diff options
Diffstat (limited to 'arch/riscv/kernel/smpboot.c')
| -rw-r--r-- | arch/riscv/kernel/smpboot.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c index 601a321e0f17..d85916a3660c 100644 --- a/arch/riscv/kernel/smpboot.c +++ b/arch/riscv/kernel/smpboot.c @@ -39,7 +39,9 @@ #include "head.h" +#ifndef CONFIG_HOTPLUG_PARALLEL static DECLARE_COMPLETION(cpu_running); +#endif void __init smp_prepare_cpus(unsigned int max_cpus) { @@ -179,6 +181,12 @@ static int start_secondary_cpu(int cpu, struct task_struct *tidle) return -EOPNOTSUPP; } +#ifdef CONFIG_HOTPLUG_PARALLEL +int arch_cpuhp_kick_ap_alive(unsigned int cpu, struct task_struct *tidle) +{ + return start_secondary_cpu(cpu, tidle); +} +#else int __cpu_up(unsigned int cpu, struct task_struct *tidle) { int ret = 0; @@ -199,6 +207,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle) return ret; } +#endif void __init smp_cpus_done(unsigned int max_cpus) { @@ -225,6 +234,10 @@ asmlinkage __visible void smp_callin(void) mmgrab(mm); current->active_mm = mm; +#ifdef CONFIG_HOTPLUG_PARALLEL + cpuhp_ap_sync_alive(); +#endif + store_cpu_topology(curr_cpuid); notify_cpu_starting(curr_cpuid); @@ -243,7 +256,9 @@ asmlinkage __visible void smp_callin(void) */ local_flush_icache_all(); local_flush_tlb_all(); +#ifndef CONFIG_HOTPLUG_PARALLEL complete(&cpu_running); +#endif /* * Disable preemption before enabling interrupts, so we don't try to * schedule a CPU that hasn't actually started yet. |