cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

cpumask.h (1069B)

      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
     24static __always_inline void arch_cpumask_clear_cpu(int cpu, struct cpumask *dstp)
     25{
     26	arch_clear_bit(cpumask_check(cpu), cpumask_bits(dstp));
     27}
     28#else
     29static __always_inline bool arch_cpu_online(int cpu)
     30{
     31	return cpu == 0;
     32}
     33
     34static __always_inline void arch_cpumask_clear_cpu(int cpu, struct cpumask *dstp)
     35{
     36	return;
     37}
     38#endif
     39
     40#define arch_cpu_is_offline(cpu)	unlikely(!arch_cpu_online(cpu))
     41
     42#endif /* __ASSEMBLY__ */
     43#endif /* _ASM_X86_CPUMASK_H */