src/common/smp.h

   1 /*
   2  * SPDX-License-Identifier: LGPL-2.1-only
   3  *
   4  * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   5  */
   6
   7 #ifndef _UST_COMMON_SMP_H
   8 #define _UST_COMMON_SMP_H
   9
  10 /*
  11  * Returns the total number of CPUs in the system. If the cache is not yet
  12  * initialized, get the value from the system through sysconf and cache it.
  13  *
  14  * If the sysconf call fails, don't populate the cache and return 0.
  15  */
  16 int num_possible_cpus(void)
  17         __attribute__((visibility("hidden")));
  18
  19 #define for_each_possible_cpu(cpu)              \
  20         for ((cpu) = 0; (cpu) < num_possible_cpus(); (cpu)++)
  21
  22 #endif /* _UST_COMMON_SMP_H */