cvs commit: src/sys/kern sched_ule.c

[John Baldwin]

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
>   Log:
>    - 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