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Complete r243631 by applying the remainder of kern_mbuf.c that got

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lost while merging into the commit tree.

MFC after:	1 month
X-MFC-with:	r243631
This commit is contained in:
Andre Oppermann 2012-11-27 23:16:56 +00:00
parent 358c7f47da
commit 416a434cd0
1 changed files with 18 additions and 16 deletions
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34
sys/kern/kern_mbuf.c
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@ -107,36 +107,38 @@ struct mbstat mbstat;
* tunable_mbinit() has to be run before init_maxsockets() thus
* the SYSINIT order below is SI_ORDER_MIDDLE while init_maxsockets()
* runs at SI_ORDER_ANY.
*
* NB: This has to be done before VM init.
*/
static void
tunable_mbinit(void *dummy)
{
/* This has to be done before VM init. */
TUNABLE_INT_FETCH("kern.ipc.nmbclusters", &nmbclusters);
if (nmbclusters == 0) {
#ifdef VM_AUTOTUNE_NMBCLUSTERS
nmbclusters = VM_AUTOTUNE_NMBCLUSTERS;
#else
nmbclusters = 1024 + maxusers * 64;
#endif
#ifdef VM_MAX_AUTOTUNE_NMBCLUSTERS
if (nmbclusters > VM_MAX_AUTOTUNE_NMBCLUSTERS)
nmbclusters = VM_MAX_AUTOTUNE_NMBCLUSTERS;
#endif
}
if (nmbclusters == 0)
nmbclusters = maxmbufmem / MCLBYTES / 4;
TUNABLE_INT_FETCH("kern.ipc.nmbjumbop", &nmbjumbop);
if (nmbjumbop == 0)
nmbjumbop = nmbclusters / 2;
nmbjumbop = maxmbufmem / MJUMPAGESIZE / 4;
TUNABLE_INT_FETCH("kern.ipc.nmbjumbo9", &nmbjumbo9);
if (nmbjumbo9 == 0)
nmbjumbo9 = nmbclusters / 4;
nmbjumbo9 = maxmbufmem / MJUM9BYTES / 6;
TUNABLE_INT_FETCH("kern.ipc.nmbjumbo16", &nmbjumbo16);
if (nmbjumbo16 == 0)
nmbjumbo16 = nmbclusters / 8;
nmbjumbo16 = maxmbufmem / MJUM16BYTES / 6;
/*
* We need at least as many mbufs as we have clusters of
* the various types added together.
*/
TUNABLE_INT_FETCH("kern.ipc.nmbufs", &nmbufs);
if (nmbufs < nmbclusters + nmbjumbop + nmbjumbo9 + nmbjumbo16)
nmbufs = lmax(maxmbufmem / MSIZE / 5,
nmbclusters + nmbjumbop + nmbjumbo9 + nmbjumbo16);
}
SYSINIT(tunable_mbinit, SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_mbinit, NULL);
@ -241,7 +243,7 @@ sysctl_nmbufs(SYSCTL_HANDLER_ARGS)
if (newnmbufs > nmbufs) {
nmbufs = newnmbufs;
uma_zone_set_max(zone_mbuf, nmbufs);
nmbclusters = uma_zone_get_max(zone_mbuf);
nmbufs = uma_zone_get_max(zone_mbuf);
EVENTHANDLER_INVOKE(nmbufs_change);
} else
error = EINVAL;