diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2019-09-04 07:47:37 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-09-10 08:53:08 +0200 |
| commit | 9286766ba65be6ecc3779151191029fd9bbf5a3f (patch) | |
| tree | 74dd514367cfbc30b816cea79903d5e6cfb53c11 /drivers/gpu | |
| parent | 527f6d91f8bbd2c03720c8efdccb8024999c25da (diff) | |
| download | linux-9286766ba65be6ecc3779151191029fd9bbf5a3f.tar.bz2 | |
drm/vram: add vram-mm debugfs file
Wire up drm_mm_print() for vram helpers, using a new
debugfs file, so one can see how vram is used:
# cat /sys/kernel/debug/dri/0/vram-mm
0x0000000000000000-0x0000000000000300: 768: used
0x0000000000000300-0x0000000000000600: 768: used
0x0000000000000600-0x0000000000000900: 768: used
0x0000000000000900-0x0000000000000c00: 768: used
0x0000000000000c00-0x0000000000004000: 13312: free
total: 16384, used 3072 free 13312
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: http://patchwork.freedesktop.org/patch/msgid/20190904054740.20817-5-kraxel@redhat.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/drm_vram_mm_helper.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_vram_mm_helper.c b/drivers/gpu/drm/drm_vram_mm_helper.c index 31984690d5f3..00fd8a691fa9 100644 --- a/drivers/gpu/drm/drm_vram_mm_helper.c +++ b/drivers/gpu/drm/drm_vram_mm_helper.c @@ -1,7 +1,9 @@ // SPDX-License-Identifier: GPL-2.0-or-later +#include <drm/drm_debugfs.h> #include <drm/drm_device.h> #include <drm/drm_file.h> +#include <drm/drm_gem_ttm_helper.h> #include <drm/drm_vram_mm_helper.h> #include <drm/ttm/ttm_page_alloc.h> @@ -160,6 +162,48 @@ static struct ttm_bo_driver bo_driver = { * struct drm_vram_mm */ +#if defined(CONFIG_DEBUG_FS) +static int drm_vram_mm_debugfs(struct seq_file *m, void *data) +{ + struct drm_info_node *node = (struct drm_info_node *) m->private; + struct drm_vram_mm *vmm = node->minor->dev->vram_mm; + struct drm_mm *mm = vmm->bdev.man[TTM_PL_VRAM].priv; + struct ttm_bo_global *glob = vmm->bdev.glob; + struct drm_printer p = drm_seq_file_printer(m); + + spin_lock(&glob->lru_lock); + drm_mm_print(mm, &p); + spin_unlock(&glob->lru_lock); + return 0; +} + +static const struct drm_info_list drm_vram_mm_debugfs_list[] = { + { "vram-mm", drm_vram_mm_debugfs, 0, NULL }, +}; +#endif + +/** + * drm_vram_mm_debugfs_init() - Register VRAM MM debugfs file. + * + * @minor: drm minor device. + * + * Returns: + * 0 on success, or + * a negative error code otherwise. + */ +int drm_vram_mm_debugfs_init(struct drm_minor *minor) +{ + int ret = 0; + +#if defined(CONFIG_DEBUG_FS) + ret = drm_debugfs_create_files(drm_vram_mm_debugfs_list, + ARRAY_SIZE(drm_vram_mm_debugfs_list), + minor->debugfs_root, minor); +#endif + return ret; +} +EXPORT_SYMBOL(drm_vram_mm_debugfs_init); + /** * drm_vram_mm_init() - Initialize an instance of VRAM MM. * @vmm: the VRAM MM instance to initialize |