From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- ANDROID_3.4.5/include/linux/prefetch.h | 64 ---------------------------------- 1 file changed, 64 deletions(-) delete mode 100644 ANDROID_3.4.5/include/linux/prefetch.h (limited to 'ANDROID_3.4.5/include/linux/prefetch.h') diff --git a/ANDROID_3.4.5/include/linux/prefetch.h b/ANDROID_3.4.5/include/linux/prefetch.h deleted file mode 100644 index a3bfbdf6..00000000 --- a/ANDROID_3.4.5/include/linux/prefetch.h +++ /dev/null @@ -1,64 +0,0 @@ -/* - * 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 - * - */ - -#ifndef _LINUX_PREFETCH_H -#define _LINUX_PREFETCH_H - -#include -#include -#include - -/* - 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 -- cgit