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2018-05-16tty: replace ->proc_fops with ->proc_showChristoph Hellwig
Just set up the show callback in the tty_operations, and use proc_create_single_data to create the file without additional boilerplace code. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16ide: replace ->proc_fops with ->proc_showChristoph Hellwig
Just set up the show callback in the tty_operations, and use proc_create_single_data to create the file without additional boilerplace code. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16isdn: replace ->proc_fops with ->proc_showChristoph Hellwig
And switch to proc_create_single_data. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16proc: introduce proc_create_net_singleChristoph Hellwig
Variant of proc_create_data that directly take a seq_file show callback and deals with network namespaces in ->open and ->release. All callers of proc_create + single_open_net converted over, and single_{open,release}_net are removed entirely. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16proc: introduce proc_create_net{,_data}Christoph Hellwig
Variants of proc_create{,_data} that directly take a struct seq_operations and deal with network namespaces in ->open and ->release. All callers of proc_create + seq_open_net converted over, and seq_{open,release}_net are removed entirely. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16net: move seq_file_single_net to <linux/seq_file_net.h>Christoph Hellwig
This helper deals with single_{open,release}_net internals and thus belongs here. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16ipv{4,6}/raw: simplify ѕeq_file codeChristoph Hellwig
Pass the hashtable to the proc private data instead of copying it into the per-file private data. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16ipv{4,6}/ping: simplify proc file creationChristoph Hellwig
Remove the pointless ping_seq_afinfo indirection and make the code look like most other protocols. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16ipv{4,6}/tcp: simplify procfs registrationChristoph Hellwig
Avoid most of the afinfo indirections and just call the proc helpers directly. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16ipv{4,6}/udp{,lite}: simplify proc registrationChristoph Hellwig
Remove a couple indirections to make the code look like most other protocols. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16proc: introduce proc_create_single{,_data}Christoph Hellwig
Variants of proc_create{,_data} that directly take a seq_file show callback and drastically reduces the boilerplate code in the callers. All trivial callers converted over. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16proc: introduce proc_create_seq_privateChristoph Hellwig
Variant of proc_create_data that directly take a struct seq_operations argument + a private state size and drastically reduces the boilerplate code in the callers. All trivial callers converted over. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16proc: introduce proc_create_seq{,_data}Christoph Hellwig
Variants of proc_create{,_data} that directly take a struct seq_operations argument and drastically reduces the boilerplate code in the callers. All trivial callers converted over. Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16proc: introduce a proc_pid_ns helperChristoph Hellwig
Factor out retrieving the per-sb pid namespaces from the sb private data into an easier to understand helper. Suggested-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-15iomap: add a swapfile activation functionDarrick J. Wong
Add a new iomap_swapfile_activate function so that filesystems can activate swap files without having to use the obsolete and slow bmap function. This enables XFS to support fallocate'd swap files and swap files on realtime devices. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Jan Kara <jack@suse.cz>
2018-05-15IB/umem: Use the correct mm during ib_umem_releaseLidong Chen
User-space may invoke ibv_reg_mr and ibv_dereg_mr in different threads. If ibv_dereg_mr is called after the thread which invoked ibv_reg_mr has exited, get_pid_task will return NULL and ib_umem_release will not decrease mm->pinned_vm. Instead of using threads to locate the mm, use the overall tgid from the ib_ucontext struct instead. This matches the behavior of ODP and disassociate in handling the mm of the process that called ibv_reg_mr. Cc: <stable@vger.kernel.org> Fixes: 87773dd56d54 ("IB: ib_umem_release() should decrement mm->pinned_vm from ib_umem_get") Signed-off-by: Lidong Chen <lidongchen@tencent.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-05-16Merge branch 'drm-next-4.18' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie
into drm-next Main changes for 4.18. I'd like to do a separate pull for vega20 later this week or next. Highlights: - Reserve pre-OS scanout buffer during init for seemless transition from console to driver - VEGAM support - Improved GPU scheduler documentation - Initial gfxoff support for raven - SR-IOV fixes - Default to non-AGP on PowerPC for radeon - Fine grained clock voltage control for vega10 - Power profiles for vega10 - Further clean up of powerplay/driver interface - Underlay fixes - Display link bw updates - Gamma fixes - Scatter/Gather display support on CZ/ST - Misc bug fixes and clean ups [airlied: fixup v3d vs scheduler API change] Link: https://patchwork.freedesktop.org/patch/msgid/20180515185450.1113-1-alexander.deucher@amd.com Signed-off-by: Dave Airlie <airlied@redhat.com>
2018-05-15clk: imx: Add new clo01 and clo2 controlled by CCOSRMichael Trimarchi
osc->cko2_sel->cko2_podf->clk_cko2->clk_cko Example of usage to provide clock to the sgtl5000 codec: sgtl5000@0a { compatible = "fsl,sgtl5000"; reg = <0x0a>; clocks = <&clks IMX6UL_CLK_OSC>; #sound-dai-cells = <0>; clocks = <&clks IMX6UL_CLK_CKO>; assigned-clocks = <&clks IMX6UL_CLK_CKO2_SEL>, <&clks IMX6UL_CLK_CKO2_PODF>, <&clks IMX6UL_CLK_CKO2>, <&clks IMX6UL_CLK_CKO>; assigned-clock-parents = <&clks IMX6UL_CLK_OSC>, <&clks IMX6UL_CLK_CKO2_SEL>, <&clks IMX6UL_CLK_CKO2_PODF>, <&clks IMX6UL_CLK_CKO2>; clock-names = "mclk"; wlf,shared-lrclk; Signed-off-by: Matteo Lisi <matteo.lisi@engicam.com> Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com> Tested-by: Michael Trimarchi <michael@amarulasolutions.com> Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-05-15dt-bindings: reset: mediatek: add entry for Mali-450 node to referSean Wang
Just add binding for a required reset referenced by Mali-450 on MT7623 or MT2701 SoC. Cc: devicetree@vger.kernel.org Signed-off-by: Sean Wang <sean.wang@mediatek.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-05-15dt-bindings: clock: mediatek: add entry for Mali-450 node to referSean Wang
Just add binding for a required clock referenced by Mali-450 on MT7623 or MT2701 SoC. Cc: devicetree@vger.kernel.org Signed-off-by: Sean Wang <sean.wang@mediatek.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-05-15clk: mediatek: correct the clocks for MT2701 HDMI PHY moduleRyder Lee
The hdmitx_dig_cts clock signal is not a child of clk26m, and the actual output of the PLL block is derived from the tvdpll via a configurable PLL post-divider. It is used as the PLL reference input to the HDMI PHY module. Fixes: e9862118272a ("clk: mediatek: Add MT2701 clock support") Signed-off-by: Chunhui Dai <chunhui.dai@mediatek.com> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-05-15clk: hisilicon: add missing usb3 clocks for Hi3798CV200 SoCJianguo Sun
There are two USB3 host controllers on Hi3798CV200 SoC. This commit adds missing clocks for them. Signed-off-by: Jianguo Sun <sunjianguo1@huawei.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-05-15clk:aspeed: Fix reset bits for PCI/VGA and PECIJae Hyun Yoo
This commit fixes incorrect setting of reset bits for PCI/VGA and PECI modules. 1. Reset bit for PCI/VGA is 8. 2. PECI reset bit is missing so added bit 10 as its reset bit. Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> Fixes: 15ed8ce5f84e ("clk: aspeed: Register gated clocks") Cc: stable <stable@vger.kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-05-15clk: aspeed: Support second reset registerJoel Stanley
The ast2500 has an additional reset register that contains resets not present in the ast2400. This enables support for this register, and adds the one reset line that is controlled by it. Reviewed-by: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-05-16Merge tag 'drm-intel-next-2018-05-14' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-intel into drm-next Last drm/i915 changes for v4.18: - NV12 enabling (Chandra, Maarten) - ICL workarounds (Oscar) - ICL basic DPLL enabling (Paulo) - GVT updates - DP link config refactoring (Jani) - Module parameter to override DMC firmware (Jani) - PSR updates (José, DK, Daniel, Ville) - ICL DP vswing programming (Manasi) - ICL DBuf slice updates (Mahesh) - Selftest fixes and updates (Chris, Matthew, Oscar) - Execlist fixes and updates (Chris) - Stolen memory first 4k fix (Hans de Goede) - wait_for fixes (Mika) - Tons of GEM improvements (Chris) - Plenty of other fixes and improvements (Everyone) - Crappy changelog (Me) Signed-off-by: Dave Airlie <airlied@redhat.com> # gpg: Signature made Mon 14 May 2018 11:04:24 PM AEST # gpg: using RSA key D398079D26ABEE6F # gpg: Good signature from "Jani Nikula <jani.nikula@intel.com>" # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: 1565 A65B 77B0 632E 1124 E59C D398 079D 26AB EE6F # Conflicts: # drivers/gpu/drm/i915/intel_lrc.c # drivers/gpu/drm/i915/intel_sprite.c Link: https://patchwork.freedesktop.org/patch/msgid/87k1s51bvw.fsf@intel.com
2018-05-15Merge tag 'scmi-updates-4.18' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into next/drivers SCMI cleanups for v4.18 This contains all of the trivial review comments that were not addressed as the series was already queued up for v4.17 and were not critical to go as fixes. They generally just improve code readability, fix kernel-docs, remove unused/unnecessary code, follow standard function naming and simplifies certain exit paths. * tag 'scmi-updates-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux: firmware: arm_scmi: simplify exit path by returning on error firmware: arm_scmi: improve exit paths and code readability firmware: arm_scmi: remove unnecessary bitmap_zero firmware: arm_scmi: drop unused `con_priv` structure member firmware: arm_scmi: rename scmi_xfer_{init,get,put} firmware: arm_scmi: rename get_transition_latency and add_opps_to_device firmware: arm_scmi: fix kernel-docs documentation firmware: arm_scmi: improve code readability using bitfield accessor macros Signed-off-by: Olof Johansson <olof@lixom.net>
2018-05-15Merge tag 'v4.17-next-soc' of ↵Olof Johansson
https://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux into next/drivers - use timeout helpers for scpsys and infracfg drivers - use of_device_get_match_data in pmic wrapper and scpsys * tag 'v4.17-next-soc' of https://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux: soc: mediatek: remove unneeded semicolon soc: mediatek: add a fixed wait for SRAM stable soc: mediatek: introduce a CAPS flag for scp_domain_data soc: mediatek: reuse regmap_read_poll_timeout helpers regmap: include <linux/ktime.h> from include/linux/regmap.h soc: mediatek: reuse read[l,x]_poll_timeout helpers soc: mediatek: use of_device_get_match_data() Signed-off-by: Olof Johansson <olof@lixom.net>
2018-05-15RDMA/uapi: Fix uapi breakageDoug Ledford
During this merge window, we added support for addition RDMA netlink operations. Unfortunately, we added the items in the middle of our uapi enum. Fix that before final release. Fixes: da5c85078215 ("RDMA/nldev: add driver-specific resource tracking") Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-05-15lib/string_helpers: Add missed declaration of struct task_structAndy Shevchenko
Starting from the commit 0d0443288f22 the new function has been introduced which takes struct task_struct as a parameter. Though, compiler doesn't know where to get information about it at this stage. Add missed declaration of struct task_struct to satisfy compiler. Fixes: 0d0443288f22 ("string_helpers: add kstrdup_quotable_cmdline") Cc: Kees Cook <keescook@chromium.org> Cc: James Morris <james.l.morris@oracle.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Kees Cook <keescook@chromium.org>
2018-05-15drm/scheduler: remove unused parameterNayan Deshmukh
this patch also effect the amdgpu and etnaviv drivers which use the function drm_sched_entity_init Signed-off-by: Nayan Deshmukh <nayan26deshmukh@gmail.com> Suggested-by: Christian König <christian.koenig@amd.com> Acked-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/amdgpu: Add support to change mtype for 2nd part of gart BOs on GFX9Yong Zhao
This change prepares for a workaround in amdkfd for a GFX9 HW bug. It requires the control stack memory of compute queues, which is allocated from the second page of MQD gart BOs, to have mtype NC, rather than the default UC. Signed-off-by: Yong Zhao <yong.zhao@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/amdgpu: add VEGAM ASIC typeLeo Liu
Signed-off-by: Leo Liu <leo.liu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/amdgpu: add save restore list cntl gpm and srm firmware supportHuang Rui
RLC save/restore list cntl/gpm_mem/srm_mem ucodes are used for CGPG and gfxoff function. Signed-off-by: Huang Rui <ray.huang@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/amdgpu: optionally do a writeback but don't invalidate TC for IB fencesMarek Olšák
There is a new IB flag that enables this new behavior. Full invalidation is unnecessary for RELEASE_MEM and doesn't make sense when draw calls from two adjacent gfx IBs run in parallel. This will be the new default for Mesa. v2: bump the version Signed-off-by: Marek Olšák <marek.olsak@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/amdgpu: handle domain mask checking v2Chunming Zhou
if domain is illegal, we should return error. v2: remove duplicated domain checking. Signed-off-by: Chunming Zhou <david1.zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/amdgpu: revert "add new bo flag that indicates BOs don't need fallback (v2)"Christian König
This reverts commit 6f51d28bfe8e1a676de5cd877639245bed3cc818. Makes fallback handling to complicated. This is just a feature for the GEM interface and shouldn't leak into the core BO create function. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Chunming Zhou <david1.zhou@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/gpu-sched: fix force APP kill hang(v4)Emily Deng
issue: there are VMC page fault occurred if force APP kill during 3dmark test, the cause is in entity_fini we manually signal all those jobs in entity's queue which confuse the sync/dep mechanism: 1)page fault occurred in sdma's clear job which operate on shadow buffer, and shadow buffer's Gart table is cleaned by ttm_bo_release since the fence in its reservation was fake signaled by entity_fini() under the case of SIGKILL received. 2)page fault occurred in gfx' job because during the lifetime of gfx job we manually fake signal all jobs from its entity in entity_fini(), thus the unmapping/clear PTE job depend on those result fence is satisfied and sdma start clearing the PTE and lead to GFX page fault. fix: 1)should at least wait all jobs already scheduled complete in entity_fini() if SIGKILL is the case. 2)if a fence signaled and try to clear some entity's dependency, should set this entity guilty to prevent its job really run since the dependency is fake signaled. v2: splitting drm_sched_entity_fini() into two functions: 1)The first one is does the waiting, removes the entity from the runqueue and returns an error when the process was killed. 2)The second one then goes over the entity, install it as completion signal for the remaining jobs and signals all jobs with an error code. v3: 1)Replace the fini1 and fini2 with better name 2)Call the first part before the VM teardown in amdgpu_driver_postclose_kms() and the second part after the VM teardown 3)Keep the original function drm_sched_entity_fini to refine the code. v4: 1)Rename entity->finished to entity->last_scheduled; 2)Rename drm_sched_entity_fini_job_cb() to drm_sched_entity_kill_jobs_cb(); 3)Pass NULL to drm_sched_entity_fini_job_cb() if -ENOENT; 4)Replace the type of entity->fini_status with "int"; 5)Remove the check about entity->finished. Signed-off-by: Monk Liu <Monk.Liu@amd.com> Signed-off-by: Emily Deng <Emily.Deng@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15bpf: sockmap, add hash map supportJohn Fastabend
Sockmap is currently backed by an array and enforces keys to be four bytes. This works well for many use cases and was originally modeled after devmap which also uses four bytes keys. However, this has become limiting in larger use cases where a hash would be more appropriate. For example users may want to use the 5-tuple of the socket as the lookup key. To support this add hash support. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-15PCI: Make pci_get_new_domain_nr() staticJan Kiszka
The only user of pci_get_new_domain_nr() is of_pci_bus_find_domain_nr(). Since they are defined in the same file, pci_get_new_domain_nr() can be made static, which also simplifies preprocessor conditionals. No functional change intended. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2018-05-15Merge tag 'afs-fixes-20180514' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs Pull AFS fixes from David Howells: "Here's a set of patches that fix a number of bugs in the in-kernel AFS client, including: - Fix directory locking to not use individual page locks for directory reading/scanning but rather to use a semaphore on the afs_vnode struct as the directory contents must be read in a single blob and data from different reads must not be mixed as the entire contents may be shuffled about between reads. - Fix address list parsing to handle port specifiers correctly. - Only give up callback records on a server if we actually talked to that server (we might not be able to access a server). - Fix some callback handling bugs, including refcounting, whole-volume callbacks and when callbacks actually get broken in response to a CB.CallBack op. - Fix some server/address rotation bugs, including giving up if we can't probe a server; giving up if a server says it doesn't have a volume, but there are more servers to try. - Fix the decoding of fetched statuses to be OpenAFS compatible. - Fix the handling of server lookups in Cache Manager ops (such as CB.InitCallBackState3) to use a UUID if possible and to handle no server being found. - Fix a bug in server lookup where not all addresses are compared. - Fix the non-encryption of calls that prevents some servers from being accessed (this also requires an AF_RXRPC patch that has already gone in through the net tree). There's also a patch that adds tracepoints to log Cache Manager ops that don't find a matching server, either by UUID or by address" * tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: afs: Fix the non-encryption of calls afs: Fix CB.CallBack handling afs: Fix whole-volume callback handling afs: Fix afs_find_server search loop afs: Fix the handling of an unfound server in CM operations afs: Add a tracepoint to record callbacks from unlisted servers afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID afs: Fix VNOVOL handling in address rotation afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility afs: Fix server rotation's handling of fileserver probe failure afs: Fix refcounting in callback registration afs: Fix giving up callbacks on server destruction afs: Fix address list parsing afs: Fix directory page locking
2018-05-15Merge branches 'exp.2018.05.15a', 'fixes.2018.05.15a', 'lock.2018.05.15a' ↵Paul E. McKenney
and 'torture.2018.05.15a' into HEAD exp.2018.05.15a: Parallelize expedited grace-period initialization. fixes.2018.05.15a: Miscellaneous fixes. lock.2018.05.15a: Decrease lock contention on root rcu_node structure, which is a step towards merging RCU flavors. torture.2018.05.15a: Torture-test updates.
2018-05-15rcu: Update list of rcu_future_grace_period() trace eventsPaul E. McKenney
Reworking grace-period initiation and funnel locking added new rcu_future_grace_period() trace events, so this commit updates the rcu_future_grace_period() trace event's header comment accordingly. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tested-by: Nicholas Piggin <npiggin@gmail.com>
2018-05-15srcu: Add cleanup_srcu_struct_quiesced()Paul E. McKenney
The current cleanup_srcu_struct() flushes work, which prevents it from being invoked from some workqueue contexts, as well as from atomic (non-blocking) contexts. This patch therefore introduced a cleanup_srcu_struct_quiesced(), which can be invoked only after all activity on the specified srcu_struct has completed. This restriction allows cleanup_srcu_struct_quiesced() to be invoked from workqueue contexts as well as from atomic contexts. Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tested-by: Nitzan Carmi <nitzanc@mellanox.com> Tested-by: Nicholas Piggin <npiggin@gmail.com>
2018-05-15rcu: Declare rcu_eqs_special_set() in public headerYury Norov
Because rcu_eqs_special_set() is declared only in internal header kernel/rcu/tree.h and stubbed in include/linux/rcutiny.h, it is inaccessible outside of the RCU implementation. This patch therefore moves the rcu_eqs_special_set() declaration to include/linux/rcutree.h, which allows it to be used in non-rcu kernel code. Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tested-by: Nicholas Piggin <npiggin@gmail.com>
2018-05-15softirq: Eliminate unused cond_resched_softirq() macroPaul E. McKenney
The cond_resched_softirq() macro is not used anywhere in mainline, so this commit simplifies the kernel by eliminating it. Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Eric Dumazet <edumazet@google.com> Tested-by: Nicholas Piggin <npiggin@gmail.com>
2018-05-15rcu: Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs()Paul E. McKenney
Commit e31d28b6ab8f ("trace: Eliminate cond_resched_rcu_qs() in favor of cond_resched()") substituted cond_resched() for the earlier call to cond_resched_rcu_qs(). However, the new-age cond_resched() does not do anything to help RCU-tasks grace periods because (1) RCU-tasks is only enabled when CONFIG_PREEMPT=y and (2) cond_resched() is a complete no-op when preemption is enabled. This situation results in hangs when running the trace benchmarks. A number of potential fixes were discussed on LKML (https://lkml.kernel.org/r/20180224151240.0d63a059@vmware.local.home), including making cond_resched() not be a no-op; making cond_resched() not be a no-op, but only when running tracing benchmarks; reverting the aforementioned commit (which works because cond_resched_rcu_qs() does provide an RCU-tasks quiescent state; and adding a call to the scheduler/RCU rcu_note_voluntary_context_switch() function. All were deemed unsatisfactory, either due to added cond_resched() overhead or due to magic functions inviting cargo culting. This commit renames cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs(), which provides a clear hint as to what this function is doing and why and where it should be used, and then replaces the call to cond_resched() with cond_resched_tasks_rcu_qs() in the trace benchmark's benchmark_event_kthread() function. Reported-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tested-by: Nicholas Piggin <npiggin@gmail.com>
2018-05-15bpf: sockmap, refactor sockmap routines to work with hashmapJohn Fastabend
This patch only refactors the existing sockmap code. This will allow much of the psock initialization code path and bpf helper codes to work for both sockmap bpf map types that are backed by an array, the currently supported type, and the new hash backed bpf map type sockhash. Most the fallout comes from three changes, - Pushing bpf programs into an independent structure so we can use it from the htab struct in the next patch. - Generalizing helpers to use void *key instead of the hardcoded u32. - Instead of passing map/key through the metadata we now do the lookup inline. This avoids storing the key in the metadata which will be useful when keys can be longer than 4 bytes. We rename the sk pointers to sk_redir at this point as well to avoid any confusion between the current sk pointer and the redirect pointer sk_redir. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-05-15PCI: dwc: Add support for EP modeGustavo Pimentel
The PCIe controller dual mode is capable of operating in Root Complex (RC) mode as well as EP mode by configuration option. Add EP support to the DesignWare driver on top of RC mode support. Add new property on pci_epc structure which allow to configure pci_epf_test driver accordingly to the controller specific requirements. Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
2018-05-15iommu/vt-d: Clean up pasid quirk for pre-production devicesLu Baolu
The pasid28 quirk is needed only for some pre-production devices. Remove it to make the code concise. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2018-05-15mtd: rawnand: Fix return type of __DIVIDE() when called with 32-bitGeert Uytterhoeven
The __DIVIDE() macro checks whether it is called with a 32-bit or 64-bit dividend, to select the appropriate divide-and-round-up routine. As the check uses the ternary operator, the result will always be promoted to a type that can hold both results, i.e. unsigned long long. When using this result in a division on a 32-bit system, this may lead to link errors like: ERROR: "__udivdi3" [drivers/mtd/nand/raw/nand.ko] undefined! Fix this by casting the result of the division to the type of the dividend. Fixes: 8878b126df769831 ("mtd: nand: add ->exec_op() implementation") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>