38 lines
903 B
C
38 lines
903 B
C
/* 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 */
|