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- In SCHED_CURR() add holding Giant to the list of criteria that will keep

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you on the current queue.  In the future, it would be nice if priority
   propagation could deterministicly pluck a thread off of the next queue
   and put it on the current queue.  Until then this hack stops us from
   holding up our entire current queue, including interrupt handlers, while
   a thread on the next queue is blocked while holding Giant.
 - Inherit our pctcpu information from our parent.
This commit is contained in:
Jeff Roberson 2003-10-12 21:07:31 +00:00
parent 8f21478b6a
commit 736c97c7b3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=121051
1 changed files with 7 additions and 8 deletions
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15
sys/kern/sched_ule.c
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@ -182,7 +182,9 @@ struct td_sched *thread0_sched = &td_sched;
#define SCHED_INTERACTIVE(kg) \
(sched_interact_score(kg) < SCHED_INTERACT_THRESH)
#define SCHED_CURR(kg, ke) \
(ke->ke_thread->td_priority < PRI_MIN_TIMESHARE || SCHED_INTERACTIVE(kg))
(ke->ke_thread->td_priority < PRI_MIN_TIMESHARE || \
SCHED_INTERACTIVE(kg) || \
mtx_ownedby(&Giant, (ke)->ke_thread))
/*
* Cpu percentage computation macros and defines.
@ -925,13 +927,10 @@ sched_fork_kse(struct kse *ke, struct kse *child)
child->ke_cpu = ke->ke_cpu; /* sched_pickcpu(); */
child->ke_runq = NULL;
/*
* Claim that we've been running for one second for statistical
* purposes.
*/
child->ke_ticks = 0;
child->ke_ltick = ticks;
child->ke_ftick = ticks - hz;
/* Grab our parents cpu estimation information. */
child->ke_ticks = ke->ke_ticks;
child->ke_ltick = ke->ke_ltick;
child->ke_ftick = ke->ke_ftick;
}
void