Commit f3766830 authored by Christophe JAILLET's avatar Christophe JAILLET Committed by Alex Deucher
Browse files

drm/amdkfd: Slighly optimize 'init_doorbell_bitmap()' 



The 'doorbell_bitmap' bitmap has just been allocated. So we can use the
non-atomic '__set_bit()' function to save a few cycles as no concurrent
access can happen.

Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent b9dd6fbd

drivers/gpu/drm/amd/amdkfd/kfd_process.c

+3 −3
Original line number Diff line number Diff line
@@ -1446,8 +1446,8 @@ static int init_doorbell_bitmap(struct qcm_process_device *qpd, 


	for (i = 0; i < KFD_MAX_NUM_OF_QUEUES_PER_PROCESS / 2; i++) {

		if (i >= range_start && i <= range_end) {

			set_bit(i, qpd->doorbell_bitmap);

			set_bit(i + KFD_QUEUE_DOORBELL_MIRROR_OFFSET,

			__set_bit(i, qpd->doorbell_bitmap);

			__set_bit(i + KFD_QUEUE_DOORBELL_MIRROR_OFFSET,

				  qpd->doorbell_bitmap);

		}

	}