swh:1:snp:c3bf2749e3476071fa748f67b0ffa2fdc5fe49d9
- v6.0-rc5
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- v6.0-rc3
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- v5.8
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- v5.7
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- v5.2
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- v5.15
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- v5.14-rc5
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- v5.13-rc7
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- v5.13
- v5.12-rc8
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- v5.12-rc6
- v5.12-rc5
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- v5.12
- v5.11-rc7
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- v5.11-rc5
- v5.11-rc4
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- v5.11-rc1
- v5.11
- v5.10-rc7
- v5.10-rc6
- v5.10-rc5
- v5.10-rc4
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- v5.10-rc2
- v5.10-rc1
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- v5.1-rc7
- v5.1-rc6
- v5.1-rc5
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- v4.8-rc8
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- v4.8-rc5
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- v4.8
- v4.7-rc7
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- v4.7-rc5
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- v4.5-rc6
- v4.5-rc5
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- v4.4
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- v4.3
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- v4.2
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- v4.19-rc5
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- v4.19
- v4.18-rc8
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- v4.18-rc6
- v4.18-rc5
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- v4.18
- v4.17-rc7
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- v4.17
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- v4.16
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- v4.15
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- v4.14-rc5
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- v4.14-rc1
- v4.14
- v4.13-rc7
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- v4.13-rc5
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- v4.13-rc2
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- v4.13
- v4.12-rc7
- v4.12-rc6
- v4.12-rc5
- v4.12-rc4
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- v4.12
- v4.11-rc8
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- v4.11-rc6
- v4.11-rc5
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- v4.11-rc1
- v4.11
- v4.10-rc8
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- v4.10-rc6
- v4.10-rc5
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- v4.10
- v4.1-rc8
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- v4.1-rc6
- v4.1-rc5
- v4.1-rc4
- v4.1-rc3
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- v4.1-rc1
- v4.1
- v4.0-rc7
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- v4.0-rc5
- v4.0-rc4
- v4.0-rc3
- v4.0-rc2
- v4.0-rc1
- v4.0
- v3.9-rc8
- v3.9-rc7
- v3.9-rc6
- v3.9-rc5
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- v3.9-rc2
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- v3.9
- v3.8-rc7
- v3.8-rc6
- v3.8-rc5
- v3.8-rc4
- v3.8-rc3
- v3.8-rc2
- v3.8-rc1
- v3.8
- v3.7-rc8
- v3.7-rc7
- v3.7-rc6
- v3.7-rc5
- v3.7-rc4
- v3.7-rc3
- v3.7-rc2
- v3.7-rc1
- v3.7
- v3.6-rc7
- v3.6-rc6
- v3.6-rc5
- v3.6-rc4
- v3.6-rc3
- v3.6-rc2
- v3.6-rc1
- v3.6
- v3.5-rc7
- v3.5-rc6
- v3.5-rc5
- v3.5-rc4
- v3.5-rc3
- v3.5-rc2
- v3.5-rc1
- v3.5
- v3.4-rc7
- v3.4-rc6
- v3.4-rc5
- v3.4-rc4
- v3.4-rc3
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- v3.4-rc1
- v3.4
- v3.3-rc7
- v3.3-rc6
- v3.3-rc5
- v3.3-rc4
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- v3.3-rc1
- v3.3
- v3.2-rc7
- v3.2-rc6
- v3.2-rc5
- v3.2-rc4
- v3.2-rc3
- v3.2-rc2
- v3.2-rc1
- v3.2
- v3.19-rc7
- v3.19-rc6
- v3.19-rc5
- v3.19-rc4
- v3.19-rc3
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- v3.19-rc1
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- v3.18-rc6
- v3.18-rc5
- v3.18-rc4
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- v3.18-rc2
- v3.18-rc1
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- v3.17-rc6
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- v3.17-rc2
- v3.17-rc1
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- v3.16-rc6
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- v3.16-rc4
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- v3.16-rc2
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- v3.15-rc7
- v3.15-rc6
- v3.15-rc5
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- v3.15-rc1
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- v3.14-rc7
- v3.14-rc6
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- v3.14-rc2
- v3.14-rc1
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- v3.13-rc8
- v3.13-rc7
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- v3.13-rc5
- v3.13-rc4
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- v3.13-rc1
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- v3.12-rc6
- v3.12-rc5
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- v3.12-rc2
- v3.12-rc1
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- v3.11-rc7
- v3.11-rc6
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- v3.10-rc7
- v3.10-rc6
- v3.10-rc5
- v3.10-rc4
- v3.10-rc3
- v3.10-rc2
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- v3.10
- v3.1-rc9
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- v3.1-rc5
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- v3.0-rc4
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- v3.0-rc1
- v3.0
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- v2.6.39-rc1
- v2.6.39
- v2.6.38-rc8
- v2.6.38-rc7
- v2.6.38-rc6
- v2.6.38-rc5
- v2.6.38-rc4
- v2.6.38-rc3
- v2.6.38-rc2
- v2.6.38-rc1
- v2.6.38
- v2.6.37-rc8
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- v2.6.37-rc6
- v2.6.37-rc5
- v2.6.37-rc4
- v2.6.37-rc3
- v2.6.37-rc2
- v2.6.37-rc1
- v2.6.37
- v2.6.36-rc8
- v2.6.36-rc7
- v2.6.36-rc6
- v2.6.36-rc5
- v2.6.36-rc4
- v2.6.36-rc3
- v2.6.36-rc2
- v2.6.36-rc1
- v2.6.36
- v2.6.35-rc6
- v2.6.35-rc5
- v2.6.35-rc4
- v2.6.35-rc3
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- v2.6.35
- v2.6.34-rc7
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- v2.6.34
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- v2.6.33-rc1
- v2.6.33
- v2.6.32-rc8
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- v2.6.32-rc6
- v2.6.32-rc5
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- v2.6.32-rc1
- v2.6.32
- v2.6.31-rc9
- v2.6.31-rc8
- v2.6.31-rc7
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- v2.6.31-rc5
- v2.6.31-rc4
- v2.6.31-rc3
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- v2.6.31-rc1
- v2.6.31
- v2.6.30-rc8
- v2.6.30-rc7
- v2.6.30-rc6
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- v2.6.30-rc1
- v2.6.30
- v2.6.29-rc8
- v2.6.29-rc7
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- v2.6.29-rc1
- v2.6.29
- v2.6.28-rc9
- v2.6.28-rc8
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- v2.6.27-rc9
- v2.6.27-rc8
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- v2.6.27
- v2.6.26-rc9
- v2.6.26-rc8
- v2.6.26-rc7
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- v2.6.26-rc5
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- v2.6.26-rc2
- v2.6.26-rc1
- v2.6.26
- v2.6.25-rc9
- v2.6.25-rc8
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- v2.6.25
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- v2.6.24
- v2.6.23-rc9
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- v2.6.23
- v2.6.22-rc7
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- v2.6.22-rc3
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- v2.6.22-rc1
- v2.6.22
- v2.6.21-rc7
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- v2.6.21
- v2.6.20-rc7
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- v2.6.17
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- v2.6.16
- v2.6.15-rc7
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Tip revision: 62aa2b537c6f5957afd98e29f96897419ed5ebab authored by Linus Torvalds on 31 January 2012, 21:31:54 UTC
Linux 3.3-rc2
Linux 3.3-rc2
Tip revision: 62aa2b5
prefetch.h
/*
* Generic cache management functions. Everything is arch-specific,
* but this header exists to make sure the defines/functions can be
* used in a generic way.
*
* 2000-11-13 Arjan van de Ven <arjan@fenrus.demon.nl>
*
*/
#ifndef _LINUX_PREFETCH_H
#define _LINUX_PREFETCH_H
#include <linux/types.h>
#include <asm/processor.h>
#include <asm/cache.h>
/*
prefetch(x) attempts to pre-emptively get the memory pointed to
by address "x" into the CPU L1 cache.
prefetch(x) should not cause any kind of exception, prefetch(0) is
specifically ok.
prefetch() should be defined by the architecture, if not, the
#define below provides a no-op define.
There are 3 prefetch() macros:
prefetch(x) - prefetches the cacheline at "x" for read
prefetchw(x) - prefetches the cacheline at "x" for write
spin_lock_prefetch(x) - prefetches the spinlock *x for taking
there is also PREFETCH_STRIDE which is the architecure-preferred
"lookahead" size for prefetching streamed operations.
*/
#ifndef ARCH_HAS_PREFETCH
#define prefetch(x) __builtin_prefetch(x)
#endif
#ifndef ARCH_HAS_PREFETCHW
#define prefetchw(x) __builtin_prefetch(x,1)
#endif
#ifndef ARCH_HAS_SPINLOCK_PREFETCH
#define spin_lock_prefetch(x) prefetchw(x)
#endif
#ifndef PREFETCH_STRIDE
#define PREFETCH_STRIDE (4*L1_CACHE_BYTES)
#endif
static inline void prefetch_range(void *addr, size_t len)
{
#ifdef ARCH_HAS_PREFETCH
char *cp;
char *end = addr + len;
for (cp = addr; cp < end; cp += PREFETCH_STRIDE)
prefetch(cp);
#endif
}
#endif