Date: Thu, 23 Aug 2012 21:32:03 +0000 (UTC) From: Navdeep Parhar <np@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r239624 - head/sys/kern Message-ID: <201208232132.q7NLW38a098252@svn.freebsd.org>
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Author: np Date: Thu Aug 23 21:32:02 2012 New Revision: 239624 URL: http://svn.freebsd.org/changeset/base/239624 Log: Allow nmbjumbop, nmbjumbo9, and nmbjumbo16 to be set directly via loader tunables. MFC after: 1 month Modified: head/sys/kern/kern_mbuf.c Modified: head/sys/kern/kern_mbuf.c ============================================================================== --- head/sys/kern/kern_mbuf.c Thu Aug 23 21:31:52 2012 (r239623) +++ head/sys/kern/kern_mbuf.c Thu Aug 23 21:32:02 2012 (r239624) @@ -110,14 +110,23 @@ struct mbstat mbstat; static void tunable_mbinit(void *dummy) { - TUNABLE_INT_FETCH("kern.ipc.nmbclusters", &nmbclusters); /* This has to be done before VM init. */ + TUNABLE_INT_FETCH("kern.ipc.nmbclusters", &nmbclusters); if (nmbclusters == 0) nmbclusters = 1024 + maxusers * 64; - nmbjumbop = nmbclusters / 2; - nmbjumbo9 = nmbjumbop / 2; - nmbjumbo16 = nmbjumbo9 / 2; + + TUNABLE_INT_FETCH("kern.ipc.nmbjumbop", &nmbjumbop); + if (nmbjumbop == 0) + nmbjumbop = nmbclusters / 2; + + TUNABLE_INT_FETCH("kern.ipc.nmbjumbo9", &nmbjumbo9); + if (nmbjumbo9 == 0) + nmbjumbo9 = nmbclusters / 4; + + TUNABLE_INT_FETCH("kern.ipc.nmbjumbo16", &nmbjumbo16); + if (nmbjumbo16 == 0) + nmbjumbo16 = nmbclusters / 8; } SYSINIT(tunable_mbinit, SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_mbinit, NULL);
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