46   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 06/24] coresight: add try_get_module() in coresight_grab_device() Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 07/24] coresight: stm: allow to build coresight-stm as a module Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` Tingwei Zhang [this message]
2020-08-20  5:47   ` [PATCH v9 08/24] coresight: etm: perf: Fix warning caused by etm_setup_aux failure Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 09/24] coresight: etm3x: allow etm3x to be built as a module Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 10/24] coresight: etm4x: allow etm4x " Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 11/24] coresight: etb: allow etb " Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 12/24] coresight: tpiu: allow tpiu " Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 13/24] coresight: tmc: allow tmc " Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 14/24] coresight: allow funnel driver to be built as module Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20 18:46   ` kernel test robot
2020-08-20  5:47 ` [PATCH v9 15/24] coresight: allow replicator " Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 16/24] coresight: cti: add function to register cti associate ops Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 17/24] coresight: cti: Fix remove sysfs link error Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 18/24] coresight: cti: Fix bug clearing sysfs links on callback Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 19/24] coresight: cti: don't disable ect device if it's not enabled Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 20/24] coresight: cti: increase reference count when enabling cti Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 21/24] coresight: cti: allow cti to be built as a module Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20 22:30   ` kernel test robot
2020-08-20  5:47 ` [PATCH v9 22/24] coresight: tmc-etr: add function to register catu ops Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 23/24] coresight: catu: allow catu drivers to be built as modules Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-08-20  5:47 ` [PATCH v9 24/24] coresight: allow the coresight core driver to be built as a module Tingwei Zhang
2020-08-20  5:47   ` Tingwei Zhang
2020-09-08 17:53 ` [PATCH v9 00/24] coresight: allow to build coresight as modules Mathieu Poirier
2020-09-08 17:53   ` Mathieu Poirier
2020-09-09  2:54   ` Tingwei Zhang
2020-09-09  2:54   ` Tingwei Zhang
     [not found]   ` <0101017470c9475d-00e296fc-1173-4afa-95cb-22ac70d85d5b-000000@us-west-2.amazonses.com>
2020-09-09 16:15     ` Mathieu Poirier
2020-09-09 16:15       ` Mathieu Poirier
2020-09-09 20:45       ` tsoni
2020-09-09 20:45       ` tsoni
     [not found]       ` <c8737d9935a1b7a7372c41492939648d@codeaurora.org>
2020-09-09 23:56         ` Tingwei Zhang
2020-09-09 23:56         ` Tingwei Zhang

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