diff options
| author | Atish Patra <atishp@rivosinc.com> | 2022-03-14 13:38:45 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-03-17 12:18:12 -0700 |
| commit | a9b202606c69312cdaa4db187837820ebf7213b2 (patch) | |
| tree | fbdf37215b1eb9cc4efae77eaabecb6ae3aa8fa3 /arch/riscv/include/asm/hwcap.h | |
| parent | 3f96db125d68127ffef6fdeeb777d94ccf95c09f (diff) | |
| download | linux-a9b202606c69312cdaa4db187837820ebf7213b2.tar.bz2 | |
RISC-V: Improve /proc/cpuinfo output for ISA extensions
Currently, the /proc/cpuinfo outputs the entire riscv,isa string which
is not ideal when we have multiple ISA extensions present in the ISA
string. Some of them may not be enabled in kernel as well.
Same goes for the single letter extensions as well which prints the
entire ISA string. Some of they may not be valid ISA extensions as
well (e.g 'su')
Parse only the valid & enabled ISA extension and print them.
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include/asm/hwcap.h')
| -rw-r--r-- | arch/riscv/include/asm/hwcap.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h index 170bd80da520..691fc9c8099b 100644 --- a/arch/riscv/include/asm/hwcap.h +++ b/arch/riscv/include/asm/hwcap.h @@ -54,6 +54,13 @@ enum riscv_isa_ext_id { RISCV_ISA_EXT_ID_MAX = RISCV_ISA_EXT_MAX, }; +struct riscv_isa_ext_data { + /* Name of the extension displayed to userspace via /proc/cpuinfo */ + char uprop[RISCV_ISA_EXT_NAME_LEN_MAX]; + /* The logical ISA extension ID */ + unsigned int isa_ext_id; +}; + unsigned long riscv_isa_extension_base(const unsigned long *isa_bitmap); #define riscv_isa_extension_mask(ext) BIT_MASK(RISCV_ISA_EXT_##ext) |