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| 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/smpboot.c | |
| parent | 79093f3ec39c90edf4bd1a532d922ee6163441ec (diff) | |
| download | linux-stable-62ff262227a45bf917fe198885ab7aa19be5a01f.tar.gz linux-stable-62ff262227a45bf917fe198885ab7aa19be5a01f.tar.bz2 linux-stable-62ff262227a45bf917fe198885ab7aa19be5a01f.zip | |
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/smpboot.c')
| -rw-r--r-- | arch/riscv/kernel/smpboot.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c index 5551945255cd..519b6bd946e5 100644 --- a/arch/riscv/kernel/smpboot.c +++ b/arch/riscv/kernel/smpboot.c @@ -166,25 +166,22 @@ void __init setup_smp(void) { int cpuid; - cpu_set_ops(0); + cpu_set_ops(); if (acpi_disabled) of_parse_and_init_cpus(); else acpi_parse_and_init_cpus(); - for (cpuid = 1; cpuid < nr_cpu_ids; cpuid++) { - if (cpuid_to_hartid_map(cpuid) != INVALID_HARTID) { - cpu_set_ops(cpuid); + for (cpuid = 1; cpuid < nr_cpu_ids; cpuid++) + if (cpuid_to_hartid_map(cpuid) != INVALID_HARTID) set_cpu_possible(cpuid, true); - } - } } static int start_secondary_cpu(int cpu, struct task_struct *tidle) { - if (cpu_ops[cpu]->cpu_start) - return cpu_ops[cpu]->cpu_start(cpu, tidle); + if (cpu_ops->cpu_start) + return cpu_ops->cpu_start(cpu, tidle); return -EOPNOTSUPP; } |