| 96,6 → 96,7 |
|---|
| #ifdef CONFIG_FPU_LAZY |
| void scheduler_fpu_lazy_request(void) |
| { |
| restart: |
| fpu_enable(); |
| spinlock_lock(&CPU->lock); |
| |
| 106,6 → 107,7 |
|---|
| /* don't prevent migration */ |
| CPU->fpu_owner->fpu_context_engaged=0; |
| spinlock_unlock(&CPU->fpu_owner->lock); |
| CPU->fpu_owner = NULL; |
| } |
| |
| spinlock_lock(&THREAD->lock); |
| 116,9 → 118,11 |
|---|
| if (!THREAD->saved_fpu_context) { |
| /* Might sleep */ |
| spinlock_unlock(&THREAD->lock); |
| spinlock_unlock(&CPU->lock); |
| THREAD->saved_fpu_context = slab_alloc(fpu_context_slab, |
| 0); |
| spinlock_lock(&THREAD->lock); |
| /* We may have switched CPUs during slab_alloc */ |
| goto restart; |
| } |
| fpu_init(); |
| THREAD->fpu_context_exists=1; |