diff options
Diffstat (limited to 'arch/arm64/lib/crc32-glue.c')
| -rw-r--r-- | arch/arm64/lib/crc32-glue.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/arch/arm64/lib/crc32-glue.c b/arch/arm64/lib/crc32-glue.c index 295ae3e6b997..15c4c9db573e 100644 --- a/arch/arm64/lib/crc32-glue.c +++ b/arch/arm64/lib/crc32-glue.c @@ -2,6 +2,7 @@ #include <linux/crc32.h> #include <linux/linkage.h> +#include <linux/module.h> #include <asm/alternative.h> #include <asm/cpufeature.h> @@ -21,7 +22,7 @@ asmlinkage u32 crc32_le_arm64_4way(u32 crc, unsigned char const *p, size_t len); asmlinkage u32 crc32c_le_arm64_4way(u32 crc, unsigned char const *p, size_t len); asmlinkage u32 crc32_be_arm64_4way(u32 crc, unsigned char const *p, size_t len); -u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len) +u32 __pure crc32_le_arch(u32 crc, const u8 *p, size_t len) { if (!alternative_has_cap_likely(ARM64_HAS_CRC32)) return crc32_le_base(crc, p, len); @@ -40,11 +41,12 @@ u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len) return crc32_le_arm64(crc, p, len); } +EXPORT_SYMBOL(crc32_le_arch); -u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len) +u32 __pure crc32c_le_arch(u32 crc, const u8 *p, size_t len) { if (!alternative_has_cap_likely(ARM64_HAS_CRC32)) - return __crc32c_le_base(crc, p, len); + return crc32c_le_base(crc, p, len); if (len >= min_len && cpu_have_named_feature(PMULL) && crypto_simd_usable()) { kernel_neon_begin(); @@ -60,8 +62,9 @@ u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len) return crc32c_le_arm64(crc, p, len); } +EXPORT_SYMBOL(crc32c_le_arch); -u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len) +u32 __pure crc32_be_arch(u32 crc, const u8 *p, size_t len) { if (!alternative_has_cap_likely(ARM64_HAS_CRC32)) return crc32_be_base(crc, p, len); @@ -80,3 +83,17 @@ u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len) return crc32_be_arm64(crc, p, len); } +EXPORT_SYMBOL(crc32_be_arch); + +u32 crc32_optimizations(void) +{ + if (alternative_has_cap_likely(ARM64_HAS_CRC32)) + return CRC32_LE_OPTIMIZATION | + CRC32_BE_OPTIMIZATION | + CRC32C_OPTIMIZATION; + return 0; +} +EXPORT_SYMBOL(crc32_optimizations); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("arm64-optimized CRC32 functions"); |