[RFC 2/2] drm/msm: Add memory stats to fdinfo

[Rob Clark <robdclark@gmail.com>]

From: Rob Clark <robdclark@chromium.org>

Use the new helper to export stats about memory usage.

Signed-off-by: Rob Clark <robdclark@chromium.org>
---
 drivers/gpu/drm/msm/msm_drv.c | 26 +++++++++++++++++++++++++-
 drivers/gpu/drm/msm/msm_gpu.c |  2 --
 2 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 9b6f17b1261f..385776f6a531 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -1043,17 +1043,40 @@ static const struct drm_ioctl_desc msm_ioctls[] = {
 	DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_QUERY, msm_ioctl_submitqueue_query, DRM_RENDER_ALLOW),
 };
 
+enum drm_gem_object_status gem_status(struct drm_gem_object *obj)
+{
+	struct msm_gem_object *msm_obj = to_msm_bo(obj);
+	enum drm_gem_object_status status = 0;
+
+	if (!dma_resv_test_signaled(obj->resv, dma_resv_usage_rw(true)))
+		status |= DRM_GEM_OBJECT_ACTIVE;
+
+	if (msm_obj->pages)
+		status |= DRM_GEM_OBJECT_RESIDENT;
+
+	if (msm_obj->madv == MSM_MADV_DONTNEED)
+		status |= DRM_GEM_OBJECT_PURGEABLE;
+
+	return status;
+}
+
 static void msm_fop_show_fdinfo(struct seq_file *m, struct file *f)
 {
 	struct drm_file *file = f->private_data;
 	struct drm_device *dev = file->minor->dev;
 	struct msm_drm_private *priv = dev->dev_private;
+	struct msm_file_private *ctx = file->driver_priv;
 	struct drm_printer p = drm_seq_file_printer(m);
 
 	if (!priv->gpu)
 		return;
 
-	msm_gpu_show_fdinfo(priv->gpu, file->driver_priv, &p);
+	drm_printf(&p, "drm-driver:\t%s\n", dev->driver->name);
+	drm_printf(&p, "drm-client-id:\t%u\n", ctx->seqno);
+
+	msm_gpu_show_fdinfo(priv->gpu, ctx, &p);
+
+	drm_print_memory_stats(file, &p, gem_status);
 }
 
 static const struct file_operations fops = {
@@ -1067,6 +1090,7 @@ static const struct drm_driver msm_driver = {
 				DRIVER_RENDER |
 				DRIVER_ATOMIC |
 				DRIVER_MODESET |
+				DRIVER_SYNCOBJ_TIMELINE |
 				DRIVER_SYNCOBJ,
 	.open               = msm_open,
 	.postclose           = msm_postclose,
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 26ebda40be4f..c403912d13ab 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -151,8 +151,6 @@ int msm_gpu_pm_suspend(struct msm_gpu *gpu)
 void msm_gpu_show_fdinfo(struct msm_gpu *gpu, struct msm_file_private *ctx,
 			 struct drm_printer *p)
 {
-	drm_printf(p, "drm-driver:\t%s\n", gpu->dev->driver->name);
-	drm_printf(p, "drm-client-id:\t%u\n", ctx->seqno);
 	drm_printf(p, "drm-engine-gpu:\t%llu ns\n", ctx->elapsed_ns);
 	drm_printf(p, "drm-cycles-gpu:\t%llu\n", ctx->cycles);
 	drm_printf(p, "drm-maxfreq-gpu:\t%u Hz\n", gpu->fast_rate);
-- 
2.39.2