cvs commit: src/sys/kern sched_ule.c

John Baldwin jhb at
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
>   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>  <><
"Power Users Use the Power to Serve"  =

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