drm/i915/gvt: cleanup debugfs scan_nonprivbb

Remove extra chatty message for debugfs scan_nonprivbb which is used
to enable scan for non privileged batch on specific engine. Just write
target i915 engine mask instead.

Cc: Ding Zhuocheng <zhuocheng.ding@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200304032307.2983-1-zhenyuw@linux.intel.com

diff --git a/drivers/gpu/drm/i915/gvt/debugfs.c b/drivers/gpu/drm/i915/gvt/debugfs.c
index 285f6011a537eebdcf0b9870fce1c034e04f4f1c..874ee1de6b499cc9a473270c64a745e89749fdf0 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/debugfs.c
+++ b/drivers/gpu/drm/i915/gvt/debugfs.c
@@ -128,6 +128,7 @@ static int
 vgpu_scan_nonprivbb_get(void *data, u64 *val)
 {
        struct intel_vgpu *vgpu = (struct intel_vgpu *)data;
+
        *val = vgpu->scan_nonprivbb;
        return 0;
 }
@@ -142,42 +143,7 @@ static int
 vgpu_scan_nonprivbb_set(void *data, u64 val)
 {
        struct intel_vgpu *vgpu = (struct intel_vgpu *)data;
-       struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
-       enum intel_engine_id id;
-       char buf[128], *s;
-       int len;
-
-       val &= (1 << I915_NUM_ENGINES) - 1;
-
-       if (vgpu->scan_nonprivbb == val)
-               return 0;
-
-       if (!val)
-               goto done;
-
-       len = sprintf(buf,
-               "gvt: vgpu %d turns on non-privileged batch buffers scanning on Engines:",
-               vgpu->id);
-
-       s = buf + len;
-
-       for (id = 0; id < I915_NUM_ENGINES; id++) {
-               struct intel_engine_cs *engine;
-
-               engine = dev_priv->engine[id];
-               if (engine && (val & (1 << id))) {
-                       len = snprintf(s, 4, "%d, ", engine->id);
-                       s += len;
-               } else
-                       val &=  ~(1 << id);
-       }
-
-       if (val)
-               sprintf(s, "low performance expected.");
-
-       pr_warn("%s\n", buf);
 
-done:
        vgpu->scan_nonprivbb = val;
        return 0;
 }