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freebsd-skq/sys/net
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Mark Johnston eeacb3b02f Merge the vm_page hold and wire mechanisms. 
The hold_count and wire_count fields of struct vm_page are separate
reference counters with similar semantics.  The remaining essential
differences are that holds are not counted as a reference with respect
to LRU, and holds have an implicit free-on-last unhold semantic whereas
vm_page_unwire() callers must explicitly determine whether to free the
page once the last reference to the page is released.

This change removes the KPIs which directly manipulate hold_count.
Functions such as vm_fault_quick_hold_pages() now return wired pages
instead.  Since r328977 the overhead of maintaining LRU for wired pages
is lower, and in many cases vm_fault_quick_hold_pages() callers would
swap holds for wirings on the returned pages anyway, so with this change
we remove a number of page lock acquisitions.

No functional change is intended.  __FreeBSD_version is bumped.

Reviewed by:	alc, kib
Discussed with:	jeff
Discussed with:	jhb, np (cxgbe)
Tested by:	pho (previous version)
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D19247
2019-07-08 19:46:20 +00:00
..
altq Reduce the time it takes the kernel to install a new PF config containing a large number of queues 2019-02-11 05:17:31 +00:00
bpf_buffer.c Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
bpf_buffer.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
bpf_filter.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
bpf_jitter.c Make UMA and malloc(9) return non-executable memory in most cases. 2018-06-13 17:04:41 +00:00
bpf_jitter.h Make UMA and malloc(9) return non-executable memory in most cases. 2018-06-13 17:04:41 +00:00
bpf_zerocopy.c Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
bpf_zerocopy.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
bpf.c Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
bpf.h Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
bpfdesc.h Rework locking in BPF code to remove rwlock from fast path. 2019-05-13 13:45:28 +00:00
bridgestp.c bridge: Fix panic if the STP root is removed 2019-03-15 11:21:20 +00:00
bridgestp.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
dlt.h Re-apply r190640. 2018-05-31 09:11:21 +00:00
ethernet.h Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
firewire.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
ieee8023ad_lacp.c Select lacp egress ports based on NUMA domain 2019-05-03 14:43:21 +00:00
ieee8023ad_lacp.h Select lacp egress ports based on NUMA domain 2019-05-03 14:43:21 +00:00
ieee_oui.h net: adjust randomized address bits 2019-04-17 17:18:43 +00:00
if_arp.h Improve ARP logging. 2019-03-09 01:12:59 +00:00
if_bridge.c if_bridge(4): Complete bpf auditing of local traffic over the bridge 2019-05-29 01:08:30 +00:00
if_bridgevar.h Allow different bridge types to coexist 2018-05-11 05:00:40 +00:00
if_clone.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
if_clone.h Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
if_dead.c sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_debug.c sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_disc.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
if_dl.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
if_edsc.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
if_enc.c New pfil(9) KPI together with newborn pfil API and control utility. 2019-01-31 23:01:03 +00:00
if_enc.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_epair.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
if_ethersubr.c Restructure mbuf send tags to provide stronger guarantees. 2019-05-24 22:30:40 +00:00
if_fwsubr.c Improve copy-and-pasted versions of SIOCGIFADDR. 2018-03-27 20:51:49 +00:00
if_gif.c Add handling for appearing/disappearing of ingress addresses to if_gif(4). 2018-10-21 18:06:15 +00:00
if_gif.h Add handling for appearing/disappearing of ingress addresses to if_gif(4). 2018-10-21 18:06:15 +00:00
if_gre.c Add GRE-in-UDP encapsulation support as defined in RFC8086. 2019-04-24 09:05:45 +00:00
if_gre.h Add GRE-in-UDP encapsulation support as defined in RFC8086. 2019-04-24 09:05:45 +00:00
if_ipsec.c Allow configuration of several ipsec interfaces with the same tunnel 2018-11-16 14:21:57 +00:00
if_ipsec.h
if_lagg.c Restore the comment removed in r348745. 2019-06-06 17:20:35 +00:00
if_lagg.h Select lacp egress ports based on NUMA domain 2019-05-03 14:43:21 +00:00
if_llatbl.c Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
if_llatbl.h Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
if_llc.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
if_loop.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
if_me.c Add the check that current VNET is ready and access to srchash is allowed. 2018-10-23 13:11:45 +00:00
if_media.c Finish removing FDDI and tokenring media support. 2018-04-23 21:10:33 +00:00
if_media.h if_media: Add new 2.5G/5G/25G/40G/50G/100G/200G/400G media types 2018-08-22 18:19:56 +00:00
if_mib.c
if_mib.h
if_pflog.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_pfsync.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_sppp.h
if_spppfr.c
if_spppsubr.c Replace read_random(9) with more appropriate arc4rand(9) KPIs 2019-04-04 01:02:50 +00:00
if_stf.c Do not perform DAD on stf(4) interfaces. 2019-03-30 18:00:44 +00:00
if_tap.h tun/tap: merge and rename to tuntap 2019-05-08 02:32:11 +00:00
if_tun.h
if_tuntap.c Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
if_types.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
if_var.h Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
if_vlan_var.h Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
if_vlan.c Support IFCAP_NOMAP in vlan(4). 2019-06-29 00:51:38 +00:00
if_vxlan.c Convert all IPv4 and IPv6 multicast memberships into using a STAILQ 2019-06-25 11:54:41 +00:00
if_vxlan.h Add support for IPv6 scoped addresses to vxlan 2017-12-30 04:03:53 +00:00
if.c Need to wait for epoch callbacks to complete before detaching a 2019-06-28 10:49:04 +00:00
if.h Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
ifdi_if.m iflib(9): Add support for cloning pseudo interfaces 2018-05-11 20:08:28 +00:00
iflib_clone.c - Remove the unused ifc_link_irq and ifc_mtx_name members of struct iflib_ctx. 2019-05-06 20:56:41 +00:00
iflib_private.h - Replace unused and only ever written to members of public iflib(9) 2019-06-15 11:07:41 +00:00
iflib.c o In iflib_txq_drain(): 2019-06-26 15:28:21 +00:00
iflib.h - Replace unused and only ever written to members of public iflib(9) 2019-06-15 11:07:41 +00:00
ifq.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
mp_ring.c - Merge r338254 from cxgbe(4): 2019-05-09 11:34:46 +00:00
mp_ring.h mp_ring: avoid items offset difference between iflib and mp_ring 2019-01-03 23:06:05 +00:00
mppc.h
mppcc.c
mppcd.c
netisr_internal.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
netisr.c Restructure mbuf send tags to provide stronger guarantees. 2019-05-24 22:30:40 +00:00
netisr.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
netmap_legacy.h netmap: add support for multiple host rings 2019-03-18 12:22:23 +00:00
netmap_user.h netmap: add support for multiple host rings 2019-03-18 12:22:23 +00:00
netmap_virt.h netmap: align codebase to the current upstream (760279cfb2730a585) 2018-12-05 11:57:16 +00:00
netmap.h netmap: add support for multiple host rings 2019-03-18 12:22:23 +00:00
paravirt.h
pfil.c Most Ethernet drivers that potentially can run a pfil(9) hook with 2019-03-10 17:20:09 +00:00
pfil.h Most Ethernet drivers that potentially can run a pfil(9) hook with 2019-03-10 17:20:09 +00:00
pfkeyv2.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
pfvar.h pf :Use counter(9) in pf tables. 2019-03-15 11:08:44 +00:00
ppp_defs.h
radix_mpath.c Switch RIB and RADIX_NODE_HEAD lock from rwlock(9) to rmlock(9). 2018-06-16 08:26:23 +00:00
radix_mpath.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
radix.c Switch RIB and RADIX_NODE_HEAD lock from rwlock(9) to rmlock(9). 2018-06-16 08:26:23 +00:00
radix.h Fix typo. 2018-06-16 19:21:09 +00:00
raw_cb.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
raw_cb.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
raw_usrreq.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
rndis.h
route_var.h Existense of PCB route caching doesn't allow us to use new fast route 2019-05-08 23:39:24 +00:00
route.c Fix gateway setup for the interface routes. 2019-05-22 21:20:15 +00:00
route.h Existense of PCB route caching doesn't allow us to use new fast route 2019-05-08 23:39:24 +00:00
rss_config.c
rss_config.h
rtsock.c When sending a routing message, don't allow the user to set the 2019-04-14 10:18:14 +00:00
sff8436.h
sff8472.h ifconfig(8): Display extended compliance code string for SFP transceivers 2017-12-05 18:42:07 +00:00
slcompress.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
slcompress.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
toeplitz.c
toeplitz.h
vnet.c With more excessive use of modules, more kernel parts working with 2018-10-30 20:45:15 +00:00
vnet.h [PowerPC64] Don't mark module data as static 2019-06-25 17:15:44 +00:00