projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _LINUX_THREADS_H |
| 2 | #define _LINUX_THREADS_H | |
| 3 | ||
| 1da177e4 LT |
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 | /* | |
| 0771dfef IM |
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.] | |
| 1da177e4 LT |
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 |