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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_THREADS_H
#define _LINUX_THREADS_H
/*
* 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 (CONFIG_BASE_SMALL ? 0x1000 : 0x8000)
/*
* A maximum of 4 million PIDs should be enough for a while.
* [NOTE: PID/TIDs are limited to 2^29 ~= 500+ million, see futex.h.]
*/
#define PID_MAX_LIMIT (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:pidmap_init() for details.
*/
#define PIDS_PER_CPU_DEFAULT 1024
#define PIDS_PER_CPU_MIN 8
#endif
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