extern int
select_prio (struct path * pp)
{
struct mpentry * mpe;
if ((mpe = find_mpe(pp->wwid))) {
if (mpe->prio_name) {
pp->prio = prio_lookup(mpe->prio_name);
prio_set_args(pp->prio, mpe->prio_args);
condlog(3, "%s: prio = %s (LUN setting)",
pp->dev, pp->prio->name);
return 0;
}
}
if (pp->hwe && pp->hwe->prio_name) {
pp->prio = prio_lookup(pp->hwe->prio_name);
prio_set_args(pp->prio, pp->hwe->prio_args);
condlog(3, "%s: prio = %s (controller setting)",
pp->dev, pp->hwe->prio_name);
condlog(3, "%s: prio args = %s (controller setting)",
pp->dev, pp->hwe->prio_args);
return 0;
}
if (conf->prio_name) {
pp->prio = prio_lookup(conf->prio_name);
prio_set_args(pp->prio, conf->prio_args);
condlog(3, "%s: prio = %s (config file default)",
pp->dev, conf->prio_name);
condlog(3, "%s: prio args = %s (config file default)",
pp->dev, conf->prio_args);
return 0;
}
pp->prio = prio_lookup(DEFAULT_PRIO);
prio_set_args(pp->prio, DEFAULT_PRIO_ARGS);
condlog(3, "%s: prio = %s (internal default)",
pp->dev, DEFAULT_PRIO);
condlog(3, "%s: prio = %s (internal default)",
pp->dev, DEFAULT_PRIO_ARGS);
return 0;
}
yarn_t yarn_new ( void (*routine)(void*), void* udata, int nice )
{
// grab memory
yarn* active_yarn;
yarn_t pid;
//prepare_context(0);
pool* p = get_yarn_pool();
active_yarn = (yarn*)pool_allocate(p);
assert(active_yarn);
// prepare the context
init_context(&active_yarn->context);
// set up stack and such
active_yarn->stackBase = allocate_stack(&(active_yarn->context));
// run yarn_context_make to direct it over to the bootstrap
prepare_context(active_yarn, routine, udata);
// insert it into the yarn list
pid = list_insert(active_yarn, nice);
if (live)
master_sched_schedule(pid, prio_lookup(nice));
return pid;
}
void yarn_process ( unsigned long otherThreadCount, int primaryScheduler, int secondaryScheduler )
{
// look through yarns
unsigned long nprocs;
int i;
#ifdef YARNS_ENABLE_SMP
nprocs = numprocs() - otherThreadCount;
if (nprocs < 1) nprocs = 1;
master_sched_init(nprocs, primaryScheduler, secondaryScheduler);
#else
master_sched_init(1, primaryScheduler, secondaryScheduler);
#endif
#if YARNS_SYNERGY == YARNS_SYNERGY_PREEMPTIVE
preempt_init();
preempt_handle = yarn_preempt_handle;
#endif
TTDINIT_MAIN();
wg = wait_graph_new();
// set up all the yarns in the scheduler
for (i = 1; i < maxpid; i++)
{
master_sched_schedule(i, prio_lookup(PTABLE(i)->nice));
}
live = 1;
DEBUG("starting with context API: %s\n", YARN_CONTEXT_API);
#ifdef YARNS_ENABLE_SMP
// create the secondary threads
for (i = 1; i < nprocs; i++)
{
#if YARNS_SYNERGY == YARNS_SYNERGY_PREEMPTIVE
preempt_disable();
#endif
pthread_create(&threads[i], NULL, (void* (*)(void*))yarn_processor, (void*)i);
}
#endif
threads[i] = pthread_self();
coreCount = nprocs;
// run the primary thread
yarn_processor(0);
}
