diff options
Diffstat (limited to 'include/linux/kernel.h')
| -rw-r--r-- | include/linux/kernel.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 67da15c2e1e3..9eb023020b44 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -92,6 +92,15 @@ asmlinkage int printk(const char * fmt, ...) unsigned long int_sqrt(unsigned long); +static inline int __attribute_pure__ long_log2(unsigned long x) +{ + int r = 0; + for (x >>= 1; x > 0; x >>= 1) + r++; + return r; +} + + extern int printk_ratelimit(void); extern int __printk_ratelimit(int ratelimit_jiffies, int ratelimit_burst); |