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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/cache.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/linux/cache.h')
-rw-r--r--include/linux/cache.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/include/linux/cache.h b/include/linux/cache.h
new file mode 100644
index 000000000000..4d767b93738a
--- /dev/null
+++ b/include/linux/cache.h
@@ -0,0 +1,51 @@
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 */