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Rev 3424 Rev 4377
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 * @{
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 * @{
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 */
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 */
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/**
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/**
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 * @file
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 * @file
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 * @brief   Spinlocks.
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 * @brief Spinlocks.
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 */
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 */
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#include <synch/spinlock.h>
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#include <synch/spinlock.h>
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#include <atomic.h>
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#include <atomic.h>
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#include <arch/barrier.h>
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#include <arch/barrier.h>
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#include <arch.h>
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#include <arch.h>
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#include <preemption.h>
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#include <preemption.h>
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 */
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 */
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#ifdef CONFIG_DEBUG_SPINLOCK
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#ifdef CONFIG_DEBUG_SPINLOCK
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void spinlock_lock_debug(spinlock_t *sl)
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void spinlock_lock_debug(spinlock_t *sl)
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{
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{
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    count_t i = 0;
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    count_t i = 0;
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    char *symbol;
 - 
 
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    bool deadlock_reported = false;
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    bool deadlock_reported = false;
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    preemption_disable();
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    preemption_disable();
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    while (test_and_set(&sl->val)) {
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    while (test_and_set(&sl->val)) {
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#ifdef CONFIG_FB
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#ifdef CONFIG_FB
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        if (sl == &fb_lock)
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        if (sl == &fb_lock)
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            continue;
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            continue;
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#endif
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#endif
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        if (i++ > DEADLOCK_THRESHOLD) {
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        if (i++ > DEADLOCK_THRESHOLD) {
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            printf("cpu%u: looping on spinlock %" PRIp ":%s, caller=%" PRIp,
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            printf("cpu%u: looping on spinlock %" PRIp ":%s, "
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                CPU->id, sl, sl->name, CALLER);
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                "caller=%" PRIp "(%s)\n", CPU->id, sl, sl->name,
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            symbol = get_symtab_entry(CALLER);
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                CALLER, symtab_fmt_name_lookup(CALLER));
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            if (symbol)
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                printf("(%s)", symbol);
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            printf("\n");
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            i = 0;
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            i = 0;
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            deadlock_reported = true;
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            deadlock_reported = true;
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        }
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        }
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    }
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    }
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