This keeps it in line with the SYSCALL_DEFINEx() / COMPAT_SYSCALL_DEFINEx()
calling convention.
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>

Remove references to two obsolete /proc/fs/cifs parameters
and update for a few minor SMB3 features.
Signed-off-by: NSteve French <smfrench@gmail.com>

Update list of items still TODO in cifs.ko
Signed-off-by: NSteve French <smfrench@gmail.com>

Some users are willing to provision huge amounts of memory to be able
to perform reassembly reasonnably well under pressure.

Current memory tracking is using one atomic_t and integers.

Switch to atomic_long_t so that 64bit arches can use more than 2GB,
without any cost for 32bit arches.

Note that this patch avoids an overflow error, if high_thresh was set
to ~2GB, since this test in inet_frag_alloc() was never true :

if (... || frag_mem_limit(nf) > nf->high_thresh)

Tested:

$ echo 16000000000 >/proc/sys/net/ipv4/ipfrag_high_thresh

<frag DDOS>

$ grep FRAG /proc/net/sockstat
FRAG: inuse 14705885 memory 16000002880

$ nstat -n ; sleep 1 ; nstat | grep Reas
IpReasmReqds                    3317150            0.0
IpReasmFails                    3317112            0.0
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Some applications still rely on IP fragmentation, and to be fair linux
reassembly unit is not working under any serious load.

It uses static hash tables of 1024 buckets, and up to 128 items per bucket (!!!)

A work queue is supposed to garbage collect items when host is under memory
pressure, and doing a hash rebuild, changing seed used in hash computations.

This work queue blocks softirqs for up to 25 ms when doing a hash rebuild,
occurring every 5 seconds if host is under fire.

Then there is the problem of sharing this hash table for all netns.

It is time to switch to rhashtables, and allocate one of them per netns
to speedup netns dismantle, since this is a critical metric these days.

Lookup is now using RCU. A followup patch will even remove
the refcount hold/release left from prior implementation and save
a couple of atomic operations.

Before this patch, 16 cpus (16 RX queue NIC) could not handle more
than 1 Mpps frags DDOS.

After the patch, I reach 9 Mpps without any tuning, and can use up to 2GB
of storage for the fragments (exact number depends on frags being evicted
after timeout)

$ grep FRAG /proc/net/sockstat
FRAG: inuse 1966916 memory 2140004608

A followup patch will change the limits for 64bit arches.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Kirill Tkhai <ktkhai@virtuozzo.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Florian Westphal <fw@strlen.de>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Alexander Aring <alex.aring@gmail.com>
Cc: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The Meson8m2 SoC uses a similar (potentially even identical) register
layout for the dwmac glue as Meson8b and GXBB. Unfortunately there is no
documentation available.
Testing shows that both, RMII and RGMII PHYs are working if they are
configured as on Meson8b. Add a new compatible string to the
documentation so differences (if there are any) between Meson8m2 and the
other SoCs can be taken care of within the driver.
Signed-off-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add a note that it is perfectly legal to "abandon" a request object:
- call .init() and then (as many times) .update()
- _not_ call any of .final(), .finup() or .export() at any point in
  future

Link: https://lkml.kernel.org/r/20180222114741.GA27631@gondor.apana.org.auSigned-off-by: NHoria Geantă <horia.geanta@nxp.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Add a new compatible string for the RZ/G1C (R8A77470) SoC.
Signed-off-by: NBiju Das <biju.das@bp.renesas.com>
Reviewed-by: NFabrizio Castro <fabrizio.castro@bp.renesas.com>
Acked-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Clarify that when disable_ipv6 is enabled even the ipv6 routes
are deleted for the selected interface and from now it will not
be possible to add addresses/routes to that interface
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

It's common practice to store MAC addresses for network interfaces into
nvmem devices. However the code to actually do this in the kernel lacks,
so this patch adds of_get_nvmem_mac_address() for drivers to obtain the
address from an nvmem cell provider.

This is particulary useful on devices where the ethernet interface cannot
be configured by the bootloader, for example because it's in an FPGA.
Signed-off-by: NMike Looijmans <mike.looijmans@topic.nl>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently the only way to specify a hibernate offset for a
swap file is on the kernel command line.

Add a new /sys/power/resume_offset that lets userspace
specify the offset and disk to use when initiating a hibernate
cycle.
Signed-off-by: NMario Limonciello <mario.limonciello@dell.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

This patch adds initial documentation for the Netfilter flowtable
infrastructure.
Reviewed-by: NFlorian Westphal <fw@strlen.de>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>

According to the old project site, https://sourceforge.net/projects/fuse/
the project has moved to https://github.com/libfuse/ so we update the
link to point to the latest libfuse release.
Signed-off-by: NMartin Kepplinger <martink@posteo.de>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

This adds bindings for the NI XGE 1G/10G network device.
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NMoritz Fischer <mdf@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add a new attribute group called "s2idle" under the sysfs directory
of each cpuidle state that supports the ->enter_s2idle callback
and put two new attributes, "usage" and "time", into that group to
represent the number of times the given state was requested for
suspend-to-idle and the total time spent in suspend-to-idle after
requesting that state, respectively.

That will allow diagnostic information related to suspend-to-idle
to be collected without enabling advanced debug features and
analyzing dmesg output.
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

Remove compatible string "simple-mfd" in the example as we have
already added devm_of_platform_populate() in the parent driver.
Signed-off-by: NRyder Lee <ryder.lee@mediatek.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Document support for the MSIOF module in the Renesas M3-N (r8a77965) SoC.

No driver update is needed.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: NSimon Horman <horms+renesas@verge.net.au>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

Add the pm8998 and pmi8998 regulators as used in the MSM8998 platform.
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: NMark Brown <broonie@kernel.org>

This patch adds the device tree bindings for the Spreadtrum EIC
controller. The EIC can be seen as a special type of GPIO, which
can only be used as input mode.
Signed-off-by: NBaolin Wang <baolin.wang@linaro.org>
Reviewed-by: NRob Herring <robh@kernel.org>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Some qcom platforms make some GPIOs or pins unavailable for use
by non-secure operating systems, and thus reading or writing the
registers for those pins will cause access control issues.
Introduce a DT property to describe the set of GPIOs that are
available for use so that higher level OSes are able to know what
pins to avoid reading/writing.

Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: <devicetree@vger.kernel.org>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NStephen Boyd <swboyd@chromium.org>
Reviewed-by: NRob Herring <robh@kernel.org>
Tested-by: NTimur Tabi <timur@codeaurora.org>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The Pyra-Handheld originally used the tca6424 but recently we have
replaced it by the pin and package compatible pcal6524. So let's
add this to the bindings and the driver.

And while we are at it, the pcal9555a does not have a compatible entry
either but is already supported by the device id table.
Signed-off-by: NH. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The Allwinner H6 SoC has two pin controllers, one main controller
(called CPUX-PORT in user manual) and one controller in CPUs power
domain (called CPUS-PORT in user manual).

This commit introduces support for the main pin controller on H6.

The pin bank A and B are not wired out and hidden from the SoC's
documents, however it's shown that the "ATE" (an AC200 chip
co-packaged with the H6 die) is connected to the main SoC die via these
pin banks. The information about these banks is just copied from the BSP
pinctrl driver, but re-formatted to fit the mainline pinctrl driver
format. The GPIO functions are dropped, as they're impossible to use --
except a GPIO&IRQ only pin (PB20) which might be the IRQ of ATE.
Signed-off-by: NIcenowy Zheng <icenowy@aosc.io>
Acked-by: NRob Herring <robh@kernel.org>
Reviewed-by: NAndre Przywara <andre.przywara@arm.com>
Acked-by: NMaxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The file Documentation/x86/early-microcode.txt was renamed to
Documentation/x86/microcode.txt in 0e325875, but it was still
referenced by its old name in a three places:

* Documentation/x86/00-INDEX
* arch/x86/Kconfig
* arch/x86/kernel/cpu/microcode/amd.c

This commit updates these references accordingly.

Fixes: 0e325875 ("x86/microcode: Document the three loading methods")
Signed-off-by: NJaak Ristioja <jaak@ristioja.ee>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

This driver let you plug in your RC controller to the adapter and
use it as input device in various RC simulators.
Signed-off-by: NMarcus Folkesson <marcus.folkesson@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Some variants of the Arm Cortex-55 cores (r0p0, r0p1, r1p0) suffer
from an erratum 1024718, which causes incorrect updates when DBM/AP
bits in a page table entry is modified without a break-before-make
sequence. The work around is to skip enabling the hardware DBM feature
on the affected cores. The hardware Access Flag management features
is not affected. There are some other cores suffering from this
errata, which could be added to the midr_list to trigger the work
around.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: ckadabi@codeaurora.org
Reviewed-by: NDave Martin <dave.martin@arm.com>
Signed-off-by: NSuzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

Fix spelling for parenthesis in dmatest documentation.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
[ jc: did s/parenthesis/parentheses/ and reflowed ]
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Make dmatest.rst indeed reST compatible.
Achieve this by fixing several formatting issues.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The documentation is not so clear for newbies in a sense of what type of the
channels are supported by it.

Clarify this by adding a note at the preamble of the documentation.
Reported-by: N"Zhu, Tony" <tony.zhu@intel.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-By: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

and switch to https where possible.

All links have been eyeballed to verify that the domains have
not changed, etc.
Signed-off-by: NSanjeev Gupta <ghane0@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Ever since commit 3a06c7ac ("posix-clocks: Remove interval timer
facility and mmap/fasync callbacks") the possibility of PHC based
posix timers has been removed.  In addition it will probably never
make sense to implement this functionality.

This patch removes the misleading text which seems to suggest that
posix timers for PHC devices will ever be a thing.
Signed-off-by: NRichard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add a compatible string for ethernet controller on UniPhier PXs3 SoC.
Signed-off-by: NKunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds a basic driver framework for the Intel(R) E800 Ethernet
Series of network devices. There is no functionality right now other than
the ability to load.
Signed-off-by: NAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: NTony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Add examples to show how to use nvme fault injection.
Signed-off-by: NThomas Tai <thomas.tai@oracle.com>
Reviewed-by: NEric Saint-Etienne <eric.saint.etienne@oracle.com>
Signed-off-by: NKarl Volz <karl.volz@oracle.com>
Reviewed-by: NKeith Busch <keith.busch@intel.com>
Signed-off-by: NSagi Grimberg <sagi@grimberg.me>
Signed-off-by: NJens Axboe <axboe@kernel.dk>

This fixes a little then / them confusion.
Signed-off-by: NMartin Kepplinger <martink@posteo.de>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Add kvmconfig, xenconfig and tinyconfig to the list of alternative
configuration commands. Descriptions are directly taken from the Makefile.
Signed-off-by: NMartin Kepplinger <martink@posteo.de>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Bits for M, R and L buttons are already processed in alps. Other newly
documented bits not yet.
Signed-off-by: NPali Rohár <pali.rohar@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Add support to get and control a list of resets for the device
as optional and shared. These resets must be kept de-asserted until
the device is enabled.

This is specified as shared because some SoCs like UniPhier series
have common reset controls with all ahci controller instances.
Signed-off-by: NKunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NTejun Heo <tj@kernel.org>

The cris architecture is getting removed, so we don't need the
uart driver any more.
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: NJesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The blackfin architecture is getting removed, so we can clean up
all the special cases in the musb driver.
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: NAaron Wu <aaron.wu@analog.com>
Acked-by: NBin Liu <b-liu@ti.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
[arnd: adding in fixups from Aaron and Stephen]
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The blackfin architecture is getting removed, so this driver has
become obsolete.
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Acked-by: NAaron Wu <aaron.wu@analog.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>