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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2016-12-22 08:36:06 +0000 |
|---|---|---|
| committer |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-12-27 12:29:41 +0100 |
| commit | b3ee963fe41d0034cf8b6aff1f0cc9c91bf8d478 (patch) | |
| tree | a83aa9ad241ffe2af888f57535a56b70850b5999 /include/drm/drm_mm.h | |
| parent | drm: Use drm_mm_nodes() as shorthand for the list of nodes under struct drm_mm (diff) | |
| download | wireguard-linux-b3ee963fe41d0034cf8b6aff1f0cc9c91bf8d478.tar.xz wireguard-linux-b3ee963fe41d0034cf8b6aff1f0cc9c91bf8d478.zip | |
drm: Compile time enabling for asserts in drm_mm
Use CONFIG_DRM_DEBUG_MM to conditionally enable the internal and
validation checking using BUG_ON. Ideally these paths should all be
exercised by CI selftests (with the asserts enabled).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161222083641.2691-4-chris@chris-wilson.co.uk
Link: http://patchwork.freedesktop.org/patch/msgid/20161222083641.2691-4-chris@chris-wilson.co.uk
Diffstat (limited to 'include/drm/drm_mm.h')
| -rw-r--r-- | include/drm/drm_mm.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h index f6a68ed5ecaf..525543019896 100644 --- a/include/drm/drm_mm.h +++ b/include/drm/drm_mm.h @@ -48,6 +48,12 @@ #include <linux/stackdepot.h> #endif +#ifdef CONFIG_DRM_DEBUG_MM +#define DRM_MM_BUG_ON(expr) BUG_ON(expr) +#else +#define DRM_MM_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr) +#endif + enum drm_mm_search_flags { DRM_MM_SEARCH_DEFAULT = 0, DRM_MM_SEARCH_BEST = 1 << 0, @@ -155,7 +161,7 @@ static inline u64 __drm_mm_hole_node_start(const struct drm_mm_node *hole_node) */ static inline u64 drm_mm_hole_node_start(const struct drm_mm_node *hole_node) { - BUG_ON(!hole_node->hole_follows); + DRM_MM_BUG_ON(!hole_node->hole_follows); return __drm_mm_hole_node_start(hole_node); } |