[lttng-ust.git] / src / common / smp.h

/*
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#ifndef _UST_COMMON_SMP_H
#define _UST_COMMON_SMP_H

/*
 * Returns the total number of CPUs in the system. If the cache is not yet
 * initialized, get the value from the system through sysconf and cache it.
 *
 * If the sysconf call fails, don't populate the cache and return 0.
 */
int num_possible_cpus(void);

#define for_each_possible_cpu(cpu)		\
	for ((cpu) = 0; (cpu) < num_possible_cpus(); (cpu)++)

#endif /* _UST_COMMON_SMP_H */
Commit	Line	Data
74cc1f59 MJ	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
	18	#define for_each_possible_cpu(cpu) \
	19	for ((cpu) = 0; (cpu) < num_possible_cpus(); (cpu)++)
	20
	21	#endif /* _UST_COMMON_SMP_H */