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- Assert that any process that has statclock called on it has both a

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stats structure and a vmspace as this should always be true rather
  than checking the always true condition in an if statement.
- Remove never-false check: if ((ru = &pstats->p_ru) != NULL)
- Remove pstats variable that is only used once and inline its one use
  instead.
This commit is contained in:
jhb 2004-07-02 03:48:09 +00:00
parent 1f03137b23
commit 2c858bc6df
1 changed files with 10 additions and 11 deletions
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21
sys/kern/kern_clock.c
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@ -374,7 +374,6 @@ void
statclock(frame)
register struct clockframe *frame;
{
struct pstats *pstats;
struct rusage *ru;
struct vmspace *vm;
struct thread *td;
@ -427,16 +426,16 @@ statclock(frame)
sched_clock(td);
/* Update resource usage integrals and maximums. */
if ((pstats = p->p_stats) != NULL &&
(ru = &pstats->p_ru) != NULL &&
(vm = p->p_vmspace) != NULL) {
ru->ru_ixrss += pgtok(vm->vm_tsize);
ru->ru_idrss += pgtok(vm->vm_dsize);
ru->ru_isrss += pgtok(vm->vm_ssize);
rss = pgtok(vmspace_resident_count(vm));
if (ru->ru_maxrss < rss)
ru->ru_maxrss = rss;
}
MPASS(p->p_stats != NULL);
MPASS(p->p_vmspace != NULL);
vm = p->p_vmspace;
ru = &p->p_stats->p_ru;
ru->ru_ixrss += pgtok(vm->vm_tsize);
ru->ru_idrss += pgtok(vm->vm_dsize);
ru->ru_isrss += pgtok(vm->vm_ssize);
rss = pgtok(vmspace_resident_count(vm));
if (ru->ru_maxrss < rss)
ru->ru_maxrss = rss;
mtx_unlock_spin_flags(&sched_lock, MTX_QUIET);
}