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1da177e4 LT |
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 */ |