src/shared/numa-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include "cpu-set-util.h"
   5 #include "missing_syscall.h"
   6
   7 static inline bool mpol_is_valid(int t) {
   8         return t >= MPOL_DEFAULT && t <= MPOL_LOCAL;
   9 }
  10
  11 typedef struct NUMAPolicy {
  12         /* Always use numa_policy_get_type() to read the value */
  13         int type;
  14         CPUSet nodes;
  15 } NUMAPolicy;
  16
  17 bool numa_policy_is_valid(const NUMAPolicy *p);
  18
  19 static inline int numa_policy_get_type(const NUMAPolicy *p) {
  20         return p->type < 0 ? (p->nodes.set ? MPOL_PREFERRED : -1) : p->type;
  21 }
  22
  23 static inline void numa_policy_reset(NUMAPolicy *p) {
  24         assert(p);
  25         cpu_set_reset(&p->nodes);
  26         p->type = -1;
  27 }
  28
  29 int apply_numa_policy(const NUMAPolicy *policy);
  30 int numa_to_cpu_set(const NUMAPolicy *policy, CPUSet *set);
  31
  32 int numa_mask_add_all(CPUSet *mask);
  33
  34 const char* mpol_to_string(int i) _const_;
  35 int mpol_from_string(const char *s) _pure_;