Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef __LINUX_CACHE_H
2#define __LINUX_CACHE_H
3
4#include <linux/kernel.h>
5#include <linux/config.h>
6#include <asm/cache.h>
7
8#ifndef L1_CACHE_ALIGN
9#define L1_CACHE_ALIGN(x) ALIGN(x, L1_CACHE_BYTES)
10#endif
11
12#ifndef SMP_CACHE_BYTES
13#define SMP_CACHE_BYTES L1_CACHE_BYTES
14#endif
15
16#ifndef ____cacheline_aligned
17#define ____cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES)))
18#endif
19
20#ifndef ____cacheline_aligned_in_smp
21#ifdef CONFIG_SMP
22#define ____cacheline_aligned_in_smp ____cacheline_aligned
23#else
24#define ____cacheline_aligned_in_smp
25#endif /* CONFIG_SMP */
26#endif
27
28#ifndef __cacheline_aligned
29#define __cacheline_aligned \
30 __attribute__((__aligned__(SMP_CACHE_BYTES), \
31 __section__(".data.cacheline_aligned")))
32#endif /* __cacheline_aligned */
33
34#ifndef __cacheline_aligned_in_smp
35#ifdef CONFIG_SMP
36#define __cacheline_aligned_in_smp __cacheline_aligned
37#else
38#define __cacheline_aligned_in_smp
39#endif /* CONFIG_SMP */
40#endif
41
42#if !defined(____cacheline_maxaligned_in_smp)
43#if defined(CONFIG_SMP)
44#define ____cacheline_maxaligned_in_smp \
45 __attribute__((__aligned__(1 << (L1_CACHE_SHIFT_MAX))))
46#else
47#define ____cacheline_maxaligned_in_smp
48#endif
49#endif
50
51#endif /* __LINUX_CACHE_H */