Author: jhb
Date: Thu Jan 27 20:12:35 2011
New Revision: 217977
URL: http://svn.freebsd.org/changeset/base/217977
Log:
MFC 217077:
Only change the priority of timeshare threads to PRI_MAX_TIMESHARE
when yield() is called. Specifically, leave the priority of real time
and idle threads unchanged.
Modified:
stable/7/sys/kern/kern_synch.c
Directory Properties:
stable/7/sys/ (props changed)
stable/7/sys/cddl/contrib/opensolaris/ (props changed)
stable/7/sys/contrib/dev/acpica/ (props changed)
stable/7/sys/contrib/pf/ (props changed)
stable/7/sys/dev/usb/ (props changed)
Modified: stable/7/sys/kern/kern_synch.c
==============================================================================
--- stable/7/sys/kern/kern_synch.c Thu Jan 27 20:12:18 2011
(r217976)
+++ stable/7/sys/kern/kern_synch.c Thu Jan 27 20:12:35 2011
(r217977)
@@ -552,7 +552,8 @@ yield(struct thread *td, struct yield_ar
{
thread_lock(td);
- sched_prio(td, PRI_MAX_TIMESHARE);
+ if (PRI_BASE(td->td_pri_class) == PRI_TIMESHARE)
+ sched_prio(td, PRI_MAX_TIMESHARE);
mi_switch(SW_VOL, NULL);
thread_unlock(td);
td->td_retval[0] = 0;
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