From mboxrd@z Thu Jan 1 00:00:00 1970 From: John.C.Harrison@Intel.com Subject: [RFC 17/44] drm/i915: Prelude to splitting i915_gem_do_execbuffer in two Date: Thu, 26 Jun 2014 18:24:08 +0100 Message-ID: <1403803475-16337-18-git-send-email-John.C.Harrison@Intel.com> References: <1403803475-16337-1-git-send-email-John.C.Harrison@Intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id 587886E1DB for ; Thu, 26 Jun 2014 10:25:30 -0700 (PDT) In-Reply-To: <1403803475-16337-1-git-send-email-John.C.Harrison@Intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Intel-GFX@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org From: John Harrison The scheduler decouples the submission of batch buffers to the driver with their submission to the hardware. This basically means splitting the execbuffer() function in half. This change rearranges some code ready for the split to occur. --- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 23 ++++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index ec274ef..fda9187 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -32,6 +32,7 @@ #include "i915_trace.h" #include "intel_drv.h" #include +#include "i915_scheduler.h" #define __EXEC_OBJECT_HAS_PIN (1<<31) #define __EXEC_OBJECT_HAS_FENCE (1<<30) @@ -874,10 +875,7 @@ i915_gem_execbuffer_move_to_gpu(struct intel_engine_cs *ring, if (flush_domains & I915_GEM_DOMAIN_GTT) wmb(); - /* Unconditionally invalidate gpu caches and ensure that we do flush - * any residual writes from the previous batch. - */ - return intel_ring_invalidate_all_caches(ring); + return 0; } static bool @@ -1219,8 +1217,6 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data, } } - intel_runtime_pm_get(dev_priv); - ret = i915_mutex_lock_interruptible(dev); if (ret) goto pre_mutex_err; @@ -1331,6 +1327,20 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data, if (ret) goto err; + i915_gem_execbuffer_move_to_active(&eb->vmas, ring); + + /* To be split into two functions here... */ + + intel_runtime_pm_get(dev_priv); + + /* Unconditionally invalidate gpu caches and ensure that we do flush + * any residual writes from the previous batch. + */ + ret = intel_ring_invalidate_all_caches(ring); + if (ret) + goto err; + + /* Switch to the correct context for the batch */ ret = i915_switch_context(ring, ctx); if (ret) goto err; @@ -1381,7 +1391,6 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data, trace_i915_gem_ring_dispatch(ring, intel_ring_get_seqno(ring), flags); - i915_gem_execbuffer_move_to_active(&eb->vmas, ring); i915_gem_execbuffer_retire_commands(dev, file, ring, batch_obj); err: -- 1.7.9.5