drm/amdkfd: Add debugfs support to KFD
This commit adds several debugfs entries for kfd:
kfd/hqds: dumps all HQDs on all GPUs for KFD-controlled compute and
SDMA RLC queues
kfd/mqds: dumps all MQDs of all KFD processes on all GPUs
kfd/rls: dumps HWS runlists on all GPUs
Signed-off-by: Yong Zhao <yong.zhao@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
index 39f4c19..99c18ee 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -620,3 +620,32 @@ int kfd_reserved_mem_mmap(struct kfd_process *process,
PFN_DOWN(__pa(qpd->cwsr_kaddr)),
KFD_CWSR_TBA_TMA_SIZE, vma->vm_page_prot);
}
+
+#if defined(CONFIG_DEBUG_FS)
+
+int kfd_debugfs_mqds_by_process(struct seq_file *m, void *data)
+{
+ struct kfd_process *p;
+ unsigned int temp;
+ int r = 0;
+
+ int idx = srcu_read_lock(&kfd_processes_srcu);
+
+ hash_for_each_rcu(kfd_processes_table, temp, p, kfd_processes) {
+ seq_printf(m, "Process %d PASID %d:\n",
+ p->lead_thread->tgid, p->pasid);
+
+ mutex_lock(&p->mutex);
+ r = pqm_debugfs_mqds(m, &p->pqm);
+ mutex_unlock(&p->mutex);
+
+ if (r)
+ break;
+ }
+
+ srcu_read_unlock(&kfd_processes_srcu, idx);
+
+ return r;
+}
+
+#endif