Release 4.7 lib/raid6/x86.h
/* ----------------------------------------------------------------------- *
*
* Copyright 2002-2004 H. Peter Anvin - All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, Inc., 53 Temple Place Ste 330,
* Boston MA 02111-1307, USA; either version 2 of the License, or
* (at your option) any later version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
/*
* raid6/x86.h
*
* Definitions common to x86 and x86-64 RAID-6 code only
*/
#ifndef LINUX_RAID_RAID6X86_H
#define LINUX_RAID_RAID6X86_H
#if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__)
#ifdef __KERNEL__ /* Real code */
#include <asm/fpu/api.h>
#else /* Dummy code for user space testing */
static inline void kernel_fpu_begin(void)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
andrew morton | andrew morton | 6 | 75.00% | 1 | 50.00% |
h. peter anvin | h. peter anvin | 2 | 25.00% | 1 | 50.00% |
| Total | 8 | 100.00% | 2 | 100.00% |
static inline void kernel_fpu_end(void)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
andrew morton | andrew morton | 6 | 75.00% | 1 | 50.00% |
h. peter anvin | h. peter anvin | 2 | 25.00% | 1 | 50.00% |
| Total | 8 | 100.00% | 2 | 100.00% |
#define __aligned(x) __attribute__((aligned(x)))
#define X86_FEATURE_MMX (0*32+23)
/* Multimedia Extensions */
#define X86_FEATURE_FXSR (0*32+24)
/* FXSAVE and FXRSTOR instructions
* (fast save and restore) */
#define X86_FEATURE_XMM (0*32+25)
/* Streaming SIMD Extensions */
#define X86_FEATURE_XMM2 (0*32+26)
/* Streaming SIMD Extensions-2 */
#define X86_FEATURE_XMM3 (4*32+ 0)
/* "pni" SSE-3 */
#define X86_FEATURE_SSSE3 (4*32+ 9)
/* Supplemental SSE-3 */
#define X86_FEATURE_AVX (4*32+28)
/* Advanced Vector Extensions */
#define X86_FEATURE_AVX2 (9*32+ 5)
/* AVX2 instructions */
#define X86_FEATURE_MMXEXT (1*32+22)
/* AMD MMX extensions */
/* Should work well enough on modern CPUs for testing */
static inline int boot_cpu_has(int flag)
{
u32 eax, ebx, ecx, edx;
eax = (flag & 0x100) ? 7 :
(flag & 0x20) ? 0x80000001 : 1;
ecx = 0;
asm volatile("cpuid"
: "+a" (eax), "=b" (ebx), "=d" (edx), "+c" (ecx));
return ((flag & 0x100 ? ebx :
(flag & 0x80) ? ecx : edx) >> (flag & 31)) & 1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jim kukunas | jim kukunas | 41 | 54.67% | 2 | 40.00% |
h. peter anvin | h. peter anvin | 19 | 25.33% | 1 | 20.00% |
andrew morton | andrew morton | 15 | 20.00% | 2 | 40.00% |
| Total | 75 | 100.00% | 5 | 100.00% |
#endif /* ndef __KERNEL__ */
#endif
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jim kukunas | jim kukunas | 68 | 36.17% | 2 | 22.22% |
andrew morton | andrew morton | 58 | 30.85% | 2 | 22.22% |
h. peter anvin | h. peter anvin | 51 | 27.13% | 1 | 11.11% |
al viro | al viro | 8 | 4.26% | 1 | 11.11% |
atsushi sakai | atsushi sakai | 1 | 0.53% | 1 | 11.11% |
neil brown | neil brown | 1 | 0.53% | 1 | 11.11% |
ingo molnar | ingo molnar | 1 | 0.53% | 1 | 11.11% |
| Total | 188 | 100.00% | 9 | 100.00% |
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