diff options
| author | Charlie Jenkins <charlie@rivosinc.com> | 2024-03-08 21:25:55 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-03-13 17:30:28 +0300 |
| commit | 5a83e7313ee115d955d4b7834d33ff4d5a46ab37 (patch) | |
| tree | 9c03304f2fb6971f87ff1ca294855e2b30a9ce79 /arch/riscv/include | |
| parent | 6613476e225e090cc9aad49be7fa504e290dd33d (diff) | |
| download | linux-5a83e7313ee115d955d4b7834d33ff4d5a46ab37.tar.xz | |
riscv: lib: Introduce has_fast_unaligned_access()
Create has_fast_unaligned_access to avoid needing to explicitly check
the fast_misaligned_access_speed_key static key.
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Evan Green <evan@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Samuel Holland <samuel.holland@sifive.com>
Link: https://lore.kernel.org/r/20240308-disable_misaligned_probe_config-v9-1-a388770ba0ce@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/asm/cpufeature.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/riscv/include/asm/cpufeature.h b/arch/riscv/include/asm/cpufeature.h index 5a626ed2c47a..466e1f591919 100644 --- a/arch/riscv/include/asm/cpufeature.h +++ b/arch/riscv/include/asm/cpufeature.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0-only */ /* - * Copyright 2022-2023 Rivos, Inc + * Copyright 2022-2024 Rivos, Inc */ #ifndef _ASM_CPUFEATURE_H @@ -53,6 +53,13 @@ static inline bool check_unaligned_access_emulated(int cpu) static inline void unaligned_emulation_finish(void) {} #endif +DECLARE_STATIC_KEY_FALSE(fast_unaligned_access_speed_key); + +static __always_inline bool has_fast_unaligned_accesses(void) +{ + return static_branch_likely(&fast_unaligned_access_speed_key); +} + unsigned long riscv_get_elf_hwcap(void); struct riscv_isa_ext_data { @@ -135,6 +142,4 @@ static __always_inline bool riscv_cpu_has_extension_unlikely(int cpu, const unsi return __riscv_isa_extension_available(hart_isa[cpu].isa, ext); } -DECLARE_STATIC_KEY_FALSE(fast_misaligned_access_speed_key); - #endif |