diff options
author | Charlie Jenkins <charlie@rivosinc.com> | 2024-01-09 02:57:03 +0300 |
---|---|---|
committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-01-18 04:52:30 +0300 |
commit | 2ce5729fce8f62b5118f56110d16006c0e22c522 (patch) | |
tree | 3b6676419637a7d136868d4d5f488d03c94f8e9c /arch/riscv/include | |
parent | 1e7196fa5b0312a6a3e49e7c1300e145afcba96b (diff) | |
download | linux-2ce5729fce8f62b5118f56110d16006c0e22c522.tar.xz |
riscv: Add static key for misaligned accesses
Support static branches depending on the value of misaligned accesses.
This will be used by a later patch in the series. At any point in time,
this static branch will only be enabled if all online CPUs are
considered "fast".
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Evan Green <evan@rivosinc.com>
Link: https://lore.kernel.org/r/20240108-optimize_checksum-v15-2-1c50de5f2167@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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/cpufeature.h b/arch/riscv/include/asm/cpufeature.h index a418c3112cd6..7b129e5e2f07 100644 --- a/arch/riscv/include/asm/cpufeature.h +++ b/arch/riscv/include/asm/cpufeature.h @@ -133,4 +133,6 @@ 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 |