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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 <Felix.Kuehling@amd.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christophe JAILLET 2021-11-23 21:46:58 +01:00 committed by Alex Deucher
parent b9dd6fbd15
commit f37668301e
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/amd/amdkfd/kfd_process.c
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@ -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);
}
}