[PATCH 3/5] drm/amdgpu:implement guilty pointer

[Liu, Monk]

Don't set this directly, make it a parameter of amd_sched_entity_init().

And please split up the patches differently.

First all changes to the scheduler, including the guilty marking.

Then the changes to amdgpu.


[ML] that way the first patch will break kernel from compiling because you change the interface of entity_init without changing all place 
Calling this interface 

I suggest just use one patch

-----Original Message-----
From: Christian König [mailto:ckoenig.leichtzumerken at gmail.com] 
Sent: 2017年10月20日 17:09
To: Liu, Monk <Monk.Liu at amd.com>; amd-gfx at lists.freedesktop.org
Subject: Re: [PATCH 3/5] drm/amdgpu:implement guilty pointer

Am 20.10.2017 um 05:33 schrieb Monk Liu:
> for user context there will be a guilty pointer in entity that points 
> to the guilty member of its context, thus we cant track if a given 
> entity is not from kernel ctx and if it is already marked guilty.
>
> Change-Id: Ie0a30830d89f52a6c4a514e67206140698a46367
> Signed-off-by: Monk Liu <Monk.Liu at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu.h           | 1 +
>   drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c       | 1 +
>   drivers/gpu/drm/amd/scheduler/gpu_scheduler.h | 1 +
>   3 files changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h 
> b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 774edc1..6a4178b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -744,6 +744,7 @@ struct amdgpu_ctx {
>   	enum amd_sched_priority init_priority;
>   	enum amd_sched_priority override_priority;
>   	struct mutex            lock;
> +	atomic_t	guilty;
>   };
>   
>   struct amdgpu_ctx_mgr {
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c 
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> index c184468..d822e95 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> @@ -93,6 +93,7 @@ static int amdgpu_ctx_init(struct amdgpu_device *adev,
>   					  rq, amdgpu_sched_jobs);
>   		if (r)
>   			goto failed;
> +		ctx->rings[i].entity.guilty = &ctx->guilty;

Don't set this directly, make it a parameter of amd_sched_entity_init().

And please split up the patches differently.

First all changes to the scheduler, including the guilty marking.

Then the changes to amdgpu.

Regards,
Christian.

>   	}
>   
>   	r = amdgpu_queue_mgr_init(adev, &ctx->queue_mgr); diff --git 
> a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h 
> b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
> index 1dac7bc..2d59fc5 100644
> --- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
> +++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
> @@ -50,6 +50,7 @@ struct amd_sched_entity {
>   
>   	struct dma_fence		*dependency;
>   	struct dma_fence_cb		cb;
> +	atomic_t	*guilty; /* points to ctx's guilty */
>   };
>   
>   /**