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1e4d7da707
freebsd-skq/sys/netinet
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Robert Watson 1e4d7da707 Reduce the number of unnecessary unlock-relocks on socket buffer mutexes 
associated with performing a wakeup on the socket buffer:

- When performing an sbappend*() followed by a so[rw]wakeup(), explicitly
  acquire the socket buffer lock and use the _locked() variants of both
  calls.  Note that the _locked() sowakeup() versions unlock the mutex on
  return.  This is done in uipc_send(), divert_packet(), mroute
  socket_send(), raw_append(), tcp_reass(), tcp_input(), and udp_append().

- When the socket buffer lock is dropped before a sowakeup(), remove the
  explicit unlock and use the _locked() sowakeup() variant.  This is done
  in soisdisconnecting(), soisdisconnected() when setting the can't send/
  receive flags and dropping data, and in uipc_rcvd() which adjusting
  back-pressure on the sockets.

For UNIX domain sockets running mpsafe with a contention-intensive SMP
mysql benchmark, this results in a 1.6% query rate improvement due to
reduce mutex costs.
2004-06-26 19:10:39 +00:00
..
libalias Unbreak natd. 2004-04-02 17:57:57 +00:00
accf_data.c add missing #include <sys/module.h> 2004-05-30 20:27:19 +00:00
accf_http.c The socket field so_state is used to hold a variety of socket related 2004-06-14 18:16:22 +00:00
icmp6.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
icmp_var.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
if_atm.c replace explicit changes to rt_refcnt by RT_ADDREF and RT_REMREF 2003-11-08 23:36:32 +00:00
if_atm.h
if_ether.c Add a new driver to support IP over firewire. This driver is intended to 2004-06-13 10:54:36 +00:00
if_ether.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
igmp_var.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
igmp.c Lock down parallel router_info list for tracking multicast IGMP 2004-06-11 03:42:37 +00:00
igmp.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in_cksum.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in_gif.c Ensure that dst is bzeroed before calling rtalloc_ign(), to avoid possible 2004-06-18 02:04:07 +00:00
in_gif.h - fix typo in comment. 2003-10-07 17:46:18 +00:00
in_pcb.c o connect(2): if there is no a route to the destination 2004-06-16 10:02:36 +00:00
in_pcb.h When asserting non-Giant locks in the network stack, also assert 2004-06-24 02:01:48 +00:00
in_proto.c Commit pf version 3.5 and link additional files to the kernel build. 2004-06-16 23:24:02 +00:00
in_rmx.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
in_systm.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in_var.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in.h Prepare for pf 3.5 import: 2004-06-16 22:59:06 +00:00
ip6.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
ip_divert.c Reduce the number of unnecessary unlock-relocks on socket buffer mutexes 2004-06-26 19:10:39 +00:00
ip_divert.h Re-remove MT_TAGs. The problems with dummynet have been fixed now. 2004-02-25 19:55:29 +00:00
ip_dummynet.c When asserting non-Giant locks in the network stack, also assert 2004-06-24 02:01:48 +00:00
ip_dummynet.h Re-remove MT_TAGs. The problems with dummynet have been fixed now. 2004-02-25 19:55:29 +00:00
ip_ecn.c add ECN support in layer-3. 2003-10-29 15:07:04 +00:00
ip_ecn.h add ECN support in layer-3. 2003-10-29 15:07:04 +00:00
ip_encap.c Lock down IP-layer encapsulation library: 2004-03-10 02:48:50 +00:00
ip_encap.h
ip_fastfwd.c Provide the sysctl net.inet.ip.process_options to control the processing 2004-05-06 18:46:03 +00:00
ip_fw2.c When asserting non-Giant locks in the network stack, also assert 2004-06-24 02:01:48 +00:00
ip_fw.h Introduce a new feature to IPFW2: lookup tables. These are useful 2004-06-09 20:10:38 +00:00
ip_gre.c Lock down global variables in if_gre: 2004-03-22 16:04:43 +00:00
ip_gre.h
ip_icmp.c do not send icmp response if the original packet is encrypted. 2004-06-07 09:56:59 +00:00
ip_icmp.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
ip_id.c Tweak existing header and other build infrastructure to be able to build 2004-02-26 03:53:54 +00:00
ip_input.c Check that m->m_pkthdr.rcvif is not NULL before checking if a packet 2004-06-18 12:58:45 +00:00
ip_mroute.c Reduce the number of unnecessary unlock-relocks on socket buffer mutexes 2004-06-26 19:10:39 +00:00
ip_mroute.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
ip_output.c In ip_ctloutput(), acquire the inpcb lock around some of the basic 2004-06-24 02:05:47 +00:00
ip_var.h Provide the sysctl net.inet.ip.process_options to control the processing 2004-05-06 18:46:03 +00:00
ip.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
ipprotosw.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
pim_var.h New PIM header files. 2003-08-07 18:17:43 +00:00
pim.h Include <sys/types.h> for autoconf/automake detection. 2004-03-08 07:45:32 +00:00
raw_ip.c Reduce the number of unnecessary unlock-relocks on socket buffer mutexes 2004-06-26 19:10:39 +00:00
tcp_debug.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
tcp_debug.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
tcp_fsm.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
tcp_hostcache.c Fix a potential race when purging expired hostcache entries. 2004-04-23 13:54:28 +00:00
tcp_input.c Reduce the number of unnecessary unlock-relocks on socket buffer mutexes 2004-06-26 19:10:39 +00:00
tcp_output.c Add support for TCP Selective Acknowledgements. The work for this 2004-06-23 21:04:37 +00:00
tcp_reass.c Reduce the number of unnecessary unlock-relocks on socket buffer mutexes 2004-06-26 19:10:39 +00:00
tcp_sack.c Add support for TCP Selective Acknowledgements. The work for this 2004-06-23 21:04:37 +00:00
tcp_seq.h Add support for TCP Selective Acknowledgements. The work for this 2004-06-23 21:04:37 +00:00
tcp_subr.c Move the sack sysctl's under net.inet.tcp.sack 2004-06-23 21:34:07 +00:00
tcp_syncache.c Add support for TCP Selective Acknowledgements. The work for this 2004-06-23 21:04:37 +00:00
tcp_timer.c Add support for TCP Selective Acknowledgements. The work for this 2004-06-23 21:04:37 +00:00
tcp_timer.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
tcp_timewait.c Move the sack sysctl's under net.inet.tcp.sack 2004-06-23 21:34:07 +00:00
tcp_usrreq.c Remove spl's from TCP protocol entry points. While not all locking 2004-06-26 17:50:50 +00:00
tcp_var.h Whitespace. 2004-06-25 02:29:58 +00:00
tcp.h Add support for TCP Selective Acknowledgements. The work for this 2004-06-23 21:04:37 +00:00
tcpip.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
udp_usrreq.c Reduce the number of unnecessary unlock-relocks on socket buffer mutexes 2004-06-26 19:10:39 +00:00
udp_var.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
udp.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00