| 56,6 → 56,13 |
|---|
| spinlock_t nrdylock; |
| volatile int nrdy; |
| |
| |
| /** Initialize context switching |
| * |
| * Initialize context switching and lazy FPU |
| * context switching. |
| * |
| */ |
| void before_thread_runs(void) |
| { |
| before_thread_runs_arch(); |
| 63,12 → 70,26 |
|---|
| } |
| |
| |
| /** Initialize scheduler |
| * |
| * Initialize kernel scheduler. |
| * |
| */ |
| void scheduler_init(void) |
| { |
| spinlock_initialize(&nrdylock); |
| } |
| |
| /* cpu_priority_high()'d */ |
| |
| /** Get thread to be scheduled |
| * |
| * Get the optimal thread to be scheduled |
| * according thread accounting and scheduler |
| * policy. |
| * |
| * @return Thread to be scheduled. |
| * |
| */ |
| struct thread *find_best_thread(void) |
| { |
| thread_t *t; |
| 155,11 → 176,17 |
|---|
| |
| } |
| |
| /* |
| * This function prevents low priority threads from starving in rq's. |
| * When it decides to relink rq's, it reconnects respective pointers |
| * so that in result threads with 'pri' greater or equal 'start' are |
| * moved to a higher-priority queue. |
| |
| /** Prevent rq starvation |
| * |
| * Prevent low priority threads from starving in rq's. |
| * |
| * When the function decides to relink rq's, it reconnects |
| * respective pointers so that in result threads with 'pri' |
| * greater or equal 'start' are moved to a higher-priority queue. |
| * |
| * @param start Threshold priority. |
| * |
| */ |
| void relink_rq(int start) |
| { |
| 192,8 → 219,11 |
|---|
| |
| } |
| |
| /* |
| * The scheduler. |
| |
| /** The scheduler |
| * |
| * The thread scheduling procedure. |
| * |
| */ |
| void scheduler(void) |
| { |
| 237,6 → 267,14 |
|---|
| /* not reached */ |
| } |
| |
| |
| /** Scheduler stack switch wrapper |
| * |
| * Second part of the scheduler() function |
| * using new stack. Handling the actual context |
| * switch to a new thread. |
| * |
| */ |
| void scheduler_separated_stack(void) |
| { |
| int priority; |
| 365,10 → 403,15 |
|---|
| /* not reached */ |
| } |
| |
| |
| #ifdef __SMP__ |
| /* |
| * This is the load balancing thread. |
| * It supervises thread supplies for the CPU it's wired to. |
| /** Load balancing thread |
| * |
| * SMP load balancing thread, supervising thread supplies |
| * for the CPU it's wired to. |
| * |
| * @param arg Generic thread argument (unused). |
| * |
| */ |
| void kcpulb(void *arg) |
| { |