linux-kernel - Re: [PATCH] drm/amdgpu:use kvcalloc instead of kvmalloc

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Message-ID: <e18c2147-cc19-7493-5feb-de28e3102d3f@gmail.com>
Date:   Thu, 24 Jun 2021 15:14:11 +0200
From:   Christian König <ckoenig.leichtzumerken@...il.com>
To:     huqiqiao <huqiqiao@...ontech.com>, airlied@...ux.ie,
        daniel@...ll.ch
Cc:     dri-devel@...ts.freedesktop.org, amd-gfx@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
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 <huqiqiao@...ontech.com>
> ---
>   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;
>   	}