Date: Sun, 15 Jan 2012 22:10:35 +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-9@freebsd.org Subject: svn commit: r230173 - stable/9/sys/kern Message-ID: <201201152210.q0FMAZDw002808@svn.freebsd.org>
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Author: avg Date: Sun Jan 15 22:10:35 2012 New Revision: 230173 URL: http://svn.freebsd.org/changeset/base/230173 Log: MFC r228718: ule: ensure that batch timeshare threads are scheduled fairly Modified: stable/9/sys/kern/sched_ule.c Directory Properties: stable/9/sys/ (props changed) stable/9/sys/amd64/include/xen/ (props changed) stable/9/sys/boot/ (props changed) stable/9/sys/boot/i386/efi/ (props changed) stable/9/sys/boot/ia64/efi/ (props changed) stable/9/sys/boot/ia64/ski/ (props changed) stable/9/sys/boot/powerpc/boot1.chrp/ (props changed) stable/9/sys/boot/powerpc/ofw/ (props changed) stable/9/sys/cddl/contrib/opensolaris/ (props changed) stable/9/sys/conf/ (props changed) stable/9/sys/contrib/dev/acpica/ (props changed) stable/9/sys/contrib/octeon-sdk/ (props changed) stable/9/sys/contrib/pf/ (props changed) stable/9/sys/contrib/x86emu/ (props changed) Modified: stable/9/sys/kern/sched_ule.c ============================================================================== --- stable/9/sys/kern/sched_ule.c Sun Jan 15 22:08:44 2012 (r230172) +++ stable/9/sys/kern/sched_ule.c Sun Jan 15 22:10:35 2012 (r230173) @@ -125,6 +125,7 @@ static struct td_sched td_sched0; */ #define PRI_TIMESHARE_RANGE (PRI_MAX_TIMESHARE - PRI_MIN_TIMESHARE + 1) #define PRI_INTERACT_RANGE ((PRI_TIMESHARE_RANGE - SCHED_PRI_NRESV) / 2) +#define PRI_BATCH_RANGE (PRI_TIMESHARE_RANGE - PRI_INTERACT_RANGE) #define PRI_MIN_INTERACT PRI_MIN_TIMESHARE #define PRI_MAX_INTERACT (PRI_MIN_TIMESHARE + PRI_INTERACT_RANGE - 1) @@ -416,7 +417,6 @@ 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 @@ -449,7 +449,7 @@ 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_BATCH_RANGE; pri = (pri + tdq->tdq_idx) % RQ_NQS; /* * This effectively shortens the queue by one so we
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