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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>
This commit is contained in:
Ben Skeggs 2010-09-23 14:45:52 +10:00
parent 34e9d85a1a
commit 5f7d42ece3
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/nouveau/nouveau_debugfs.c
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@ -157,7 +157,23 @@ nouveau_debugfs_vbios_image(struct seq_file *m, void *data)
return 0; 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[] = { static struct drm_info_list nouveau_debugfs_list[] = {
{ "evict_vram", nouveau_debugfs_evict_vram, 0, NULL },
{ "chipset", nouveau_debugfs_chipset_info, 0, NULL }, { "chipset", nouveau_debugfs_chipset_info, 0, NULL },
{ "memory", nouveau_debugfs_memory_info, 0, NULL }, { "memory", nouveau_debugfs_memory_info, 0, NULL },
{ "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL }, { "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL },