linux-kernel - Re: [PATCH] drm/amdgpu: cleanup coding style in amdgpu_amdkfd

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Message-ID: <18083c05-7636-2155-610b-2d1347f8585f@amd.com>
Date:   Tue, 6 Sep 2022 09:46:10 -0400
From:   Felix Kuehling <felix.kuehling@....com>
To:     Jingyu Wang <jingyuwang_vip@....com>, alexander.deucher@....com,
        christian.koenig@....com, Xinhui.Pan@....com, airlied@...ux.ie,
        daniel@...ll.ch
Cc:     amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/amdgpu: cleanup coding style in amdgpu_amdkfd_gpuvm.c


Am 2022-09-05 um 04:38 schrieb Jingyu Wang:
> Fix everything checkpatch.pl complained about in amdgpu_amdkfd_gpuvm.c
>
> Signed-off-by: Jingyu Wang <jingyuwang_vip@....com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
> index cbd593f7d553..eff596c60c89 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: MIT

I'm not sure if this is correct. We've used "GPL-2.0 OR MIT" in KFD. In 
amdgpu there is currently a mix of licenses. Alex, do you want to make a 
call on a consistent one to use in amdgpu?

Other than that, this patch is

Reviewed-by: Felix Kuehling <Felix.Kuehling@....com>


>   /*
>    * Copyright 2014-2018 Advanced Micro Devices, Inc.
>    *
> @@ -1612,6 +1613,7 @@ size_t amdgpu_amdkfd_get_available_memory(struct amdgpu_device *adev)
>   	uint64_t reserved_for_pt =
>   		ESTIMATE_PT_SIZE(amdgpu_amdkfd_total_mem_size);
>   	size_t available;
> +
>   	spin_lock(&kfd_mem_limit.mem_limit_lock);
>   	available = adev->gmc.real_vram_size
>   		- adev->kfd.vram_used_aligned
> @@ -2216,7 +2218,7 @@ int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct amdgpu_device *adev,
>   {
>   	if (atomic_read(&adev->gmc.vm_fault_info_updated) == 1) {
>   		*mem = *adev->gmc.vm_fault_info;
> -		mb();
> +		mb(); /* make sure read happened */
>   		atomic_set(&adev->gmc.vm_fault_info_updated, 0);
>   	}
>   	return 0;
>
> base-commit: e47eb90a0a9ae20b82635b9b99a8d0979b757ad8