diff options
Diffstat (limited to 'arch/loongarch/kernel')
| -rw-r--r-- | arch/loongarch/kernel/paravirt.c | 11 | ||||
| -rw-r--r-- | arch/loongarch/kernel/setup.c | 2 | ||||
| -rw-r--r-- | arch/loongarch/kernel/smp.c | 4 |
3 files changed, 16 insertions, 1 deletions
diff --git a/arch/loongarch/kernel/paravirt.c b/arch/loongarch/kernel/paravirt.c index 9c9b75b76f62..32537e9b1708 100644 --- a/arch/loongarch/kernel/paravirt.c +++ b/arch/loongarch/kernel/paravirt.c @@ -13,6 +13,7 @@ static int has_steal_clock; struct static_key paravirt_steal_enabled; struct static_key paravirt_steal_rq_enabled; static DEFINE_PER_CPU(struct kvm_steal_time, steal_time) __aligned(64); +DEFINE_STATIC_KEY_FALSE(virt_spin_lock_key); static u64 native_steal_clock(int cpu) { @@ -300,3 +301,13 @@ int __init pv_time_init(void) return 0; } + +int __init pv_spinlock_init(void) +{ + if (!cpu_has_hypervisor) + return 0; + + static_branch_enable(&virt_spin_lock_key); + + return 0; +} diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c index 0f0740f0be27..00e307203ddb 100644 --- a/arch/loongarch/kernel/setup.c +++ b/arch/loongarch/kernel/setup.c @@ -603,6 +603,8 @@ void __init setup_arch(char **cmdline_p) arch_mem_init(cmdline_p); resource_init(); + jump_label_init(); /* Initialise the static keys for paravirtualization */ + #ifdef CONFIG_SMP plat_smp_setup(); prefill_possible_map(); diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c index ca405ab86aae..482b3c7e3042 100644 --- a/arch/loongarch/kernel/smp.c +++ b/arch/loongarch/kernel/smp.c @@ -476,7 +476,7 @@ core_initcall(ipi_pm_init); #endif /* Preload SMP state for boot cpu */ -void smp_prepare_boot_cpu(void) +void __init smp_prepare_boot_cpu(void) { unsigned int cpu, node, rr_node; @@ -509,6 +509,8 @@ void smp_prepare_boot_cpu(void) rr_node = next_node_in(rr_node, node_online_map); } } + + pv_spinlock_init(); } /* called from main before smp_init() */ |