Date: Tue, 14 Dec 2004 10:34:27 +0000 (UTC) From: Jeff Roberson <jeff@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern sched_ule.c Message-ID: <200412141034.iBEAYRPu029498@repoman.freebsd.org>
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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
Revision Changes Path
1.139 +25 -11 src/sys/kern/sched_ule.c
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