drm/amdkfd: Add kfd/rls entry to debugfs

This dumps runlist IBs of all GPUs.

Change-Id: I27c876559f45cf8bc3d9742e1a2007431181e45f
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>

4 files changed, 50 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 58ed9794679b..666853e0cc36 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -371,6 +371,12 @@ static void kfd_debugfs_init(struct kfd_dev *kfd)
 				  &kfd_debugfs_fops);
 	if (ent == NULL)
 		dev_warn(kfd_device, "Failed to create hqds in kfd debugfs\n");
+
+	ent = debugfs_create_file("rls", S_IFREG | S_IRUGO, kfd->debugfs_root,
+				  kfd_debugfs_rls_by_device,
+				  &kfd_debugfs_fops);
+	if (ent == NULL)
+		dev_warn(kfd_device, "Failed to create rls in kfd debugfs\n");
 }
 
 static void kfd_debugfs_fini(struct kfd_dev *kfd)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
index ad4466d98b12..616c1901fc28 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
@@ -449,6 +449,7 @@ static int pm_create_runlist_ib(struct packet_manager *pm,
 		return retval;
 
 	*rl_size_bytes = alloc_size_bytes;
+	pm->ib_size_bytes = alloc_size_bytes;
 
 	pr_debug("kfd: In func %s\n", __func__);
 	pr_debug("kfd: building runlist ib process count: %d queues count %d\n",
@@ -831,3 +832,17 @@ void pm_release_ib(struct packet_manager *pm)
 	mutex_unlock(&pm->lock);
 }
 
+int pm_debugfs_runlist(struct seq_file *m, void *data)
+{
+	struct packet_manager *pm = data;
+
+	if (!pm->allocated) {
+		seq_puts(m, "  No active runlist\n");
+		return 0;
+	}
+
+	seq_hex_dump(m, "  ", DUMP_PREFIX_OFFSET, 32, 4,
+		     pm->ib_buffer_obj->cpu_ptr, pm->ib_size_bytes, false);
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index 80128e90e4bc..a222efcc0d0a 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -830,6 +830,7 @@ struct packet_manager {
 	struct mutex lock;
 	bool allocated;
 	struct kfd_mem_obj *ib_buffer_obj;
+	unsigned ib_size_bytes;
 
 	struct packet_manager_firmware *pmf;
 };
@@ -924,6 +925,8 @@ int kfd_debugfs_mqds_by_process(struct seq_file *m, void *data);
 int pqm_debugfs_mqds(struct seq_file *m, void *data);
 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data);
 int device_queue_manager_debugfs_hqds(struct seq_file *m, void *data);
+int kfd_debugfs_rls_by_device(struct seq_file *m, void *data);
+int pm_debugfs_runlist(struct seq_file *m, void *data);
 
 #endif
 
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index 99ae62592c58..b2f2a672af2b 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -34,6 +34,7 @@
 #include "kfd_priv.h"
 #include "kfd_crat.h"
 #include "kfd_topology.h"
+#include "kfd_device_queue_manager.h"
 
 /* topology_device_list - Master list of all topology devices */
 struct list_head topology_device_list;
@@ -1267,3 +1268,28 @@ int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data)
 
 	return r;
 }
+
+int kfd_debugfs_rls_by_device(struct seq_file *m, void *data)
+{
+	struct kfd_topology_device *dev;
+	unsigned i = 0;
+	int r = 0;
+
+	down_read(&topology_lock);
+
+	list_for_each_entry(dev, &topology_device_list, list) {
+		if (!dev->gpu) {
+			i++;
+			continue;
+		}
+
+		seq_printf(m, "Node %u, gpu_id %x:\n", i++, dev->gpu->id);
+		r = pm_debugfs_runlist(m, &dev->gpu->dqm->packets);
+		if (r != 0)
+			break;
+	}
+
+	up_read(&topology_lock);
+
+	return r;
+}