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use also the ticket lock workaround for irq save spinlocks

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This commit is contained in:
Stefan Lankes 2011-08-27 05:25:47 -07:00
parent 2acd2a2f57
commit 298670b0db
1 changed files with 8 additions and 0 deletions
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8
include/metalsvm/spinlock.h
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@ -183,10 +183,14 @@ inline static int spinlock_irqsave_lock(spinlock_irqsave_t* s) {
return 0;
}
#if 0
ticket = atomic_int32_inc(&s->queue);
while (atomic_int32_read(&s->dequeue) != ticket) {
NOP1;
}
#else
while( atomic_int32_test_and_set(&s->dequeue,0) );
#endif
s->coreid = CORE_ID;
s->flags = flags;
@ -211,7 +215,11 @@ inline static int spinlock_irqsave_unlock(spinlock_irqsave_t* s) {
flags = s->flags;
s->coreid = (uint32_t) -1;
s->flags = 0;
#if 0
atomic_int32_inc(&s->dequeue);
#else
atomic_int32_set(&s->dequeue,1);
#endif
irq_nested_enable(flags);
}