diff options
Diffstat (limited to 'include/linux/kernel.h')
| -rw-r--r-- | include/linux/kernel.h | 14 |
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__) |