[TCP]: Allow minimum RTO to be configurable via routing metrics.

[linux-2.6-omap-h63xx.git] / include / linux / compiler-gcc.h

diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 9008eabb9c3ded7440e75c3d2b2c6c4c9c5f7e01..03ec2311fb29c9ce4d252e2e9b41b8eea19e8e18 100644 (file)
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -22,6 +22,9 @@
     __asm__ ("" : "=r"(__ptr) : "0"(ptr));             \
     (typeof(ptr)) (__ptr + (off)); })
 
+/* &a[0] degrades to a pointer: a different type from an array */
+#define __must_be_array(a) \
+  BUILD_BUG_ON_ZERO(__builtin_types_compatible_p(typeof(a), typeof(&a[0])))
 
 #define inline         inline          __attribute__((always_inline))
 #define __inline__     __inline__      __attribute__((always_inline))
@@ -37,3 +40,4 @@
 #define  noinline                      __attribute__((noinline))
 #define __attribute_pure__             __attribute__((pure))
 #define __attribute_const__            __attribute__((__const__))
+#define __maybe_unused                 __attribute__((unused))