diff options
Diffstat (limited to 'usr/src/uts/common/disp/fss.c')
| -rw-r--r-- | usr/src/uts/common/disp/fss.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/usr/src/uts/common/disp/fss.c b/usr/src/uts/common/disp/fss.c index a409ebc800..e132ff3397 100644 --- a/usr/src/uts/common/disp/fss.c +++ b/usr/src/uts/common/disp/fss.c @@ -1799,6 +1799,13 @@ fss_exit(kthread_t *t) mutex_exit(&fsspset->fssps_lock); mutex_exit(&fsspsets_lock); + /* + * A thread could be exiting in between clock ticks, so we need to + * calculate how much CPU time it used since it was charged last time. + * + * CPU caps are not enforced on exiting processes - it is usually + * desirable to exit as soon as possible to free resources. + */ if (CPUCAPS_ON()) { thread_lock(t); fssproc = FSSPROC(t); @@ -1993,7 +2000,7 @@ fss_preempt(kthread_t *t) */ if (CPUCAPS_ON()) { (void) cpucaps_charge(t, &fssproc->fss_caps, - CPUCAPS_CHARGE_ONLY); + CPUCAPS_CHARGE_ENFORCE); if (!(fssproc->fss_flags & FSSKPRI) && CPUCAPS_ENFORCE(t)) return; @@ -2109,7 +2116,7 @@ fss_sleep(kthread_t *t) /* * Account for time spent on CPU before going to sleep. */ - (void) CPUCAPS_CHARGE(t, &fssproc->fss_caps, CPUCAPS_CHARGE_ONLY); + (void) CPUCAPS_CHARGE(t, &fssproc->fss_caps, CPUCAPS_CHARGE_ENFORCE); fss_inactive(t); @@ -2412,7 +2419,7 @@ fss_yield(kthread_t *t) /* * Collect CPU usage spent before yielding */ - (void) CPUCAPS_CHARGE(t, &fssproc->fss_caps, CPUCAPS_CHARGE_ONLY); + (void) CPUCAPS_CHARGE(t, &fssproc->fss_caps, CPUCAPS_CHARGE_ENFORCE); /* * Clear the preemption control "yield" bit since the user is |