- Mostly the usual churn due to options being reordered or not added
in the right locations.
- Some various enabling of new drivers, etc.
... i.e. the usual updates, nothing particularly sticks out.
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Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC defconfig updates from Olof Johansson:
"Mostly the usual churn due to options being reordered or not added in
the right locations.
Some various enabling of new drivers, etc.
... i.e. the usual updates, nothing particularly sticks out"
* tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (23 commits)
arm64: defconfig: Update UFSHCD for Hi3660 soc
ARM: multi_v7_defconfig: Enable support for STPMIC1
ARM: multi_v7_defconfig: Enable missing drivers for supported Chromebooks
arm64: defconfig: enable mv-xor driver
ARM: Enable Trusted Foundations for multiplatform ARM v7
ARM: tegra: Enable Trusted Foundations by default
ARM: tegra: Update default configuration for v5.1-rc1
ARM: multi_v7_defconfig: Update for moved options
ARM: multi_v7_defconfig: Update for dropped options
ARM: shmobile: Enable USB [EO]HCI HCD PLATFORM support in shmobile_defconfig
ARM: shmobile: Enable PHY_RCAR_GEN3_USB2 in shmobile_defconfig
ARM: qcom_defconfig: add options for LG Nexus 5 phone
arm64: defconfig: include the Agilex platform to the arm64 defconfig
arm64: defconfig: Add PWM Fan support
arm64: defconfig: Enable Tegra HDA support
ARM: multi_v7_defconfig: Enable support for CFI NOR FLASH
ARM: shmobile: defconfig: Enable support for CFI NOR FLASH
ARM: shmobile: defconfig: Refresh for v5.1-rc1
ARM: multi_v7_defconfig: enable the Amlogic Meson ADC and eFuse drivers
arm64: defconfig: enable fpga and service layer
...
Wire up the mount API syscalls on non-x86 arches.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Fix the syscall numbering of the mount API syscalls so that the numbers
match between i386 and x86_64 and that they're in the common numbering
scheme space.
Fixes: a07b200047 ("vfs: syscall: Add open_tree(2) to reference or clone a mount")
Fixes: 2db154b3ea ("vfs: syscall: Add move_mount(2) to move mounts around")
Fixes: 24dcb3d90a ("vfs: syscall: Add fsopen() to prepare for superblock creation")
Fixes: ecdab150fd ("vfs: syscall: Add fsconfig() for configuring and managing a context")
Fixes: 93766fbd26 ("vfs: syscall: Add fsmount() to create a mount for a superblock")
Fixes: cf3cba4a42 ("vfs: syscall: Add fspick() to select a superblock for reconfiguration")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Make the name of the anon inode fd "[fscontext]" instead of "fscontext".
This is minor but most core-kernel anon inode fds already carry square
brackets around their name:
[eventfd]
[eventpoll]
[fanotify]
[io_uring]
[pidfd]
[signalfd]
[timerfd]
[userfaultfd]
For the sake of consistency lets do the same for the fscontext anon inode
fd that comes with the new mount api.
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Various driver updates for platforms and a couple of the small driver
subsystems we merge through our tree:
Among the larger pieces:
- Power management improvements for TI am335x and am437x (RTC suspend/wake)
- Misc new additions for Amlogic (socinfo updates)
- ZynqMP FPGA manager
- Nvidia improvements for reset/powergate handling
- PMIC wrapper for Mediatek MT8516
- Misc fixes/improvements for ARM SCMI, TEE, NXP i.MX SCU drivers
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC-related driver updates from Olof Johansson:
"Various driver updates for platforms and a couple of the small driver
subsystems we merge through our tree:
Among the larger pieces:
- Power management improvements for TI am335x and am437x (RTC
suspend/wake)
- Misc new additions for Amlogic (socinfo updates)
- ZynqMP FPGA manager
- Nvidia improvements for reset/powergate handling
- PMIC wrapper for Mediatek MT8516
- Misc fixes/improvements for ARM SCMI, TEE, NXP i.MX SCU drivers"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (57 commits)
soc: aspeed: fix Kconfig
soc: add aspeed folder and misc drivers
spi: zynqmp: Fix build break
soc: imx: Add generic i.MX8 SoC driver
MAINTAINERS: Update email for Qualcomm SoC maintainer
memory: tegra: Fix a typos for "fdcdwr2" mc client
Revert "ARM: tegra: Restore memory arbitration on resume from LP1 on Tegra30+"
memory: tegra: Replace readl-writel with mc_readl-mc_writel
memory: tegra: Fix integer overflow on tick value calculation
memory: tegra: Fix missed registers values latching
ARM: tegra: cpuidle: Handle tick broadcasting within cpuidle core on Tegra20/30
optee: allow to work without static shared memory
soc/tegra: pmc: Move powergate initialisation to probe
soc/tegra: pmc: Remove reset sysfs entries on error
soc/tegra: pmc: Fix reset sources and levels
soc: amlogic: meson-gx-pwrc-vpu: Add support for G12A
soc: amlogic: meson-gx-pwrc-vpu: Fix power on/off register bitmask
fpga manager: Adding FPGA Manager support for Xilinx zynqmp
dt-bindings: fpga: Add bindings for ZynqMP fpga driver
firmware: xilinx: Add fpga API's
...
SoC updates, mostly refactorings and cleanups of old legacy platforms.
Major themes this release:
- Conversion of ixp4xx to a modern platform (drivers, DT, bindings)
- Moving some of the ep93xx headers around to get it closer to multiplatform enabled.
- Cleanups of Davinci
This tag also contains a few patches that were queued up as fixes before
5.1 but I didn't get sent in before release.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC platform updates from Olof Johansson:
"SoC updates, mostly refactorings and cleanups of old legacy platforms.
Major themes this release:
- Conversion of ixp4xx to a modern platform (drivers, DT, bindings)
- Moving some of the ep93xx headers around to get it closer to
multiplatform enabled.
- Cleanups of Davinci
This also contains a few patches that were queued up as fixes before
5.1 but I didn't get sent in before release"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (123 commits)
ARM: debug-ll: add default address for digicolor
ARM: u300: regulator: add MODULE_LICENSE()
ARM: ep93xx: move private headers out of mach/*
ARM: ep93xx: move pinctrl interfaces into include/linux/soc
ARM: ep93xx: keypad: stop using mach/platform.h
ARM: ep93xx: move network platform data to separate header
ARM: stm32: add AMBA support for stm32 family
MAINTAINERS: update arch/arm/mach-davinci
ARM: rockchip: add missing of_node_put in rockchip_smp_prepare_pmu
ARM: dts: Add queue manager and NPE to the IXP4xx DTSI
soc: ixp4xx: qmgr: Add DT probe code
soc: ixp4xx: qmgr: Add DT bindings for IXP4xx qmgr
soc: ixp4xx: npe: Add DT probe code
soc: ixp4xx: Add DT bindings for IXP4xx NPE
soc: ixp4xx: qmgr: Pass resources
soc: ixp4xx: Remove unused functions
soc: ixp4xx: Uninline several functions
soc: ixp4xx: npe: Pass addresses as resources
ARM: ixp4xx: Turn the QMGR into a platform device
ARM: ixp4xx: Turn the NPE into a platform device
...
When __afs_break_callback() clears the CB_PROMISED flag, it increments
vnode->cb_break to trigger a future refetch of the status and callback -
however it also calls afs_clear_permits(), which also increments
vnode->cb_break.
Fix this by removing the increment from afs_clear_permits().
Whilst we're at it, fix the conditional call to afs_put_permits() as the
function checks to see if the argument is NULL, so the check is redundant.
Fixes: be080a6f43 ("afs: Overhaul permit caching");
Signed-off-by: David Howells <dhowells@redhat.com>
When applying the status and callback in the response of an operation,
apply them in the same critical section so that there's no race between
checking the callback state and checking status-dependent state (such as
the data version).
Fix this by:
(1) Allocating a joint {status,callback} record (afs_status_cb) before
calling the RPC function for each vnode for which the RPC reply
contains a status or a status plus a callback. A flag is set in the
record to indicate if a callback was actually received.
(2) These records are passed into the RPC functions to be filled in. The
afs_decode_status() and yfs_decode_status() functions are removed and
the cb_lock is no longer taken.
(3) xdr_decode_AFSFetchStatus() and xdr_decode_YFSFetchStatus() no longer
update the vnode.
(4) xdr_decode_AFSCallBack() and xdr_decode_YFSCallBack() no longer update
the vnode.
(5) vnodes, expected data-version numbers and callback break counters
(cb_break) no longer need to be passed to the reply delivery
functions.
Note that, for the moment, the file locking functions still need
access to both the call and the vnode at the same time.
(6) afs_vnode_commit_status() is now given the cb_break value and the
expected data_version and the task of applying the status and the
callback to the vnode are now done here.
This is done under a single taking of vnode->cb_lock.
(7) afs_pages_written_back() is now called by afs_store_data() rather than
by the reply delivery function.
afs_pages_written_back() has been moved to before the call point and
is now given the first and last page numbers rather than a pointer to
the call.
(8) The indicator from YFS.RemoveFile2 as to whether the target file
actually got removed (status.abort_code == VNOVNODE) rather than
merely dropping a link is now checked in afs_unlink rather than in
xdr_decode_YFSFetchStatus().
Supplementary fixes:
(*) afs_cache_permit() now gets the caller_access mask from the
afs_status_cb object rather than picking it out of the vnode's status
record. afs_fetch_status() returns caller_access through its argument
list for this purpose also.
(*) afs_inode_init_from_status() now uses a write lock on cb_lock rather
than a read lock and now sets the callback inside the same critical
section.
Fixes: c435ee3455 ("afs: Overhaul the callback handling")
Signed-off-by: David Howells <dhowells@redhat.com>
__afs_break_callback() holds vnode->lock around its call of
afs_lock_may_be_available() - which also takes that lock.
Fix this by not taking the lock in __afs_break_callback().
Also, there's no point checking the granted_locks and pending_locks queues;
it's sufficient to check lock_state, so move that check out of
afs_lock_may_be_available() into __afs_break_callback() to replace the
queue checks.
Fixes: e8d6c55412 ("AFS: implement file locking")
Signed-off-by: David Howells <dhowells@redhat.com>
Always ask for the reply time from AF_RXRPC as it's used to calculate the
callback expiry time and lock expiry times, so it's needed by most FS
operations.
Signed-off-by: David Howells <dhowells@redhat.com>
Don't invalidate the callback promise on a directory if the
AFS_VNODE_DIR_VALID flag is not set (which indicates that the directory
contents are invalid, due to edit failure, callback break, page reclaim).
The directory will be reloaded next time the directory is accessed, so
clearing the callback flag at this point may race with a reload of the
directory and cancel it's recorded callback promise.
Fixes: f3ddee8dc4 ("afs: Fix directory handling")
Signed-off-by: David Howells <dhowells@redhat.com>
afs_do_lookup() will do an order-1 allocation to allocate status records if
there are more than 39 vnodes to stat.
Fix this by allocating an array of {status,callback} records for each vnode
we want to examine using vmalloc() if larger than a page.
This not only gets rid of the order-1 allocation, but makes it easier to
grow beyond 50 records for YFS servers. It also allows us to move to
{status,callback} tuples for other calls too and makes it easier to lock
across the application of the status and the callback to the vnode.
Fixes: 5cf9dd55a0 ("afs: Prospectively look up extra files when doing a single lookup")
Signed-off-by: David Howells <dhowells@redhat.com>
Fix the calculation of the expiry time of a callback promise, as obtained
from operations like FS.FetchStatus and FS.FetchData.
The time should be based on the timestamp of the first DATA packet in the
reply and the calculation needs to turn the ktime_t timestamp into a
time64_t.
Fixes: c435ee3455 ("afs: Overhaul the callback handling")
Signed-off-by: David Howells <dhowells@redhat.com>
Replace the afs_call::reply[] array with a bunch of typed members so that
the compiler can use type-checking on them. It's also easier for the eye
to see what's going on.
Signed-off-by: David Howells <dhowells@redhat.com>
Don't pass the vnode pointer through into the inline bulk status op. We
want to process the status records outside of it anyway.
Signed-off-by: David Howells <dhowells@redhat.com>
Make certain RPC operations non-interruptible, including:
(*) Set attributes
(*) Store data
We don't want to get interrupted during a flush on close, flush on
unlock, writeback or an inode update, leaving us in a state where we
still need to do the writeback or update.
(*) Extend lock
(*) Release lock
We don't want to get lock extension interrupted as the file locks on
the server are time-limited. Interruption during lock release is less
of an issue since the lock is time-limited, but it's better to
complete the release to avoid a several-minute wait to recover it.
*Setting* the lock isn't a problem if it's interrupted since we can
just return to the user and tell them they were interrupted - at
which point they can elect to retry.
(*) Silly unlink
We want to remove silly unlink files if we can, rather than leaving
them for the salvager to clear up.
Note that whilst these calls are no longer interruptible, they do have
timeouts on them, so if the server stops responding the call will fail with
something like ETIME or ECONNRESET.
Without this, the following:
kAFS: Unexpected error from FS.StoreData -512
appears in dmesg when a pending store data gets interrupted and some
processes may just hang.
Additionally, make the code that checks/updates the server record ignore
failure due to interruption if the main call is uninterruptible and if the
server has an address list. The next op will check it again since the
expiration time on the old list has past.
Fixes: d2ddc776a4 ("afs: Overhaul volume and server record caching and fileserver rotation")
Reported-by: Jonathan Billings <jsbillings@jsbillings.org>
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Allow kernel services using AF_RXRPC to indicate that a call should be
non-interruptible. This allows kafs to make things like lock-extension and
writeback data storage calls non-interruptible.
If this is set, signals will be ignored for operations on that call where
possible - such as waiting to get a call channel on an rxrpc connection.
It doesn't prevent UDP sendmsg from being interrupted, but that will be
handled by packet retransmission.
rxrpc_kernel_recv_data() isn't affected by this since that never waits,
preferring instead to return -EAGAIN and leave the waiting to the caller.
Userspace initiated calls can't be set to be uninterruptible at this time.
Signed-off-by: David Howells <dhowells@redhat.com>
afs_check/update_server_record() should be setting fc->error rather than
fc->ac.error as they're called from within the cursor iteration function.
afs_fs_cursor::error is where the error code of the attempt to call the
operation on multiple servers is integrated and is the final result,
whereas afs_addr_cursor::error is used to hold the error from individual
iterations of the call loop. (Note there's also an afs_vl_cursor which
also wraps afs_addr_cursor for accessing VL servers rather than file
servers).
Fix this by setting fc->error in the afs_check/update_server_record() so
that any error incurred whilst talking to the VL server correctly
propagates to the final result.
This results in:
kAFS: Unexpected error from FS.StoreData -512
being seen, even though the store-data op is non-interruptible. The error
is actually coming from the server record update getting interrupted.
Fixes: d2ddc776a4 ("afs: Overhaul volume and server record caching and fileserver rotation")
Signed-off-by: David Howells <dhowells@redhat.com>
If an older AFS server doesn't support an operation, it may accept the call
and then sit on it forever, happily responding to pings that make kafs
think that the call is still alive.
Fix this by setting the maximum lifespan of Volume Location service calls
in particular and probe calls in general so that they don't run on
endlessly if they're not supported.
Signed-off-by: David Howells <dhowells@redhat.com>
Pull thermal soc updates from Eduardo Valentin:
- thermal core has a new devm_* API for registering cooling devices. I
took the entire series, that is why you see changes on drivers/hwmon
in this pull (Guenter Roeck)
- rockchip thermal driver gains support to PX30 SoC (Elaine Zhang)
- the generic-adc thermal driver now considers the lookup table DT
property as optional (Jean-Francois Dagenais)
- Refactoring of tsens thermal driver (Amit Kucheria)
- Cleanups on cpu cooling driver (Daniel Lezcano)
- broadcom thermal driver dropped support to ACPI (Srinath Mannam)
- tegra thermal driver gains support to OC hw throttle and GPU throtle
(Wei Ni)
- Fixes in several thermal drivers.
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal: (59 commits)
hwmon: (pwm-fan) Use devm_thermal_of_cooling_device_register
hwmon: (npcm750-pwm-fan) Use devm_thermal_of_cooling_device_register
hwmon: (mlxreg-fan) Use devm_thermal_of_cooling_device_register
hwmon: (gpio-fan) Use devm_thermal_of_cooling_device_register
hwmon: (aspeed-pwm-tacho) Use devm_thermal_of_cooling_device_register
thermal: rcar_gen3_thermal: Fix to show correct trip points number
thermal: rcar_thermal: update calculation formula for R-Car Gen3 SoCs
thermal: cpu_cooling: Actually trace CPU load in thermal_power_cpu_get_power
thermal: rockchip: Support the PX30 SoC in thermal driver
dt-bindings: rockchip-thermal: Support the PX30 SoC compatible
thermal: rockchip: fix up the tsadc pinctrl setting error
thermal: broadcom: Remove ACPI support
thermal: Fix build error of missing devm_ioremap_resource on UM
thermal/drivers/cpu_cooling: Remove pointless field
thermal/drivers/cpu_cooling: Add Software Package Data Exchange (SPDX)
thermal/drivers/cpu_cooling: Fixup the header and copyright
thermal/drivers/cpu_cooling: Remove pointless test in power2state()
thermal: rcar_gen3_thermal: disable interrupt in .remove
thermal: rcar_gen3_thermal: fix interrupt type
thermal: Introduce devm_thermal_of_cooling_device_register
...
Use the new struct_size() helper to keep code simple.
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Provide an interface to set max lifespan on a call from inside of the
kernel without having to call kernel_sendmsg().
Signed-off-by: David Howells <dhowells@redhat.com>
Under some circumstances afs_select_fileserver() can return without setting
an error in fc->error. The problem is in the no_more_servers segment where
the accumulated errors from attempts to contact various servers are
integrated into an afs_error-type variable 'e'. The resultant error code
is, however, then abandoned.
Fix this by getting the error out of e.error and putting it in 'error' so
that the next part will store it into fc->error.
Not doing this causes a report like the following:
kAFS: AFS vnode with undefined type 0
kAFS: A=0 m=0 s=0 v=0
kAFS: vnode 20000025:1:1
because the code following the server selection loop then sees what it
thinks is a successful invocation because fc.error is 0. However, it can't
apply the status record because it's all zeros.
The report is followed on the first instance with a trace looking something
like:
dump_stack+0x67/0x8e
afs_inode_init_from_status.isra.2+0x21b/0x487
afs_fetch_status+0x119/0x1df
afs_iget+0x130/0x295
afs_get_tree+0x31d/0x595
vfs_get_tree+0x1f/0xe8
fc_mount+0xe/0x36
afs_d_automount+0x328/0x3c3
follow_managed+0x109/0x20a
lookup_fast+0x3bf/0x3f8
do_last+0xc3/0x6a4
path_openat+0x1af/0x236
do_filp_open+0x51/0xae
? _raw_spin_unlock+0x24/0x2d
? __alloc_fd+0x1a5/0x1b7
do_sys_open+0x13b/0x1e8
do_syscall_64+0x7d/0x1b3
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Fixes: 4584ae96ae ("afs: Fix missing net error handling")
Signed-off-by: David Howells <dhowells@redhat.com>
We call get_region_id() without validating the ea value. That means
with a wrong ea value we hit the BUG as below.
kernel BUG at arch/powerpc/include/asm/book3s/64/hash.h:129!
Oops: Exception in kernel mode, sig: 5 [#1]
LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries
CPU: 0 PID: 3937 Comm: access_tests Not tainted 5.1.0
....
NIP [c00000000007ba20] do_slb_fault+0x70/0x320
LR [c00000000000896c] data_access_slb_common+0x15c/0x1a0
Fix this by removing the VM_BUG_ON. All callers make sure the returned
region id is valid and error out otherwise.
Fixes: 0034d395f8 ("powerpc/mm/hash64: Map all the kernel regions in the same 0xc range")
Reported-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Merge tag 'drm-next-2019-05-16' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"A bunch of fixes for the merge window closure, doesn't seem to be
anything too major or serious in there.
It does add TU117 turing modesetting to nouveau but it's just an
enable for preexisting code.
amdgpu:
- gpu reset at load crash fix
- ATPX hotplug fix for when dGPU is off
- SR-IOV fixes
radeon:
- r5xx pll fixes
i915:
- GVT (MCHBAR, buffer alignment, misc warnings fixes)
- Fixes for newly enabled semaphore code
- Geminilake disable framebuffer compression
- HSW edp fast modeset fix
- IRQ vs RCU race fix
nouveau:
- Turing modesetting fixes
- TU117 support
msm:
- SDM845 bringup fixes
panfrost:
- static checker fixes
pl111:
- spinlock init fix.
bridge:
- refresh rate register fix for adv7511"
* tag 'drm-next-2019-05-16' of git://anongit.freedesktop.org/drm/drm: (36 commits)
drm/msm: Upgrade gxpd checks to IS_ERR_OR_NULL
drm/msm/dpu: Remove duplicate header
drm/pl111: Initialize clock spinlock early
drm/msm: correct attempted NULL pointer dereference in debugfs
drm/msm: remove resv fields from msm_gem_object struct
drm/nouveau: fix duplication of nv50_head_atom struct
drm/nouveau/disp/dp: respect sink limits when selecting failsafe link configuration
drm/nouveau/core: initial support for boards with TU117 chipset
drm/nouveau/core: allow detected chipset to be overridden
drm/nouveau/kms/gf119-gp10x: push HeadSetControlOutputResource() mthd when encoders change
drm/nouveau/kms/nv50-: fix bug preventing non-vsync'd page flips
drm/nouveau/kms/gv100-: fix spurious window immediate interlocks
drm/bridge: adv7511: Fix low refresh rate selection
drm/panfrost: Add missing _fini() calls in panfrost_device_fini()
drm/panfrost: Only put sync_out if non-NULL
drm/i915: Seal races between async GPU cancellation, retirement and signaling
drm/i915: Fix fastset vs. pfit on/off on HSW EDP transcoder
drm/i915/fbc: disable framebuffer compression on GeminiLake
drm/amdgpu/psp: move psp version specific function pointers to early_init
drm/radeon: prefer lower reference dividers
...
The previous patch has ensured that io_cqring_events contain
smp_rmb memory barriers, Now we can use wait_event_interruptible
to keep the code simple.
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Whenever smp_rmb is required to use io_cqring_events,
keep smp_rmb inside the function io_cqring_events.
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This fixes couple of races which lead to infinite wait of park completion
with the following backtraces:
[20801.303319] Call Trace:
[20801.303321] ? __schedule+0x284/0x650
[20801.303323] schedule+0x33/0xc0
[20801.303324] schedule_timeout+0x1bc/0x210
[20801.303326] ? schedule+0x3d/0xc0
[20801.303327] ? schedule_timeout+0x1bc/0x210
[20801.303329] ? preempt_count_add+0x79/0xb0
[20801.303330] wait_for_completion+0xa5/0x120
[20801.303331] ? wake_up_q+0x70/0x70
[20801.303333] kthread_park+0x48/0x80
[20801.303335] io_finish_async+0x2c/0x70
[20801.303336] io_ring_ctx_wait_and_kill+0x95/0x180
[20801.303338] io_uring_release+0x1c/0x20
[20801.303339] __fput+0xad/0x210
[20801.303341] task_work_run+0x8f/0xb0
[20801.303342] exit_to_usermode_loop+0xa0/0xb0
[20801.303343] do_syscall_64+0xe0/0x100
[20801.303349] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[20801.303380] Call Trace:
[20801.303383] ? __schedule+0x284/0x650
[20801.303384] schedule+0x33/0xc0
[20801.303386] io_sq_thread+0x38a/0x410
[20801.303388] ? __switch_to_asm+0x40/0x70
[20801.303390] ? wait_woken+0x80/0x80
[20801.303392] ? _raw_spin_lock_irqsave+0x17/0x40
[20801.303394] ? io_submit_sqes+0x120/0x120
[20801.303395] kthread+0x112/0x130
[20801.303396] ? kthread_create_on_node+0x60/0x60
[20801.303398] ret_from_fork+0x35/0x40
o kthread_park() waits for park completion, so io_sq_thread() loop
should check kthread_should_park() along with khread_should_stop(),
otherwise if kthread_park() is called before prepare_to_wait()
the following schedule() never returns:
CPU#0 CPU#1
io_sq_thread_stop(): io_sq_thread():
while(!kthread_should_stop() && !ctx->sqo_stop) {
ctx->sqo_stop = 1;
kthread_park()
prepare_to_wait();
if (kthread_should_stop() {
}
schedule(); <<< nobody checks park flag,
<<< so schedule and never return
o if the flag ctx->sqo_stop is observed by the io_sq_thread() loop
it is quite possible, that kthread_should_park() check and the
following kthread_parkme() is never called, because kthread_park()
has not been yet called, but few moments later is is called and
waits there for park completion, which never happens, because
kthread has already exited:
CPU#0 CPU#1
io_sq_thread_stop(): io_sq_thread():
ctx->sqo_stop = 1;
while(!kthread_should_stop() && !ctx->sqo_stop) {
<<< observe sqo_stop and exit the loop
}
if (kthread_should_park())
kthread_parkme(); <<< never called, since was
<<< never parked
kthread_park() <<< waits forever for park completion
In the current patch we quit the loop by only kthread_should_park()
check (kthread_park() is synchronous, so kthread_should_stop() is
never observed), and we abandon ->sqo_stop flag, since it is racy.
At the end of the io_sq_thread() we unconditionally call parmke(),
since we've exited the loop by the park flag.
Signed-off-by: Roman Penyaev <rpenyaev@suse.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This message should better identify the DM device with the integrity
failure.
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
The information about tag size should not be printed without debug info
set. Also print device major:minor in the error message to identify the
device instance.
Also use rate limiting and debug level for info about used crypto API
implementaton. This is important because during online reencryption
the existing message saturates syslog (because we are moving hotzone
across the whole device).
Cc: stable@vger.kernel.org
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Pull NVMe fixes from Christoph
* 'nvme-5.2' of git://git.infradead.org/nvme:
nvme: validate cntlid during controller initialisation
nvme: change locking for the per-subsystem controller list
nvme: trace all async notice events
nvme: fix typos in nvme status code values
nvme-fabrics: remove unused argument
nvme-multipath: avoid crash on invalid subsystem cntlid enumeration
nvme-fc: use separate work queue to avoid warning
nvme-rdma: remove redundant reference between ib_device and tagset
nvme-pci: mark expected switch fall-through
nvme-pci: add known admin effects to augument admin effects log page
nvme-pci: init shadow doorbell after each reset
The dm_early_create() function (which deals with "dm-mod.create=" kernel
command line option) calls dm_hash_insert() who gets an extra reference
to the md object.
In case of failure, this reference wasn't being released, causing
dm_destroy() to hang, thus hanging the whole boot process.
Fix this by calling __hash_remove() in the error path.
Fixes: 6bbc923dfc ("dm: add support to directly boot to a mapped device")
Cc: stable@vger.kernel.org
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Currently, once configured, AFS cells are looked up in the DNS at regular
intervals - which is a waste of resources if those cells aren't being
used. It also leads to a problem where cells preloaded, but not
configured, before the network is brought up end up effectively statically
configured with no VL servers and are unable to get any.
Fix this by not doing the DNS lookup until the first time a cell is
touched. It is waited for if we don't have any cached records yet,
otherwise the DNS lookup to maintain the record is done in the background.
This has the downside that the first time you touch a cell, you now have to
wait for the upcall to do the required DNS lookups rather than them already
being cached.
Further, the record is not replaced if the old record has at least one
server in it and the new record doesn't have any.
Fixes: 0a5143f2f8 ("afs: Implement VL server rotation")
Signed-off-by: David Howells <dhowells@redhat.com>
clock_getres in the vDSO library has to preserve the same behaviour
of posix_get_hrtimer_res().
In particular, posix_get_hrtimer_res() does:
sec = 0;
ns = hrtimer_resolution;
and hrtimer_resolution depends on the enablement of the high
resolution timers that can happen either at compile or at run time.
Fix the nds32 vdso implementation of clock_getres keeping a copy of
hrtimer_resolution in vdso data and using that directly.
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
On x86_64, all returns to usermode go through
prepare_exit_to_usermode(), with the sole exception of do_nmi().
This even includes machine checks -- this was added several years
ago to support MCE recovery. Update the documentation.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jon Masters <jcm@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Fixes: 04dcbdb805 ("x86/speculation/mds: Clear CPU buffers on exit to user")
Link: http://lkml.kernel.org/r/999fa9e126ba6a48e9d214d2f18dbde5c62ac55c.1557865329.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The double fault ESPFIX path doesn't return to user mode at all --
it returns back to the kernel by simulating a #GP fault.
prepare_exit_to_usermode() will run on the way out of
general_protection before running user code.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jon Masters <jcm@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Fixes: 04dcbdb805 ("x86/speculation/mds: Clear CPU buffers on exit to user")
Link: http://lkml.kernel.org/r/ac97612445c0a44ee10374f6ea79c222fe22a5c4.1557865329.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
None of these is used by modules. Nor should they as we have better
highlevel primitives.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
Merge in a few pending fixes from pre-5.1 that didn't get sent in:
MAINTAINERS: update arch/arm/mach-davinci
ARM: dts: ls1021: Fix SGMII PCS link remaining down after PHY disconnect
ARM: dts: imx6q-logicpd: Reduce inrush current on USBH1
ARM: dts: imx6q-logicpd: Reduce inrush current on start
ARM: dts: imx: Fix the AR803X phy-mode
ARM: dts: sun8i: a33: Reintroduce default pinctrl muxing
arm64: dts: allwinner: a64: Rename hpvcc-supply to cpvdd-supply
ARM: sunxi: fix a leaked reference by adding missing of_node_put
ARM: sunxi: fix a leaked reference by adding missing of_node_put
Signed-off-by: Olof Johansson <olof@lixom.net>
Add llseek op for SEEK_DATA and SEEK_HOLE.
Improves xfstests/285,286,436,445,448 and 490
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Copychunk allows source and target to be on the same file.
For details on restrictions see MS-SMB2 3.3.5.15.6
Signed-off-by: Kovtunenko Oleksandr <alexander198961@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
An IOCTL uses up to 2 iovs. The 1st iov is the command itself, the 2nd iov is
optional data for that command. The 1st iov is always allocated on the heap
but the 2nd iov may point to a variable on the stack. This will trigger an
error when passing the 2nd iov for RDMA I/O.
Fix this by allocating a buffer for the 2nd iov.
Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie sahlberg <lsahlber@redhat.com>
SMBDirect manages its own ports in the transport layer, there is no need to
check the port to find a connection.
Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie sahlberg <lsahlber@redhat.com>
* Fix a long standing namespace label corruption scenario when
re-provisioning capacity for a namespace.
* Restore the ability of the dax_pmem module to be built-in.
* Harden the build for the 'nfit_test' unit test modules so that the
userspace test harness can ensure all required test modules are
available.
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Merge tag 'libnvdimm-fixes-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"Just a small collection of fixes this time around.
The new virtio-pmem driver is nearly ready, but some last minute
device-mapper acks and virtio questions made it prudent to await v5.3.
Other major topics that were brewing on the linux-nvdimm mailing list
like sub-section hotplug, and other devm_memremap_pages() reworks will
go upstream through Andrew's tree.
Summary:
- Fix a long standing namespace label corruption scenario when
re-provisioning capacity for a namespace.
- Restore the ability of the dax_pmem module to be built-in.
- Harden the build for the 'nfit_test' unit test modules so that the
userspace test harness can ensure all required test modules are
available"
* tag 'libnvdimm-fixes-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
drivers/dax: Allow to include DEV_DAX_PMEM as builtin
libnvdimm/namespace: Fix label tracking error
tools/testing/nvdimm: add watermarks for dax_pmem* modules
dax/pmem: Fix whitespace in dax_pmem
Core:
* Add over-current health state
* Add standard, adaptive and custom charge types
* Add new properties for start/end charge threshold
New Drivers / Hardware:
* UCS1002 Programmable USB Port Power Controller
* Ingenic JZ47xx Battery Fuel Gauge
* AXP20x USB Power: Add AXP813 support
* AT91 poweroff: Add SAM9X60 support
* OLPC battery: Add XO-1.5 and XO-1.75 support
Misc. Changes:
* syscon-reboot: support mask property
* AXP288 fuel gauge: Blacklist ACEPC T8/T11
- Looks like some vendor thought it's a good idea to
build a desktop system with a fuel gauge, that slowly
"discharges"...
* cpcap-battery: Fix calculation errors
* misc. fixes
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Merge tag 'for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
"Core:
- Add over-current health state
- Add standard, adaptive and custom charge types
- Add new properties for start/end charge threshold
New Drivers / Hardware:
- UCS1002 Programmable USB Port Power Controller
- Ingenic JZ47xx Battery Fuel Gauge
- AXP20x USB Power: Add AXP813 support
- AT91 poweroff: Add SAM9X60 support
- OLPC battery: Add XO-1.5 and XO-1.75 support
Misc Changes:
- syscon-reboot: support mask property
- AXP288 fuel gauge: Blacklist ACEPC T8/T11. Looks like some vendor
thought it's a good idea to build a desktop system with a fuel
gauge, that slowly "discharges"...
- cpcap-battery: Fix calculation errors
- misc fixes"
* tag 'for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (54 commits)
power: supply: olpc_battery: force the le/be casts
power: supply: ucs1002: Fix build error without CONFIG_REGULATOR
power: supply: ucs1002: Fix wrong return value checking
power: supply: Add driver for Microchip UCS1002
dt-bindings: power: supply: Add bindings for Microchip UCS1002
power: supply: core: Add POWER_SUPPLY_HEALTH_OVERCURRENT constant
power: supply: core: fix clang -Wunsequenced
power: supply: core: Add missing documentation for CHARGE_CONTROL_* properties
power: supply: core: Add CHARGE_CONTROL_{START_THRESHOLD,END_THRESHOLD} properties
power: supply: core: Add Standard, Adaptive, and Custom charge types
power: supply: axp288_fuel_gauge: Add ACEPC T8 and T11 mini PCs to the blacklist
power: supply: bq27xxx_battery: Notify also about status changes
power: supply: olpc_battery: Have the framework register sysfs files for us
power: supply: olpc_battery: Add OLPC XO 1.75 support
power: supply: olpc_battery: Avoid using platform_info
power: supply: olpc_battery: Use devm_power_supply_register()
power: supply: olpc_battery: Move priv data to a struct
power: supply: olpc_battery: Use DT to get battery version
x86/platform/olpc: Use a correct version when making up a battery node
x86/platform/olpc: Trivial code move in DT fixup
...
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Merge tag 'for-linus-5.2b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross:
- some minor cleanups
- two small corrections for Xen on ARM
- two fixes for Xen PVH guest support
- a patch for a new command line option to tune virtual timer handling
* tag 'for-linus-5.2b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/arm: Use p2m entry with lock protection
xen/arm: Free p2m entry if fail to add it to RB tree
xen/pvh: correctly setup the PV EFI interface for dom0
xen/pvh: set xen_domain_type to HVM in xen_pvh_init
xenbus: drop useless LIST_HEAD in xenbus_write_watch() and xenbus_file_write()
xen-netfront: mark expected switch fall-through
xen: xen-pciback: fix warning Using plain integer as NULL pointer
x86/xen: Add "xen_timer_slop" command line option
