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| author | Charlie Jenkins <charlie@rivosinc.com> | 2024-03-08 19:25:55 +0100 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-03-13 15:30:28 +0100 |
| commit | 5a83e7313ee115d955d4b7834d33ff4d5a46ab37 (patch) | |
| tree | 9c03304f2fb6971f87ff1ca294855e2b30a9ce79 /arch/riscv/lib | |
| parent | Linux 6.8-rc1 (diff) | |
| download | linux-5a83e7313ee115d955d4b7834d33ff4d5a46ab37.tar.xz linux-5a83e7313ee115d955d4b7834d33ff4d5a46ab37.zip | |
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/lib')
| -rw-r--r-- | arch/riscv/lib/csum.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/riscv/lib/csum.c b/arch/riscv/lib/csum.c index af3df5274ccb..7178e0acfa22 100644 --- a/arch/riscv/lib/csum.c +++ b/arch/riscv/lib/csum.c @@ -3,7 +3,7 @@ * Checksum library * * Influenced by arch/arm64/lib/csum.c - * Copyright (C) 2023 Rivos Inc. + * Copyright (C) 2023-2024 Rivos Inc. */ #include <linux/bitops.h> #include <linux/compiler.h> @@ -318,10 +318,7 @@ unsigned int do_csum(const unsigned char *buff, int len) * branches. The largest chunk of overlap was delegated into the * do_csum_common function. */ - if (static_branch_likely(&fast_misaligned_access_speed_key)) - return do_csum_no_alignment(buff, len); - - if (((unsigned long)buff & OFFSET_MASK) == 0) + if (has_fast_unaligned_accesses() || (((unsigned long)buff & OFFSET_MASK) == 0)) return do_csum_no_alignment(buff, len); return do_csum_with_alignment(buff, len); |