mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 08:02:30 +00:00
5b91a75b33
pidmap_init() has already been replaced with pid_idr_init() in the commit
95846ecf9d ("pid: replace pid bitmap implementation with IDR API").
Cleanup the stale comment which still mentions it.
Link: https://lkml.kernel.org/r/20210714120713.19825-1-itazur@amazon.com
Signed-off-by: Takahiro Itazuri <itazur@amazon.com>
Cc: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/* 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 2^30 ~= 1 billion, see FUTEX_TID_MASK.]
|
|
*/
|
|
#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:pid_idr_init() for details.
|
|
*/
|
|
#define PIDS_PER_CPU_DEFAULT 1024
|
|
#define PIDS_PER_CPU_MIN 8
|
|
|
|
#endif
|