1 files changed, 13 insertions, 1 deletions

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index f4fc576ed4c4..5c1ec1f84eab 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -24,11 +24,15 @@ extern const char linux_banner[];
 #define LONG_MAX        ((long)(~0UL>>1))
 #define LONG_MIN        (-LONG_MAX - 1)
 #define ULONG_MAX       (~0UL)
+#define LLONG_MAX       ((long long)(~0ULL>>1))
+#define LLONG_MIN       (-LLONG_MAX - 1)
+#define ULLONG_MAX      (~0ULL)
 
 #define STACK_MAGIC     0xdeadbeef
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 #define ALIGN(x,a) (((x)+(a)-1)&~((a)-1))
+#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
 
 #define KERN_EMERG      "<0>"   /* system is unusable                   */
 #define KERN_ALERT      "<1>"   /* action must be taken immediately     */
@@ -75,7 +79,7 @@ extern int cond_resched(void);
 # define might_sleep() do { might_resched(); } while (0)
 #endif
 
-#define might_sleep_if(cond) do { if (unlikely(cond)) might_sleep(); } while (0)
+#define might_sleep_if(cond) do { if (cond) might_sleep(); } while (0)
 
 #define abs(x) ({                               \
                 int __x = (x);                  \
@@ -114,6 +118,8 @@ extern int scnprintf(char * buf, size_t size, const char * fmt, ...)
         __attribute__ ((format (printf, 3, 4)));
 extern int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
         __attribute__ ((format (printf, 3, 0)));
+extern char *kasprintf(gfp_t gfp, const char *fmt, ...)
+        __attribute__ ((format (printf, 2, 3)));
 
 extern int sscanf(const char *, const char *, ...)
         __attribute__ ((format (scanf, 2, 3)));
@@ -331,6 +337,12 @@ struct sysinfo {
 /* Force a compilation error if condition is true */
 #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
 
+/* Force a compilation error if condition is true, but also produce a
+   result (of value 0 and type size_t), so the expression can be used
+   e.g. in a structure initializer (or where-ever else comma expressions
+   aren't permitted). */
+#define BUILD_BUG_ON_ZERO(e) (sizeof(char[1 - 2 * !!(e)]) - 1)
+
 /* Trap pasters of __FUNCTION__ at compile-time */
 #define __FUNCTION__ (__func__)