| 33,6 → 33,7 |
|---|
| #include <preemption.h> |
| #include <print.h> |
| #include <debug.h> |
| #include <symtab.h> |
| |
| #ifdef CONFIG_SMP |
| |
| 42,9 → 43,12 |
|---|
| * |
| * @param sl Pointer to spinlock_t structure. |
| */ |
| void spinlock_initialize(spinlock_t *sl) |
| void spinlock_initialize(spinlock_t *sl, char *name) |
| { |
| sl->val = 0; |
| #ifdef CONFIG_DEBUG_SPINLOCK |
| sl->name = name; |
| #endif |
| } |
| |
| #ifdef CONFIG_DEBUG_SPINLOCK |
| 59,12 → 63,18 |
|---|
| void spinlock_lock(spinlock_t *sl) |
| { |
| int i = 0; |
| __address caller = ((__u32 *) &sl)[-1]; |
| __address caller = ((__address *) &sl)[-1]; |
| char *symbol; |
| |
| preemption_disable(); |
| while (test_and_set(&sl->val)) { |
| if (i++ > 300000) { |
| printf("cpu%d: looping on spinlock %X, caller=%X\n", CPU->id, sl, caller); |
| printf("cpu%d: looping on spinlock %p:%s, caller=%p", |
| CPU->id, sl, sl->name, caller); |
| symbol = get_symtab_entry(caller); |
| if (symbol) |
| printf("(%s)", symbol); |
| printf("\n"); |
| i = 0; |
| } |
| } |