diff options
| author | Samuel Holland <samuel.holland@sifive.com> | 2023-11-21 15:47:26 -0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-01-04 15:03:07 -0800 |
| commit | 62ff262227a45bf917fe198885ab7aa19be5a01f (patch) | |
| tree | a438b41277a2f4a9948808e0bd50111d28283e70 /arch/riscv/kernel/cpu_ops.c | |
| parent | 79093f3ec39c90edf4bd1a532d922ee6163441ec (diff) | |
riscv: Use the same CPU operations for all CPUs
RISC-V provides no binding (ACPI or DT) to describe per-cpu start/stop
operations, so cpu_set_ops() will always detect the same operations for
every CPU. Replace the cpu_ops array with a single pointer to save space
and reduce boot time.
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20231121234736.3489608-4-samuel.holland@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/kernel/cpu_ops.c')
| -rw-r--r-- | arch/riscv/kernel/cpu_ops.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/arch/riscv/kernel/cpu_ops.c b/arch/riscv/kernel/cpu_ops.c index 5540e2880abb..6a8bd8f4db07 100644 --- a/arch/riscv/kernel/cpu_ops.c +++ b/arch/riscv/kernel/cpu_ops.c @@ -13,7 +13,7 @@ #include <asm/sbi.h> #include <asm/smp.h> -const struct cpu_operations *cpu_ops[NR_CPUS] __ro_after_init; +const struct cpu_operations *cpu_ops __ro_after_init = &cpu_ops_spinwait; extern const struct cpu_operations cpu_ops_sbi; #ifndef CONFIG_RISCV_BOOT_SPINWAIT @@ -22,14 +22,12 @@ const struct cpu_operations cpu_ops_spinwait = { }; #endif -void __init cpu_set_ops(int cpuid) +void __init cpu_set_ops(void) { #if IS_ENABLED(CONFIG_RISCV_SBI) if (sbi_probe_extension(SBI_EXT_HSM)) { - if (!cpuid) - pr_info("SBI HSM extension detected\n"); - cpu_ops[cpuid] = &cpu_ops_sbi; - } else + pr_info("SBI HSM extension detected\n"); + cpu_ops = &cpu_ops_sbi; + } #endif - cpu_ops[cpuid] = &cpu_ops_spinwait; } |