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locking: remove unused double_spin_lock() 

double_spin_lock() has no callers, and it can't be used without additional
lockdep annotations, remove it.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Oleg Nesterov 2008-04-04 20:54:10 +02:00 committed by Thomas Gleixner
parent 8e60e05fdc
commit 3f3eafc921
1 changed files with 0 additions and 37 deletions
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37
include/linux/spinlock.h
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@ -295,43 +295,6 @@ do { \
1 : ({ local_irq_restore(flags); 0; }); \
})
/*
* Locks two spinlocks l1 and l2.
* l1_first indicates if spinlock l1 should be taken first.
*/
static inline void double_spin_lock(spinlock_t *l1, spinlock_t *l2,
bool l1_first)
__acquires(l1)
__acquires(l2)
{
if (l1_first) {
spin_lock(l1);
spin_lock(l2);
} else {
spin_lock(l2);
spin_lock(l1);
}
}
/*
* Unlocks two spinlocks l1 and l2.
* l1_taken_first indicates if spinlock l1 was taken first and therefore
* should be released after spinlock l2.
*/
static inline void double_spin_unlock(spinlock_t *l1, spinlock_t *l2,
bool l1_taken_first)
__releases(l1)
__releases(l2)
{
if (l1_taken_first) {
spin_unlock(l2);
spin_unlock(l1);
} else {
spin_unlock(l1);
spin_unlock(l2);
}
}
/*
* Pull the atomic_t declaration:
* (asm-mips/atomic.h needs above definitions)