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2013-12-19Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next Steffen Klassert says: ==================== pull request (net-next): ipsec-next 2013-12-19 1) Use the user supplied policy index instead of a generated one if present. From Fan Du. 2) Make xfrm migration namespace aware. From Fan Du. 3) Make the xfrm state and policy locks namespace aware. From Fan Du. 4) Remove ancient sleeping when the SA is in acquire state, we now queue packets to the policy instead. This replaces the sleeping code. 5) Remove FLOWI_FLAG_CAN_SLEEP. This was used to notify xfrm about the posibility to sleep. The sleeping code is gone, so remove it. 6) Check user specified spi for IPComp. Thr spi for IPcomp is only 16 bit wide, so check for a valid value. From Fan Du. 7) Export verify_userspi_info to check for valid user supplied spi ranges with pfkey and netlink. From Fan Du. 8) RFC3173 states that if the total size of a compressed payload and the IPComp header is not smaller than the size of the original payload, the IP datagram must be sent in the original non-compressed form. These packets are dropped by the inbound policy check because they are not transformed. Document the need to set 'level use' for IPcomp to receive such packets anyway. From Fan Du. Please pull or let me know if there are problems. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-19Merge branch 'for-davem' of git://gitorious.org/linux-can/linux-can-nextDavid S. Miller
Marc Kleine-Budde says: ==================== this is a pull request of four patches for net-next/master. There is one patch by Markus Pargmann, which speeds up the c_can driver, a patch by John Whitmore which updates the in tree documentation. A patch by Jeff Kirsher which replaces the FSF's address by a link and a patch by Alexander Shiyan which converts the mcp251x driver to make use of managed resources. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-18ipv4: new ip_no_pmtu_disc mode to always discard incoming frag needed msgsHannes Frederic Sowa
This new mode discards all incoming fragmentation-needed notifications as I guess was originally intended with this knob. To not break backward compatibility too much, I only added a special case for mode 2 in the receiving path. Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflicts: drivers/net/ethernet/intel/i40e/i40e_main.c drivers/net/macvtap.c Both minor merge hassles, simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-17ipv4: improve documentation of ip_no_pmtu_discHannes Frederic Sowa
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-17can: update MAINTAINERS and DocumentationJohn Whitmore
Changed MAINTAINERS file to add Documentation/networking/can.txt to the list of maintained files. can.txt: - Globally changed Socket CAN to SocketCAN - Removed section 3.3 from the document - Updated Section 7 - Corrected a few simple typos Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: John Whitmore <johnfwhitmore@gmail.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2013-12-16xfrm: Add file to document IPsec corner caseFan Du
Create Documentation/networking/ipsec.txt to document IPsec corner issues and other info, which will be useful when user deploying IPsec. Signed-off-by: Fan Du <fan.du@windriver.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2013-12-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Revert CHECKSUM_COMPLETE optimization in pskb_trim_rcsum(), I can't figure out why it breaks things. 2) Fix comparison in netfilter ipset's hash_netnet4_data_equal(), it was basically doing "x == x", from Dave Jones. 3) Freescale FEC driver was DMA mapping the wrong number of bytes, from Sebastian Siewior. 4) Blackhole and prohibit routes in ipv6 were not doing the right thing because their ->input and ->output methods were not being assigned correctly. Now they behave properly like their ipv4 counterparts. From Kamala R. 5) Several drivers advertise the NETIF_F_FRAGLIST capability, but really do not support this feature and will send garbage packets if fed fraglist SKBs. From Eric Dumazet. 6) Fix long standing user triggerable BUG_ON over loopback in RDS protocol stack, from Venkat Venkatsubra. 7) Several not so common code paths can potentially try to invoke packet scheduler actions that might be NULL without checking. Shore things up by either 1) defining a method as mandatory and erroring on registration if that method is NULL 2) defininig a method as optional and the registration function hooks up a default implementation when NULL is seen. From Jamal Hadi Salim. 8) Fix fragment detection in xen-natback driver, from Paul Durrant. 9) Kill dangling enter_memory_pressure method in cg_proto ops, from Eric W Biederman. 10) SKBs that traverse namespaces should have their local_df cleared, from Hannes Frederic Sowa. 11) IOCB file position is not being updated by macvtap_aio_read() and tun_chr_aio_read(). From Zhi Yong Wu. 12) Don't free virtio_net netdev before releasing all of the NAPI instances. From Andrey Vagin. 13) Procfs entry leak in xt_hashlimit, from Sergey Popovich. 14) IPv6 routes that are no cached routes should not count against the garbage collection limits. We had this almost right, but were missing handling addrconf generated routes properly. From Hannes Frederic Sowa. 15) fib{4,6}_rule_suppress() have to consider potentially seeing NULL route info when they are called, from Stefan Tomanek. 16) TUN and MACVTAP have had truncated packet signalling for some time, fix from Jason Wang. 17) Fix use after frrr in __udp4_lib_rcv(), from Eric Dumazet. 18) xen-netback does not interpret the NAPI budget properly for TX work, fix from Paul Durrant. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (132 commits) igb: Fix for issue where values could be too high for udelay function. i40e: fix null dereference xen-netback: fix gso_prefix check net: make neigh_priv_len in struct net_device 16bit instead of 8bit drivers: net: cpsw: fix for cpsw crash when build as modules xen-netback: napi: don't prematurely request a tx event xen-netback: napi: fix abuse of budget sch_tbf: use do_div() for 64-bit divide udp: ipv4: must add synchronization in udp_sk_rx_dst_set() net:fec: remove duplicate lines in comment about errata ERR006358 Revert "8390 : Replace ei_debug with msg_enable/NETIF_MSG_* feature" 8390 : Replace ei_debug with msg_enable/NETIF_MSG_* feature xen-netback: make sure skb linear area covers checksum field net: smc91x: Fix device tree based configuration so it's usable udp: ipv4: fix potential use after free in udp_v4_early_demux() macvtap: signal truncated packets tun: unbreak truncated packet signalling net: sched: htb: fix the calculation of quantum net: sched: tbf: fix the calculation of max_size micrel: add support for KSZ8041RNLI ...
2013-12-13Merge tag 'dm-3.13-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fixes from Mike Snitzer: "A set of device-mapper fixes for 3.13. A fix for possible memory corruption during DM table load, fix a possible leak of snapshot space in case of a crash, fix a possible deadlock due to a shared workqueue in the delay target, fix to initialize read-only module parameters that are used to export metrics for dm stats and dm bufio. Quite a few stable fixes were identified for both the thin- provisioning and caching targets as a result of increased regression testing using the device-mapper-test-suite (dmts). The most notable of these are the reference counting fixes for the space map btree that is used by the dm-array interface -- without these the dm-cache metadata will leak, resulting in dm-cache devices running out of metadata blocks. Also, some important fixes related to the thin-provisioning target's transition to read-only mode on error" * tag 'dm-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm array: fix a reference counting bug in shadow_ablock dm space map: disallow decrementing a reference count below zero dm stats: initialize read-only module parameter dm bufio: initialize read-only module parameters dm cache: actually resize cache dm cache: update Documentation for invalidate_cblocks's range syntax dm cache policy mq: fix promotions to occur as expected dm thin: allow pool in read-only mode to transition to read-write mode dm thin: re-establish read-only state when switching to fail mode dm thin: always fallback the pool mode if commit fails dm thin: switch to read-only mode if metadata space is exhausted dm thin: switch to read only mode if a mapping insert fails dm space map metadata: return on failure in sm_metadata_new_block dm table: fail dm_table_create on dm_round_up overflow dm snapshot: avoid snapshot space leak on crash dm delay: fix a possible deadlock due to shared workqueue
2013-12-12Merge branch 'v4l_for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media fixes from Mauro Carvalho Chehab: "A dvb core deadlock fix, a couple videobuf2 fixes an a series of media driver fixes" * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (30 commits) [media] videobuf2-dma-sg: fix possible memory leak [media] vb2: regression fix: always set length field. [media] mt9p031: Include linux/of.h header [media] rtl2830: add parent for I2C adapter [media] media: marvell-ccic: use devm to release clk [media] ths7303: Declare as static a private function [media] em28xx-video: Swap release order to avoid lock nesting [media] usbtv: Add support for PAL video source [media] media_tree: Fix spelling errors [media] videobuf2: Add support for file access mode flags for DMABUF exporting [media] radio-shark2: Mark shark_resume_leds() inline to kill compiler warning [media] radio-shark: Mark shark_resume_leds() inline to kill compiler warning [media] af9035: unlock on error in af9035_i2c_master_xfer() [media] af9033: fix broken I2C [media] v4l: omap3isp: Don't check for missing get_fmt op on remote subdev [media] af9035: fix broken I2C and USB I/O [media] wm8775: fix broken audio routing [media] marvell-ccic: drop resource free in driver remove [media] tef6862/radio-tea5764: actually assign clamp result [media] cx231xx: use after free on error path in probe ...
2013-12-12Merge tag 'keys-devel-20131210' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs Pull misc keyrings fixes from David Howells: "These break down into five sets: - A patch to error handling in the big_key type for huge payloads. If the payload is larger than the "low limit" and the backing store allocation fails, then big_key_instantiate() doesn't clear the payload pointers in the key, assuming them to have been previously cleared - but only one of them is. Unfortunately, the garbage collector still calls big_key_destroy() when sees one of the pointers with a weird value in it (and not NULL) which it then tries to clean up. - Three patches to fix the keyring type: * A patch to fix the hash function to correctly divide keyrings off from keys in the topology of the tree inside the associative array. This is only a problem if searching through nested keyrings - and only if the hash function incorrectly puts the a keyring outside of the 0 branch of the root node. * A patch to fix keyrings' use of the associative array. The __key_link_begin() function initially passes a NULL key pointer to assoc_array_insert() on the basis that it's holding a place in the tree whilst it does more allocation and stuff. This is only a problem when a node contains 16 keys that match at that level and we want to add an also matching 17th. This should easily be manufactured with a keyring full of keyrings (without chucking any other sort of key into the mix) - except for (a) above which makes it on average adding the 65th keyring. * A patch to fix searching down through nested keyrings, where any keyring in the set has more than 16 keyrings and none of the first keyrings we look through has a match (before the tree iteration needs to step to a more distal node). Test in keyutils test suite: http://git.kernel.org/cgit/linux/kernel/git/dhowells/keyutils.git/commit/?id=8b4ae963ed92523aea18dfbb8cab3f4979e13bd1 - A patch to fix the big_key type's use of a shmem file as its backing store causing audit messages and LSM check failures. This is done by setting S_PRIVATE on the file to avoid LSM checks on the file (access to the shmem file goes through the keyctl() interface and so is gated by the LSM that way). This isn't normally a problem if a key is used by the context that generated it - and it's currently only used by libkrb5. Test in keyutils test suite: http://git.kernel.org/cgit/linux/kernel/git/dhowells/keyutils.git/commit/?id=d9a53cbab42c293962f2f78f7190253fc73bd32e - A patch to add a generated file to .gitignore. - A patch to fix the alignment of the system certificate data such that it it works on s390. As I understand it, on the S390 arch, symbols must be 2-byte aligned because loading the address discards the least-significant bit" * tag 'keys-devel-20131210' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: KEYS: correct alignment of system_certificate_list content in assembly file Ignore generated file kernel/x509_certificate_list security: shmem: implement kernel private shmem inodes KEYS: Fix searching of nested keyrings KEYS: Fix multiple key add into associative array KEYS: Fix the keyring hash function KEYS: Pre-clear struct key on allocation
2013-12-11filter: doc: improve BPF documentationDaniel Borkmann
This patch significantly updates the BPF documentation and describes its internal architecture, Linux extensions, and handling of the kernel's BPF and JIT engine, plus documents how development can be facilitated with the help of bpf_dbg, bpf_asm, bpf_jit_disasm. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-11net: smc91x: Fix device tree based configuration so it's usableTony Lindgren
Commit 89ce376c6bdc (drivers/net: Use of_match_ptr() macro in smc91x.c) added minimal device tree support to smc91x, but it's not working on many platforms because of the lack of some key configuration bits. Fix the issue by parsing the necessary configuration like the smc911x driver is doing. As most smc91x users seem to use 16-bit access, let's default to that if no reg-io-width is specified. Cc: Nicolas Pitre <nico@fluxnic.net> Cc: Mark Rutland <mark.rutland@arm.com> Cc: netdev@vger.kernel.org Cc: devicetree@vger.kernel.org Acked-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-10dm cache: update Documentation for invalidate_cblocks's range syntaxMike Snitzer
The cache target's invalidate_cblocks message allows cache block (cblock) ranges to be expressed with: <cblock start>-<cblock end> The range's <cblock end> value is "one past the end", so the range includes <cblock start> through <cblock end>-1. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Acked-by: Joe Thornber <ejt@redhat.com>
2013-12-09net: phy: consolidate PHY reset in phy_init_hw()Florian Fainelli
There are quite a lot of drivers touching a PHY device MII_BMCR register to reset the PHY without taking care of: 1) ensuring that BMCR_RESET is cleared after a given timeout 2) the PHY state machine resuming to the proper state and re-applying potentially changed settings such as auto-negotiation Introduce phy_poll_reset() which will take care of polling the MII_BMCR for the BMCR_RESET bit to be cleared after a given timeout or return a timeout error code. In order to make sure the PHY is in a correct state, phy_init_hw() first issues a software reset through MII_BMCR and then applies any fixups. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-09packet: introduce PACKET_QDISC_BYPASS socket optionDaniel Borkmann
This patch introduces a PACKET_QDISC_BYPASS socket option, that allows for using a similar xmit() function as in pktgen instead of taking the dev_queue_xmit() path. This can be very useful when PF_PACKET applications are required to be used in a similar scenario as pktgen, but with full, flexible packet payload that needs to be provided, for example. On default, nothing changes in behaviour for normal PF_PACKET TX users, so everything stays as is for applications. New users, however, can now set PACKET_QDISC_BYPASS if needed to prevent own packets from i) reentering packet_rcv() and ii) to directly push the frame to the driver. In doing so we can increase pps (here 64 byte packets) for PF_PACKET a bit: # CPUs -- QDISC_BYPASS -- qdisc path -- qdisc path[**] 1 CPU == 1,509,628 pps -- 1,208,708 -- 1,247,436 2 CPUs == 3,198,659 pps -- 2,536,012 -- 1,605,779 3 CPUs == 4,787,992 pps -- 3,788,740 -- 1,735,610 4 CPUs == 6,173,956 pps -- 4,907,799 -- 1,909,114 5 CPUs == 7,495,676 pps -- 5,956,499 -- 2,014,422 6 CPUs == 9,001,496 pps -- 7,145,064 -- 2,155,261 7 CPUs == 10,229,776 pps -- 8,190,596 -- 2,220,619 8 CPUs == 11,040,732 pps -- 9,188,544 -- 2,241,879 9 CPUs == 12,009,076 pps -- 10,275,936 -- 2,068,447 10 CPUs == 11,380,052 pps -- 11,265,337 -- 1,578,689 11 CPUs == 11,672,676 pps -- 11,845,344 -- 1,297,412 [...] 20 CPUs == 11,363,192 pps -- 11,014,933 -- 1,245,081 [**]: qdisc path with packet_rcv(), how probably most people seem to use it (hopefully not anymore if not needed) The test was done using a modified trafgen, sending a simple static 64 bytes packet, on all CPUs. The trick in the fast "qdisc path" case, is to avoid reentering packet_rcv() by setting the RAW socket protocol to zero, like: socket(PF_PACKET, SOCK_RAW, 0); Tradeoffs are documented as well in this patch, clearly, if queues are busy, we will drop more packets, tc disciplines are ignored, and these packets are not visible to taps anymore. For a pktgen like scenario, we argue that this is acceptable. The pointer to the xmit function has been placed in packet socket structure hole between cached_dev and prot_hook that is hot anyway as we're working on cached_dev in each send path. Done in joint work together with Jesper Dangaard Brouer. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Merge 'net' into 'net-next' to get the AF_PACKET bug fix that Daniel's direct transmit changes depend upon. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-09packet: fix send path when running with proto == 0Daniel Borkmann
Commit e40526cb20b5 introduced a cached dev pointer, that gets hooked into register_prot_hook(), __unregister_prot_hook() to update the device used for the send path. We need to fix this up, as otherwise this will not work with sockets created with protocol = 0, plus with sll_protocol = 0 passed via sockaddr_ll when doing the bind. So instead, assign the pointer directly. The compiler can inline these helper functions automagically. While at it, also assume the cached dev fast-path as likely(), and document this variant of socket creation as it seems it is not widely used (seems not even the author of TX_RING was aware of that in his reference example [1]). Tested with reproducer from e40526cb20b5. [1] http://wiki.ipxwarzone.com/index.php5?title=Linux_packet_mmap#Example Fixes: e40526cb20b5 ("packet: fix use after free race in send path when dev is released") Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Tested-by: Salam Noureddine <noureddine@aristanetworks.com> Tested-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-09[media] videobuf2: Add support for file access mode flags for DMABUF exportingPhilipp Zabel
Currently it is not possible for userspace to map a DMABUF exported buffer with write permissions. This patch allows to also pass O_RDONLY/O_RDWR when exporting the buffer, so that userspace may map it with write permissions. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-12-08Merge tag 'char-misc-3.13-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver fixes from Greg KH: "Nothing huge, just a few small bugfixes for problems reported, and a device id update" * tag 'char-misc-3.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: mei: add 9 series PCH mei device ids drivers/char/i8k.c: add Dell XPLS L421X MAINTAINERS: add HSI subsystem misc: mic: Suppress memory space sparse warnings misc: mic: Fix endianness issues. misc: mic: Fix user space namespace pollution from mic_common.h. misc: mic: Bug fix for sysfs poll usage. misc: mic: Minor bug fix in 'retry' loops. misc: mic: Change mic_notify(...) to return true. extcon: remove freed groups caused the panic or warning in unregister flow extcon: arizona: Get pdata from arizona structure not device
2013-12-06ether_addr_equal: Optimize implementation, remove unused compare_ether_addrJoe Perches
Add a new check for CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS to reduce the number of or's used in the ether_addr_equal comparison to very slightly improve function performance. Simplify the ether_addr_equal_64bits implementation. Integrate and remove the zap_last_2bytes helper as it's now used only once. Remove the now unused compare_ether_addr function. Update the unaligned-memory-access documentation to remove the compare_ether_addr description and show how unaligned accesses could occur with ether_addr_equal. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-06Documentation: update Ethernet PHY devices binding with 'max-speed'Florian Fainelli
The 'max-speed' property is optional but defined in the ePAPR specification and now supported by the Linux Device Tree parsing infrastructure. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-06Merge branch 'for-davem' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next John W. Linville says: ==================== Please pull this batch of updates intended for the 3.14 stream... For the mac80211 bits, Johannes says: "I have various improvements/cleanups/fixes all over, but the shortlog shows that Luis's regulatory work and mesh work from the cozybit folks are the biggest ones, along with the CSA fixes." Along with that, we have big batches of updates to brcmfmac, rtlwifi, and ath9k. There are updates to wcn36xx, rt2x00, and a handful of others as well. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-06tcp: auto corkingEric Dumazet
With the introduction of TCP Small Queues, TSO auto sizing, and TCP pacing, we can implement Automatic Corking in the kernel, to help applications doing small write()/sendmsg() to TCP sockets. Idea is to change tcp_push() to check if the current skb payload is under skb optimal size (a multiple of MSS bytes) If under 'size_goal', and at least one packet is still in Qdisc or NIC TX queues, set the TCP Small Queue Throttled bit, so that the push will be delayed up to TX completion time. This delay might allow the application to coalesce more bytes in the skb in following write()/sendmsg()/sendfile() system calls. The exact duration of the delay is depending on the dynamics of the system, and might be zero if no packet for this flow is actually held in Qdisc or NIC TX ring. Using FQ/pacing is a way to increase the probability of autocorking being triggered. Add a new sysctl (/proc/sys/net/ipv4/tcp_autocorking) to control this feature and default it to 1 (enabled) Add a new SNMP counter : nstat -a | grep TcpExtTCPAutoCorking This counter is incremented every time we detected skb was under used and its flush was deferred. Tested: Interesting effects when using line buffered commands under ssh. Excellent performance results in term of cpu usage and total throughput. lpq83:~# echo 1 >/proc/sys/net/ipv4/tcp_autocorking lpq83:~# perf stat ./super_netperf 4 -t TCP_STREAM -H lpq84 -- -m 128 9410.39 Performance counter stats for './super_netperf 4 -t TCP_STREAM -H lpq84 -- -m 128': 35209.439626 task-clock # 2.901 CPUs utilized 2,294 context-switches # 0.065 K/sec 101 CPU-migrations # 0.003 K/sec 4,079 page-faults # 0.116 K/sec 97,923,241,298 cycles # 2.781 GHz [83.31%] 51,832,908,236 stalled-cycles-frontend # 52.93% frontend cycles idle [83.30%] 25,697,986,603 stalled-cycles-backend # 26.24% backend cycles idle [66.70%] 102,225,978,536 instructions # 1.04 insns per cycle # 0.51 stalled cycles per insn [83.38%] 18,657,696,819 branches # 529.906 M/sec [83.29%] 91,679,646 branch-misses # 0.49% of all branches [83.40%] 12.136204899 seconds time elapsed lpq83:~# echo 0 >/proc/sys/net/ipv4/tcp_autocorking lpq83:~# perf stat ./super_netperf 4 -t TCP_STREAM -H lpq84 -- -m 128 6624.89 Performance counter stats for './super_netperf 4 -t TCP_STREAM -H lpq84 -- -m 128': 40045.864494 task-clock # 3.301 CPUs utilized 171 context-switches # 0.004 K/sec 53 CPU-migrations # 0.001 K/sec 4,080 page-faults # 0.102 K/sec 111,340,458,645 cycles # 2.780 GHz [83.34%] 61,778,039,277 stalled-cycles-frontend # 55.49% frontend cycles idle [83.31%] 29,295,522,759 stalled-cycles-backend # 26.31% backend cycles idle [66.67%] 108,654,349,355 instructions # 0.98 insns per cycle # 0.57 stalled cycles per insn [83.34%] 19,552,170,748 branches # 488.244 M/sec [83.34%] 157,875,417 branch-misses # 0.81% of all branches [83.34%] 12.130267788 seconds time elapsed Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-06Merge tag 'dt-fixes-for-3.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree fixes from Rob Herring: - Various DT binding documentation updates - Add Kumar Gala and remove Stephen Warren as DT binding maintainers * tag 'dt-fixes-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: dt: binding: reword PowerPC 8xxx GPIO documentation ARM: tegra: delete nvidia,tegra20-spi.txt binding hwmon: ntc_thermistor: Fix typo (pullup-uV -> pullup-uv) of: add vendor prefix for GMT clk: exynos: Fix typos in DT bindings documentation of: Add vendor prefix for LG Corporation Documentation: net: fsl-fec.txt: Add phy-supply entry ARM: dts: doc: Document missing binding for omap5-mpu dt-bindings: add ARMv8 PMU binding MAINTAINERS: remove swarren from DT bindings MAINTAINERS: Add Kumar to Device Tree Binding maintainers group
2013-12-06Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
2013-12-05net: davinci_emac: Fix platform data handling and make usable for am3517Tony Lindgren
When booted with device tree, we may still have platform data passed as auxdata. For am3517 this is needed for passing the interrupt_enable and interrupt_disable callbacks that access the omap system control module registers. These callback functions will eventually go away when we have a separate system control module driver. Some of the things that are currently passed as platform data we don't need to set up as device tree properties as they are always the same on am3517. So let's use a new compatible flag for those so we can get those from the device tree match data. Also note that we need to fix setting of phy_dev to NULL instead of an empty string as the code later on uses that to find the first phy on the mdio bus. This seems to have been caused by 5d69e0076a72 (net: davinci_emac: switch to new mdio). Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-05Merge branch 'siocghwtstamp' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/bwh/sfc-next Ben Hutchings says: ==================== SIOCGHWTSTAMP ioctl 1. Add the SIOCGHWTSTAMP ioctl and update the timestamping documentation. 2. Implement SIOCGHWTSTAMP in most drivers that support SIOCSHWTSTAMP. 3. Add a test program to exercise SIOC{G,S}HWTSTAMP. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-04Merge tag 'gpio-v3.13-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO fixes from Linus Walleij: "Here are a few more GPIO patches, we're a bit noisy for being the GPIO subsystem, mostly due to the new descriptor API, but all is getting into shape. - Fix compile warnings - Fix overly talkative diagnostic messages from usual use cases wrt GPIO descriptors - Add a documentation 00-INDEX - Use platform GPIOs as fallback when ACPI or device tree is used as the primary means to get GPIO lines - A bug fix for the MPC8572/MPC8536 fixing erroneous input data" * tag 'gpio-v3.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpiolib: change a warning to debug message when failing to get gpio powerpc/gpio: Fix the wrong GPIO input data on MPC8572/MPC8536 gpiolib: use platform GPIO mappings as fallback Documentation: gpiolib: add 00-INDEX file gpiolib: fix lookup of platform-mapped GPIOs gpiolib: add missing declarations
2013-12-04Merge tag 'fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "Another batch of fixes for ARM SoCs for 3.13. The diffstat is large, mostly because of: - Another set of fixes to fix regressions caused by moving OMAP from board files to DT. Tony thinks this was the last major set of fixes, with maybe just a few small patches to follow. - More fixes for Marvell platforms, most dealing with misdescribed PCIe hardware, i.e. incorrect number of busses on some SoCs, etc. The line delta adds up due to various ranges moving around when this is fixed. But there's also: - Some smaller tweaks to defconfigs to make more boards bootable in my test setup for better coverage. - There are also a few other smaller fixes, a short series for at91, a couple of reverts for ux500, etc" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (39 commits) arm: dts: socfpga: Change some clocks of gate-clk type to perip-clk arm: socfpga: Enable ARM_TWD for socfpga ARM: multi_v7_defconfig: enable SDHCI_BCM_KONA and MMC_BLOCK_MINORS=16 ARM: sunxi_defconfig: enable NFS, TMPFS, PRINTK_TIME and nfsroot support ARM: multi_v7_defconfig: enable network for BeagleBone Black ARM: dts: Fix the name of supplies for smsc911x shared by OMAP ARM: OMAP2+: Powerdomain: Fix unchecked dereference of arch_pwrdm ARM: dts: omap3-beagle: Add omap-twl4030 audio support ARM: dts: omap4-sdp: Fix pin muxing for wl12xx ARM: dts: omap4-panda-common: Fix pin muxing for wl12xx ARM: at91: fixed unresolved symbol "at91_pm_set_standby" when built without CONFIG_PM ARM: at91: add usart3 alias to dtsi ARM: at91: sama5d3: reduce TWI internal clock frequency mmc: omap: Fix I2C dependency and make driver usable with device tree mmc: omap: Fix DMA configuration to not rely on device id ARM: dts: omap3-beagle: Fix USB host on beagle boards (for 3.13) ARM: dts: omap3-igep0020: name twl4030 VPLL2 regulator as vdds_dsi ARM: dts: AM33XX IGEP0033: add USB support ARM: dts: AM33XX BASE0033: add 32KBit EEPROM support ARM: dts: AM33XX BASE0033: add pinmux and user led support ...
2013-12-03Merge tag 'omap-for-v3.13/fixes-against-rc1-take2' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes From Tony Lindgren: Some omap related fixes that have come up with people moving to device tree only based booting for omap2+. The series contains a handful of fixes for the igep boards as they were one of the first omap3 boards to jump over completely to device tree based booting. So these can be considered regressions compared to booting igep in legacy mode with board files in v3.12. Also included are few other device tree vs legacy booting regressions: - yet more missing omap3 .dtsi entries that have showed up booting various boards with device tree only - n900 eMMC device tree fix - fixes for beagle USB EHCI - two fixes to make omap2420 MMC work As we're moving omap2+ to be device tree only for v3.14, I'd like to have v3.13 work equally well for legacy based booting and device tree based booting. So there will be likely few more device tree related booting patches trickling in. This series also includes a regression fix for the omap timer posted mode that may wrongly stay on from the bootloader for some SoCs. * tag 'omap-for-v3.13/fixes-against-rc1-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: mmc: omap: Fix I2C dependency and make driver usable with device tree mmc: omap: Fix DMA configuration to not rely on device id ARM: dts: omap3-beagle: Fix USB host on beagle boards (for 3.13) ARM: dts: omap3-igep0020: name twl4030 VPLL2 regulator as vdds_dsi ARM: dts: AM33XX IGEP0033: add USB support ARM: dts: AM33XX BASE0033: add 32KBit EEPROM support ARM: dts: AM33XX BASE0033: add pinmux and user led support ARM: dts: AM33XX BASE0033: add pinmux and hdmi node to enable display ARM: dts: omap3-igep0020: Add pinmuxing for DVI output ARM: dts: omap3-igep0020: Add pinmux setup for i2c devices ARM: dts: omap3-igep: Update to use the TI AM/DM37x processor ARM: dts: omap3-igep: Add support for LBEE1USJYC WiFi connected to SDIO ARM: dts: omap3-igep: Fix bus-width for mmc1 ARM: OMAP2+: dss-common: change IGEP's DVI DDC i2c bus ARM: OMAP2+: Disable POSTED mode for errata i103 and i767 ARM: OMAP2+: Fix eMMC on n900 with device tree ARM: OMAP2+: Add fixed regulator to omap2plus_defconfig ARM: OMAP2+: Fix more missing data for omap3.dtsi file Signed-off-by: Olof Johansson <olof@lixom.net>
2013-12-03Documentation: gpiolib: add 00-INDEX fileAlexandre Courbot
Give a short overview of the various GPIO documentation files. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-12-03dt: binding: reword PowerPC 8xxx GPIO documentationGerhard Sittig
re-format and re-word the device tree binding documentation for MPC8xxx and compatibles, reference the common document for interrupt controllers and remove outdated duplicate SoC specific information Cc: Mark Rutland <mark.rutland@arm.com> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Pawel Moll <Pawel.Moll@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: <devicetree@vger.kernel.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Gerhard Sittig <gsi@denx.de> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-12-03ARM: tegra: delete nvidia,tegra20-spi.txt bindingStephen Warren
This binding shouldn't exist; Tegra20 has two forms of SPI controller that are documented separately in nvidia,tegra20-sflash.txt and nvidia,tegra20-slink.txt. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-12-02hwmon: ntc_thermistor: Fix typo (pullup-uV -> pullup-uv)Chanwoo Choi
This patch fix typo of property name from 'pullup-uV' to 'pullup-uv'. The ntc_thermistor.c use 'pullup-uv' when parsing dt data. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-12-02of: add vendor prefix for GMTWei Ni
Adding Global Mixed-mode Technology Inc. to the list of devicetree vendor prefixes. Signed-off-by: Wei Ni <wni@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-12-02clk: exynos: Fix typos in DT bindings documentationLaurent Pinchart
s/comptible/compatible/ Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-12-02of: Add vendor prefix for LG CorporationThierry Reding
Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-12-02Documentation: net: fsl-fec.txt: Add phy-supply entryFabio Estevam
phy-supply is an optional property of the fec driver, so add it to the binding documentation. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-12-02ARM: dts: doc: Document missing binding for omap5-mpuSricharan R
The binding and support for omap5-mpu which has a cortex-a15 smp core, gic and integrated L2 cache has been existing for sometime. So Documenting the missing binding here. Cc: Benoit Cousson <bcousson@baylibre.com> Signed-off-by: Sricharan R <r.sricharan@ti.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-12-02dt-bindings: add ARMv8 PMU bindingRob Herring
Add missing "arm,armv8-pmuv3" compatible property for ARMv8 PMU. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Pawel Moll <pawel.moll@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
2013-12-02Merge branch 'for-john' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
2013-12-02KEYS: Fix multiple key add into associative arrayDavid Howells
If sufficient keys (or keyrings) are added into a keyring such that a node in the associative array's tree overflows (each node has a capacity N, currently 16) and such that all N+1 keys have the same index key segment for that level of the tree (the level'th nibble of the index key), then assoc_array_insert() calls ops->diff_objects() to indicate at which bit position the two index keys vary. However, __key_link_begin() passes a NULL object to assoc_array_insert() with the intention of supplying the correct pointer later before we commit the change. This means that keyring_diff_objects() is given a NULL pointer as one of its arguments which it does not expect. This results in an oops like the attached. With the previous patch to fix the keyring hash function, this can be forced much more easily by creating a keyring and only adding keyrings to it. Add any other sort of key and a different insertion path is taken - all 16+1 objects must want to cluster in the same node slot. This can be tested by: r=`keyctl newring sandbox @s` for ((i=0; i<=16; i++)); do keyctl newring ring$i $r; done This should work fine, but oopses when the 17th keyring is added. Since ops->diff_objects() is always called with the first pointer pointing to the object to be inserted (ie. the NULL pointer), we can fix the problem by changing the to-be-inserted object pointer to point to the index key passed into assoc_array_insert() instead. Whilst we're at it, we also switch the arguments so that they are the same as for ->compare_object(). BUG: unable to handle kernel NULL pointer dereference at 0000000000000088 IP: [<ffffffff81191ee4>] hash_key_type_and_desc+0x18/0xb0 ... RIP: 0010:[<ffffffff81191ee4>] hash_key_type_and_desc+0x18/0xb0 ... Call Trace: [<ffffffff81191f9d>] keyring_diff_objects+0x21/0xd2 [<ffffffff811f09ef>] assoc_array_insert+0x3b6/0x908 [<ffffffff811929a7>] __key_link_begin+0x78/0xe5 [<ffffffff81191a2e>] key_create_or_update+0x17d/0x36a [<ffffffff81192e0a>] SyS_add_key+0x123/0x183 [<ffffffff81400ddb>] tracesys+0xdd/0xe2 Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Stephen Gallagher <sgallagh@redhat.com>
2013-11-28Merge tag 'gpio-v3.13-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO fixes from Linus Walleij: "Here us a bunch of patches for the v3.13 series. Most important stuff is related to fixes and documentation for the new GPIO descriptor API. If the diffstat is scary you'll notice most of it is to Documentation/*: - A big slew of documentation for the gpiod transition that happened in the merge window, no semantic effect, but we should provide proper documentation with the new API. - Fix flags related to the new API. - Fix to the find_chip_by_name() lookup function related to the new API. - Fix of_find_gpio() when not using device tree. - Bug fix for the TB10x direction setting. - Error path fixes from Dan Carpenter. - Nasty IRQdomain bug relating to taking an unitialized spinlock. - Minor fixes here and there" * tag 'gpio-v3.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio: bcm281xx: Fix return value of bcm_kona_gpio_get() gpio: pl061: move irqdomain initialization gpio: ucb1400: Add MODULE_ALIAS gpiolib: fix of_find_gpio() when OF not defined gpio: fix memory leak in error path gpio: rcar: NULL dereference on error in probe() gpio: msm: make msm_gpio.summary_irq signed for error handling gpio: mvebu: make mvchip->irqbase signed for error handling gpiolib: use dedicated flags for GPIO properties gpiolib: fix find_chip_by_name() Documentation: gpiolib: document new interface gpio: tb10x: Set output value before setting direction to output
2013-11-27doc: fix generation of device-driversNicolas Dichtel
Since commit 7a6354e241d8 ("sched: Move wait.c into kernel/sched/"), the path of this file has changed. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Andy Whitcroft <apw@canonical.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-27remove obsolete references to powertweakDave Jones
This tool hasn't been maintained in over a decade, and is pretty much useless these days. Let's pretend it never happened. Also remove a long-dead email address. Signed-off-by: Dave Jones <davej@fedoraproject.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-27misc: mic: Fix endianness issues.Ashutosh Dixit
Endianness issues are now consistent as per the documentation in host/mic_virtio.h. Sparse warnings related to endianness are also fixed. Note that the MIC driver implementation assumes that the host can be both BE or LE whereas the card is always LE. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com> Reviewed-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-11-27misc: mic: Fix user space namespace pollution from mic_common.h.Ashutosh Dixit
Avoid declaring ALIGN() and __aligned() in include/uapi/linux/mic_common.h since they pollute user space namespace. Also, mic_aligned_size() can be simply replaced simply by sizeof() since all structures where mic_aligned_size() is used are declared using __attribute__ ((aligned(8))); -- >From mail from H Peter Anvin about this: On Fri, Nov 08, 2013 H Peter Anvin <h.peter.anvin@intel.com> wrote: Subject: Namespace pollution in mic_common.h This puts two macros, ALIGN() and __aligned(), into arbitrary user space namespace. This really isn't safe or acceptable, especially since those symbols are highly generic. ... When these structures are forced-aligned, they will in fact have padding automatically added by the compiler to an 8-byte boundary anyway, so mic_aligned_size() does nothing. ... Reported-by: H Peter Anvin <h.peter.anvin@intel.com> Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-11-27misc: mic: Bug fix for sysfs poll usage.Ashutosh Dixit
MIC user space daemon poll's on sysfs changes. The documentation for sysfs_poll(...) in fs/sysfs/file.c states that "Once poll/select indicates that the value has changed, you need to close and re-open the file, or seek to 0 and read again". This step was missed out earlier and resulted in the daemon spinning continuously rather than getting blocked in 'poll'. This bug was exposed by commit aea585ef8fa65163 introduced as part of sysfs changes in 3.13-rc1. A seek to 0 has been introduced to fix it. Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-11-26mmc: omap: Fix I2C dependency and make driver usable with device treeTony Lindgren
Some features can be configured by the companion I2C chips, which may not be available at the probe time. Fix the issue by returning -EPROBE_DEFER when the MMC controller slots are not configured. While at it, let's also add minimal device tree support so omap24xx platforms can use this driver without legacy mode since we claim to support device tree for mach-omap2 based systems. Although adding the minimal device tree support is not strictly a fix, it does remove one of the last blockers for dropping a bunch of legacy platform data for mach-omap2. Cc: linux-mmc@vger.kernel.org Acked-by: Chris Ball <cjb@laptop.org> Signed-off-by: Tony Lindgren <tony@atomide.com>