system/freebsd-src
system/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src synced 2024-10-18 22:33:39 +00:00
Code Issues Packages Projects Releases Wiki Activity

Temporarily disable preemption in SCHED_ULE due to reported panics and

Browse source 
hangs due to recent preemption changes.  This change appears to remove
the panic that I was running into, but at the cost of increasing
ithread scheduling latency, and as such is a temporary band-aid until
jhb has a chance to resolve the ule<->preemption interaction that is
the source of the problem.  If it doesn't fix the problem for others--
sorry!
This commit is contained in:
Robert Watson 2004-07-06 05:57:29 +00:00
parent 52702e98d2
commit df623e3c2f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=131678
1 changed files with 2 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
sys/kern/sched_ule.c
View file

@ -1623,6 +1623,7 @@ sched_add(struct thread *td)
if (td->td_priority < curthread->td_priority)
curthread->td_flags |= TDF_NEEDRESCHED;
#if 0
#ifdef SMP
/*
* Only try to preempt if the thread is unpinned or pinned to the
@ -1632,6 +1633,7 @@ sched_add(struct thread *td)
#endif
if (maybe_preempt(td))
return;
#endif
ke->ke_ksegrp->kg_runq_kses++;
ke->ke_state = KES_ONRUNQ;