/* Initialize the ksched_shared_info */
static inline void ksched_info_init(ksched_shared_info_t *ksched_info)
{
gt_spinlock_init(&(ksched_info->ksched_lock));
gt_spinlock_init(&(ksched_info->uthread_init_lock));
gt_spinlock_init(&(ksched_info->__malloc_lock));
return;
}
extern void kthread_init_runqueue(kthread_runqueue_t *kthread_runq)
{
gt_spinlock_init(&(kthread_runq->kthread_runqlock));
kthread_runq->cfs_rq = rbtree_create();
return;
}
static void *cfs_create_sched_data(int lwp_count)
{
cfs_data_t *cfs_data = ecalloc(sizeof(*cfs_data));
gt_spinlock_init(&cfs_data->lock);
cfs_data->last_cpu_assiged = 0;
/* array of kthread_t, index by kthread_t->cpuid */
cfs_kthread_t *cfs_kthreads = ecalloc(
lwp_count * sizeof(*cfs_kthreads));
cfs_data->cfs_kthreads = cfs_kthreads;
return cfs_data;
}
extern void kthread_init_runqueue(kthread_runqueue_t *kthread_runq)
{
kthread_runq->active_runq = &(kthread_runq->runqueues[0]);
kthread_runq->expires_runq = &(kthread_runq->runqueues[1]);
gt_spinlock_init(&(kthread_runq->kthread_runqlock));
init_runqueue(kthread_runq->active_runq);
init_runqueue(kthread_runq->expires_runq);
TAILQ_INIT(&(kthread_runq->zombie_uthreads));
return;
}
/* creates and inits the sched data */
void *pcs_create_sched_data(int lwp_count)
{
pcs_data_t *pcs_data = ecalloc(sizeof(*pcs_data));
gt_spinlock_init(&pcs_data->lock);
/* array of kthread_t, index by kthread_t->cpuid */
pcs_kthread_t *pcs_kthreads = ecalloc(lwp_count * sizeof(*pcs_kthreads));
pcs_data->pcs_kthreads = pcs_kthreads;
/* array of uthread_t, index by uthread_t->tid */
pcs_data->pcs_uthread_array_length = DEFAULT_UTHREAD_COUNT;
pcs_uthread_t **pcs_uthreads = ecalloc(
pcs_data->pcs_uthread_array_length * sizeof(*pcs_uthreads));
pcs_data->pcs_uthreads = pcs_uthreads;
pcs_data->pcs_uthread_count = 0;
pcs_data->pcs_kthread_count = 0;
return pcs_data;
}
/* called at every kthread_create(). Assumes cfs_init() has already been
* called */
void cfs_kthread_init(kthread_t *k_ctx)
{
checkpoint("k%d: CFS: init kthread", k_ctx->cpuid);
gt_spin_lock(&scheduler.lock);
cfs_kthread_t *cfs_kthread = cfs_get_kthread(k_ctx);
gt_spinlock_init(&cfs_kthread->lock);
cfs_kthread->k_ctx = k_ctx;
cfs_kthread->current_cfs_uthread = NULL;
cfs_kthread->cfs_uthread_count = 0;
cfs_kthread->latency = CFS_DEFAULT_LATENCY_us;
cfs_kthread->min_vruntime = 0;
cfs_kthread->tree = RBTreeCreate(&cfs_rb_compare_key,
&cfs_rb_destroy_key,
&cfs_rb_destroy_info,
&cfs_rb_print_key,
&cfs_rb_print_info);
cfs_data_t *cfs_data = SCHED_DATA;
cfs_data->cfs_kthread_count++;
gt_spin_unlock(&scheduler.lock);
}