On Tue, May 17, 2016 at 04:19:05AM -0400, Zhi Wang wrote: > This patch introduces an option for configuring ring buffer size during > context creation. If no ring buffer size is specified, the default size > (4 * PAGE_SIZE) will be used. > > Signed-off-by: Zhi Wang <[email protected]> > --- > drivers/gpu/drm/i915/i915_drv.h | 1 + > drivers/gpu/drm/i915/intel_lrc.c | 8 ++++++-- > 2 files changed, 7 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h > index ea04352..cc83f2d 100644 > --- a/drivers/gpu/drm/i915/i915_drv.h > +++ b/drivers/gpu/drm/i915/i915_drv.h > @@ -883,6 +883,7 @@ struct intel_context { > uint32_t *lrc_reg_state; > bool initialised; > } engine[I915_NUM_ENGINES]; > + u32 ring_buffer_size; > > struct list_head link; > }; > diff --git a/drivers/gpu/drm/i915/intel_lrc.c > b/drivers/gpu/drm/i915/intel_lrc.c > index db10c96..d52c806 100644 > --- a/drivers/gpu/drm/i915/intel_lrc.c > +++ b/drivers/gpu/drm/i915/intel_lrc.c > @@ -2495,7 +2495,7 @@ static int execlists_context_deferred_alloc(struct > intel_context *ctx, > struct intel_engine_cs *engine) > { > struct drm_i915_gem_object *ctx_obj; > - uint32_t context_size; > + uint32_t context_size, ring_buffer_size; > struct intel_ringbuffer *ringbuf; > int ret; > > @@ -2513,7 +2513,11 @@ static int execlists_context_deferred_alloc(struct > intel_context *ctx, > return PTR_ERR(ctx_obj); > } > > - ringbuf = intel_engine_create_ringbuffer(engine, 4 * PAGE_SIZE); > + ring_buffer_size = ctx->ring_buffer_size; > + if (!ring_buffer_size) > + ring_buffer_size = 4 * PAGE_SIZE;
Just don't let it be zero (during construction). -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
