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drm/amdkfd: Allocate gtt_sa_bitmap in long units 

gtt_sa_bitmap is accessed by bitmap functions, which operate on longs.
Therefore the array should be allocated in long units. Also round up
in case the number of bits is not a multiple of BITS_PER_LONG.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Felix Kuehling 2017-08-15 23:00:11 -04:00 committed by Oded Gabbay
parent 735df2ba1d
commit 8625ff9c0b
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/amd/amdkfd/kfd_device.c
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@ -395,7 +395,7 @@ void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry)
static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size, static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
unsigned int chunk_size) unsigned int chunk_size)
{ {
unsigned int num_of_bits; unsigned int num_of_longs;
BUG_ON(buf_size < chunk_size); BUG_ON(buf_size < chunk_size);
BUG_ON(buf_size == 0); BUG_ON(buf_size == 0);
@ -404,10 +404,10 @@ static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
kfd->gtt_sa_chunk_size = chunk_size; kfd->gtt_sa_chunk_size = chunk_size;
kfd->gtt_sa_num_of_chunks = buf_size / chunk_size; kfd->gtt_sa_num_of_chunks = buf_size / chunk_size;
num_of_bits = kfd->gtt_sa_num_of_chunks / BITS_PER_BYTE; num_of_longs = (kfd->gtt_sa_num_of_chunks + BITS_PER_LONG - 1) /
BUG_ON(num_of_bits == 0); BITS_PER_LONG;
kfd->gtt_sa_bitmap = kzalloc(num_of_bits, GFP_KERNEL); kfd->gtt_sa_bitmap = kcalloc(num_of_longs, sizeof(long), GFP_KERNEL);
if (!kfd->gtt_sa_bitmap) if (!kfd->gtt_sa_bitmap)
return -ENOMEM; return -ENOMEM;