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2019-04-26NFS: Store the credential of the mount process in the nfs_serverTrond Myklebust1-0/+3
Store the credential of the mount process so that we can determine information such as the user namespace. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-26Merge tag 'mac80211-next-for-davem-2019-04-26' of ↵David S. Miller1-5/+9
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg says: ==================== Various updates, notably: * extended key ID support (from 802.11-2016) * per-STA TX power control support * mac80211 TX performance improvements * HE (802.11ax) updates * mesh link probing support * enhancements of multi-BSSID support (also related to HE) * OWE userspace processing support ==================== Signed-off-by: David S. Miller <[email protected]>
2019-04-26SUNRPC: Cache cred of process creating the rpc_clientTrond Myklebust1-0/+2
When converting kuids to AUTH_UNIX creds, etc we will want to use the same user namespace as the process that created the rpc client. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-26Merge tag 'trace-v5.1-rc6' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: "Three tracing fixes: - Use "nosteal" for ring buffer splice pages - Memory leak fix in error path of trace_pid_write() - Fix preempt_enable_no_resched() (use preempt_enable()) in ring buffer code" * tag 'trace-v5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: trace: Fix preempt_enable_no_resched() abuse tracing: Fix a memory leak by early error exit in trace_pid_write() tracing: Fix buffer_ref pipe ops
2019-04-26fsnotify: switch send_to_group() and ->handle_event to const struct qstr *Al Viro1-1/+1
note that conditions surrounding accesses to dname in audit_watch_handle_event() and audit_mark_handle_event() guarantee that dname won't have been NULL. Signed-off-by: Al Viro <[email protected]>
2019-04-26clk: Remove CLK_IS_BASIC clk flagStephen Boyd1-1/+1
This flag was historically used to indicate that a clk is a "basic" type of clk like a mux, divider, gate, etc. This never turned out to be very useful though because it was hard to cleanly split "basic" clks from other clks in a system. This one flag was a way for type introspection and it just didn't scale. If anything, it was used by the TI clk driver to indicate that a clk_hw wasn't contained in the SoC specific clk structure. We can get rid of this define now that TI is finding those clks a different way. Cc: Tero Kristo <[email protected]> Cc: Ralf Baechle <[email protected]> Cc: Paul Burton <[email protected]> Cc: James Hogan <[email protected]> Cc: <[email protected]> Cc: Thierry Reding <[email protected]> Cc: Kevin Hilman <[email protected]> Cc: <[email protected]> Cc: <[email protected]> Acked-by: Thierry Reding <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-26fsnotify(): switch to passing const struct qstr * for file_nameAl Viro2-7/+7
Note that in fnsotify_move() and fsnotify_link() we are guaranteed that dentry->d_name won't change during the fsnotify() evaluation (by having the parent directory locked exclusive), so we don't need to fetch dentry->d_name.name in the callers. In fsnotify_dirent() the same stability of dentry->d_name is also true, but it's a bit more convoluted - there is one callchain (devpts_pty_new() -> fsnotify_create() -> fsnotify_dirent()) where the parent is _not_ locked, but on devpts ->d_name of everything is unchanging; it has neither explicit nor implicit renames. Signed-off-by: Al Viro <[email protected]>
2019-04-26switch fsnotify_move() to passing const struct qstr * for old_nameAl Viro1-2/+2
note that in the second (RENAME_EXCHANGE) call of fsnotify_move() in vfs_rename() the old_dentry->d_name is guaranteed to be unchanged throughout the evaluation of fsnotify_move() (by the fact that the parent directory is locked exclusive), so we don't need to fetch old_dentry->d_name.name in the caller. Signed-off-by: Al Viro <[email protected]>
2019-04-26ovl_lookup_real_one(): don't bother with strlen()Al Viro2-2/+2
Signed-off-by: Al Viro <[email protected]>
2019-04-26tracing: Fix buffer_ref pipe opsJann Horn1-0/+1
This fixes multiple issues in buffer_pipe_buf_ops: - The ->steal() handler must not return zero unless the pipe buffer has the only reference to the page. But generic_pipe_buf_steal() assumes that every reference to the pipe is tracked by the page's refcount, which isn't true for these buffers - buffer_pipe_buf_get(), which duplicates a buffer, doesn't touch the page's refcount. Fix it by using generic_pipe_buf_nosteal(), which refuses every attempted theft. It should be easy to actually support ->steal, but the only current users of pipe_buf_steal() are the virtio console and FUSE, and they also only use it as an optimization. So it's probably not worth the effort. - The ->get() and ->release() handlers can be invoked concurrently on pipe buffers backed by the same struct buffer_ref. Make them safe against concurrency by using refcount_t. - The pointers stored in ->private were only zeroed out when the last reference to the buffer_ref was dropped. As far as I know, this shouldn't be necessary anyway, but if we do it, let's always do it. Link: http://lkml.kernel.org/r/[email protected] Cc: Ingo Molnar <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Al Viro <[email protected]> Cc: [email protected] Fixes: 73a757e63114d ("ring-buffer: Return reader page back into existing ring buffer") Signed-off-by: Jann Horn <[email protected]> Signed-off-by: Steven Rostedt (VMware) <[email protected]>
2019-04-26Merge branch 'api-features' into arm/smmuJoerg Roedel1-0/+140
2019-04-26Merge branch 'for-joerg/arm-smmu/updates' of ↵Joerg Roedel2-15/+20
git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into arm/smmu
2019-04-26Merge branch 'core/speculation' of ↵Will Deacon1-0/+24
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into for-next/mitigations Pull in core support for the "mitigations=" cmdline option from Thomas Gleixner via -tip, which we can build on top of when we expose our mitigation state via sysfs.
2019-04-26dmaengine: idma64: Move driver name to the headerAndy Shevchenko1-0/+14
There are two drivers that are relying on the iDMA 64-bit driver name to match. Instead of duplicating string in both of them, dedicate a header file and share it between users. Signed-off-by: Andy Shevchenko <[email protected]> Signed-off-by: Vinod Koul <[email protected]>
2019-04-26ieee80211: update HE IEs to D4.0 specLiad Kaufman1-5/+8
Update the out-dated comments as well, and have them point to the correct sections in the D4.0 spec. Signed-off-by: Liad Kaufman <[email protected]> Signed-off-by: Luca Coelho <[email protected]> Signed-off-by: Johannes Berg <[email protected]>
2019-04-26cfg80211: support non-inheritance elementSara Sharon1-0/+1
Subelement profile may specify element IDs it doesn't inherit from the management frame. Support it. Signed-off-by: Sara Sharon <[email protected]> Signed-off-by: Luca Coelho <[email protected]> Signed-off-by: Johannes Berg <[email protected]>
2019-04-26KVM: polling: add architecture backend to disable pollingChristian Borntraeger1-0/+10
There are cases where halt polling is unwanted. For example when running KVM on an over committed LPAR we rather want to give back the CPU to neighbour LPARs instead of polling. Let us provide a callback that allows architectures to disable polling. Signed-off-by: Christian Borntraeger <[email protected]> Acked-by: Paolo Bonzini <[email protected]> Reviewed-by: Cornelia Huck <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]>
2019-04-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller1-1/+1
Alexei Starovoitov says: ==================== pull-request: bpf 2019-04-25 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) the bpf verifier fix to properly mark registers in all stack frames, from Paul. 2) preempt_enable_no_resched->preempt_enable fix, from Peter. 3) other misc fixes. ==================== Signed-off-by: David S. Miller <[email protected]>
2019-04-26Merge branch 'for-upstream' of ↵David S. Miller2-0/+14
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next Johan Hedberg says: ==================== pull request: bluetooth-next 2019-04-25 Here's the main bluetooth-next pull request for the 5.2 kernel. - Added support for Mediatek SDIO controllers - Added support for Broadcom BCM2076B1 UART controller - Added support for Marvel SD8987 chipset - Fix buffer overflow bug in hidp protocol - Various other smaller fixes & improvements Please let me know if there are any issues pulling. Thanks. ==================== Signed-off-by: David S. Miller <[email protected]>
2019-04-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller8-4/+45
Two easy cases of overlapping changes. Signed-off-by: David S. Miller <[email protected]>
2019-04-25bpf: Fix preempt_enable_no_resched() abusePeter Zijlstra1-1/+1
Unless the very next line is schedule(), or implies it, one must not use preempt_enable_no_resched(). It can cause a preemption to go missing and thereby cause arbitrary delays, breaking the PREEMPT=y invariant. Cc: Roman Gushchin <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Daniel Borkmann <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2019-04-25bpf: support BPF_PROG_QUERY for BPF_FLOW_DISSECTOR attach_typeStanislav Fomichev1-0/+8
target_fd is target namespace. If there is a flow dissector BPF program attached to that namespace, its (single) id is returned. v5: * drop net ref right after rcu unlock (Daniel Borkmann) v4: * add missing put_net (Jann Horn) v3: * add missing inline to skb_flow_dissector_prog_query static def (kbuild test robot <[email protected]>) v2: * don't sleep in rcu critical section (Jakub Kicinski) * check input prog_cnt (exit early) Cc: Jann Horn <[email protected]> Signed-off-by: Stanislav Fomichev <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2019-04-25PCI: al: Add Amazon Annapurna Labs PCIe host controller driverJonathan Chocron1-0/+1
Add driver for Amazon's Annapurna Labs PCIe host controller. The controller is based on DesignWare's IP. The controller doesn't support accessing the Root Port's config space via ECAM, so we obtain its base address via an AMZN0001 device. Furthermore, the DesignWare PCIe controller doesn't filter out config transactions sent to devices 1 and up on its bus, so they are filtered by the driver. All subordinate buses do support ECAM access. Implementing specific PCI config access functions involves: - Adding an init function to obtain the Root Port's base address from an AMZN0001 device. - Adding a new entry in the MCFG quirk array. [bhelgaas: Note that there is no Kconfig option for this driver because it is only intended for use with the generic ACPI host bridge driver. This driver is only needed because the DesignWare IP doesn't completely support ECAM access to the root bus.] Link: https://lore.kernel.org/lkml/[email protected] Co-developed-by: Vladimir Aerov <[email protected]> Signed-off-by: Jonathan Chocron <[email protected]> Signed-off-by: Vladimir Aerov <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: David Woodhouse <[email protected]> Reviewed-by: Benjamin Herrenschmidt <[email protected]> Acked-by: Lorenzo Pieralisi <[email protected]>
2019-04-25PM / Domains: Allow to attach a CPU via genpd_dev_pm_attach_by_id|name()Ulf Hansson1-0/+1
Attaching a device via genpd_dev_pm_attach_by_id|name() makes genpd allocate a virtual device that it attaches instead. This leads to a problem in case when the base device belongs to a CPU. More precisely, it means genpd_get_cpu() compares against the virtual device, thus it fails to find a matching CPU device. Address this limitation by passing the base device to genpd_get_cpu() rather than the virtual device. Moreover, to deal with detach correctly from genpd_remove_device(), store the CPU number in struct generic_pm_domain_data, so as to be able to clear the corresponding bit in the cpumask for the genpd. Signed-off-by: Ulf Hansson <[email protected]> Acked-by: Viresh Kumar <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>
2019-04-25Merge cpuidle material depended on by the subsequent changes.Rafael J. Wysocki3-2/+27
2019-04-25kobject: Add support for default attribute groups to kobj_typeKimberly Brown1-1/+2
kobj_type currently uses a list of individual attributes to store default attributes. Attribute groups are more flexible than a list of attributes because groups provide support for attribute visibility. So, add support for default attribute groups to kobj_type. In future patches, the existing uses of kobj_type’s attribute list will be converted to attribute groups. When that is complete, kobj_type’s attribute list, “default_attrs”, will be removed. Signed-off-by: Kimberly Brown <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-04-25coresight: Communicate perf event to sink buffer allocation functionsMathieu Poirier1-2/+3
Make struct perf_event available to sink buffer allocation functions in order to use the pid they carry to allocate and free buffer memory along with regimenting access to what source a sink can collect data for. Signed-off-by: Mathieu Poirier <[email protected]> Tested-by: Leo Yan <[email protected]> Tested-by: Robert Walker <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-04-25coresight: Adding return code to sink::disable() operationMathieu Poirier1-1/+1
In preparation to handle device reference counting inside of the sink drivers, add a return code to the sink::disable() operation so that proper action can be taken if a sink has not been disabled. Signed-off-by: Mathieu Poirier <[email protected]> Reviewed-by: Suzuki K Poulose <[email protected]> Tested-by: Leo Yan <[email protected]> Tested-by: Robert Walker <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-04-25coresight: etm4x: Add kernel configuration for CONTEXTIDMathieu Poirier1-0/+2
Set the proper bit in the configuration register when contextID tracing has been requested by user space. That way PE_CONTEXT elements are generated by the tracers when a process is installed on a CPU. Signed-off-by: Mathieu Poirier <[email protected]> Reviewed-by: Suzuki K Poulose <[email protected]> Tested-by: Leo Yan <[email protected]> Tested-by: Robert Walker <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-04-25fs: kernfs: Corrected spelling mistakeChristina Quast1-1/+1
flies => files Signed-off-by: Christina Quast <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-04-25dm mpath: fix missing call of path selector type->end_ioYufen Yu1-1/+2
After commit 396eaf21ee17 ("blk-mq: improve DM's blk-mq IO merging via blk_insert_cloned_request feedback"), map_request() will requeue the tio when issued clone request return BLK_STS_RESOURCE or BLK_STS_DEV_RESOURCE. Thus, if device driver status is error, a tio may be requeued multiple times until the return value is not DM_MAPIO_REQUEUE. That means type->start_io may be called multiple times, while type->end_io is only called when IO complete. In fact, even without commit 396eaf21ee17, setup_clone() failure can also cause tio requeue and associated missed call to type->end_io. The service-time path selector selects path based on in_flight_size, which is increased by st_start_io() and decreased by st_end_io(). Missed calls to st_end_io() can lead to in_flight_size count error and will cause the selector to make the wrong choice. In addition, queue-length path selector will also be affected. To fix the problem, call type->end_io in ->release_clone_rq before tio requeue. map_info is passed to ->release_clone_rq() for map_request() error path that result in requeue. Fixes: 396eaf21ee17 ("blk-mq: improve DM's blk-mq IO merging via blk_insert_cloned_request feedback") Cc: [email protected] Signed-off-by: Yufen Yu <[email protected]> Signed-off-by: Mike Snitzer <[email protected]>
2019-04-25clk: at91: master: Add sam9x60 supportAlexandre Belloni1-0/+2
The sam9x60 cpu clock is located at a different offset but is otherwise similar to the master clock. Signed-off-by: Alexandre Belloni <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-25clk: at91: allow configuring generated PCR layoutAlexandre Belloni1-6/+1
The PCR register layout for GCLKCSS is changing for the future SoCs, allow configuring it. Signed-off-by: Alexandre Belloni <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-25clk: at91: allow configuring peripheral PCR layoutAlexandre Belloni1-3/+0
The PCR register actually changed layout for each SoC. By chance, this didn't have impact on sama5d[2-4] support but since sama5d3, PID is seven bits wide and sama5d4 and sama5d2 don't have DIV. For the DT backward compatibility, keep the layout as is. Signed-off-by: Alexandre Belloni <[email protected]> Signed-off-by: Stephen Boyd <[email protected]>
2019-04-25include/fsl: add common FlexTimer #defines in a separate header.Patrick Havelange1-0/+88
Several files are/will be using the same #defines to use the Flextimer module. Regroup them in a common file. Reviewed-by: Esben Haabendal <[email protected]> Signed-off-by: Patrick Havelange <[email protected]> Signed-off-by: William Breathitt Gray <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-04-25counter: Introduce the Generic Counter interfaceWilliam Breathitt Gray2-0/+555
This patch introduces the Generic Counter interface for supporting counter devices. In the context of the Generic Counter interface, a counter is defined as a device that reports one or more "counts" based on the state changes of one or more "signals" as evaluated by a defined "count function." Driver callbacks should be provided to communicate with the device: to read and write various Signals and Counts, and to set and get the "action mode" and "count function" for various Synapses and Counts respectively. To support a counter device, a driver must first allocate the available Counter Signals via counter_signal structures. These Signals should be stored as an array and set to the signals array member of an allocated counter_device structure before the Counter is registered to the system. Counter Counts may be allocated via counter_count structures, and respective Counter Signal associations (Synapses) made via counter_synapse structures. Associated counter_synapse structures are stored as an array and set to the the synapses array member of the respective counter_count structure. These counter_count structures are set to the counts array member of an allocated counter_device structure before the Counter is registered to the system. A counter device is registered to the system by passing the respective initialized counter_device structure to the counter_register function; similarly, the counter_unregister function unregisters the respective Counter. The devm_counter_register and devm_counter_unregister functions serve as device memory-managed versions of the counter_register and counter_unregister functions respectively. Reviewed-by: Jonathan Cameron <[email protected]> Signed-off-by: William Breathitt Gray <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-04-25NFS: Remove redundant open context from nfs_pageTrond Myklebust1-2/+1
The lock context already references and tracks the open context, so take the opportunity to save some space in struct nfs_page. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25NFS: Add a helper to return a pointer to the open context of a struct nfs_pageTrond Myklebust1-0/+6
Add a helper for when we remove the explicit pointer to the open context. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25pNFS: Add tracking to limit the number of pNFS retriesTrond Myklebust1-1/+3
When the client is reading or writing using pNFS, and hits an error on the DS, then it typically sends a LAYOUTERROR and/or LAYOUTRETURN to the MDS, before redirtying the failed pages, and going for a new round of reads/writebacks. The problem is that if the server has no way to fix the DS, then we may need a way to interrupt this loop after a set number of attempts have been made. This patch adds an optional module parameter that allows the admin to specify how many times to retry the read/writeback process before failing with a fatal error. The default behaviour is to retry forever. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25NFS: Remove unused argument from nfs_create_request()Trond Myklebust1-1/+0
All the callers of nfs_create_request() are now creating page group heads, so we can remove the redundant 'last' page argument. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25NFS: Replace custom error reporting mechanism with generic oneTrond Myklebust1-1/+0
Replace the NFS custom error reporting mechanism with the generic mapping_set_error(). Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25NFS: Add a mount option "softerr" to allow clients to see ETIMEDOUT errorsTrond Myklebust1-0/+1
Add a mount option that exposes the ETIMEDOUT errors that occur during soft timeouts to the application. This allows aware applications to distinguish between server disk IO errors and client timeout errors. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25NFS: Move internal constants out of uapi/linux/nfs_mount.hTrond Myklebust1-0/+9
When the label says "for internal use only", then it doesn't belong in the 'uapi' subtree. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25SUNRPC: Add the 'softerr' rpc_client flagTrond Myklebust1-0/+2
Add the 'softerr' rpc client flag that sets the RPC_TASK_TIMEOUT flag on all new rpc tasks that are attached to that rpc client. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25SUNRPC: Add tracking of RPC level errorsTrond Myklebust1-0/+2
Add variables to track RPC level errors so that we can distinguish between issue that arose in the RPC transport layer as opposed to those arising from the reply message. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25SUNRPC: Simplify queue timeouts using timer_reduce()Trond Myklebust1-1/+0
Simplify the setting of queue timeouts by using the timer_reduce() function. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25SUNRPC: Fix up tracking of timeoutsTrond Myklebust1-0/+1
Add a helper to ensure that debugfs and friends print out the correct current task timeout value. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25SUNRPC: Add function rpc_sleep_on_timeout()Trond Myklebust1-1/+8
Clean up the RPC task sleep interfaces by replacing the task->tk_timeout 'hidden parameter' to rpc_sleep_on() with a new function that takes an absolute timeout. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25SUNRPC: Remove unused argument 'action' from rpc_sleep_on_priority()Trond Myklebust1-1/+0
None of the callers set the 'action' argument, so let's just remove it. Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
2019-04-25SUNRPC: Refactor xprt_request_wait_receive()Trond Myklebust1-3/+3
Convert the transport callback to actually put the request to sleep instead of just setting a timeout. This is in preparation for rpc_sleep_on_timeout(). Signed-off-by: Trond Myklebust <[email protected]> Signed-off-by: Anna Schumaker <[email protected]>
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