[PATCH 1/3] drm/i915/gvt: cleanup debugfs scan_nonprivbb

[Zhenyu Wang]

From: Chris Wilson <chris at chris-wilson.co.uk>

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 at intel.com>
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Zhenyu Wang <zhenyuw at linux.intel.com>
---
 drivers/gpu/drm/i915/gvt/debugfs.c | 36 +-----------------------------
 1 file changed, 1 insertion(+), 35 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/debugfs.c b/drivers/gpu/drm/i915/gvt/debugfs.c
index 285f6011a537..874ee1de6b49 100644
--- 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;
 }
-- 
2.25.1