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45 lines
1.6 KiB
45 lines
1.6 KiB
/* 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 <[email protected]> |
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*/ |
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/* |
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* This is the control structure for tasks blocked on mutex, which resides |
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* on the blocked task's kernel stack: |
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*/ |
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struct mutex_waiter { |
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struct list_head list; |
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struct task_struct *task; |
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struct ww_acquire_ctx *ww_ctx; |
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#ifdef CONFIG_DEBUG_MUTEXES |
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void *magic; |
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#endif |
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}; |
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#ifdef CONFIG_DEBUG_MUTEXES |
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extern void debug_mutex_lock_common(struct mutex *lock, |
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struct mutex_waiter *waiter); |
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extern void debug_mutex_wake_waiter(struct mutex *lock, |
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struct mutex_waiter *waiter); |
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extern void debug_mutex_free_waiter(struct mutex_waiter *waiter); |
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extern void debug_mutex_add_waiter(struct mutex *lock, |
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struct mutex_waiter *waiter, |
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struct task_struct *task); |
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extern void debug_mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter, |
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struct task_struct *task); |
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extern void debug_mutex_unlock(struct mutex *lock); |
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extern void debug_mutex_init(struct mutex *lock, const char *name, |
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struct lock_class_key *key); |
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#else /* CONFIG_DEBUG_MUTEXES */ |
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# define debug_mutex_lock_common(lock, waiter) do { } while (0) |
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# define debug_mutex_wake_waiter(lock, waiter) do { } while (0) |
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# define debug_mutex_free_waiter(waiter) do { } while (0) |
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# define debug_mutex_add_waiter(lock, waiter, ti) do { } while (0) |
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# define debug_mutex_remove_waiter(lock, waiter, ti) do { } while (0) |
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# define debug_mutex_unlock(lock) do { } while (0) |
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# define debug_mutex_init(lock, name, key) do { } while (0) |
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#endif /* !CONFIG_DEBUG_MUTEXES */
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