On to, 2016-06-02 at 12:36 -0400, Zhi Wang wrote: > This patch introduces an option for configuring the ring buffer size > of a LRC context after the context creation. > > Signed-off-by: Zhi Wang <[email protected]>
Reviewed-by: Joonas Lahtinen <[email protected]> > --- > drivers/gpu/drm/i915/i915_drv.h | 1 + > drivers/gpu/drm/i915/i915_gem_context.c | 1 + > drivers/gpu/drm/i915/intel_lrc.c | 3 ++- > 3 files changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h > index bdf499f..a4af035 100644 > --- a/drivers/gpu/drm/i915/i915_drv.h > +++ b/drivers/gpu/drm/i915/i915_drv.h > @@ -878,6 +878,7 @@ struct i915_gem_context { > int pin_count; > bool initialised; > } engine[I915_NUM_ENGINES]; > + u32 lrc_ring_buffer_size; > > struct list_head link; > > diff --git a/drivers/gpu/drm/i915/i915_gem_context.c > b/drivers/gpu/drm/i915/i915_gem_context.c > index a3b11aa..1663981 100644 > --- a/drivers/gpu/drm/i915/i915_gem_context.c > +++ b/drivers/gpu/drm/i915/i915_gem_context.c > @@ -295,6 +295,7 @@ __create_hw_context(struct drm_device *dev, > ctx->remap_slice = ALL_L3_SLICES(dev_priv); > > ctx->hang_stats.ban_period_seconds = DRM_I915_CTX_BAN_PERIOD; > + ctx->lrc_ring_buffer_size = 4 * PAGE_SIZE; > > return ctx; > > diff --git a/drivers/gpu/drm/i915/intel_lrc.c > b/drivers/gpu/drm/i915/intel_lrc.c > index 5c191a1..72a0cca 100644 > --- a/drivers/gpu/drm/i915/intel_lrc.c > +++ b/drivers/gpu/drm/i915/intel_lrc.c > @@ -2484,7 +2484,8 @@ static int execlists_context_deferred_alloc(struct > i915_gem_context *ctx, > return PTR_ERR(ctx_obj); > } > > - ringbuf = intel_engine_create_ringbuffer(engine, 4 * PAGE_SIZE); > + ringbuf = intel_engine_create_ringbuffer(engine, > + ctx->lrc_ring_buffer_size); > if (IS_ERR(ringbuf)) { > ret = PTR_ERR(ringbuf); > goto error_deref_obj; -- Joonas Lahtinen Open Source Technology Center Intel Corporation _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
