[PATCH v2 1/2] drm/amdkfd: Use bitmap_zalloc() when applicable

[Christophe JAILLET]

'doorbell_bitmap' and 'queue_slot_bitmap' are bitmaps. So use
'bitmap_zalloc()' to simplify code, improve the semantic and avoid some
open-coded arithmetic in allocator arguments.

Also change the corresponding 'kfree()' into 'bitmap_free()' to keep
consistency.

Reviewed-by: Felix Kuehling <felix.kuehl...@amd.com>
Signed-off-by: Christophe JAILLET <christophe.jail...@wanadoo.fr>
---
v1 --> v2: Compile tested :)
           Add a missing ',' (kernel test robot)
           Add kfd_process_queue_manager.c (Felix Kuehling)
---
 drivers/gpu/drm/amd/amdkfd/kfd_process.c               | 7 +++----
 drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 7 +++----
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
index d4c8a6948a9f..67bb1654becc 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -1011,7 +1011,7 @@ static void kfd_process_destroy_pdds(struct kfd_process 
*p)
                        free_pages((unsigned long)pdd->qpd.cwsr_kaddr,
                                get_order(KFD_CWSR_TBA_TMA_SIZE));
 
-               kfree(pdd->qpd.doorbell_bitmap);
+               bitmap_free(pdd->qpd.doorbell_bitmap);
                idr_destroy(&pdd->alloc_idr);
 
                kfd_free_process_doorbells(pdd->dev, pdd->doorbell_index);
@@ -1433,9 +1433,8 @@ static int init_doorbell_bitmap(struct qcm_process_device 
*qpd,
        if (!KFD_IS_SOC15(dev))
                return 0;
 
-       qpd->doorbell_bitmap =
-               kzalloc(DIV_ROUND_UP(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
-                                    BITS_PER_BYTE), GFP_KERNEL);
+       qpd->doorbell_bitmap = bitmap_zalloc(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
+                                            GFP_KERNEL);
        if (!qpd->doorbell_bitmap)
                return -ENOMEM;
 
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
index 4f8464658daf..c5f5a25c6dcc 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -135,9 +135,8 @@ void kfd_process_dequeue_from_all_devices(struct 
kfd_process *p)
 int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p)
 {
        INIT_LIST_HEAD(&pqm->queues);
-       pqm->queue_slot_bitmap =
-                       kzalloc(DIV_ROUND_UP(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
-                                       BITS_PER_BYTE), GFP_KERNEL);
+       pqm->queue_slot_bitmap = 
bitmap_zalloc(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
+                                              GFP_KERNEL);
        if (!pqm->queue_slot_bitmap)
                return -ENOMEM;
        pqm->process = p;
@@ -159,7 +158,7 @@ void pqm_uninit(struct process_queue_manager *pqm)
                kfree(pqn);
        }
 
-       kfree(pqm->queue_slot_bitmap);
+       bitmap_free(pqm->queue_slot_bitmap);
        pqm->queue_slot_bitmap = NULL;
 }
 
-- 
2.30.2