1#ifndef _LINUX_THREADS_H 2#define _LINUX_THREADS_H 3 4 5/* 6 * The default limit for the nr of threads is now in 7 * /proc/sys/kernel/threads-max. 8 */ 9 10/* 11 * Maximum supported processors. Setting this smaller saves quite a 12 * bit of memory. Use nr_cpu_ids instead of this except for static bitmaps. 13 */ 14#ifndef CONFIG_NR_CPUS 15/* FIXME: This should be fixed in the arch's Kconfig */ 16#define CONFIG_NR_CPUS 1 17#endif 18 19/* Places which use this should consider cpumask_var_t. */ 20#define NR_CPUS CONFIG_NR_CPUS 21 22#define MIN_THREADS_LEFT_FOR_ROOT 4 23 24/* 25 * This controls the default maximum pid allocated to a process 26 */ 27#define PID_MAX_DEFAULT (CONFIG_BASE_SMALL ? 0x1000 : 0x8000) 28 29/* 30 * A maximum of 4 million PIDs should be enough for a while. 31 * [NOTE: PID/TIDs are limited to 2^29 ~= 500+ million, see futex.h.] 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 37