Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
41 lines
934 B
C
41 lines
934 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_CPUMASK_H
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#define _ASM_X86_CPUMASK_H
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#ifndef __ASSEMBLER__
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#include <linux/compiler.h>
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#include <linux/cpumask.h>
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extern void setup_cpu_local_masks(void);
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/*
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* NMI and MCE exceptions need cpu_is_offline() _really_ early,
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* provide an arch_ special for them to avoid instrumentation.
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*/
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#if NR_CPUS > 1
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static __always_inline bool arch_cpu_online(int cpu)
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{
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return arch_test_bit(cpu, cpumask_bits(cpu_online_mask));
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}
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static __always_inline void arch_cpumask_clear_cpu(int cpu, struct cpumask *dstp)
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{
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arch_clear_bit(cpumask_check(cpu), cpumask_bits(dstp));
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}
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#else
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static __always_inline bool arch_cpu_online(int cpu)
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{
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return cpu == 0;
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}
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static __always_inline void arch_cpumask_clear_cpu(int cpu, struct cpumask *dstp)
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{
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return;
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}
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#endif
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#define arch_cpu_is_offline(cpu) unlikely(!arch_cpu_online(cpu))
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#endif /* __ASSEMBLER__ */
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#endif /* _ASM_X86_CPUMASK_H */
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