blktrace: Fix potential deadlock between delete & sysfs ops

[pandora-kernel.git] / include / linux / compiler-gcc4.h

diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
index dfadc96..59a7e4c 100644 (file)
--- a/include/linux/compiler-gcc4.h
+++ b/include/linux/compiler-gcc4.h
@@ -29,6 +29,19 @@
    the kernel context */
 #define __cold                 __attribute__((__cold__))
 
+#define __linktime_error(message) __attribute__((__error__(message)))
+
+/*
+ * GCC 'asm goto' miscompiles certain code sequences:
+ *
+ *   http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
+ *
+ * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
+ * Fixed in GCC 4.8.2 and later versions.
+ *
+ * (asm goto is automatically volatile - the naming reflects this.)
+ */
+#define asm_volatile_goto(x...)        do { asm goto(x); asm (""); } while (0)
 
 #if __GNUC_MINOR__ >= 5
 /*