drm/i915: No need to wait for idle on L3 remap
authorChris Wilson <chris@chris-wilson.co.uk>
Fri, 24 Jun 2016 13:55:56 +0000 (14:55 +0100)
committerChris Wilson <chris@chris-wilson.co.uk>
Fri, 24 Jun 2016 14:03:06 +0000 (15:03 +0100)
As the L3 remapping is applied before the next execution, there is no
need to wait until all previous uses are idle, the application will not
occur any sooner.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1466776558-21516-5-git-send-email-chris@chris-wilson.co.uk
drivers/gpu/drm/i915/i915_sysfs.c

index 02507bf..a6e90fe 100644 (file)
@@ -227,13 +227,6 @@ i915_l3_write(struct file *filp, struct kobject *kobj,
                }
        }
 
-       ret = i915_gpu_idle(drm_dev);
-       if (ret) {
-               kfree(temp);
-               mutex_unlock(&drm_dev->struct_mutex);
-               return ret;
-       }
-
        /* TODO: Ideally we really want a GPU reset here to make sure errors
         * aren't propagated. Since I cannot find a stable way to reset the GPU
         * at this point it is left as a TODO.