threads.h
上传用户:szlgq88
上传日期:2009-04-28
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文件大小:1k
- #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