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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
This commit is contained in:
Mika Kuoppala 2017-11-16 10:39:54 +02:00
parent 34cc9efc27
commit d5653ec322
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/i915/i915_gem.h
View File

@ -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