Date: Thu, 6 Jan 2011 22:19:15 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r217077 - head/sys/kern Message-ID: <201101062219.p06MJFUb030194@svn.freebsd.org>
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Author: jhb Date: Thu Jan 6 22:19:15 2011 New Revision: 217077 URL: http://svn.freebsd.org/changeset/base/217077 Log: 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. MFC after: 2 weeks Modified: head/sys/kern/kern_synch.c Modified: head/sys/kern/kern_synch.c ============================================================================== --- head/sys/kern/kern_synch.c Thu Jan 6 22:17:07 2011 (r217076) +++ head/sys/kern/kern_synch.c Thu Jan 6 22:19:15 2011 (r217077) @@ -546,7 +546,8 @@ 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 | SWT_RELINQUISH, NULL); thread_unlock(td); td->td_retval[0] = 0;
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