vasilito
dc68054305
- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.) - Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber) - Restore 20+ local/scripts (audit, lint, test, build helpers) - Restore src/cook/scheduler.rs, status.rs, gnu-config/ - Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh - Recover TLC source from HEAD (was overwritten by 0.2.3 checkout) - Recover 11 local/docs plans from HEAD (were overwritten) - Recover qt6-wayland-smoke symlink from HEAD - Fix MOTD: remove garbled ASCII art, use clean text - Update version: 0.2.0 -> 0.2.4 in os-release, motd, config - Reduce filesystem_size: 1536 -> 512 MiB - Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages - Reduce pcid scheme log verbosity: info -> debug
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2008 Intel Corporation
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* Author: Matthew Wilcox <willy@linux.intel.com>
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*
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* Please see kernel/locking/semaphore.c for documentation of these functions
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*/
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#ifndef __LINUX_SEMAPHORE_H
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#define __LINUX_SEMAPHORE_H
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#include <linux/list.h>
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#include <linux/spinlock.h>
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/* Please don't access any members of this structure directly */
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struct semaphore {
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raw_spinlock_t lock;
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unsigned int count;
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struct semaphore_waiter *first_waiter;
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#ifdef CONFIG_DETECT_HUNG_TASK_BLOCKER
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unsigned long last_holder;
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#endif
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};
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#ifdef CONFIG_DETECT_HUNG_TASK_BLOCKER
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#define __LAST_HOLDER_SEMAPHORE_INITIALIZER \
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, .last_holder = 0UL
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#else
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#define __LAST_HOLDER_SEMAPHORE_INITIALIZER
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#endif
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#define __SEMAPHORE_INITIALIZER(name, n) \
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{ \
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.lock = __RAW_SPIN_LOCK_UNLOCKED((name).lock), \
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.count = n, \
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.first_waiter = NULL \
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__LAST_HOLDER_SEMAPHORE_INITIALIZER \
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}
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/*
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* Unlike mutexes, binary semaphores do not have an owner, so up() can
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* be called in a different thread from the one which called down().
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* It is also safe to call down_trylock() and up() from interrupt
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* context.
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*/
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#define DEFINE_SEMAPHORE(_name, _n) \
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struct semaphore _name = __SEMAPHORE_INITIALIZER(_name, _n)
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static inline void sema_init(struct semaphore *sem, int val)
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{
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static struct lock_class_key __key;
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*sem = (struct semaphore) __SEMAPHORE_INITIALIZER(*sem, val);
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lockdep_init_map(&sem->lock.dep_map, "semaphore->lock", &__key, 0);
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}
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extern void down(struct semaphore *sem);
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extern int __must_check down_interruptible(struct semaphore *sem);
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extern int __must_check down_killable(struct semaphore *sem);
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extern int __must_check down_trylock(struct semaphore *sem);
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extern int __must_check down_timeout(struct semaphore *sem, long jiffies);
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extern void up(struct semaphore *sem);
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extern unsigned long sem_last_holder(struct semaphore *sem);
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#endif /* __LINUX_SEMAPHORE_H */
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