From: Matthew Auld <matthew.auld@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH] drm/i915: allow GEM_BUG_ON expr checking with !DEBUG_GEM
Date: Fri, 2 Dec 2016 18:47:50 +0000 [thread overview]
Message-ID: <20161202184750.3843-1-matthew.auld@intel.com> (raw)
Use BUILD_BUG_ON_INVALID(expr) in GEM_BUG_ON when building without
DEBUG_GEM. This means the compiler can now check the validity of expr
without generating any code, in turn preventing us from inadvertently
breaking the build when DEBUG_GEM is not enabled.
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
---
drivers/gpu/drm/i915/i915_gem.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.h b/drivers/gpu/drm/i915/i915_gem.h
index 51ec793f2e20..8801a14a78a2 100644
--- a/drivers/gpu/drm/i915/i915_gem.h
+++ b/drivers/gpu/drm/i915/i915_gem.h
@@ -28,7 +28,7 @@
#ifdef CONFIG_DRM_I915_DEBUG_GEM
#define GEM_BUG_ON(expr) BUG_ON(expr)
#else
-#define GEM_BUG_ON(expr) do { } while (0)
+#define GEM_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr)
#endif
#define I915_NUM_ENGINES 5
--
2.9.3
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next reply other threads:[~2016-12-02 18:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-02 18:47 Matthew Auld [this message]
2016-12-02 19:15 ` ✗ Fi.CI.BAT: warning for drm/i915: allow GEM_BUG_ON expr checking with !DEBUG_GEM Patchwork
2016-12-02 19:44 ` [PATCH] " Chris Wilson
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