Re: [PATCH 20/59] drm/i915: Don't tag kernel batches as user batches

[Tomas Elf <tomas.elf@intel.com>]

On 19/03/2015 12:30, John.C.Harrison@Intel.com wrote:
> From: John Harrison <John.C.Harrison@Intel.com>
>
> The render state initialisation code does an explicit i915_add_request() call to
> commit the init commands. It was passing in the initialisation batch buffer to
> add_request() as the batch object parameter. However, the batch object entry in
> the request structure (which is all that parameter is used for) is meant for
> keeping track of user generated batch buffers for blame tagging during GPU
> hangs.
>
> This patch clears the batch object parameter so that kernel generated batch
> buffers are not tagged as being user generated.
>
> For: VIZ-5115
> Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
> ---
>   drivers/gpu/drm/i915/i915_gem_render_state.c |    2 +-
>   drivers/gpu/drm/i915/intel_lrc.c             |    2 +-
>   2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem_render_state.c b/drivers/gpu/drm/i915/i915_gem_render_state.c
> index 4418616..a32a4b9 100644
> --- a/drivers/gpu/drm/i915/i915_gem_render_state.c
> +++ b/drivers/gpu/drm/i915/i915_gem_render_state.c
> @@ -173,7 +173,7 @@ int i915_gem_render_state_init(struct intel_engine_cs *ring)
>
>   	i915_vma_move_to_active(i915_gem_obj_to_ggtt(so.obj), ring);
>
> -	__i915_add_request(ring, NULL, so.obj, true);
> +	__i915_add_request(ring, NULL, NULL, true);
>   	/* __i915_add_request moves object to inactive if it fails */
>   out:
>   	i915_gem_render_state_fini(&so);
> diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
> index 4922725..f24ab0c 100644
> --- a/drivers/gpu/drm/i915/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/intel_lrc.c
> @@ -1350,7 +1350,7 @@ static int intel_lr_context_render_state_init(struct intel_engine_cs *ring,
>
>   	i915_vma_move_to_active(i915_gem_obj_to_ggtt(so.obj), ring);
>
> -	__i915_add_request(ring, file, so.obj, true);
> +	__i915_add_request(ring, file, NULL, true);
>   	/* intel_logical_ring_add_request moves object to inactive if it
>   	 * fails */
>   out:
>

Reviewed-by: Tomas Elf <tomas.elf@intel.com>

Thanks,
Tomas
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