13ee9c3c4SRandall Stewart /*- 2603bbd06SWarner Losh * Copyright (c) 2016-2018 Netflix Inc. 33ee9c3c4SRandall Stewart * 43ee9c3c4SRandall Stewart * Redistribution and use in source and binary forms, with or without 53ee9c3c4SRandall Stewart * modification, are permitted provided that the following conditions 63ee9c3c4SRandall Stewart * are met: 73ee9c3c4SRandall Stewart * 1. Redistributions of source code must retain the above copyright 83ee9c3c4SRandall Stewart * notice, this list of conditions and the following disclaimer. 93ee9c3c4SRandall Stewart * 2. Redistributions in binary form must reproduce the above copyright 103ee9c3c4SRandall Stewart * notice, this list of conditions and the following disclaimer in the 113ee9c3c4SRandall Stewart * documentation and/or other materials provided with the distribution. 123ee9c3c4SRandall Stewart * 133ee9c3c4SRandall Stewart * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 143ee9c3c4SRandall Stewart * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 153ee9c3c4SRandall Stewart * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 163ee9c3c4SRandall Stewart * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 173ee9c3c4SRandall Stewart * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 183ee9c3c4SRandall Stewart * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 193ee9c3c4SRandall Stewart * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 203ee9c3c4SRandall Stewart * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 213ee9c3c4SRandall Stewart * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 223ee9c3c4SRandall Stewart * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 233ee9c3c4SRandall Stewart * SUCH DAMAGE. 243ee9c3c4SRandall Stewart * 25603bbd06SWarner Losh * $FreeBSD$ 263ee9c3c4SRandall Stewart */ 27603bbd06SWarner Losh #ifndef __kern_prefetch_h__ 283ee9c3c4SRandall Stewart #define __kern_prefetch_h__ 293ee9c3c4SRandall Stewart #ifdef _KERNEL 303ee9c3c4SRandall Stewart 313ee9c3c4SRandall Stewart static __inline void 323ee9c3c4SRandall Stewart kern_prefetch(const volatile void *addr, void* before) 333ee9c3c4SRandall Stewart { 343ee9c3c4SRandall Stewart #if defined(__amd64__) 353ee9c3c4SRandall Stewart __asm __volatile("prefetcht1 (%1)":"=rm"(*((int32_t *)before)):"r"(addr):); 363ee9c3c4SRandall Stewart #else 373ee9c3c4SRandall Stewart __builtin_prefetch(addr); 383ee9c3c4SRandall Stewart #endif 393ee9c3c4SRandall Stewart } 403ee9c3c4SRandall Stewart 41603bbd06SWarner Losh #endif /* _KERNEL */ 42603bbd06SWarner Losh #endif /* __kern_prefetch_h__ */ 43