[PATCH] drm/v3d: Show the memory-management stats on debugfs

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Dump the contents of the DRM MM allocator of the V3D driver. This will
help us to debug the VA ranges allocated.

Signed-off-by: Maíra Canal <mcanal@xxxxxxxxxx>
---
 drivers/gpu/drm/v3d/v3d_debugfs.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/v3d/v3d_debugfs.c b/drivers/gpu/drm/v3d/v3d_debugfs.c
index f843a50d5dce..cdfe1d3bf5ee 100644
--- a/drivers/gpu/drm/v3d/v3d_debugfs.c
+++ b/drivers/gpu/drm/v3d/v3d_debugfs.c
@@ -260,11 +260,26 @@ static int v3d_measure_clock(struct seq_file *m, void *unused)
 	return 0;
 }

+static int v3d_debugfs_mm(struct seq_file *m, void *unused)
+{
+	struct drm_printer p = drm_seq_file_printer(m);
+	struct drm_debugfs_entry *entry = m->private;
+	struct drm_device *dev = entry->dev;
+	struct v3d_dev *v3d = to_v3d_dev(dev);
+
+	spin_lock(&v3d->mm_lock);
+	drm_mm_print(&v3d->mm, &p);
+	spin_unlock(&v3d->mm_lock);
+
+	return 0;
+}
+
 static const struct drm_debugfs_info v3d_debugfs_list[] = {
 	{"v3d_ident", v3d_v3d_debugfs_ident, 0},
 	{"v3d_regs", v3d_v3d_debugfs_regs, 0},
 	{"measure_clock", v3d_measure_clock, 0},
 	{"bo_stats", v3d_debugfs_bo_stats, 0},
+	{"v3d_mm", v3d_debugfs_mm, 0},
 };

 void
--
2.43.0




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