From 5f7d42ece30104dd05307f0a004c9d45895582fb Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Thu, 23 Sep 2010 14:45:52 +1000 Subject: [PATCH] drm/nouveau: add debugfs file to forcibly evict everything from vram Very useful for debugging buffer migration issues. Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_debugfs.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) 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 }, -- 2.34.1