| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_X86_CPUMASK_H |
| #define _ASM_X86_CPUMASK_H |
| #ifndef __ASSEMBLY__ |
| #include <linux/cpumask.h> |
| |
| extern void setup_cpu_local_masks(void); |
| |
| /* |
| * NMI and MCE exceptions need cpu_is_offline() _really_ early, |
| * provide an arch_ special for them to avoid instrumentation. |
| */ |
| #if NR_CPUS > 1 |
| static __always_inline bool arch_cpu_online(int cpu) |
| { |
| return arch_test_bit(cpu, cpumask_bits(cpu_online_mask)); |
| } |
| |
| static __always_inline void arch_cpumask_clear_cpu(int cpu, struct cpumask *dstp) |
| { |
| arch_clear_bit(cpumask_check(cpu), cpumask_bits(dstp)); |
| } |
| #else |
| static __always_inline bool arch_cpu_online(int cpu) |
| { |
| return cpu == 0; |
| } |
| |
| static __always_inline void arch_cpumask_clear_cpu(int cpu, struct cpumask *dstp) |
| { |
| return; |
| } |
| #endif |
| |
| #define arch_cpu_is_offline(cpu) unlikely(!arch_cpu_online(cpu)) |
| |
| #endif /* __ASSEMBLY__ */ |
| #endif /* _ASM_X86_CPUMASK_H */ |
