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 * @param sl Pointer to spinlock_t structure.
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 * @param sl Pointer to spinlock_t structure.
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 */
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 */
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void spinlock_lock(spinlock_t *sl)
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void spinlock_lock(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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    __address caller = CALLER(sl);
 - 
 
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    char *symbol;
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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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        if (i++ > 300000) {
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        if (i++ > 300000) {
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            printf("cpu%d: looping on spinlock %p:%s, caller=%p",
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            printf("cpu%d: looping on spinlock %p:%s, caller=%p",
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                   CPU->id, sl, sl->name, caller);
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                   CPU->id, sl, sl->name, CALLER);
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            symbol = get_symtab_entry(caller);
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            symbol = get_symtab_entry(CALLER);
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            if (symbol)
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            if (symbol)
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                printf("(%s)", symbol);
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                printf("(%s)", symbol);
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            printf("\n");
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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;