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| Rev 452 | Rev 458 | ||
|---|---|---|---|
| Line 59... | Line 59... | ||
| 59 | * |
59 | * |
| 60 | */ |
60 | */ |
| 61 | void before_thread_runs(void) |
61 | void before_thread_runs(void) |
| 62 | { |
62 | { |
| 63 | before_thread_runs_arch(); |
63 | before_thread_runs_arch(); |
| 64 | #ifdef FPU_LAZY |
64 | #ifdef CONFIG_FPU_LAZY |
| 65 | if(THREAD==CPU->fpu_owner) |
65 | if(THREAD==CPU->fpu_owner) |
| 66 | fpu_enable(); |
66 | fpu_enable(); |
| 67 | else |
67 | else |
| 68 | fpu_disable(); |
68 | fpu_disable(); |
| 69 | #else |
69 | #else |
| Line 75... | Line 75... | ||
| 75 | THREAD->fpu_context_exists=1; |
75 | THREAD->fpu_context_exists=1; |
| 76 | } |
76 | } |
| 77 | #endif |
77 | #endif |
| 78 | } |
78 | } |
| 79 | 79 | ||
| 80 | #ifdef FPU_LAZY |
80 | #ifdef CONFIG_FPU_LAZY |
| 81 | void scheduler_fpu_lazy_request(void) |
81 | void scheduler_fpu_lazy_request(void) |
| 82 | { |
82 | { |
| 83 | fpu_enable(); |
83 | fpu_enable(); |
| 84 | if (CPU->fpu_owner != NULL) { |
84 | if (CPU->fpu_owner != NULL) { |
| 85 | fpu_context_save(&CPU->fpu_owner->saved_fpu_context); |
85 | fpu_context_save(&CPU->fpu_owner->saved_fpu_context); |
| Line 132... | Line 132... | ||
| 132 | spinlock_unlock(&CPU->lock); |
132 | spinlock_unlock(&CPU->lock); |
| 133 | 133 | ||
| 134 | interrupts_enable(); |
134 | interrupts_enable(); |
| 135 | 135 | ||
| 136 | if (n == 0) { |
136 | if (n == 0) { |
| 137 | #ifdef __SMP__ |
137 | #ifdef CONFIG_SMP |
| 138 | /* |
138 | /* |
| 139 | * If the load balancing thread is not running, wake it up and |
139 | * If the load balancing thread is not running, wake it up and |
| 140 | * set CPU-private flag that the kcpulb has been started. |
140 | * set CPU-private flag that the kcpulb has been started. |
| 141 | */ |
141 | */ |
| 142 | if (test_and_set(&CPU->kcpulbstarted) == 0) { |
142 | if (test_and_set(&CPU->kcpulbstarted) == 0) { |
| 143 | waitq_wakeup(&CPU->kcpulb_wq, 0); |
143 | waitq_wakeup(&CPU->kcpulb_wq, 0); |
| 144 | goto loop; |
144 | goto loop; |
| 145 | } |
145 | } |
| 146 | #endif /* __SMP__ */ |
146 | #endif /* CONFIG_SMP */ |
| 147 | 147 | ||
| 148 | /* |
148 | /* |
| 149 | * For there was nothing to run, the CPU goes to sleep |
149 | * For there was nothing to run, the CPU goes to sleep |
| 150 | * until a hardware interrupt or an IPI comes. |
150 | * until a hardware interrupt or an IPI comes. |
| 151 | * This improves energy saving and hyperthreading. |
151 | * This improves energy saving and hyperthreading. |
| Line 410... | Line 410... | ||
| 410 | if (haltstate) |
410 | if (haltstate) |
| 411 | halt(); |
411 | halt(); |
| 412 | 412 | ||
| 413 | if (THREAD) { |
413 | if (THREAD) { |
| 414 | spinlock_lock(&THREAD->lock); |
414 | spinlock_lock(&THREAD->lock); |
| 415 | #ifndef FPU_LAZY |
415 | #ifndef CONFIG_FPU_LAZY |
| 416 | fpu_context_save(&(THREAD->saved_fpu_context)); |
416 | fpu_context_save(&(THREAD->saved_fpu_context)); |
| 417 | #endif |
417 | #endif |
| 418 | if (!context_save(&THREAD->saved_context)) { |
418 | if (!context_save(&THREAD->saved_context)) { |
| 419 | /* |
419 | /* |
| 420 | * This is the place where threads leave scheduler(); |
420 | * This is the place where threads leave scheduler(); |
| Line 460... | Line 460... | ||
| 460 | 460 | ||
| 461 | 461 | ||
| 462 | 462 | ||
| 463 | 463 | ||
| 464 | 464 | ||
| 465 | #ifdef __SMP__ |
465 | #ifdef CONFIG_SMP |
| 466 | /** Load balancing thread |
466 | /** Load balancing thread |
| 467 | * |
467 | * |
| 468 | * SMP load balancing thread, supervising thread supplies |
468 | * SMP load balancing thread, supervising thread supplies |
| 469 | * for the CPU it's wired to. |
469 | * for the CPU it's wired to. |
| 470 | * |
470 | * |
| Line 621... | Line 621... | ||
| 621 | */ |
621 | */ |
| 622 | CPU->kcpulbstarted = 0; |
622 | CPU->kcpulbstarted = 0; |
| 623 | goto loop; |
623 | goto loop; |
| 624 | } |
624 | } |
| 625 | 625 | ||
| 626 | #endif /* __SMP__ */ |
626 | #endif /* CONFIG_SMP */ |