linux-kernel - Re: [PATCH] drm/msm: Add obj flags to gpu devcoredump

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Date: Wed, 15 May 2024 00:11:55 +0530
From: Akhil P Oommen <quic_akhilpo@...cinc.com>
To: Rob Clark <robdclark@...il.com>
CC: <dri-devel@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        <freedreno@...ts.freedesktop.org>, Rob Clark <robdclark@...omium.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov
	<dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten
	<marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, "Daniel
 Vetter" <daniel@...ll.ch>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        "Bjorn
 Andersson" <quic_bjorande@...cinc.com>,
        Connor Abbott <cwabbott0@...il.com>,
        Ruan Jinjie <ruanjinjie@...wei.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/msm: Add obj flags to gpu devcoredump

On Mon, May 13, 2024 at 08:51:47AM -0700, Rob Clark wrote:
> From: Rob Clark <robdclark@...omium.org>
> 
> When debugging faults, it is useful to know how the BO is mapped (cached
> vs WC, gpu readonly, etc).
> 
> Signed-off-by: Rob Clark <robdclark@...omium.org>

Reviewed-by: Akhil P Oommen <quic_akhilpo@...cinc.com>

-Akhil

> ---
>  drivers/gpu/drm/msm/adreno/adreno_gpu.c | 1 +
>  drivers/gpu/drm/msm/msm_gpu.c           | 6 ++++--
>  drivers/gpu/drm/msm/msm_gpu.h           | 1 +
>  3 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> index b7bbef2eeff4..d9ea15994ae9 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> @@ -887,6 +887,7 @@ void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
>  			drm_printf(p, "  - iova: 0x%016llx\n",
>  				state->bos[i].iova);
>  			drm_printf(p, "    size: %zd\n", state->bos[i].size);
> +			drm_printf(p, "    flags: 0x%x\n", state->bos[i].flags);
>  			drm_printf(p, "    name: %-32s\n", state->bos[i].name);
>  
>  			adreno_show_object(p, &state->bos[i].data,
> diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
> index d14ec058906f..ceaee23a4d22 100644
> --- a/drivers/gpu/drm/msm/msm_gpu.c
> +++ b/drivers/gpu/drm/msm/msm_gpu.c
> @@ -222,14 +222,16 @@ static void msm_gpu_crashstate_get_bo(struct msm_gpu_state *state,
>  		struct drm_gem_object *obj, u64 iova, bool full)
>  {
>  	struct msm_gpu_state_bo *state_bo = &state->bos[state->nr_bos];
> +	struct msm_gem_object *msm_obj = to_msm_bo(obj);
>  
>  	/* Don't record write only objects */
>  	state_bo->size = obj->size;
> +	state_bo->flags = msm_obj->flags;
>  	state_bo->iova = iova;
>  
> -	BUILD_BUG_ON(sizeof(state_bo->name) != sizeof(to_msm_bo(obj)->name));
> +	BUILD_BUG_ON(sizeof(state_bo->name) != sizeof(msm_obj->name));
>  
> -	memcpy(state_bo->name, to_msm_bo(obj)->name, sizeof(state_bo->name));
> +	memcpy(state_bo->name, msm_obj->name, sizeof(state_bo->name));
>  
>  	if (full) {
>  		void *ptr;
> diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
> index 685470b84708..05bb247e7210 100644
> --- a/drivers/gpu/drm/msm/msm_gpu.h
> +++ b/drivers/gpu/drm/msm/msm_gpu.h
> @@ -527,6 +527,7 @@ struct msm_gpu_submitqueue {
>  struct msm_gpu_state_bo {
>  	u64 iova;
>  	size_t size;
> +	u32 flags;
>  	void *data;
>  	bool encoded;
>  	char name[32];
> -- 
> 2.45.0
>