Commit graph

76234 commits

Author SHA1 Message Date
Valentin Schneider
8fa88a88d5 genirq: Remove preflow handler support
That was put in place for sparc64, and blackfin also used it for some time;
sparc64 no longer uses those, and blackfin is dead.

As there are no more users, remove preflow handlers.

Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200703155645.29703-3-valentin.schneider@arm.com
2020-07-04 10:02:06 +02:00
Toke Høiland-Jørgensen
d7bf2ebebc sched: consistently handle layer3 header accesses in the presence of VLANs
There are a couple of places in net/sched/ that check skb->protocol and act
on the value there. However, in the presence of VLAN tags, the value stored
in skb->protocol can be inconsistent based on whether VLAN acceleration is
enabled. The commit quoted in the Fixes tag below fixed the users of
skb->protocol to use a helper that will always see the VLAN ethertype.

However, most of the callers don't actually handle the VLAN ethertype, but
expect to find the IP header type in the protocol field. This means that
things like changing the ECN field, or parsing diffserv values, stops
working if there's a VLAN tag, or if there are multiple nested VLAN
tags (QinQ).

To fix this, change the helper to take an argument that indicates whether
the caller wants to skip the VLAN tags or not. When skipping VLAN tags, we
make sure to skip all of them, so behaviour is consistent even in QinQ
mode.

To make the helper usable from the ECN code, move it to if_vlan.h instead
of pkt_sched.h.

v3:
- Remove empty lines
- Move vlan variable definitions inside loop in skb_protocol()
- Also use skb_protocol() helper in IP{,6}_ECN_decapsulate() and
  bpf_skb_ecn_set_ce()

v2:
- Use eth_type_vlan() helper in skb_protocol()
- Also fix code that reads skb->protocol directly
- Change a couple of 'if/else if' statements to switch constructs to avoid
  calling the helper twice

Reported-by: Ilya Ponetayev <i.ponetaev@ndmsystems.com>
Fixes: d8b9605d26 ("net: sched: fix skb->protocol use in case of accelerated vlan path")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-03 14:34:53 -07:00
Linus Torvalds
7fec3ce50a pci-v5.8-fixes-1
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Merge tag 'pci-v5.8-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fix from Bjorn Helgaas:
 "Fix a pcie_find_root_port() simplification that broke power management
  because it didn't handle the edge case of finding the Root Port of a
  Root Port itself (Mika Westerberg)""

* tag 'pci-v5.8-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Make pcie_find_root_port() work for Root Ports
2020-07-03 12:14:51 -07:00
Michael Guralnik
4dca650991 net/mlx5: Enable QP number request when creating IPoIB underlay QP
If in the process of creating the underlay QP for an IPoIB interface
the user has set the address and specifically the 1st-3rd bytes
representing the QP number, use the requested QP number when creating
the underlay QP.

For a user to be able to request a QP number on QP creation, the MKEY_BY_NAME
NVCONFIG should be set. As mkey_by_name and qp_by_name are coupled in FW.
This requires driver to query the mkey_by_name max cap during initialization
and set the current cap if it was enabled in FW.

Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2020-07-03 18:38:01 +03:00
Linus Torvalds
7cc2a8ea10 block-5.8-2020-07-01
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Merge tag 'block-5.8-2020-07-01' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - Use kvfree_sensitive() for the block keyslot free (Eric)

 - Sync blk-mq debugfs flags (Hou)

 - Memory leak fix in virtio-blk error path (Hou)

* tag 'block-5.8-2020-07-01' of git://git.kernel.dk/linux-block:
  virtio-blk: free vblk-vqs in error path of virtblk_probe()
  block/keyslot-manager: use kvfree_sensitive()
  blk-mq-debugfs: update blk_queue_flag_name[] accordingly for new flags
2020-07-02 15:13:51 -07:00
Linus Torvalds
c93493b7cd io_uring-5.8-2020-07-01
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Merge tag 'io_uring-5.8-2020-07-01' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "One fix in here, for a regression in 5.7 where a task is waiting in
  the kernel for a condition, but that condition won't become true until
  task_work is run. And the task_work can't be run exactly because the
  task is waiting in the kernel, so we'll never make any progress.

  One example of that is registering an eventfd and queueing io_uring
  work, and then the task goes and waits in eventfd read with the
  expectation that it'll get woken (and read an event) when the io_uring
  request completes. The io_uring request is finished through task_work,
  which won't get run while the task is looping in eventfd read"

* tag 'io_uring-5.8-2020-07-01' of git://git.kernel.dk/linux-block:
  io_uring: use signal based task_work running
  task_work: teach task_work_add() to do signal_wake_up()
2020-07-02 14:56:22 -07:00
Greg Kroah-Hartman
c8d141ce1b USB: Fix up terminology in include files
USB is a HOST/DEVICE protocol, as per the specification and all
documentation.  Fix up terms that are not applicable to make things
match up with the terms used through the rest of the USB stack.

Acked-by: Felipe Balbi <balbi@kernel.org>
Link: https://lore.kernel.org/r/20200701171555.3198836-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-02 23:01:11 +02:00
Peter Zijlstra
78c2141b65 Merge branch 'perf/vlbr' 2020-07-02 15:51:48 +02:00
Richard Gong
bf0e5bf68a firmware: stratix10-svc: extend svc to support new RSU features
Extend Intel Stratix10 service layer driver to support new RSU DCMF
versions and max retry parameter.

DCMF = Decision Configuration Management Firmware. The max retry parameter
is the maximum times the images is allowed to reload itself before giving
up and starting RSU failover flow.

Signed-off-by: Richard Gong <richard.gong@intel.com>
Link: https://lore.kernel.org/r/1592231348-31334-3-git-send-email-richard.gong@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-02 14:48:48 +02:00
Richard Gong
36847f9e3e firmware: stratix10-svc: correct reconfig flag and timeout values
Correct the incorrect flag value for COMMAND_RECONFIG_FLAG_PARTIAL and
increase FPGA reconfig timeout values so that Intel service layer and
FPGA manager drivers can work with all versions of firmware.

Signed-off-by: Richard Gong <richard.gong@intel.com>
Link: https://lore.kernel.org/r/1592231348-31334-2-git-send-email-richard.gong@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-02 14:48:47 +02:00
Bartosz Golaszewski
67dd077239 device: remove 'extern' attribute from function prototypes in device.h
Functions are declared 'extern' implicitly by the compiler. There's no
reason to prepend every prototype with it. Remove the 'extern' keyword
from all function declarations in linux/device.h.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20200629065008.27620-4-brgl@bgdev.pl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-02 14:36:02 +02:00
Quentin Perret
10dd8573b0 cpufreq: Register governors at core_initcall
Currently, most CPUFreq governors are registered at the core_initcall
time when the given governor is the default one, and the module_init
time otherwise.

In preparation for letting users specify the default governor on the
kernel command line, change all of them to be registered at the
core_initcall unconditionally, as it is already the case for the
schedutil and performance governors. This will allow us to assume
that builtin governors have been registered before the built-in
CPUFreq drivers probe.

And since all governors have similar init/exit patterns now, introduce
two new macros, cpufreq_governor_{init,exit}(), to factorize the code.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-07-02 13:03:30 +02:00
Douglas Anderson
d40f0b6f2e
spi: Avoid setting the chip select if we don't need to
On some SPI controllers (like spi-geni-qcom) setting the chip select
is a heavy operation.  For instance on spi-geni-qcom, with the current
code, is was measured as taking upwards of 20 us.  Even on SPI
controllers that aren't as heavy, setting the chip select is at least
something like a MMIO operation over some peripheral bus which isn't
as fast as a RAM access.

While it would be good to find ways to mitigate problems like this in
the drivers for those SPI controllers, it can also be noted that the
SPI framework could also help out.  Specifically, in some situations,
we can see the SPI framework calling the driver's set_cs() with the
same parameter several times in a row.  This is specifically observed
when looking at the way the Chrome OS EC SPI driver (cros_ec_spi)
works but other drivers likely trip it to some extent.

Let's solve this by caching the chip select state in the core and only
calling into the controller if there was a change.  We check not only
the "enable" state but also the chip select mode (active high or
active low) since controllers may care about both the mode and the
enable flag in their callback.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20200629164103.1.Ied8e8ad8bbb2df7f947e3bc5ea1c315e041785a2@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-01 23:21:27 +01:00
Richard Guy Briggs
9fc54012d7 audit: remove unused !CONFIG_AUDITSYSCALL __audit_inode* stubs
Added 14 years ago in commit 73241ccca0 ("[PATCH] Collect more inode
information during syscall processing.") but never used however
needlessly churned no less than 10 times since.  Remove the unused
__audit_inode* stubs in the !CONFIG_AUDITSYSCALL case.

Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
2020-07-01 13:34:17 -04:00
Dan Williams
3022c6a1b4 driver-core: Introduce DEVICE_ATTR_ADMIN_{RO,RW}
A common pattern for using plain DEVICE_ATTR() instead of
DEVICE_ATTR_RO() and DEVICE_ATTR_RW() is for attributes that want to
limit read to only root.  I.e. many users of DEVICE_ATTR() are
specifying 0400 or 0600 for permissions.

Given the expectation that CAP_SYS_ADMIN is needed to access these
sensitive attributes and an explicit helper with the _ADMIN_ identifier
for DEVICE_ATTR_ADMIN_{RO,RW}.

Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Link: https://lore.kernel.org/r/159312906372.1850128.11611897078988158727.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-01 19:16:30 +02:00
Cristian Marussi
585dfab3fb firmware: arm_scmi: Add base notifications support
Make SCMI base protocol register with the notification core.

Link: https://lore.kernel.org/r/20200701155348.52864-10-cristian.marussi@arm.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-07-01 17:07:26 +01:00
Cristian Marussi
469ca1822d firmware: arm_scmi: Add reset notifications support
Make SCMI reset protocol register with the notification core.

Link: https://lore.kernel.org/r/20200701155348.52864-9-cristian.marussi@arm.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-07-01 17:07:26 +01:00
Cristian Marussi
128e3e9311 firmware: arm_scmi: Add sensor notifications support
Make SCMI sensor protocol register with the notification core.

Link: https://lore.kernel.org/r/20200701155348.52864-8-cristian.marussi@arm.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-07-01 17:07:26 +01:00
Cristian Marussi
fb5086dc47 firmware: arm_scmi: Add perf notifications support
Make SCMI perf protocol register with the notification core.

Link: https://lore.kernel.org/r/20200701155348.52864-7-cristian.marussi@arm.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-07-01 17:07:26 +01:00
Cristian Marussi
e27077bc04 firmware: arm_scmi: Add power notifications support
Make SCMI power protocol register with the notification core.

Link: https://lore.kernel.org/r/20200701155348.52864-6-cristian.marussi@arm.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-07-01 17:07:26 +01:00
Cristian Marussi
e7c215f358 firmware: arm_scmi: Add notification callbacks-registration
Add the core SCMI notifications callbacks-registration support: allow
users to register their own callbacks against the desired events.

Whenever a registration request is issued against a still non existent
event, mark such request as pending for later processing, in order to
account for possible late initializations of SCMI Protocols associated
to loadable drivers.

Link: https://lore.kernel.org/r/20200701155348.52864-3-cristian.marussi@arm.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-07-01 17:07:25 +01:00
Cristian Marussi
1fc2dd1864 firmware: arm_scmi: Add notification protocol-registration
Add the core SCMI notifications protocol-registration support: allow
protocols to register their own set of supported events, during their
initialization phase. Notification core can track multiple platform
instances by their handles.

Link: https://lore.kernel.org/r/20200701155348.52864-2-cristian.marussi@arm.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-07-01 17:07:25 +01:00
Song Liu
fa28dcb82a bpf: Introduce helper bpf_get_task_stack()
Introduce helper bpf_get_task_stack(), which dumps stack trace of given
task. This is different to bpf_get_stack(), which gets stack track of
current task. One potential use case of bpf_get_task_stack() is to call
it from bpf_iter__task and dump all /proc/<pid>/stack to a seq_file.

bpf_get_task_stack() uses stack_trace_save_tsk() instead of
get_perf_callchain() for kernel stack. The benefit of this choice is that
stack_trace_save_tsk() doesn't require changes in arch/. The downside of
using stack_trace_save_tsk() is that stack_trace_save_tsk() dumps the
stack trace to unsigned long array. For 32-bit systems, we need to
translate it to u64 array.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200630062846.664389-3-songliubraving@fb.com
2020-07-01 08:23:19 -07:00
Song Liu
d141b8bc57 perf: Expose get/put_callchain_entry()
Sanitize and expose get/put_callchain_entry(). This would be used by bpf
stack map.

Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200630062846.664389-2-songliubraving@fb.com
2020-07-01 08:22:08 -07:00
Christoph Hellwig
1008fe6dc3 block: remove the all_bdevs list
Instead just iterate over the inodes for the block device superblock.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-01 08:08:25 -06:00
Christoph Hellwig
47b5e00322 block: remove the unused bd_private field from struct block_device
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-01 08:08:23 -06:00
Christoph Hellwig
e556f6ba10 block: remove the bd_queue field from struct block_device
Just use bd_disk->queue instead.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-01 08:08:20 -06:00
Christoph Hellwig
6b7b181b67 block: remove the bd_block_size field from struct block_device
We can trivially calculate the block size from the inodes i_blkbits
variable.  Use that instead of keeping two redundant copies of the
information in slightly different formats.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-01 08:08:17 -06:00
Christoph Hellwig
5a6c35f9af block: remove direct_make_request
Now that submit_bio_noacct has a decent blk-mq fast path there is no
more need for this bypass.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-01 07:27:24 -06:00
Christoph Hellwig
ed00aabd5e block: rename generic_make_request to submit_bio_noacct
generic_make_request has always been very confusingly misnamed, so rename
it to submit_bio_noacct to make it clear that it is submit_bio minus
accounting and a few checks.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-01 07:27:24 -06:00
Christoph Hellwig
c62b37d96b block: move ->make_request_fn to struct block_device_operations
The make_request_fn is a little weird in that it sits directly in
struct request_queue instead of an operation vector.  Replace it with
a block_device_operations method called submit_bio (which describes much
better what it does).  Also remove the request_queue argument to it, as
the queue can be derived pretty trivially from the bio.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-01 07:27:24 -06:00
Christoph Hellwig
f695ca3886 block: remove the request_queue argument from blk_queue_split
The queue can be trivially derived from the bio, so pass one less
argument.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-01 07:27:23 -06:00
Heikki Krogerus
ad8db94d68 usb: typec: Add data structure for Enter_USB message
This data structure can be delivered to the mux drivers when
Enter_USB Message is used exactly the same way as the
Alternate Mode specific data structures are delivered to the
mux drivers when Enter Mode Messages are used.

The Enter_USB data structure shall have all details related
to the Enter_USB Message, most importantly the Enter_USB
Date Object that was used.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20200701115618.22482-3-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-01 14:06:25 +02:00
Heikki Krogerus
f470a65548 usb: typec: Combine the definitions for Accessory and USB modes
There is no need to describe them sparately.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20200701115618.22482-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-01 14:06:25 +02:00
Randy Dunlap
43ff98695c usb: fix kernel-doc warnings and formatting in <linux/usb.h>
Fix kernel-doc warnings in <linux/usb.h>:

../include/linux/usb.h:713: warning: Function parameter or member 'use_generic_driver' not described in 'usb_device'
../include/linux/usb.h:1253: warning: Function parameter or member 'match' not described in 'usb_device_driver'
../include/linux/usb.h:1253: warning: Function parameter or member 'id_table' not described in 'usb_device_driver'

Also drop an extra blank line and fix indentation.

Fixes: 77419aa403 ("USB: Fallback to generic driver when specific driver fails")
Fixes: 88b7381a93 ("USB: Select better matching USB drivers when available")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Bastien Nocera <hadess@hadess.net>
Link: https://lore.kernel.org/r/7014bab2-268c-69f6-7ef5-57fbd45c8b08@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-01 14:04:04 +02:00
Linus Walleij
08bf73a6f0 backlight: sky81452: Privatize platform data
The only way the platform data for the SKY81452 ever gets populated
is through the device tree.

The MFD device is bothered with this for no reason at all. Just
allocate the platform data in the driver and be happy.

Cc: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-07-01 10:40:11 +01:00
Linus Walleij
e1915eec54 backlight: sky81452: Convert to GPIO descriptors
The SKY81452 backlight driver just obtains a GPIO (named "gpios"
in the device tree) drives it high and leaves it high until the
driver is removed.

Switch to use GPIO descriptors for this, simple and
straight-forward.

Cc: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-07-01 10:39:32 +01:00
Dmitry Osipenko
4ec0a44ba8 of_graph: add of_graph_is_present()
In some cases it's very useful to silently check whether port node exists
at all in a device-tree before proceeding with parsing the graph. The DRM
bridges code is one example of such case where absence of a graph in a
device-tree is a legit condition.

This patch adds of_graph_is_present() which returns true if given
device-tree node contains OF graph port.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200701074232.13632-2-digetx@gmail.com
2020-07-01 10:49:02 +02:00
Bartosz Golaszewski
14eeb6e086 of: mdio: provide devm_of_mdiobus_register()
Implement a managed variant of of_mdiobus_register(). We need to make
mdio_devres into its own module because otherwise we'd hit circular
sumbol dependencies between phylib and of_mdio.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-30 15:57:34 -07:00
Bartosz Golaszewski
a0bd96f5ae of: mdio: remove the 'extern' keyword from function declarations
The 'extern' keyword in headers doesn't have any benefit. Remove them
all from the of_mdio.h header.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-30 15:57:34 -07:00
Bartosz Golaszewski
ac3a68d566 net: phy: don't abuse devres in devm_mdiobus_register()
We currently have two managed helpers for mdiobus - devm_mdiobus_alloc()
and devm_mdiobus_register(). The idea behind devres is that the release
callback releases whatever resource the devm function allocates. In the
mdiobus case however there's no devres associated with the device by
devm_mdiobus_register(). Instead the release callback for
devm_mdiobus_alloc(): _devm_mdiobus_free() unregisters the device if
it is marked as managed.

This all seems wrong. The managed structure shouldn't need to know or
care about whether it's managed or not - and this is the case now for
struct mii_bus. The devres wrapper should be opaque to the managed
resource.

This changeset makes devm_mdiobus_alloc() and devm_mdiobus_register()
conform to common devres standards: devm_mdiobus_alloc() allocates a
devres structure and registers a callback that will call mdiobus_free().
__devm_mdiobus_register() allocated another devres and registers a
callback that will unregister the bus.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-30 15:57:34 -07:00
Bartosz Golaszewski
8b11c20a65 phy: un-inline devm_mdiobus_register()
Functions should only be static inline if they're very short. This
devres helper is already over 10 lines and it will grow soon as we'll
be improving upon its approach. Pull it into mdio_devres.c.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-30 15:57:34 -07:00
Alexander Lobakin
663eacd899 net: qed: update copyright years
Set the actual copyright holder and years in all qed source files.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-30 15:51:40 -07:00
Alexander Lobakin
1f4d4ed6ac net: qed: convert to SPDX License Identifiers
QLogic QED drivers source code is dual licensed under
GPL-2.0/BSD-3-Clause.
Remove all the boilerplates in the existing code and replace it with the
correct SPDX tag.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-30 15:51:39 -07:00
Alexander Lobakin
ab81e23cf7 net: qed: correct existing SPDX tags
QLogic QED drivers source code is dual licensed under
GPL-2.0/BSD-3-Clause.
Correct already existing but wrong SPDX tags to match the actual
license.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-30 15:51:39 -07:00
Mika Westerberg
5396956cc7 PCI: Make pcie_find_root_port() work for Root Ports
Commit 6ae72bfa65 ("PCI: Unify pcie_find_root_port() and
pci_find_pcie_root_port()") broke acpi_pci_bridge_d3() because calling
pcie_find_root_port() on a Root Port returned NULL when it should return
the Root Port, which in turn broke power management of PCIe hierarchies.

Rework pcie_find_root_port() so it returns its argument when it is already
a Root Port.

[bhelgaas: test device only once, test for PCIe]
Fixes: 6ae72bfa65 ("PCI: Unify pcie_find_root_port() and pci_find_pcie_root_port()")
Link: https://lore.kernel.org/r/20200622161248.51099-1-mika.westerberg@linux.intel.com
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-06-30 16:58:27 -05:00
Linus Walleij
b239e4454e gpio updates for v5.9
- use kobj_to_dev() in sysfs interface
 - kerneldoc and documentation fixes
 - relax the interrupt flags in gpio-mpc8xxx
 - support new model in gpio-pca953x
 - remove a redundant check from gpio-max732x
 - support a new platform in gpio-zynq (+ some minor fixes)
 - don't depend on GPIOLIB when already inside the "if GPIOLIB" in Kconfig
 - support PM ops for suspend in gpio-omap
 - minor tweaks in gpiolib
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Merge tag 'gpio-updates-for-v5.9-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel

gpio updates for v5.9

- use kobj_to_dev() in sysfs interface
- kerneldoc and documentation fixes
- relax the interrupt flags in gpio-mpc8xxx
- support new model in gpio-pca953x
- remove a redundant check from gpio-max732x
- support a new platform in gpio-zynq (+ some minor fixes)
- don't depend on GPIOLIB when already inside the "if GPIOLIB" in Kconfig
- support PM ops for suspend in gpio-omap
- minor tweaks in gpiolib
2020-06-30 23:53:11 +02:00
David S. Miller
e708e2bd55 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:

====================
pull-request: bpf 2020-06-30

The following pull-request contains BPF updates for your *net* tree.

We've added 28 non-merge commits during the last 9 day(s) which contain
a total of 35 files changed, 486 insertions(+), 232 deletions(-).

The main changes are:

1) Fix an incorrect verifier branch elimination for PTR_TO_BTF_ID pointer
   types, from Yonghong Song.

2) Fix UAPI for sockmap and flow_dissector progs that were ignoring various
   arguments passed to BPF_PROG_{ATTACH,DETACH}, from Lorenz Bauer & Jakub Sitnicki.

3) Fix broken AF_XDP DMA hacks that are poking into dma-direct and swiotlb
   internals and integrate it properly into DMA core, from Christoph Hellwig.

4) Fix RCU splat from recent changes to avoid skipping ingress policy when
   kTLS is enabled, from John Fastabend.

5) Fix BPF ringbuf map to enforce size to be the power of 2 in order for its
   position masking to work, from Andrii Nakryiko.

6) Fix regression from CAP_BPF work to re-allow CAP_SYS_ADMIN for loading
   of network programs, from Maciej Żenczykowski.

7) Fix libbpf section name prefix for devmap progs, from Jesper Dangaard Brouer.

8) Fix formatting in UAPI documentation for BPF helpers, from Quentin Monnet.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-30 14:20:45 -07:00
Nicholas Piggin
b23d7a5f4a ring-buffer: speed up buffer resets by avoiding synchronize_rcu for each CPU
On a 144 thread system, `perf ftrace` takes about 20 seconds to start
up, due to calling synchronize_rcu() for each CPU.

  cat /proc/108560/stack
    0xc0003e7eb336f470
    __switch_to+0x2e0/0x480
    __wait_rcu_gp+0x20c/0x220
    synchronize_rcu+0x9c/0xc0
    ring_buffer_reset_cpu+0x88/0x2e0
    tracing_reset_online_cpus+0x84/0xe0
    tracing_open+0x1d4/0x1f0

On a system with 10x more threads, it starts to become an annoyance.

Batch these up so we disable all the per-cpu buffers first, then
synchronize_rcu() once, then reset each of the buffers. This brings
the time down to about 0.5s.

Link: https://lkml.kernel.org/r/20200625053403.2386972-1-npiggin@gmail.com

Tested-by: Anton Blanchard <anton@ozlabs.org>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-06-30 17:18:56 -04:00
Linus Torvalds
615bc218d6 Two simple fixes for v5.8:
1) Fix hook iteration and default value for inode_copy_up_xattr
 	from KP Singh <kpsingh@google.com>
 
 2) Fix the key_permission LSM hook function type
 	from Sami Tolvanen <samitolvanen@google.com>
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Merge tag 'fixes-v5.8-rc3-a' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

Pull security subsystem fixes from James Morris:
 "Two simple fixes for v5.8:

   - Fix hook iteration and default value for inode_copy_up_xattr
     (KP Singh)

   - Fix the key_permission LSM hook function type (Sami Tolvanen)"

* tag 'fixes-v5.8-rc3-a' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  security: Fix hook iteration and default value for inode_copy_up_xattr
  security: fix the key_permission LSM hook function type
2020-06-30 12:21:53 -07:00