drm/i915: Discard some redundant cache domain flushes

Since commit a679f58d0510 ("drm/i915: Flush pages on acquisition"), we
flush objects on acquire their pages and as such when we create an
object for the purpose of writing into it, we do not need to manually
flush.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190614111053.25615-1-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
index 74b0e5871c4b38b45598672a48bce687b6cad8df..9e2878a590232c93cc0904736cf75878e789ef67 100644 (file)
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
@@ -209,12 +209,6 @@ gpu_fill_dw(struct i915_vma *vma, u64 offset, unsigned long count, u32 value)
        i915_gem_object_flush_map(obj);
        i915_gem_object_unpin_map(obj);
 
-       i915_gem_object_lock(obj);
-       err = i915_gem_object_set_to_gtt_domain(obj, false);
-       i915_gem_object_unlock(obj);
-       if (err)
-               goto err;
-
        vma = i915_vma_instance(obj, vma->vm, NULL);
        if (IS_ERR(vma)) {
                err = PTR_ERR(vma);

diff --git a/drivers/gpu/drm/i915/gt/selftest_workarounds.c b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
index c8d335d63f9cc3ce9fdeacb9b4a602f5e16e4df8..93e9579b8a4ff84e30b007e7bc42a3e1da5f0667 100644 (file)
--- a/drivers/gpu/drm/i915/gt/selftest_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
@@ -368,12 +368,6 @@ static struct i915_vma *create_batch(struct i915_gem_context *ctx)
        if (err)
                goto err_obj;
 
-       i915_gem_object_lock(obj);
-       err = i915_gem_object_set_to_wc_domain(obj, true);
-       i915_gem_object_unlock(obj);
-       if (err)
-               goto err_obj;
-
        return vma;
 
 err_obj:

diff --git a/drivers/gpu/drm/i915/intel_guc_log.c b/drivers/gpu/drm/i915/intel_guc_log.c
index 67eadc82c396d942223a70bed3f0794c874b8a5f..4f9c53681f92415d4b8a73444e80ec7f7169204f 100644 (file)
--- a/drivers/gpu/drm/i915/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/intel_guc_log.c
@@ -344,29 +344,20 @@ static void capture_logs_work(struct work_struct *work)
 static int guc_log_map(struct intel_guc_log *log)
 {
        void *vaddr;
-       int ret;
 
        lockdep_assert_held(&log->relay.lock);
 
        if (!log->vma)
                return -ENODEV;
 
-       i915_gem_object_lock(log->vma->obj);
-       ret = i915_gem_object_set_to_wc_domain(log->vma->obj, true);
-       i915_gem_object_unlock(log->vma->obj);
-       if (ret)
-               return ret;
-
        /*
         * Create a WC (Uncached for read) vmalloc mapping of log
         * buffer pages, so that we can directly get the data
         * (up-to-date) from memory.
         */
        vaddr = i915_gem_object_pin_map(log->vma->obj, I915_MAP_WC);
-       if (IS_ERR(vaddr)) {
-               DRM_ERROR("Couldn't map log buffer pages %d\n", ret);
+       if (IS_ERR(vaddr))
                return PTR_ERR(vaddr);
-       }
 
        log->relay.buf_addr = vaddr;
 

diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c
index a2ac06a08715d4889fe3070a8342c3c9856867c0..21339b7f6a3e9209813d464a8b724f059faaa4a6 100644 (file)
--- a/drivers/gpu/drm/i915/intel_overlay.c
+++ b/drivers/gpu/drm/i915/intel_overlay.c
@@ -1377,12 +1377,6 @@ void intel_overlay_setup(struct drm_i915_private *dev_priv)
        if (ret)
                goto out_free;
 
-       i915_gem_object_lock(overlay->reg_bo);
-       ret = i915_gem_object_set_to_gtt_domain(overlay->reg_bo, true);
-       i915_gem_object_unlock(overlay->reg_bo);
-       if (ret)
-               goto out_reg_bo;
-
        memset_io(overlay->regs, 0, sizeof(struct overlay_registers));
        update_polyphase_filter(overlay->regs);
        update_reg_attrs(overlay, overlay->regs);
@@ -1391,8 +1385,6 @@ void intel_overlay_setup(struct drm_i915_private *dev_priv)
        DRM_INFO("Initialized overlay support.\n");
        return;
 
-out_reg_bo:
-       i915_gem_object_put(overlay->reg_bo);
 out_free:
        kfree(overlay);
 }