diff options
| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2018-09-06 20:55:59 -0600 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2018-09-06 21:07:22 -0600 |
| commit | 2b1d77adecd8a93f4cf3582abd324cf40b4280a1 (patch) | |
| tree | 1ee8ba794123cdc0329d98688b5e1b4955d959ca /src/crypto/include | |
| parent | 1c896512cb783adfb82930c9ebd0421de245858f (diff) | |
compat: move simd.h from crypto to compat since it's going upstream
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'src/crypto/include')
| -rw-r--r-- | src/crypto/include/linux/simd.h | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/src/crypto/include/linux/simd.h b/src/crypto/include/linux/simd.h deleted file mode 100644 index 6adf0c3..0000000 --- a/src/crypto/include/linux/simd.h +++ /dev/null @@ -1,65 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 - * - * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. - */ - -#ifndef _WG_SIMD_H -#define _WG_SIMD_H - -#include <linux/sched.h> -#if defined(CONFIG_X86_64) -#include <linux/version.h> -#include <asm/fpu/api.h> -#include <asm/simd.h> -#elif IS_ENABLED(CONFIG_KERNEL_MODE_NEON) -#include <asm/neon.h> -#include <asm/simd.h> -#endif - -typedef enum { - HAVE_NO_SIMD, - HAVE_FULL_SIMD -} simd_context_t; - -static inline simd_context_t simd_get(void) -{ - bool have_simd = false; -#if defined(CONFIG_X86_64) && !defined(CONFIG_UML) && !defined(CONFIG_PREEMPT_RT_BASE) - have_simd = irq_fpu_usable(); - if (have_simd) - kernel_fpu_begin(); -#elif IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && !defined(CONFIG_PREEMPT_RT_BASE) -#if defined(CONFIG_ARM64) - have_simd = true; /* ARM64 supports NEON in any context. */ -#elif defined(CONFIG_ARM) - have_simd = may_use_simd(); /* ARM doesn't support NEON in interrupt context. */ -#endif - if (have_simd) - kernel_neon_begin(); -#endif - return have_simd ? HAVE_FULL_SIMD : HAVE_NO_SIMD; -} - -static inline void simd_put(simd_context_t prior_context) -{ -#if defined(CONFIG_X86_64) && !defined(CONFIG_UML) && !defined(CONFIG_PREEMPT_RT_BASE) - if (prior_context != HAVE_NO_SIMD) - kernel_fpu_end(); -#elif IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && !defined(CONFIG_PREEMPT_RT_BASE) - if (prior_context != HAVE_NO_SIMD) - kernel_neon_end(); -#endif -} - -static inline simd_context_t simd_relax(simd_context_t prior_context) -{ -#ifdef CONFIG_PREEMPT - if (prior_context != HAVE_NO_SIMD && need_resched()) { - simd_put(prior_context); - return simd_get(); - } -#endif - return prior_context; -} - -#endif /* _WG_SIMD_H */ |