[PATCH 1/8] drm/amdkfd: Clean up the data structure in kfd_process

[Felix Kuehling]

From: Yong Zhao <yong.zhao at amd.com>

A list of per-process queues is maintained in the
kfd_process_queue_manager, so the queues array in kfd_process is
redundant and in fact unused.

Signed-off-by: Yong Zhao <yong.zhao at amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_priv.h    |  6 ------
 drivers/gpu/drm/amd/amdkfd/kfd_process.c | 18 ------------------
 2 files changed, 24 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index bf29021..3b0cc20 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -527,12 +527,6 @@ struct kfd_process {
 
 	struct process_queue_manager pqm;
 
-	/* The process's queues. */
-	size_t queue_array_size;
-
-	/* Size is queue_array_size, up to MAX_PROCESS_QUEUES. */
-	struct kfd_queue **queues;
-
 	/*Is the user space process 32 bit?*/
 	bool is_32bit_user_mode;
 
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
index 21d27e5..f871855 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -35,13 +35,6 @@ struct mm_struct;
 #include "kfd_dbgmgr.h"
 
 /*
- * Initial size for the array of queues.
- * The allocated size is doubled each time
- * it is exceeded up to MAX_PROCESS_QUEUES.
- */
-#define INITIAL_QUEUE_ARRAY_SIZE 16
-
-/*
  * List of struct kfd_process (field kfd_process).
  * Unique/indexed by mm_struct*
  */
@@ -187,8 +180,6 @@ static void kfd_process_wq_release(struct work_struct *work)
 
 	mutex_destroy(&p->mutex);
 
-	kfree(p->queues);
-
 	kfree(p);
 
 	kfree(work);
@@ -275,11 +266,6 @@ static struct kfd_process *create_process(const struct task_struct *thread)
 	if (!process)
 		goto err_alloc_process;
 
-	process->queues = kmalloc_array(INITIAL_QUEUE_ARRAY_SIZE,
-					sizeof(process->queues[0]), GFP_KERNEL);
-	if (!process->queues)
-		goto err_alloc_queues;
-
 	process->pasid = kfd_pasid_alloc();
 	if (process->pasid == 0)
 		goto err_alloc_pasid;
@@ -302,8 +288,6 @@ static struct kfd_process *create_process(const struct task_struct *thread)
 
 	process->lead_thread = thread->group_leader;
 
-	process->queue_array_size = INITIAL_QUEUE_ARRAY_SIZE;
-
 	INIT_LIST_HEAD(&process->per_device_data);
 
 	kfd_event_init_process(process);
@@ -332,8 +316,6 @@ static struct kfd_process *create_process(const struct task_struct *thread)
 err_alloc_doorbells:
 	kfd_pasid_free(process->pasid);
 err_alloc_pasid:
-	kfree(process->queues);
-err_alloc_queues:
 	kfree(process);
 err_alloc_process:
 	return ERR_PTR(err);
-- 
2.7.4