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 that can run under SMP. This value is 12 * set via configure setting. The maximum is equal to the size of the 13 * bitmasks used on that platform, i.e. 32 or 64. Setting this smaller 14 * saves quite a bit of memory. 15 */ 16 #ifdef CONFIG_SMP 17 #define NR_CPUS CONFIG_NR_CPUS 18 #else 19 #define NR_CPUS 1 20 #endif 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
