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- Make setting of IT_ENTROPY a bit simpler in ithread_update().

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- Tweak the updating of the ithread name in ithread_update() so that the
  '+' and '*' characters for device names that were too short only get
  added at the end after as many device names as possible were fit into
  the allocated space.  Prior to this, some long devices would result
  in '+' chars showing up between two different devices rather than at the
  end.
This commit is contained in:
John Baldwin 2004-11-05 19:11:24 +00:00
parent 0de3e7280f
commit 0811d60abc
1 changed files with 10 additions and 10 deletions
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20
sys/kern/kern_intr.c
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@ -129,7 +129,7 @@ ithread_update(struct ithd *ithd)
struct intrhand *ih;
struct thread *td;
struct proc *p;
int entropy;
int missed;
mtx_assert(&ithd->it_lock, MA_OWNED);
td = ithd->it_td;
@ -138,6 +138,7 @@ ithread_update(struct ithd *ithd)
p = td->td_proc;
strlcpy(p->p_comm, ithd->it_name, sizeof(p->p_comm));
ithd->it_flags &= ~IT_ENTROPY;
ih = TAILQ_FIRST(&ithd->it_handlers);
if (ih == NULL) {
@ -145,33 +146,32 @@ ithread_update(struct ithd *ithd)
td->td_priority = PRI_MAX_ITHD;
td->td_base_pri = PRI_MAX_ITHD;
mtx_unlock_spin(&sched_lock);
ithd->it_flags &= ~IT_ENTROPY;
return;
}
entropy = 0;
mtx_lock_spin(&sched_lock);
td->td_priority = ih->ih_pri;
td->td_base_pri = ih->ih_pri;
mtx_unlock_spin(&sched_lock);
missed = 0;
TAILQ_FOREACH(ih, &ithd->it_handlers, ih_next) {
if (strlen(p->p_comm) + strlen(ih->ih_name) + 1 <
sizeof(p->p_comm)) {
strcat(p->p_comm, " ");
strcat(p->p_comm, ih->ih_name);
} else if (strlen(p->p_comm) + 1 == sizeof(p->p_comm)) {
} else
missed++;
if (ih->ih_flags & IH_ENTROPY)
ithd->it_flags |= IT_ENTROPY;
}
while (missed-- > 0) {
if (strlen(p->p_comm) + 1 == sizeof(p->p_comm)) {
if (p->p_comm[sizeof(p->p_comm) - 2] == '+')
p->p_comm[sizeof(p->p_comm) - 2] = '*';
else
p->p_comm[sizeof(p->p_comm) - 2] = '+';
} else
strcat(p->p_comm, "+");
if (ih->ih_flags & IH_ENTROPY)
entropy++;
}
if (entropy)
ithd->it_flags |= IT_ENTROPY;
else
ithd->it_flags &= ~IT_ENTROPY;
CTR2(KTR_INTR, "%s: updated %s", __func__, p->p_comm);
}