summaryrefslogtreecommitdiff
path: root/include
AgeCommit message (Collapse)Author
2017-08-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: "The pull requests are getting smaller, that's progress I suppose :-) 1) Fix infinite loop in CIPSO option parsing, from Yujuan Qi. 2) Fix remote checksum handling in VXLAN and GUE tunneling drivers, from Koichiro Den. 3) Missing u64_stats_init() calls in several drivers, from Florian Fainelli. 4) TCP can set the congestion window to an invalid ssthresh value after congestion window reductions, from Yuchung Cheng. 5) Fix BPF jit branch generation on s390, from Daniel Borkmann. 6) Correct MIPS ebpf JIT merge, from David Daney. 7) Correct byte order test in BPF test_verifier.c, from Daniel Borkmann. 8) Fix various crashes and leaks in ASIX driver, from Dean Jenkins. 9) Handle SCTP checksums properly in mlx4 driver, from Davide Caratti. 10) We can potentially enter tcp_connect() with a cached route already, due to fastopen, so we have to explicitly invalidate it. 11) skb_warn_bad_offload() can bark in legitimate situations, fix from Willem de Bruijn" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits) net: avoid skb_warn_bad_offload false positives on UFO qmi_wwan: fix NULL deref on disconnect ppp: fix xmit recursion detection on ppp channels rds: Reintroduce statistics counting tcp: fastopen: tcp_connect() must refresh the route net: sched: set xt_tgchk_param par.net properly in ipt_init_target net: dsa: mediatek: add adjust link support for user ports net/mlx4_en: don't set CHECKSUM_COMPLETE on SCTP packets qed: Fix a memory allocation failure test in 'qed_mcp_cmd_init()' hysdn: fix to a race condition in put_log_buffer s390/qeth: fix L3 next-hop in xmit qeth hdr asix: Fix small memory leak in ax88772_unbind() asix: Ensure asix_rx_fixup_info members are all reset asix: Add rx->ax_skb = NULL after usbnet_skb_return() bpf: fix selftest/bpf/test_pkt_md_access on s390x netvsc: fix race on sub channel creation bpf: fix byte order test in test_verifier xgene: Always get clk source, but ignore if it's missing for SGMII ports MIPS: Add missing file for eBPF JIT. bpf, s390: fix build for libbpf and selftest suite ...
2017-08-10kbuild: linker script do not match C names unless ↵Nicholas Piggin
LD_DEAD_CODE_DATA_ELIMINATION is configured The .data and .bss sections were modified in the generic linker script to pull in sections named .data.<C identifier>, which are generated by gcc with -ffunction-sections and -fdata-sections options. The problem with this pattern is it can also match section names that Linux defines explicitly, e.g., .data.unlikely. This can cause Linux sections to get moved into the wrong place. The way to avoid this is to use ".." separators for explicit section names (the dot character is valid in a section name but not a C identifier). However currently there are sections which don't follow this rule, so for now just disable the wild card by default. Example: http://marc.info/?l=linux-arm-kernel&m=150106824024221&w=2 Cc: <stable@vger.kernel.org> # 4.9 Fixes: b67067f1176df ("kbuild: allow archs to select link dead code/data elimination") Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-08-09drm/tinydrm: Generalize tinydrm_xrgb8888_to_gray8()David Lechner
This adds parameters for vaddr and clip to tinydrm_xrgb8888_to_gray8() to make it more generic. dma_buf_{begin,end}_cpu_access() are moved out to the repaper driver. Return type is change to void to simplify error handling by callers. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/1502127581-10517-2-git-send-email-david@lechnology.com
2017-08-09media: drv-intf: saa7146: constify pci_device_idArvind Yadav
pci_device_id are not supposed to change at runtime. All functions working with pci_device_id provided by <linux/pci.h> work with const pci_device_id. So mark the non-const structs as const. So making 'pci_tbl' as const member of 'struct saa7146_extension'. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-09media: media/cec.h: add CEC_CAP_DEFAULTSHans Verkuil
The CEC_CAP_LOG_ADDRS, CEC_CAP_TRANSMIT, CEC_CAP_PASSTHROUGH and CEC_CAP_RC capabilities are normally always present. Add a CEC_CAP_DEFAULTS define that ORs these four caps to simplify drivers. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-09media: cec-funcs.h: cec_ops_report_features: set *dev_features to NULLHans Verkuil
gcc can get confused by this code and it thinks dev_features can be returned uninitialized. So initialize to NULL at the beginning to shut up the warning. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-09RDMA/core: Add wait/retry version of ibnl_unicastIsmail, Mustafa
Add a wait/retry version of ibnl_unicast, ibnl_unicast_wait, and modify ibnl_unicast to not wait/retry. This eliminates the undesirable wait for future users of ibnl_unicast. Change Portmapper calls originating from kernel to user-space to use ibnl_unicast_wait and take advantage of the wait/retry logic in netlink_unicast. Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com> Signed-off-by: Chien Tin Tung <chien.tin.tung@intel.com> Signed-off-by: Leon Romanovsky <leon@kernel.org>
2017-08-09crypto: af_alg - consolidation of duplicate codeStephan Mueller
Consolidate following data structures: skcipher_async_req, aead_async_req -> af_alg_async_req skcipher_rsgl, aead_rsql -> af_alg_rsgl skcipher_tsgl, aead_tsql -> af_alg_tsgl skcipher_ctx, aead_ctx -> af_alg_ctx Consolidate following functions: skcipher_sndbuf, aead_sndbuf -> af_alg_sndbuf skcipher_writable, aead_writable -> af_alg_writable skcipher_rcvbuf, aead_rcvbuf -> af_alg_rcvbuf skcipher_readable, aead_readable -> af_alg_readable aead_alloc_tsgl, skcipher_alloc_tsgl -> af_alg_alloc_tsgl aead_count_tsgl, skcipher_count_tsgl -> af_alg_count_tsgl aead_pull_tsgl, skcipher_pull_tsgl -> af_alg_pull_tsgl aead_free_areq_sgls, skcipher_free_areq_sgls -> af_alg_free_areq_sgls aead_wait_for_wmem, skcipher_wait_for_wmem -> af_alg_wait_for_wmem aead_wmem_wakeup, skcipher_wmem_wakeup -> af_alg_wmem_wakeup aead_wait_for_data, skcipher_wait_for_data -> af_alg_wait_for_data aead_data_wakeup, skcipher_data_wakeup -> af_alg_data_wakeup aead_sendmsg, skcipher_sendmsg -> af_alg_sendmsg aead_sendpage, skcipher_sendpage -> af_alg_sendpage aead_async_cb, skcipher_async_cb -> af_alg_async_cb aead_poll, skcipher_poll -> af_alg_poll Split out the following common code from recvmsg: af_alg_alloc_areq: allocation of the request data structure for the cipher operation af_alg_get_rsgl: creation of the RX SGL anchored in the request data structure The following changes to the implementation without affecting the functionality have been applied to synchronize slightly different code bases in algif_skcipher and algif_aead: The wakeup in af_alg_wait_for_data is triggered when either more data is received or the indicator that more data is to be expected is released. The first is triggered by user space, the second is triggered by the kernel upon finishing the processing of data (i.e. the kernel is ready for more). af_alg_sendmsg uses size_t in min_t calculation for obtaining len. Return code determination is consistent with algif_skcipher. The scope of the variable i is reduced to match algif_aead. The type of the variable i is switched from int to unsigned int to match algif_aead. af_alg_sendpage does not contain the superfluous err = 0 from aead_sendpage. af_alg_async_cb requires to store the number of output bytes in areq->outlen before the AIO callback is triggered. The POLLIN / POLLRDNORM is now set when either not more data is given or the kernel is supplied with data. This is consistent to the wakeup from sleep when the kernel waits for data. The request data structure is extended by the field last_rsgl which points to the last RX SGL list entry. This shall help recvmsg implementation to chain the RX SGL to other SG(L)s if needed. It is currently used by algif_aead which chains the tag SGL to the RX SGL during decryption. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-08-09mac80211: add api to start ba session timer expired flowNaftali Goldstein
Some drivers handle rx buffer reordering internally (and by extension handle also the rx ba session timer internally), but do not ofload the addba/delba negotiation. Add an api for these drivers to properly tear-down the ba session, including sending a delba. Signed-off-by: Naftali Goldstein <naftali.goldstein@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-08-08net: ipv6: avoid overhead when no custom FIB rules are installedVincent Bernat
If the user hasn't installed any custom rules, don't go through the whole FIB rules layer. This is pretty similar to f4530fa574df (ipv4: Avoid overhead when no custom FIB rules are installed). Using a micro-benchmark module [1], timing ip6_route_output() with get_cycles(), with 40,000 routes in the main routing table, before this patch: min=606 max=12911 count=627 average=1959 95th=4903 90th=3747 50th=1602 mad=821 table=254 avgdepth=21.8 maxdepth=39 value │ ┊ count 600 │▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ 199 880 │▒▒▒░░░░░░░░░░░░░░░░ 43 1160 │▒▒▒░░░░░░░░░░░░░░░░░░░░ 48 1440 │▒▒▒░░░░░░░░░░░░░░░░░░░░░░░ 43 1720 │▒▒▒▒░░░░░░░░░░░░░░░░░░░░░░░░░░░ 59 2000 │▒▒▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 50 2280 │▒▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 26 2560 │▒▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 31 2840 │▒▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 28 3120 │▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 17 3400 │▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 17 3680 │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 8 3960 │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 11 4240 │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 6 4520 │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 6 4800 │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 9 After: min=544 max=11687 count=627 average=1776 95th=4546 90th=3585 50th=1227 mad=565 table=254 avgdepth=21.8 maxdepth=39 value │ ┊ count 540 │▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ 201 800 │▒▒▒▒▒░░░░░░░░░░░░░░░░ 63 1060 │▒▒▒▒▒░░░░░░░░░░░░░░░░░░░░░ 68 1320 │▒▒▒░░░░░░░░░░░░░░░░░░░░░░░░░░ 39 1580 │▒▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 32 1840 │▒▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 32 2100 │▒▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 34 2360 │▒▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 33 2620 │▒▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 26 2880 │▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 22 3140 │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 9 3400 │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 8 3660 │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 9 3920 │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 8 4180 │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 8 4440 │░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ 8 At the frequency of the host during the bench (~ 3.7 GHz), this is about a 100 ns difference on the median value. A next step would be to collapse local and main tables, as in 0ddcf43d5d4a (ipv4: FIB Local/MAIN table collapse). [1]: https://github.com/vincentbernat/network-lab/blob/master/lab-routes-ipv6/kbench_mod.c Signed-off-by: Vincent Bernat <vincent@bernat.im> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08bpf/verifier: track signed and unsigned min/max valuesEdward Cree
Allows us to, sometimes, combine information from a signed check of one bound and an unsigned check of the other. We now track the full range of possible values, rather than restricting ourselves to [0, 1<<30) and considering anything beyond that as unknown. While this is probably not necessary, it makes the code more straightforward and symmetrical between signed and unsigned bounds. Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08bpf/verifier: rework value trackingEdward Cree
Unifies adjusted and unadjusted register value types (e.g. FRAME_POINTER is now just a PTR_TO_STACK with zero offset). Tracks value alignment by means of tracking known & unknown bits. This also replaces the 'reg->imm' (leading zero bits) calculations for (what were) UNKNOWN_VALUEs. If pointer leaks are allowed, and adjust_ptr_min_max_vals returns -EACCES, treat the pointer as an unknown scalar and try again, because we might be able to conclude something about the result (e.g. pointer & 0x40 is either 0 or 0x40). Verifier hooks in the netronome/nfp driver were changed to match the new data structures. Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-08drm/vc4: Add exec flags to allow forcing a specific X/Y tile walk order.Eric Anholt
This is useful to allow GL to provide defined results for overlapping glBlitFramebuffer, which X11 in turn uses to accelerate uncomposited window movement without first blitting to a temporary. x11perf -copywinwin100 goes from 1850/sec to 4850/sec. v2: Default to the same behavior as before when the flags aren't passed. (suggested by Boris) Signed-off-by: Eric Anholt <eric@anholt.net> Link: https://patchwork.freedesktop.org/patch/msgid/20170725162733.28007-2-eric@anholt.net Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-08-08block: Add rdma affinity based queue mapping helperSagi Grimberg
Like pci and virtio, we add a rdma helper for affinity spreading. This achieves optimal mq affinity assignments according to the underlying rdma device affinity maps. Reviewed-by: Jens Axboe <axboe@fb.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-08RDMA/core: expose affinity mappings per completion vectorSagi Grimberg
This will allow ULPs to intelligently locate threads based on completion vector cpu affinity mappings. In case the driver does not expose a get_vector_affinity callout, return NULL so the caller can maintain a fallback logic. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Håkon Bugge <haakon.bugge@oracle.com> Acked-by: Doug Ledford <dledford@redhat.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-08mlx5: move affinity hints assignments to generic codeSagi Grimberg
generic api takes care of spreading affinity similar to what mlx5 open coded (and even handles better asymmetric configurations). Ask the generic API to spread affinity for us, and feed him pre_vectors that do not participate in affinity settings (which is an improvement to what we had before). The affinity assignments should match what mlx5 tried to do earlier but now we do not set affinity to async, cmd and pages dedicated vectors. Also, remove mlx5e_get_cpu and introduce mlx5e_get_node (used for allocation purposes) and mlx5_get_vector_affinity (for indirection table construction) as they provide the needed information. Luckily, we have generic helpers to get cpumask and node given a irq vector. mlx5_get_vector_affinity will be used by mlx5_ib in a subsequent patch. Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-08mlx5: convert to generic pci_alloc_irq_vectorsSagi Grimberg
Now that we have a generic code to allocate an array of irq vectors and even correctly spread their affinity, correctly handle cpu hotplug events and more, were much better off using it. Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-08IB/CM: Add OPA Path record support to CMHiatt, Don
Add OPA path record support to the Connection Manager. Signed-off-by: Don Hiatt <don.hiatt@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-08IB/core: Change wc.slid from 16 to 32 bitsHiatt, Don
slid field in struct ib_wc is increased to 32 bits. This enables core components to use larger LIDs if needed. The user ABI is unchanged and return 16 bit values when queried. Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Don Hiatt <don.hiatt@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-08IB/core: Change port_attr.sm_lid from 16 to 32 bitsDasaratharaman Chandramouli
sm_lid field in struct ib_port_attr is increased to 32 bits. This enables core components to use larger LIDs if needed. The user ABI is unchanged and return 16 bit values when queried. Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Don Hiatt <don.hiatt@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-08IB/core: Change port_attr.lid size from 16 to 32 bitsDasaratharaman Chandramouli
lid field in struct ib_port_attr is increased to 32 bits. This enables core components to use larger LIDs if needed. The user ABI is unchanged and return 16 bit values when queried. Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Don Hiatt <don.hiatt@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-08IB/core: Convert ah_attr from OPA to IB when copying to userDasaratharaman Chandramouli
OPA address handle atttibutes that have 32 bit LIDs would have to be converted to IB address handle attribute with the LID field programmed in the GID before copying to user space. Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Reviewed-by: Don Hiatt <don.hiatt@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-08Merge tag 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma Pull rdma fixes from Doug Ledford: "Third set of -rc fixes for 4.13 cycle - small set of miscellanous fixes - a reasonably sizable set of IPoIB fixes that deal with multiple long standing issues" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: IB/hns: checking for IS_ERR() instead of NULL RDMA/mlx5: Fix existence check for extended address vector IB/uverbs: Fix device cleanup RDMA/uverbs: Prevent leak of reserved field IB/core: Fix race condition in resolving IP to MAC IB/ipoib: Notify on modify QP failure only when relevant Revert "IB/core: Allow QP state transition from reset to error" IB/ipoib: Remove double pointer assigning IB/ipoib: Clean error paths in add port IB/ipoib: Add get statistics support to SRIOV VF IB/ipoib: Add multicast packets statistics IB/ipoib: Set IPOIB_NEIGH_TBL_FLUSH after flushed completion initialization IB/ipoib: Prevent setting negative values to max_nonsrq_conn_qp IB/ipoib: Make sure no in-flight joins while leaving that mcast IB/ipoib: Use cancel_delayed_work_sync when needed IB/ipoib: Fix race between light events and interface restart
2017-08-08Merge tag 'scsi-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "Two small fixes, one re-fix of a previous fix and five patches sorting out hotplug in the bnx2X class of drivers. The latter is rather involved, but necessary because these drivers have started dropping lockdep recursion warnings on the hotplug lock because of its conversion to a percpu rwsem" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: sg: only check for dxfer_len greater than 256M scsi: aacraid: reading out of bounds scsi: qedf: Limit number of CQs scsi: bnx2i: Simplify cpu hotplug code scsi: bnx2fc: Simplify CPU hotplug code scsi: bnx2i: Prevent recursive cpuhotplug locking scsi: bnx2fc: Prevent recursive cpuhotplug locking scsi: bnx2fc: Plug CPU hotplug race
2017-08-08clk: fractional-divider: allow overriding of approximationElaine Zhang
Fractional dividers may have special requirements concerning numerator and denominator selection that differ from just getting the best approximation. For example on Rockchip socs the denominator must be at least 20 times larger than the numerator to generate precise clock frequencies. Therefore add the ability to provide custom approximation functions. Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-08cpufreq: Simplify cpufreq_can_do_remote_dvfs()Rafael J. Wysocki
The if () in cpufreq_can_do_remote_dvfs() is superfluous, so drop it and simply return the value of the expression under it. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-08-08xprtrdma: Harden backchannel call decodingChuck Lever
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-08-08drm: Nuke drm_atomic_legacy_backoffDaniel Vetter
Finally all users are gone! Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20170725080122.20548-9-daniel.vetter@ffwll.ch
2017-08-08drm: Nuke drm_atomic_helper_connector_dpmsDaniel Vetter
It's dead code, the core handles all this directly now. The only special case is nouveau and tda988x which used one function for both legacy modeset code and -nv50 atomic world instead of 2 vtables. But amounts to exactly the same. v2: Rebase over the panel/brideg refactorings in stm/ltdc. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Archit Taneja <architt@codeaurora.org> Cc: Andrzej Hajda <a.hajda@samsung.com> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com> Cc: Peter Senna Tschudin <peter.senna@collabora.com> Cc: Martin Donnelly <martin.donnelly@ge.com> Cc: Martyn Welch <martyn.welch@collabora.co.uk> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Sean Paul <seanpaul@chromium.org> Cc: David Airlie <airlied@linux.ie> Cc: Inki Dae <inki.dae@samsung.com> Cc: Joonyoung Shim <jy0922.shim@samsung.com> Cc: Seung-Woo Kim <sw0312.kim@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Kukjin Kim <kgene@kernel.org> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Stefan Agner <stefan@agner.ch> Cc: Alison Wang <alison.wang@freescale.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: CK Hu <ck.hu@mediatek.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Carlo Caione <carlo@caione.org> Cc: Kevin Hilman <khilman@baylibre.com> Cc: Marek Vasut <marex@denx.de> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Eric Anholt <eric@anholt.net> Cc: Mark Yao <mark.yao@rock-chips.com> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org> Cc: Vincent Abriou <vincent.abriou@st.com> Cc: Yannick Fertre <yannick.fertre@st.com> Cc: Philippe Cornu <philippe.cornu@st.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Chen-Yu Tsai <wens@csie.org> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Cc: Jyri Sarha <jsarha@ti.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Shawn Guo <shawnguo@kernel.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Cc: Jeffy Chen <jeffy.chen@rock-chips.com> Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com> Cc: Yakir Yang <kuankuan.y@gmail.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Jose Abreu <Jose.Abreu@synopsys.com> Cc: Romain Perier <romain.perier@collabora.com> Cc: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Cc: Xinliang Liu <z.liuxinliang@hisilicon.com> Cc: Alexey Brodkin <abrodkin@synopsys.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Rongrong Zou <zourongrong@gmail.com> Cc: Rob Clark <robdclark@gmail.com> Cc: Hai Li <hali@codeaurora.org> Cc: "Noralf Trønnes" <noralf@tronnes.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: intel-gfx@lists.freedesktop.org Cc: linux-mediatek@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Cc: nouveau@lists.freedesktop.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-tegra@vger.kernel.org Cc: virtualization@lists.linux-foundation.org Cc: zain wang <wzz@rock-chips.com> Cc: Baoyou Xie <baoyou.xie@linaro.org> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170725080122.20548-8-daniel.vetter@ffwll.ch Acked-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Archit Taneja <architt@codeaurora.org> Tested-by: Philippe Cornu <philippe.cornu@st.com> (on stm) Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Shawn Guo <shawnguo@kernel.org> Acked-by: Shawn Guo <shawnguo@kernel.org> Acked-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: Vincent Abriou <vincent.abriou@st.com>
2017-08-08drm: Nuke drm_atomic_helper_connector_set_propertyDaniel Vetter
It's dead code, the core handles all this directly now. This also allows us to unexport drm_atomic_helper_connector_set_property. The only special case is nouveau which used one function for both pre-nv50 legacy modeset code and post-nv50 atomic world instead of 2 vtables. But amounts to exactly the same. What is rather strange here is how few drivers set this up, I suspect the earlier patch to handle properties in the core did end up fixing a pile of possible issues. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Sean Paul <seanpaul@chromium.org> Cc: David Airlie <airlied@linux.ie> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org> Cc: Vincent Abriou <vincent.abriou@st.com> Cc: Eric Anholt <eric@anholt.net> Cc: intel-gfx@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170725080122.20548-7-daniel.vetter@ffwll.ch Acked-by: Vincent Abriou <vincent.abriou@st.com>
2017-08-08drm: Nuke drm_atomic_helper_plane_set_propertyDaniel Vetter
It's dead code, the core handles all this directly now. This also allows us to unexport drm_atomic_plane_set_property. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Liviu Dudau <liviu.dudau@arm.com> Cc: Brian Starkey <brian.starkey@arm.com> Cc: Mali DP Maintainers <malidp@foss.arm.com> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Sean Paul <seanpaul@chromium.org> Cc: David Airlie <airlied@linux.ie> Cc: Inki Dae <inki.dae@samsung.com> Cc: Joonyoung Shim <jy0922.shim@samsung.com> Cc: Seung-Woo Kim <sw0312.kim@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Kukjin Kim <kgene@kernel.org> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org> Cc: Vincent Abriou <vincent.abriou@st.com> Cc: Yannick Fertre <yannick.fertre@st.com> Cc: Philippe Cornu <philippe.cornu@st.com> Cc: Jyri Sarha <jsarha@ti.com> Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com> Cc: Rongrong Zou <zourongrong@gmail.com> Cc: Shawn Guo <shawn.guo@linaro.org> Cc: Alexey Brodkin <abrodkin@synopsys.com> Cc: Eric Engestrom <eric@engestrom.ch> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Rob Clark <robdclark@gmail.com> Cc: Archit Taneja <architt@codeaurora.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: intel-gfx@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Cc: linux-renesas-soc@vger.kernel.org Cc: Thomas Hellstrom <thellstrom@vmware.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170725080122.20548-6-daniel.vetter@ffwll.ch Reviewed-by: Archit Taneja <architt@codeaurora.org> Acked-by: Philippe Cornu <philippe.cornu@st.com> Tested-by: Philippe Cornu <philippe.cornu@st.com> Acked-by: Liviu Dudau <Liviu.Dudau@arm.com> Acked-by: Vincent Abriou <vincent.abriou@st.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2017-08-08drm: Nuke drm_atomic_helper_crtc_set_propertyDaniel Vetter
It's dead code because this is now handled in the core. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Sean Paul <seanpaul@chromium.org> Cc: David Airlie <airlied@linux.ie> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Cc: Alexey Brodkin <abrodkin@synopsys.com> Cc: Shawn Guo <shawn.guo@linaro.org> Cc: Eric Engestrom <eric@engestrom.ch> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com> Cc: Rob Clark <robdclark@gmail.com> Cc: Philippe Cornu <philippe.cornu@st.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Sushmita Susheelendra <ssusheel@codeaurora.org> Cc: Archit Taneja <architt@codeaurora.org> Cc: intel-gfx@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Thomas Hellstrom <thellstrom@vmware.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170725080122.20548-5-daniel.vetter@ffwll.ch Reviewed-by: Archit Taneja <architt@codeaurora.org> Acked-by: Philippe Cornu <philippe.cornu@st.com> Tested-by: Philippe Cornu <philippe.cornu@st.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Acked-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-08-08drm: Handle properties in the core for atomic driversDaniel Vetter
The reason behind the original indirection through the helper functions was to allow existing drivers to overwrite how they handle properties. For example when a vendor-specific userspace had expectations that didn't match atomic. That seemed likely, since atomic is standardizing a _lot_ more of the behaviour of a kms driver. But 20 drivers later there's no such need at all. Worse, this forces all drivers to hook up the default behaviour, breaking userspace if they forget to do that. And it forces us to export a bunch of core function just for those helpers. And finally, these helpers are the last places using drm_atomic_legacy_backoff() and the implicit acquire_ctx. This patch here just implements the new behaviour and updates the docs. Follow-up patches will garbage-collect all the dead code. v2: Fixup docs even better! v3: Make it actually work ... v4: Drop the uses_atomic_modeset() checks from the previous patch again, since they're now moved up in the callchain. Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Archit Taneja <architt@codeaurora.org> (v3) Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170725120204.2107-1-daniel.vetter@ffwll.ch
2017-08-08brcmfmac: Add support for CYW4373 SDIO/USB chipsetChi-Hsien Lin
Add support for CYW4373 SDIO/USB chipset. CYW4373 is a 1x1 dual-band 11ac chipset with 20/40/80Mhz channel support. It's a WiFi/BT combo device. Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com> Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-08-08media: drop use of MEDIA_API_VERSIONHans Verkuil
Set media_version to LINUX_VERSION_CODE, just as we did for driver_version. Nobody ever rememebers to update the version number, but LINUX_VERSION_CODE will always be updated. Move the MEDIA_API_VERSION define to the ifndef __KERNEL__ section of the media.h header. That way kernelspace can't accidentally start to use it again. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-08media: media-device: remove driver_versionHans Verkuil
Since the driver_version field in struct media_device is no longer used, just remove it. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-08media: media-device: set driver_version directlyHans Verkuil
Don't use driver_version from struct media_device, just return LINUX_VERSION_CODE as the other media subsystems do. The driver_version field in struct media_device will be removed in the following patches. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-08Merge tag 'v4.13-rc4' into patchworkMauro Carvalho Chehab
Linux 4.13-rc4 * tag 'v4.13-rc4': (863 commits) Linux 4.13-rc4 Fix compat_sys_sigpending breakage ext4: fix copy paste error in ext4_swap_extents() ext4: fix overflow caused by missing cast in ext4_resize_fs() ext4, project: expand inode extra size if possible ext4: cleanup ext4_expand_extra_isize_ea() ext4: restructure ext4_expand_extra_isize ext4: fix forgetten xattr lock protection in ext4_expand_extra_isize ext4: make xattr inode reads faster ext4: inplace xattr block update fails to deduplicate blocks ext4: remove unused mode parameter ext4: fix warning about stack corruption ext4: fix dir_nlink behaviour ext4: silence array overflow warning ext4: fix SEEK_HOLE/SEEK_DATA for blocksize < pagesize platform/x86: intel-vbtn: match power button on press rather than release ext4: release discard bio after sending discard commands sparc64: Fix exception handling in UltraSPARC-III memcpy. arm64: avoid overflow in VA_START and PAGE_OFFSET arm64: Fix potential race with hardware DBM in ptep_set_access_flags() ...
2017-08-08KVM: add spinlock optimization frameworkLongpeng(Mike)
If a vcpu exits due to request a user mode spinlock, then the spinlock-holder may be preempted in user mode or kernel mode. (Note that not all architectures trap spin loops in user mode, only AMD x86 and ARM/ARM64 currently do). But if a vcpu exits in kernel mode, then the holder must be preempted in kernel mode, so we should choose a vcpu in kernel mode as a more likely candidate for the lock holder. This introduces kvm_arch_vcpu_in_kernel() to decide whether the vcpu is in kernel-mode when it's preempted. kvm_vcpu_on_spin's new argument says the same of the spinning VCPU. Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-08-07Merge tag 'for-linus-20170807' of git://git.infradead.org/linux-mtdLinus Torvalds
Pull MTD fixes from Brian Norris: "I missed getting these out for rc4, but here are some MTD fixes. Just NAND fixes (in both the core handling, and a few drivers). Notes stolen from Boris: Core fixes: - fix data interface setup for ONFI NANDs that do not support the SET FEATURES command - fix a kernel doc header - fix potential integer overflow when retrieving timing information from the parameter page - fix wrong OOB layout for small page NANDs Driver fixes: - fix potential division-by-zero bug - fix backward compat with old atmel-nand DT bindings - fix ->setup_data_interface() in the atmel NAND driver" * tag 'for-linus-20170807' of git://git.infradead.org/linux-mtd: mtd: nand: atmel: Fix EDO mode check mtd: nand: Declare tBERS, tR and tPROG as u64 to avoid integer overflow mtd: nand: Fix timing setup for NANDs that do not support SET FEATURES mtd: nand: Fix a docs build warning mtd: nand: sunxi: fix potential divide-by-zero error nand: fix wrong default oob layout for small pages using soft ecc mtd: nand: atmel: Fix DT backward compatibility in pmecc.c
2017-08-07net: switchdev: Remove bridge bypass support from switchdevArkadi Sharshevsky
Currently the bridge port flags, vlans, FDBs and MDBs can be offloaded through the bridge code, making the switchdev's SELF bridge bypass implementation to be redundant. This implies several changes: - No need for dump infra in switchdev, DSA's special case is handled privately. - Remove obj_dump from switchdev_ops. - FDBs are removed from obj_add/del routines, due to the fact that they are offloaded through the bridge notification chain. - The switchdev_port_bridge_xx() and switchdev_port_fdb_xx() functions can be removed. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Ivan Vecera <ivecera@redhat.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07net: dsa: Move FDB dump implementation inside DSAArkadi Sharshevsky
>From all switchdev devices only DSA requires special FDB dump. This is due to lack of ability for syncing the hardware learned FDBs with the bridge. Due to this it is removed from switchdev and moved inside DSA. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07net: dsa: Remove redundant MDB dump supportArkadi Sharshevsky
Currently the MDB HW database is synced with the bridge's one, thus, There is no need to support special dump functionality. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07net: dsa: Remove support for bypass bridge port attributes/vlan setArkadi Sharshevsky
The bridge port attributes/vlan for DSA devices should be set only from bridge code. Furthermore, The vlans are synced totally with the bridge so there is no need for special dump support. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07net: dsa: Remove prepare phase for FDBArkadi Sharshevsky
The prepare phase for FDB add is unneeded because most of DSA devices can have failures during bus transactions (SPI, I2C, etc.), thus, the prepare phase cannot guarantee success of the commit stage. The support for learning FDB through notification chain, which will be introduced in the following patches, will provide the ability to notify back the bridge about successful offload. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07net: dsa: Change DSA slave FDB API to be switchdev independentArkadi Sharshevsky
In order to support FDB add/del to be on a notifier chain the slave API need to be changed to be switchdev independent. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07ipv6: sr: define core operations for seg6local lightweight tunnelDavid Lebrun
This patch implements a new type of lightweight tunnel named seg6local. A seg6local lwt is defined by a type of action and a set of parameters. The action represents the operation to perform on the packets matching the lwt's route, and is not necessarily an encapsulation. The set of parameters are arguments for the processing function. Each action is defined in a struct seg6_action_desc within seg6_action_table[]. This structure contains the action, mandatory attributes, the processing function, and a static headroom size required by the action. The mandatory attributes are encoded as a bitmask field. The static headroom is set to a non-zero value when the processing function always add a constant number of bytes to the skb (e.g. the header size for encapsulations). To facilitate rtnetlink-related operations such as parsing, fill_encap, and cmp_encap, each type of action parameter is associated to three function pointers, in seg6_action_params[]. All actions defined in seg6_local.h are detailed in [1]. [1] https://tools.ietf.org/html/draft-filsfils-spring-srv6-network-programming-01 Signed-off-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07ipv6: sr: export SRH insertion functionsDavid Lebrun
This patch exports the seg6_do_srh_encap() and seg6_do_srh_inline() functions. It also removes the CONFIG_IPV6_SEG6_INLINE knob that enabled the compilation of seg6_do_srh_inline(). This function is now built-in. Signed-off-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07net_sched: use void pointer for filter handleWANG Cong
Now we use 'unsigned long fh' as a pointer in every place, it is safe to convert it to a void pointer now. This gets rid of many casts to pointer. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07bpf: add support for sys_enter_* and sys_exit_* tracepointsYonghong Song
Currently, bpf programs cannot be attached to sys_enter_* and sys_exit_* style tracepoints. The iovisor/bcc issue #748 (https://github.com/iovisor/bcc/issues/748) documents this issue. For example, if you try to attach a bpf program to tracepoints syscalls/sys_enter_newfstat, you will get the following error: # ./tools/trace.py t:syscalls:sys_enter_newfstat Ioctl(PERF_EVENT_IOC_SET_BPF): Invalid argument Failed to attach BPF to tracepoint The main reason is that syscalls/sys_enter_* and syscalls/sys_exit_* tracepoints are treated differently from other tracepoints and there is no bpf hook to it. This patch adds bpf support for these syscalls tracepoints by . permitting bpf attachment in ioctl PERF_EVENT_IOC_SET_BPF . calling bpf programs in perf_syscall_enter and perf_syscall_exit The legality of bpf program ctx access is also checked. Function trace_event_get_offsets returns correct max offset for each specific syscall tracepoint, which is compared against the maximum offset access in bpf program. Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>