From 7a49918c35b389166943f48d88a8ff9b2a78e9e4 Mon Sep 17 00:00:00 2001 From: "Jason A. Donenfeld" Date: Fri, 28 Sep 2018 16:06:49 +0200 Subject: simd: refactor simd availability handling --- src/compat/simd/include/linux/simd.h | 22 ++++++---------------- 1 file changed, 6 insertions(+), 16 deletions(-) (limited to 'src/compat/simd/include/linux/simd.h') diff --git a/src/compat/simd/include/linux/simd.h b/src/compat/simd/include/linux/simd.h index 8fd077b..f45aa1f 100644 --- a/src/compat/simd/include/linux/simd.h +++ b/src/compat/simd/include/linux/simd.h @@ -11,7 +11,7 @@ #include #include #include -#elif IS_ENABLED(CONFIG_KERNEL_MODE_NEON) +#elif defined(CONFIG_KERNEL_MODE_NEON) #include #include #endif @@ -24,25 +24,15 @@ typedef enum { static inline void simd_get(simd_context_t *ctx) { - bool have_simd = false; -#if defined(CONFIG_X86_64) && !defined(CONFIG_UML) && !defined(CONFIG_PREEMPT_RT_BASE) - have_simd = irq_fpu_usable(); -#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 -#endif - *ctx = have_simd ? HAVE_FULL_SIMD : HAVE_NO_SIMD; + *ctx = !IS_ENABLED(CONFIG_PREEMPT_RT_BASE) && may_use_simd() ? HAVE_FULL_SIMD : HAVE_NO_SIMD; } static inline void simd_put(simd_context_t *ctx) { -#if defined(CONFIG_X86_64) && !defined(CONFIG_UML) && !defined(CONFIG_PREEMPT_RT_BASE) +#if defined(CONFIG_X86_64) if (*ctx & HAVE_SIMD_IN_USE) kernel_fpu_end(); -#elif IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && !defined(CONFIG_PREEMPT_RT_BASE) +#elif defined(CONFIG_KERNEL_MODE_NEON) if (*ctx & HAVE_SIMD_IN_USE) kernel_neon_end(); #endif @@ -67,9 +57,9 @@ static __must_check inline bool simd_use(simd_context_t *ctx) return false; if (*ctx & HAVE_SIMD_IN_USE) return true; -#if defined(CONFIG_X86_64) && !defined(CONFIG_UML) && !defined(CONFIG_PREEMPT_RT_BASE) +#if defined(CONFIG_X86_64) kernel_fpu_begin(); -#elif IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && !defined(CONFIG_PREEMPT_RT_BASE) +#elif defined(CONFIG_KERNEL_MODE_NEON) kernel_neon_begin(); #endif *ctx |= HAVE_SIMD_IN_USE; -- cgit v1.2.3-59-g8ed1b