/* * The default limit for the nr of threads is now in * /proc/sys/kernel/threads-max.
*/
/* * Maximum supported processors. Setting this smaller saves quite a * bit of memory. Use nr_cpu_ids instead of this except for static bitmaps.
*/ #ifndef CONFIG_NR_CPUS /* FIXME: This should be fixed in the arch's Kconfig */ #define CONFIG_NR_CPUS 1 #endif
/* Places which use this should consider cpumask_var_t. */ #define NR_CPUS CONFIG_NR_CPUS
#define MIN_THREADS_LEFT_FOR_ROOT 4
/* * This controls the default maximum pid allocated to a process
*/ #define PID_MAX_DEFAULT (IS_ENABLED(CONFIG_BASE_SMALL) ? 0x1000 : 0x8000)
/* * A maximum of 4 million PIDs should be enough for a while. * [NOTE: PID/TIDs are limited to 2^30 ~= 1 billion, see FUTEX_TID_MASK.]
*/ #define PID_MAX_LIMIT (IS_ENABLED(CONFIG_BASE_SMALL) ? PAGE_SIZE * 8 : \
(sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT))
/* * Define a minimum number of pids per cpu. Heuristically based * on original pid max of 32k for 32 cpus. Also, increase the * minimum settable value for pid_max on the running system based * on similar defaults. See kernel/pid.c:pid_idr_init() for details.
*/ #define PIDS_PER_CPU_DEFAULT 1024 #define PIDS_PER_CPU_MIN 8
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