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v0.8.1
https://github.com/torvalds/linux
02 December 2023, 22:23:51 UTC
Revision 331c4ee7faa4ee1e1404c872a139784753100498 authored by Vlad Yasevich on 10 October 2006, 04:34:04 UTC, committed by David S. Miller on 12 October 2006, 06:59:44 UTC 
[SCTP]: Fix receive buffer accounting.
 
When doing receiver buffer accounting, we always used skb->truesize.
This is problematic when processing bundled DATA chunks because for
every DATA chunk that could be small part of one large skb, we would
charge the size of the entire skb.  The new approach is to store the
size of the DATA chunk we are accounting for in the sctp_ulpevent
structure and use that stored value for accounting.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent 6e8c751
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Tip revision: 331c4ee7faa4ee1e1404c872a139784753100498 authored by Vlad Yasevich on 10 October 2006, 04:34:04 UTC
[SCTP]: Fix receive buffer accounting.
Tip revision: 331c4ee
mutex-debug.h 
/*
 * Mutexes: blocking mutual exclusion locks
 *
 * started by Ingo Molnar:
 *
 *  Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
 *
 * This file contains mutex debugging related internal declarations,
 * prototypes and inline functions, for the CONFIG_DEBUG_MUTEXES case.
 * More details are in kernel/mutex-debug.c.
 */

/*
 * This must be called with lock->wait_lock held.
 */
extern void
debug_mutex_set_owner(struct mutex *lock, struct thread_info *new_owner);

static inline void debug_mutex_clear_owner(struct mutex *lock)
{
	lock->owner = NULL;
}

extern void debug_mutex_lock_common(struct mutex *lock,
				    struct mutex_waiter *waiter);
extern void debug_mutex_wake_waiter(struct mutex *lock,
				    struct mutex_waiter *waiter);
extern void debug_mutex_free_waiter(struct mutex_waiter *waiter);
extern void debug_mutex_add_waiter(struct mutex *lock,
				   struct mutex_waiter *waiter,
				   struct thread_info *ti);
extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
				struct thread_info *ti);
extern void debug_mutex_unlock(struct mutex *lock);
extern void debug_mutex_init(struct mutex *lock, const char *name,
			     struct lock_class_key *key);

#define spin_lock_mutex(lock, flags)			\
	do {						\
		struct mutex *l = container_of(lock, struct mutex, wait_lock); \
							\
		DEBUG_LOCKS_WARN_ON(in_interrupt());	\
		local_irq_save(flags);			\
		__raw_spin_lock(&(lock)->raw_lock);	\
		DEBUG_LOCKS_WARN_ON(l->magic != l);	\
	} while (0)

#define spin_unlock_mutex(lock, flags)			\
	do {						\
		__raw_spin_unlock(&(lock)->raw_lock);	\
		local_irq_restore(flags);		\
		preempt_check_resched();		\
	} while (0)
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