cvs commit: src/sys/kern sched_ule.c
jhb at FreeBSD.org
Tue Dec 14 10:30:37 PST 2004
On Tuesday 14 December 2004 05:34 am, Jeff Roberson wrote:
> jeff 2004-12-14 10:34:27 UTC
> FreeBSD src repository
> Modified files:
> sys/kern sched_ule.c
> - In kseq_choose(), don't recalculate slice values for processes with a
> nice of 0. Doing so can cause an infinite loop because they should be
> running, but a nice -20 process could prevent them from doing so.
> - Add a new flag KEF_PRIOELEV to flag a thread that has had its priority
> elevated due to priority propagation. If a thread has had its
> priority elevated, we assume that it must go on the current queue and it
> must get a slice.
> - In sched_userret() if our priority was elevated and we shouldn't have
> a timeslice, yield here until we should.
> Found/Tested by: glebius
_Please_ look at my priority inversions patch that I sent you a month ago! I
already have a flag for noting that a thread has bumped its priority and
would appreciate it if you would review this before making more conflicts.
John Baldwin <jhb at FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve" = http://www.FreeBSD.org
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