[mirror_ubuntu-artful-kernel.git] / include / linux / threads.h

#ifndef _LINUX_THREADS_H
#define _LINUX_THREADS_H

#include <linux/config.h>

/*
 * The default limit for the nr of threads is now in
 * /proc/sys/kernel/threads-max.
 */

/*
 * Maximum supported processors that can run under SMP.  This value is
 * set via configure setting.  The maximum is equal to the size of the
 * bitmasks used on that platform, i.e. 32 or 64.  Setting this smaller
 * saves quite a bit of memory.
 */
#ifdef CONFIG_SMP
#define NR_CPUS		CONFIG_NR_CPUS
#else
#define NR_CPUS		1
#endif

#define MIN_THREADS_LEFT_FOR_ROOT 4

/*
 * This controls the default maximum pid allocated to a process
 */
#define PID_MAX_DEFAULT (CONFIG_BASE_SMALL ? 0x1000 : 0x8000)

/*
 * A maximum of 4 million PIDs should be enough for a while:
 */
#define PID_MAX_LIMIT (CONFIG_BASE_SMALL ? PAGE_SIZE * 8 : \
	(sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT))

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_THREADS_H
	2	#define _LINUX_THREADS_H
	3
	4	#include <linux/config.h>
	5
	6	/*
	7	* The default limit for the nr of threads is now in
	8	* /proc/sys/kernel/threads-max.
	9	*/
	10
	11	/*
	12	* Maximum supported processors that can run under SMP. This value is
	13	* set via configure setting. The maximum is equal to the size of the
	14	* bitmasks used on that platform, i.e. 32 or 64. Setting this smaller
	15	* saves quite a bit of memory.
	16	*/
	17	#ifdef CONFIG_SMP
	18	#define NR_CPUS CONFIG_NR_CPUS
	19	#else
	20	#define NR_CPUS 1
	21	#endif
	22
	23	#define MIN_THREADS_LEFT_FOR_ROOT 4
	24
	25	/*
	26	* This controls the default maximum pid allocated to a process
	27	*/
	28	#define PID_MAX_DEFAULT (CONFIG_BASE_SMALL ? 0x1000 : 0x8000)
	29
	30	/*
	31	* A maximum of 4 million PIDs should be enough for a while:
	32	*/
	33	#define PID_MAX_LIMIT (CONFIG_BASE_SMALL ? PAGE_SIZE * 8 : \
	34	(sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT))
	35
	36	#endif