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authorBen Skeggs <bskeggs@redhat.com>2010-09-23 08:45:52 +0400
committerBen Skeggs <bskeggs@redhat.com>2010-09-24 10:28:33 +0400
commit5f7d42ece30104dd05307f0a004c9d45895582fb (patch)
tree1f651c70323c6a578ec1b9ee6b5580e7e1c60ad5 /drivers/gpu/drm/nouveau/nouveau_debugfs.c
parent34e9d85a1aae28b090ec4e72a0f98a5483c198c4 (diff)
downloadlinux-5f7d42ece30104dd05307f0a004c9d45895582fb.tar.xz
drm/nouveau: add debugfs file to forcibly evict everything from vram
Very useful for debugging buffer migration issues. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_debugfs.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_debugfs.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_debugfs.c b/drivers/gpu/drm/nouveau/nouveau_debugfs.c
index 7933de4aff2e..8e1592368cce 100644
--- a/drivers/gpu/drm/nouveau/nouveau_debugfs.c
+++ b/drivers/gpu/drm/nouveau/nouveau_debugfs.c
@@ -157,7 +157,23 @@ nouveau_debugfs_vbios_image(struct seq_file *m, void *data)
return 0;
}
+static int
+nouveau_debugfs_evict_vram(struct seq_file *m, void *data)
+{
+ struct drm_info_node *node = (struct drm_info_node *) m->private;
+ struct drm_nouveau_private *dev_priv = node->minor->dev->dev_private;
+ int ret;
+
+ ret = ttm_bo_evict_mm(&dev_priv->ttm.bdev, TTM_PL_VRAM);
+ if (ret)
+ seq_printf(m, "failed: %d", ret);
+ else
+ seq_printf(m, "succeeded\n");
+ return 0;
+}
+
static struct drm_info_list nouveau_debugfs_list[] = {
+ { "evict_vram", nouveau_debugfs_evict_vram, 0, NULL },
{ "chipset", nouveau_debugfs_chipset_info, 0, NULL },
{ "memory", nouveau_debugfs_memory_info, 0, NULL },
{ "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL },