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 37