Using __stringify(x) instead of #x adds support for macros as
a parameter and reduces runtime overhead.

Slightly increases the .text size but should not matter.

v2:
- Define I915_STATE_WARN_ON though I915_STATE_WARN
  (Bikeshed inspiration by Chris)

Cc: Rob Clark <robdcl...@gmail.com>
Cc: Chris Wilson <ch...@chris-wilson.co.uk>
Acked-by: Daniel Vetter <daniel.vet...@ffwll.ch>
Signed-off-by: Joonas Lahtinen <joonas.lahti...@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 5a5a3e0..1ccd137 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -69,11 +69,11 @@
                BUILD_BUG_ON(__i915_warn_cond); \
        WARN(__i915_warn_cond, "WARN_ON(" #x ")"); })
 #else
-#define WARN_ON(x) WARN((x), "WARN_ON(%s)", #x )
+#define WARN_ON(x) WARN((x), "WARN_ON(" __stringify(x) ")")
 #endif
 
 #undef WARN_ON_ONCE
-#define WARN_ON_ONCE(x) WARN_ONCE((x), "WARN_ON_ONCE(%s)", #x )
+#define WARN_ON_ONCE(x) WARN_ONCE((x), "WARN_ON_ONCE(" __stringify(x) ")")
 
 #define MISSING_CASE(x) WARN(1, "Missing switch case (%lu) in %s\n", \
                             (long) (x), __func__);
@@ -93,14 +93,8 @@
        unlikely(__ret_warn_on);                                        \
 })
 
-#define I915_STATE_WARN_ON(condition) ({                               \
-       int __ret_warn_on = !!(condition);                              \
-       if (unlikely(__ret_warn_on))                                    \
-               if (!WARN(i915.verbose_state_checks,                    \
-                         "WARN_ON(" #condition ")\n"))                 \
-                       DRM_ERROR("WARN_ON(" #condition ")\n");         \
-       unlikely(__ret_warn_on);                                        \
-})
+#define I915_STATE_WARN_ON(x)                                          \
+       I915_STATE_WARN((x), "WARN_ON(" __stringify(x) ")")
 
 static inline const char *yesno(bool v)
 {
-- 
2.4.3

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