Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Received-SPF: Pass (protection.outlook.com: domain of amd.com designates
 165.204.84.17 as permitted sender) receiver=protection.outlook.com;
 client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C
From:   Arvind Yadav <Arvind.Yadav@amd.com>
To:     <Christian.Koenig@amd.com>, <andrey.grodzovsky@amd.com>,
        <shashank.sharma@amd.com>, <amaranath.somalapuram@amd.com>,
        <Arunpravin.PaneerSelvam@amd.com>, <sumit.semwal@linaro.org>,
        <gustavo@padovan.org>, <airlied@linux.ie>, <daniel@ffwll.ch>,
        <linux-media@vger.kernel.org>, <dri-devel@lists.freedesktop.org>,
        <linaro-mm-sig@lists.linaro.org>, <linux-kernel@vger.kernel.org>
CC:     Arvind Yadav <Arvind.Yadav@amd.com>
Subject: [PATCH v2 3/4] dma-buf: enable signaling for selftest fence on debug
Date:   Mon, 5 Sep 2022 22:05:01 +0530
Message-ID: <20220905163502.4032-4-Arvind.Yadav@amd.com>
In-Reply-To: <20220905163502.4032-1-Arvind.Yadav@amd.com>
References: <20220905163502.4032-1-Arvind.Yadav@amd.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Sep 2022 16:35:58.0901
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 84eb3842-1a79-446d-5a5e-08da8f5cb620
X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com]
X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0000C403.namprd05.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW3PR12MB4476
X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,
        RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS,T_SCC_BODY_TEXT_LINE
        autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Here's on debug enabling software signaling for selftest.

Signed-off-by: Arvind Yadav <Arvind.Yadav@amd.com>
---

Changes in v1 :
1- Addressing Christian's comment to remove unnecessary callback.
2- Replacing CONFIG_DEBUG_WW_MUTEX_SLOWPATH instead of CONFIG_DEBUG_FS.
3- The version of this patch is also changed and previously
it was [PATCH 4/4]

---
 drivers/dma-buf/st-dma-fence-chain.c  |  8 +++++
 drivers/dma-buf/st-dma-fence-unwrap.c | 44 +++++++++++++++++++++++++++
 drivers/dma-buf/st-dma-fence.c        | 25 ++++++++++++++-
 drivers/dma-buf/st-dma-resv.c         | 20 ++++++++++++
 4 files changed, 96 insertions(+), 1 deletion(-)

diff --git a/drivers/dma-buf/st-dma-fence-chain.c b/drivers/dma-buf/st-dma-fence-chain.c
index 8ce1ea59d31b..d3070f8a393c 100644
--- a/drivers/dma-buf/st-dma-fence-chain.c
+++ b/drivers/dma-buf/st-dma-fence-chain.c
@@ -87,6 +87,10 @@ static int sanitycheck(void *arg)
 	if (!chain)
 		err = -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(chain);
+#endif
+
 	dma_fence_signal(f);
 	dma_fence_put(f);
 
@@ -143,6 +147,10 @@ static int fence_chains_init(struct fence_chains *fc, unsigned int count,
 		}
 
 		fc->tail = fc->chains[i];
+
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+		dma_fence_enable_sw_signaling(fc->chains[i]);
+#endif
 	}
 
 	fc->chain_length = i;
diff --git a/drivers/dma-buf/st-dma-fence-unwrap.c b/drivers/dma-buf/st-dma-fence-unwrap.c
index 4105d5ea8dde..b76cdd9ee0c7 100644
--- a/drivers/dma-buf/st-dma-fence-unwrap.c
+++ b/drivers/dma-buf/st-dma-fence-unwrap.c
@@ -102,6 +102,10 @@ static int sanitycheck(void *arg)
 	if (!f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
+
 	array = mock_array(1, f);
 	if (!array)
 		return -ENOMEM;
@@ -124,12 +128,20 @@ static int unwrap_array(void *arg)
 	if (!f1)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f1);
+#endif
+
 	f2 = mock_fence();
 	if (!f2) {
 		dma_fence_put(f1);
 		return -ENOMEM;
 	}
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f2);
+#endif
+
 	array = mock_array(2, f1, f2);
 	if (!array)
 		return -ENOMEM;
@@ -164,12 +176,20 @@ static int unwrap_chain(void *arg)
 	if (!f1)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f1);
+#endif
+
 	f2 = mock_fence();
 	if (!f2) {
 		dma_fence_put(f1);
 		return -ENOMEM;
 	}
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f2);
+#endif
+
 	chain = mock_chain(f1, f2);
 	if (!chain)
 		return -ENOMEM;
@@ -204,12 +224,20 @@ static int unwrap_chain_array(void *arg)
 	if (!f1)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f1);
+#endif
+
 	f2 = mock_fence();
 	if (!f2) {
 		dma_fence_put(f1);
 		return -ENOMEM;
 	}
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f2);
+#endif
+
 	array = mock_array(2, f1, f2);
 	if (!array)
 		return -ENOMEM;
@@ -248,12 +276,20 @@ static int unwrap_merge(void *arg)
 	if (!f1)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f1);
+#endif
+
 	f2 = mock_fence();
 	if (!f2) {
 		err = -ENOMEM;
 		goto error_put_f1;
 	}
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f2);
+#endif
+
 	f3 = dma_fence_unwrap_merge(f1, f2);
 	if (!f3) {
 		err = -ENOMEM;
@@ -296,10 +332,18 @@ static int unwrap_merge_complex(void *arg)
 	if (!f1)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f1);
+#endif
+
 	f2 = mock_fence();
 	if (!f2)
 		goto error_put_f1;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f2);
+#endif
+
 	f3 = dma_fence_unwrap_merge(f1, f2);
 	if (!f3)
 		goto error_put_f2;
diff --git a/drivers/dma-buf/st-dma-fence.c b/drivers/dma-buf/st-dma-fence.c
index c8a12d7ad71a..b7880d8374db 100644
--- a/drivers/dma-buf/st-dma-fence.c
+++ b/drivers/dma-buf/st-dma-fence.c
@@ -101,7 +101,9 @@ static int sanitycheck(void *arg)
 	f = mock_fence();
 	if (!f)
 		return -ENOMEM;
-
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
 	dma_fence_signal(f);
 	dma_fence_put(f);
 
@@ -117,6 +119,9 @@ static int test_signaling(void *arg)
 	if (!f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
 	if (dma_fence_is_signaled(f)) {
 		pr_err("Fence unexpectedly signaled on creation\n");
 		goto err_free;
@@ -190,6 +195,9 @@ static int test_late_add_callback(void *arg)
 	if (!f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
 	dma_fence_signal(f);
 
 	if (!dma_fence_add_callback(f, &cb.cb, simple_callback)) {
@@ -282,6 +290,9 @@ static int test_status(void *arg)
 	if (!f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
 	if (dma_fence_get_status(f)) {
 		pr_err("Fence unexpectedly has signaled status on creation\n");
 		goto err_free;
@@ -308,6 +319,9 @@ static int test_error(void *arg)
 	if (!f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
 	dma_fence_set_error(f, -EIO);
 
 	if (dma_fence_get_status(f)) {
@@ -337,6 +351,9 @@ static int test_wait(void *arg)
 	if (!f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
 	if (dma_fence_wait_timeout(f, false, 0) != -ETIME) {
 		pr_err("Wait reported complete before being signaled\n");
 		goto err_free;
@@ -379,6 +396,9 @@ static int test_wait_timeout(void *arg)
 	if (!wt.f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(wt.f);
+#endif
 	if (dma_fence_wait_timeout(wt.f, false, 1) != -ETIME) {
 		pr_err("Wait reported complete before being signaled\n");
 		goto err_free;
@@ -458,6 +478,9 @@ static int thread_signal_callback(void *arg)
 			break;
 		}
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+		dma_fence_enable_sw_signaling(f1);
+#endif
 		rcu_assign_pointer(t->fences[t->id], f1);
 		smp_wmb();
 
diff --git a/drivers/dma-buf/st-dma-resv.c b/drivers/dma-buf/st-dma-resv.c
index 813779e3c9be..bd7ef58f8b24 100644
--- a/drivers/dma-buf/st-dma-resv.c
+++ b/drivers/dma-buf/st-dma-resv.c
@@ -45,6 +45,10 @@ static int sanitycheck(void *arg)
 	if (!f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
+
 	dma_fence_signal(f);
 	dma_fence_put(f);
 
@@ -69,6 +73,10 @@ static int test_signaling(void *arg)
 	if (!f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
+
 	dma_resv_init(&resv);
 	r = dma_resv_lock(&resv, NULL);
 	if (r) {
@@ -114,6 +122,10 @@ static int test_for_each(void *arg)
 	if (!f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
+
 	dma_resv_init(&resv);
 	r = dma_resv_lock(&resv, NULL);
 	if (r) {
@@ -173,6 +185,10 @@ static int test_for_each_unlocked(void *arg)
 	if (!f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
+
 	dma_resv_init(&resv);
 	r = dma_resv_lock(&resv, NULL);
 	if (r) {
@@ -244,6 +260,10 @@ static int test_get_fences(void *arg)
 	if (!f)
 		return -ENOMEM;
 
+#ifdef CONFIG_DEBUG_WW_MUTEX_SLOWPATH
+	dma_fence_enable_sw_signaling(f);
+#endif
+
 	dma_resv_init(&resv);
 	r = dma_resv_lock(&resv, NULL);
 	if (r) {
-- 
2.25.1