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authorMika Kuoppala <mika.kuoppala@linux.intel.com>2017-11-16 11:39:54 +0300
committerMika Kuoppala <mika.kuoppala@linux.intel.com>2017-11-16 16:35:47 +0300
commitd5653ec322ff132c2d6976ca0b909e0a9d1da6af (patch)
treeeae39a90f491c6ddd65d2394d6c8a2562eadc977 /drivers
parent34cc9efc27e2623c76a69d2ad1fa2b972e27a2c1 (diff)
downloadlinux-d5653ec322ff132c2d6976ca0b909e0a9d1da6af.tar.xz
drm/i915: Print the condition causing GEM_BUG_ON
It is easier to categorize and debug bugs if the failed condition is in plain sight in the actual dmesg output. Make it so. Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Marta Lofstedt <marta.lofstedt@intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Marta Lofstedt <marta.lofstedt@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171116083954.3357-1-mika.kuoppala@linux.intel.com
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/i915/i915_gem.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.h b/drivers/gpu/drm/i915/i915_gem.h
index ff42b5f0e981..e920dab7f1b8 100644
--- a/drivers/gpu/drm/i915/i915_gem.h
+++ b/drivers/gpu/drm/i915/i915_gem.h
@@ -28,7 +28,11 @@
#include <linux/bug.h>
#ifdef CONFIG_DRM_I915_DEBUG_GEM
-#define GEM_BUG_ON(expr) BUG_ON(expr)
+#define GEM_BUG_ON(condition) do { if (unlikely((condition))) { \
+ printk(KERN_ERR "GEM_BUG_ON(%s)\n", __stringify(condition)); \
+ BUG(); \
+ } \
+ } while(0)
#define GEM_WARN_ON(expr) WARN_ON(expr)
#define GEM_DEBUG_DECL(var) var