Date: Sun, 15 Jan 2012 22:47:50 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r230178 - stable/8/sys/kern Message-ID: <201201152247.q0FMloZ7004314@svn.freebsd.org>
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Author: avg Date: Sun Jan 15 22:47:49 2012 New Revision: 230178 URL: http://svn.freebsd.org/changeset/base/230178 Log: MFC r228718: ule: ensure that batch timeshare threads are scheduled fairly Second take. Modified: stable/8/sys/kern/sched_ule.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) Modified: stable/8/sys/kern/sched_ule.c ============================================================================== --- stable/8/sys/kern/sched_ule.c Sun Jan 15 22:43:34 2012 (r230177) +++ stable/8/sys/kern/sched_ule.c Sun Jan 15 22:47:49 2012 (r230178) @@ -413,7 +413,6 @@ sched_shouldpreempt(int pri, int cpri, i return (0); } -#define TS_RQ_PPQ (((PRI_MAX_BATCH - PRI_MIN_BATCH) + 1) / RQ_NQS) /* * Add a thread to the actual run-queue. Keeps transferable counts up to * date with what is actually on the run-queue. Selects the correct @@ -446,7 +445,8 @@ tdq_runq_add(struct tdq *tdq, struct thr * realtime. Use the whole queue to represent these values. */ if ((flags & (SRQ_BORROWING|SRQ_PREEMPTED)) == 0) { - pri = (pri - PRI_MIN_BATCH) / TS_RQ_PPQ; + pri = RQ_NQS * (pri - PRI_MIN_BATCH) / + (PRI_MAX_BATCH - PRI_MIN_BATCH + 1); pri = (pri + tdq->tdq_idx) % RQ_NQS; /* * This effectively shortens the queue by one so we
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