drm/i915: Downgrade misleading "Memory usable" message

It never meant what it said, as it was always the total size of the
Global GTT and not a limit upon memory usage. Originally it served as a
quick guide to the largest batch that could be submitted by userspace,
an approximation to its maximum RSS, but was phrased badly. Today with
the 48b ppgtt, it is even more meaningless. Replace with a more specific
debug message; those wanting to know how much "video ram" they have
should consult the userspace libraries for the relevant approximation.

v2: Rebase

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171212113532.22574-1-chris@chris-wilson.co.uk
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index a7fe05666f72cf8695c2edfdd94b0f7dd6f04333..a0579b0c8581e52901d53d9caff59e6ad79007f9 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -3483,10 +3483,9 @@ int i915_ggtt_probe_hw(struct drm_i915_private *dev_priv)
        }
 
        /* GMADR is the PCI mmio aperture into the global GTT. */
-       DRM_INFO("Memory usable by graphics device = %lluM\n",
-                ggtt->base.total >> 20);
+       DRM_DEBUG_DRIVER("GGTT size = %lluM\n", ggtt->base.total >> 20);
        DRM_DEBUG_DRIVER("GMADR size = %lluM\n", (u64)ggtt->mappable_end >> 20);
-       DRM_DEBUG_DRIVER("GTT stolen size = %lluM\n",
+       DRM_DEBUG_DRIVER("DSM size = %lluM\n",
                         (u64)resource_size(&intel_graphics_stolen_res) >> 20);
        if (intel_vtd_active())
                DRM_INFO("VT-d active for gfx access\n");