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Make the schedlock saved critical section state a per-thread property.

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This commit is contained in:
John Baldwin 2001-06-30 03:11:26 +00:00
parent 5916bd20ba
commit a300519d41
2 changed files with 3 additions and 4 deletions
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4
sys/kern/kern_intr.c
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@ -344,7 +344,6 @@ ithread_schedule(struct ithd *ithread, int do_switch)
{
struct int_entropy entropy;
struct proc *p;
critical_t savecrit;
/*
* If no ithread or no handlers, then we have a stray interrupt.
@ -383,13 +382,10 @@ ithread_schedule(struct ithd *ithread, int do_switch)
p->p_stat = SRUN;
setrunqueue(p);
if (do_switch && curproc->p_stat == SRUN) {
savecrit = sched_lock.mtx_savecrit;
mtx_intr_enable(&sched_lock);
if (curproc != PCPU_GET(idleproc))
setrunqueue(curproc);
curproc->p_stats->p_ru.ru_nivcsw++;
mi_switch();
sched_lock.mtx_savecrit = savecrit;
} else
need_resched(curproc);
} else {

3
sys/kern/kern_synch.c
View file

@ -821,6 +821,7 @@ mi_switch()
#if 0
register struct rlimit *rlim;
#endif
critical_t sched_crit;
u_int sched_nest;
mtx_assert(&sched_lock, MA_OWNED | MA_NOTRECURSED);
@ -881,12 +882,14 @@ mi_switch()
PCPU_SET(switchtime, new_switchtime);
CTR3(KTR_PROC, "mi_switch: old proc %p (pid %d, %s)", p, p->p_pid,
p->p_comm);
sched_crit = sched_lock.mtx_savecrit;
sched_nest = sched_lock.mtx_recurse;
curproc->p_lastcpu = curproc->p_oncpu;
curproc->p_oncpu = NOCPU;
clear_resched(curproc);
cpu_switch();
curproc->p_oncpu = PCPU_GET(cpuid);
sched_lock.mtx_savecrit = sched_crit;
sched_lock.mtx_recurse = sched_nest;
sched_lock.mtx_lock = (uintptr_t)curproc;
CTR3(KTR_PROC, "mi_switch: new proc %p (pid %d, %s)", p, p->p_pid,