From: Christophe JAILLET Date: Tue, 23 Nov 2021 20:46:58 +0000 (+0100) Subject: drm/amdkfd: Slighly optimize 'init_doorbell_bitmap()' X-Git-Tag: v6.1-rc5~2161^2~15^2~144 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f37668301e362a0ed4b0b2ec6866f0a02fefa4db;p=platform%2Fkernel%2Flinux-starfive.git 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: Felix Kuehling Signed-off-by: Christophe JAILLET Signed-off-by: Felix Kuehling Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index 67bb1654becc..9158f9754a24 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -1446,9 +1446,9 @@ 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, - qpd->doorbell_bitmap); + __set_bit(i, qpd->doorbell_bitmap); + __set_bit(i + KFD_QUEUE_DOORBELL_MIRROR_OFFSET, + qpd->doorbell_bitmap); } }