[PATCH v4 04/24] drm/amdkfd: add pc sampling mutex

[James Zhu <James.Zhu@xxxxxxx>]

Add pc sampling mutex per node, and do init/destroy in node init.

Signed-off-by: James Zhu <James.Zhu@xxxxxxx>
---
 drivers/gpu/drm/amd/amdkfd/kfd_device.c | 12 ++++++++++++
 drivers/gpu/drm/amd/amdkfd/kfd_priv.h   |  7 +++++++
 2 files changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 0a9cf9dfc224..0e24e011f66b 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -533,6 +533,16 @@ static void kfd_smi_init(struct kfd_node *dev)
 	spin_lock_init(&dev->smi_lock);
 }
 
+static void kfd_pc_sampling_init(struct kfd_node *dev)
+{
+	mutex_init(&dev->pcs_data.mutex);
+}
+
+static void kfd_pc_sampling_exit(struct kfd_node *dev)
+{
+	mutex_destroy(&dev->pcs_data.mutex);
+}
+
 static int kfd_init_node(struct kfd_node *node)
 {
 	int err = -1;
@@ -563,6 +573,7 @@ static int kfd_init_node(struct kfd_node *node)
 	}
 
 	kfd_smi_init(node);
+	kfd_pc_sampling_init(node);
 
 	return 0;
 
@@ -593,6 +604,7 @@ static void kfd_cleanup_nodes(struct kfd_dev *kfd, unsigned int num_nodes)
 		kfd_topology_remove_device(knode);
 		if (knode->gws)
 			amdgpu_amdkfd_free_gws(knode->adev, knode->gws);
+		kfd_pc_sampling_exit(knode);
 		kfree(knode);
 		kfd->nodes[i] = NULL;
 	}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index ae9a41670909..f55195fea3df 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -269,6 +269,11 @@ struct kfd_vmid_info {
 
 struct kfd_dev;
 
+/* Per device PC Sampling data */
+struct kfd_dev_pc_sampling {
+	struct mutex mutex;
+};
+
 struct kfd_node {
 	unsigned int node_id;
 	struct amdgpu_device *adev;     /* Duplicated here along with keeping
@@ -322,6 +327,8 @@ struct kfd_node {
 	struct kfd_local_mem_info local_mem_info;
 
 	struct kfd_dev *kfd;
+
+	struct kfd_dev_pc_sampling pcs_data;
 };
 
 struct kfd_dev {
-- 
2.25.1