2021-06-23 09:14:49

by huqiqiao

Subject: [PATCH] drm/amdgpu:use kvcalloc instead of kvmalloc_array

kvmalloc_array + __GFP_ZERO is the same with kvcalloc.

Signed-off-by: huqiqiao <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 9acee4a5b2ba..50edc73525b0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -908,9 +908,8 @@ static int amdgpu_vm_alloc_pts(struct amdgpu_device *adev,
unsigned num_entries;

num_entries = amdgpu_vm_num_entries(adev, cursor->level);
- entry->entries = kvmalloc_array(num_entries,
- sizeof(*entry->entries),
- GFP_KERNEL | __GFP_ZERO);
+ entry->entries = kvcalloc(num_entries,
+ sizeof(*entry->entries), GFP_KERNEL);
if (!entry->entries)
return -ENOMEM;
}
--
2.11.0

2021-06-24 13:15:39

by Christian König

Subject: Re: [PATCH] drm/amdgpu:use kvcalloc instead of kvmalloc_array

Am 23.06.21 um 11:12 schrieb huqiqiao:
> kvmalloc_array + __GFP_ZERO is the same with kvcalloc.
>
> Signed-off-by: huqiqiao <[email protected]>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> index 9acee4a5b2ba..50edc73525b0 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> @@ -908,9 +908,8 @@ static int amdgpu_vm_alloc_pts(struct amdgpu_device *adev,
> unsigned num_entries;
>
> num_entries = amdgpu_vm_num_entries(adev, cursor->level);
> - entry->entries = kvmalloc_array(num_entries,
> - sizeof(*entry->entries),
> - GFP_KERNEL | __GFP_ZERO);
> + entry->entries = kvcalloc(num_entries,
> + sizeof(*entry->entries), GFP_KERNEL);

Sounds like a good idea in general, but the indentation on the second
line seems to be of.

Christian.

> if (!entry->entries)
> return -ENOMEM;
> }