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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_CPUMASK_H
3#define _ASM_X86_CPUMASK_H
4#ifndef __ASSEMBLY__
5#include <linux/cpumask.h>
6
7extern cpumask_var_t cpu_callin_mask;
8extern cpumask_var_t cpu_callout_mask;
9extern cpumask_var_t cpu_initialized_mask;
10extern cpumask_var_t cpu_sibling_setup_mask;
11
12extern void setup_cpu_local_masks(void);
13
14/*
15 * NMI and MCE exceptions need cpu_is_offline() _really_ early,
16 * provide an arch_ special for them to avoid instrumentation.
17 */
18#if NR_CPUS > 1
19static __always_inline bool arch_cpu_online(int cpu)
20{
21 return arch_test_bit(cpu, cpumask_bits(cpu_online_mask));
22}
23#else
24static __always_inline bool arch_cpu_online(int cpu)
25{
26 return cpu == 0;
27}
28#endif
29
30#define arch_cpu_is_offline(cpu) unlikely(!arch_cpu_online(cpu))
31
32#endif /* __ASSEMBLY__ */
33#endif /* _ASM_X86_CPUMASK_H */