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78273df7f6
The goal is to get sched.h down to a type only header, so the main thing happening in this patchset is splitting out various _types.h headers and dependency fixups, as well as moving some things out of sched.h to better locations. This is prep work for the memory allocation profiling patchset which adds new sched.h interdepencencies. Testing - it's been in -next, and fixes from pretty much all architectures have percolated in - nothing major. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAmWfBwwACgkQE6szbY3K bnZPwBAAmuRojXaeWxi01IPIOehSGDe68vw44PR9glEMZvxdnZuPOdvE4/+245/L bRKU2WBCjBUokUbV9msIShwRkFTZAmEMPNfPAAsFMA+VXeDYHKB+ZRdwTggNAQ+I SG6fZgh5m0HsewCDxU8oqVHkjVq4fXn0cy+aL6xLEd9gu67GoBzX2pDieS2Kvy6j jnyoKTxFwb+LTQgph0P4EIpq5I2umAsdLwdSR8EJ+8e9NiNvMo1pI00Lx/ntAnFZ JftWUJcMy3TQ5u1GkyfQN9y/yThX1bZK5GvmHS9SJ2Dkacaus5d+xaKCHtRuFS1I 7C6b8PsNgRczUMumBXus44HdlNfNs1yU3lvVxFvBIPE1qC9pYRHrkWIXXIocXLLC oxTEJ6B2G3BQZVQgLIA4fOaxMVhmvKffi/aEZLi9vN9VVosd1a6XNKI6KbyRnXFp GSs9qDqszhn5I3GYNlDNQTc/8UsRlhPFgS6nS0By6QnvxtGi9QkU2tBRBsXvqwCy cLoCYIhc2tvugHvld70dz26umiJ4rnmxGlobStNoigDvIKAIUt1UmIdr1so8P8eH xehnL9ZcOX6xnANDL0AqMFFHV6I58CJynhFdUoXfVQf/DWLGX48mpi9LVNsYBzsI CAwVOAQ0UjGrpdWmJ9ueY/ABYqg9vRjzaDEXQ+MhAYO55CLaVsg= =3tyT -----END PGP SIGNATURE----- Merge tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs Pull header cleanups from Kent Overstreet: "The goal is to get sched.h down to a type only header, so the main thing happening in this patchset is splitting out various _types.h headers and dependency fixups, as well as moving some things out of sched.h to better locations. This is prep work for the memory allocation profiling patchset which adds new sched.h interdepencencies" * tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs: (51 commits) Kill sched.h dependency on rcupdate.h kill unnecessary thread_info.h include Kill unnecessary kernel.h include preempt.h: Kill dependency on list.h rseq: Split out rseq.h from sched.h LoongArch: signal.c: add header file to fix build error restart_block: Trim includes lockdep: move held_lock to lockdep_types.h sem: Split out sem_types.h uidgid: Split out uidgid_types.h seccomp: Split out seccomp_types.h refcount: Split out refcount_types.h uapi/linux/resource.h: fix include x86/signal: kill dependency on time.h syscall_user_dispatch.h: split out *_types.h mm_types_task.h: Trim dependencies Split out irqflags_types.h ipc: Kill bogus dependency on spinlock.h shm: Slim down dependencies workqueue: Split out workqueue_types.h ...
177 lines
5.2 KiB
C
177 lines
5.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Mutexes: blocking mutual exclusion locks
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*
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* started by Ingo Molnar:
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*
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* Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
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*
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* This file contains the main data structure and API definitions.
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*/
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#ifndef __LINUX_MUTEX_H
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#define __LINUX_MUTEX_H
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#include <asm/current.h>
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#include <linux/list.h>
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#include <linux/spinlock_types.h>
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#include <linux/lockdep.h>
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#include <linux/atomic.h>
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#include <asm/processor.h>
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#include <linux/osq_lock.h>
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#include <linux/debug_locks.h>
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#include <linux/cleanup.h>
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#include <linux/mutex_types.h>
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#ifdef CONFIG_DEBUG_LOCK_ALLOC
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# define __DEP_MAP_MUTEX_INITIALIZER(lockname) \
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, .dep_map = { \
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.name = #lockname, \
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.wait_type_inner = LD_WAIT_SLEEP, \
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}
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#else
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# define __DEP_MAP_MUTEX_INITIALIZER(lockname)
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#endif
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#ifndef CONFIG_PREEMPT_RT
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#ifdef CONFIG_DEBUG_MUTEXES
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#define __DEBUG_MUTEX_INITIALIZER(lockname) \
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, .magic = &lockname
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extern void mutex_destroy(struct mutex *lock);
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#else
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# define __DEBUG_MUTEX_INITIALIZER(lockname)
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static inline void mutex_destroy(struct mutex *lock) {}
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#endif
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/**
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* mutex_init - initialize the mutex
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* @mutex: the mutex to be initialized
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*
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* Initialize the mutex to unlocked state.
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*
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* It is not allowed to initialize an already locked mutex.
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*/
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#define mutex_init(mutex) \
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do { \
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static struct lock_class_key __key; \
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\
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__mutex_init((mutex), #mutex, &__key); \
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} while (0)
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#define __MUTEX_INITIALIZER(lockname) \
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{ .owner = ATOMIC_LONG_INIT(0) \
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, .wait_lock = __RAW_SPIN_LOCK_UNLOCKED(lockname.wait_lock) \
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, .wait_list = LIST_HEAD_INIT(lockname.wait_list) \
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__DEBUG_MUTEX_INITIALIZER(lockname) \
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__DEP_MAP_MUTEX_INITIALIZER(lockname) }
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#define DEFINE_MUTEX(mutexname) \
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struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)
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extern void __mutex_init(struct mutex *lock, const char *name,
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struct lock_class_key *key);
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/**
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* mutex_is_locked - is the mutex locked
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* @lock: the mutex to be queried
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*
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* Returns true if the mutex is locked, false if unlocked.
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*/
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extern bool mutex_is_locked(struct mutex *lock);
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#else /* !CONFIG_PREEMPT_RT */
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/*
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* Preempt-RT variant based on rtmutexes.
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*/
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#define __MUTEX_INITIALIZER(mutexname) \
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{ \
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.rtmutex = __RT_MUTEX_BASE_INITIALIZER(mutexname.rtmutex) \
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__DEP_MAP_MUTEX_INITIALIZER(mutexname) \
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}
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#define DEFINE_MUTEX(mutexname) \
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struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)
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extern void __mutex_rt_init(struct mutex *lock, const char *name,
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struct lock_class_key *key);
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extern int mutex_trylock(struct mutex *lock);
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static inline void mutex_destroy(struct mutex *lock) { }
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#define mutex_is_locked(l) rt_mutex_base_is_locked(&(l)->rtmutex)
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#define __mutex_init(mutex, name, key) \
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do { \
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rt_mutex_base_init(&(mutex)->rtmutex); \
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__mutex_rt_init((mutex), name, key); \
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} while (0)
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#define mutex_init(mutex) \
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do { \
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static struct lock_class_key __key; \
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\
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__mutex_init((mutex), #mutex, &__key); \
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} while (0)
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#endif /* CONFIG_PREEMPT_RT */
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/*
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* See kernel/locking/mutex.c for detailed documentation of these APIs.
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* Also see Documentation/locking/mutex-design.rst.
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*/
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#ifdef CONFIG_DEBUG_LOCK_ALLOC
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extern void mutex_lock_nested(struct mutex *lock, unsigned int subclass);
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extern void _mutex_lock_nest_lock(struct mutex *lock, struct lockdep_map *nest_lock);
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extern int __must_check mutex_lock_interruptible_nested(struct mutex *lock,
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unsigned int subclass);
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extern int __must_check mutex_lock_killable_nested(struct mutex *lock,
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unsigned int subclass);
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extern void mutex_lock_io_nested(struct mutex *lock, unsigned int subclass);
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#define mutex_lock(lock) mutex_lock_nested(lock, 0)
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#define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0)
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#define mutex_lock_killable(lock) mutex_lock_killable_nested(lock, 0)
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#define mutex_lock_io(lock) mutex_lock_io_nested(lock, 0)
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#define mutex_lock_nest_lock(lock, nest_lock) \
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do { \
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typecheck(struct lockdep_map *, &(nest_lock)->dep_map); \
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_mutex_lock_nest_lock(lock, &(nest_lock)->dep_map); \
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} while (0)
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#else
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extern void mutex_lock(struct mutex *lock);
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extern int __must_check mutex_lock_interruptible(struct mutex *lock);
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extern int __must_check mutex_lock_killable(struct mutex *lock);
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extern void mutex_lock_io(struct mutex *lock);
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# define mutex_lock_nested(lock, subclass) mutex_lock(lock)
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# define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock)
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# define mutex_lock_killable_nested(lock, subclass) mutex_lock_killable(lock)
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# define mutex_lock_nest_lock(lock, nest_lock) mutex_lock(lock)
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# define mutex_lock_io_nested(lock, subclass) mutex_lock_io(lock)
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#endif
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/*
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* NOTE: mutex_trylock() follows the spin_trylock() convention,
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* not the down_trylock() convention!
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*
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* Returns 1 if the mutex has been acquired successfully, and 0 on contention.
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*/
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extern int mutex_trylock(struct mutex *lock);
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extern void mutex_unlock(struct mutex *lock);
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extern int atomic_dec_and_mutex_lock(atomic_t *cnt, struct mutex *lock);
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DEFINE_GUARD(mutex, struct mutex *, mutex_lock(_T), mutex_unlock(_T))
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DEFINE_GUARD_COND(mutex, _try, mutex_trylock(_T))
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DEFINE_GUARD_COND(mutex, _intr, mutex_lock_interruptible(_T) == 0)
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#endif /* __LINUX_MUTEX_H */
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