Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1#ifndef _ASM_GENERIC_PAGE_H
2#define _ASM_GENERIC_PAGE_H
3
4#ifdef __KERNEL__
5#ifndef __ASSEMBLY__
6
7#include <linux/compiler.h>
8
9/* Pure 2^n version of get_order */
10static __inline__ __attribute_const__ int get_order(unsigned long size)
11{
12 int order;
13
14 size = (size - 1) >> (PAGE_SHIFT - 1);
15 order = -1;
16 do {
17 size >>= 1;
18 order++;
19 } while (size);
20 return order;
21}
22
23#endif /* __ASSEMBLY__ */
24#endif /* __KERNEL__ */
25
26#endif /* _ASM_GENERIC_PAGE_H */