Add mount-matrix binding support. As chip could have different orientations
a mount matrix support is needed to correctly translate these differences.
Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add vdd-supply and vddio-supply support.
While working on an msm8916 device and having explicit declarations for
regulators, without setting these regulators to regulators-always-on it
happened those lines weren't ready because they could have been controlled
by other components, causing failure in module's probe.
This patch aim is to solve this situation by adding regulators control
during bmi160_chip_init() and bmi160_chip_uninit(), assuring power to
this component.
Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Fix a typo in MODULE_AUTHOR() argument.
Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
EC does not currently preserve range across sensor reinit.
If sensor is powered down at suspend, it will default to the EC default
range at resume, not the range set by the host.
Save range if modified, and apply at resume.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The mxc6655 is fully working with the existing mxc4005 driver.
Add support for it.
Signed-off-by: Christian Oder <me@myself5.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
mmc35240_reg_defaults is not modified and can be made const to allow the
compiler to put it in read-only memory.
Before:
text data bss dec hex filename
9759 3288 128 13175 3377 drivers/iio/magnetometer/mmc35240.o
After:
text data bss dec hex filename
9823 3224 128 13175 3377 drivers/iio/magnetometer/mmc35240.o
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
stk3310_regmap_config is not modified and can be made const to allow the
compiler to put it in read-only memory.
Before:
text data bss dec hex filename
16027 5424 128 21579 544b drivers/iio/light/stk3310.o
After:
text data bss dec hex filename
16347 5104 128 21579 544b drivers/iio/light/stk3310.o
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
ad5592r_ext_info is not modified and can be made const to allow the
compiler to put it in read-only memory.
Before:
text data bss dec hex filename
13293 2088 256 15637 3d15 drivers/iio/dac/ad5592r-base.o
After:
text data bss dec hex filename
13421 1960 256 15637 3d15 drivers/iio/dac/ad5592r-base.o
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Acked-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
ad5380_ext_info is not modified and can be made const to allow the
compiler to put it in read-only memory.
Before:
text data bss dec hex filename
12060 3280 192 15532 3cac drivers/iio/dac/ad5380.o
After:
text data bss dec hex filename
12252 3088 192 15532 3cac drivers/iio/dac/ad5380.o
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Acked-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
max11100_channels is not modified and can therefore be made const to
allow the compiler to put it in read-only memory.
Before:
text data bss dec hex filename
3776 1168 0 4944 1350 drivers/iio/adc/max11100.o
After:
text data bss dec hex filename
3968 976 0 4944 1350 drivers/iio/adc/max11100.o
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
acpi_dev_get_resources() does perform the NULL pointer check against
ACPI companion device which is given as function parameter. Thus,
there is no need to duplicate this check in the caller.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
According to AK09911 datasheet, if reset gpio is provided then
deassert reset on ak8975_power_on() and assert reset on ak8975_power_off().
Without reset's deassertion during ak8975_power_on(), driver's probe fails
on ak8975_who_i_am() while checking for device identity for AK09911 chip.
AK09911 has an active low reset gpio to handle register's reset.
AK09911 datasheet says that, if not used, reset pin should be connected
to VID. This patch emulates this situation.
Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Minor comment style edits.
Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add reset-gpio support.
Without reset's deassertion during ak8975_power_on(), driver's probe fails
on ak8975_who_i_am() while checking for device identity for AK09911 chip.
AK09911 has an active low reset gpio to handle register's reset.
AK09911 datasheet says that, if not used, reset pin should be connected
to VID. This patch emulates this situation.
Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Converts documentation from txt format to yaml.
Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reword gpios documentation, add interrupt documentation and fix styles.
Update example to use interrupts instead of gpios.
Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Change pr_err/pr_debug statements to dev_err/dev_dbg for
increased clarity.
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Clean up some return value checks to make code more compact.
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The ADC architecture on PMIC7 is changed as compared to PMIC5. The
major change from PMIC5 is that all SW communication to ADC goes through
PMK8350, which communicates with other PMICs through PBS when the ADC
on PMK8350 works in master mode. The SID register is used to identify the
PMICs with which the PBS needs to communicate. Add support for the same.
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add info property under adc_data to support adding ADC variants
which may use different iio_info than the one defined for PMIC5.
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add documentation for PMIC7 ADC peripheral.
For the PMIC7-type PMICs, ADC peripheral is present in HW for the
following PMICs: PMK8350, PM8350, PM8350b, PMR735a and PMR735b.
Of these, only the ADC peripheral on PMK8350 is exposed directly to SW.
If SW needs to communicate with ADCs on other PMICs, it specifies the
PMIC to PMK8350 through the newly added SID register and communication
between PMK8350 ADC and other PMIC ADCs is carried out through
PBS(Programmable Boot Sequence) at the firmware level.
In addition, add definitions for ADC channels and virtual channel
definitions (combination of ADC channel number and PMIC SID number)
per PMIC, to be used by ADC clients for PMIC7.
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Convert the adc bindings from .txt to .yaml format.
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add basic support for the Bosch Sensortec BMA400 3-axes ultra-low power
accelerometer when configured to use SPI.
Signed-off-by: Dan Robertson <dan@dlrobertson.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Move ret variable to the IIO_CHAN_INFO_RAW switch since currently
only used within that scope.
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
We may want to get rid of the iio_priv_to_dev() helper. That's a bit
uncertain at this point. The reason is that we will hide some of the
members of the iio_dev structure (to prevent drivers from accessing them
directly), and that will also mean hiding the implementation of the
iio_priv_to_dev() helper inside the IIO core.
Hiding the implementation of iio_priv_to_dev() implies that some fast-paths
may not be fast anymore, so a general idea is to try to get rid of the
iio_priv_to_dev() altogether.
For this driver, removing the iio_priv_to_dev() helper means passing the
iio_dev object on hts221_allocate_buffers() & hts221_allocate_trigger().
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
We may want to get rid of the iio_priv_to_dev() helper. That's a bit
uncertain at this point. The reason is that we will hide some of the
members of the iio_dev structure (to prevent drivers from accessing them
directly), and that will also mean hiding the implementation of the
iio_priv_to_dev() helper inside the IIO core.
Hiding the implementation of iio_priv_to_dev() implies that some fast-paths
may not be fast anymore, so a general idea is to try to get rid of the
iio_priv_to_dev() altogether.
For this driver, removing iio_priv_to_dev() also means keeping a reference
on the state struct.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Acked-by: Jeff LaBundy <jeff@labundy.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
We may want to get rid of the iio_priv_to_dev() helper. That's a bit
uncertain at this point. The reason is that we will hide some of the
members of the iio_dev structure (to prevent drivers from accessing them
directly), and that will also mean hiding the implementation of the
iio_priv_to_dev() helper inside the IIO core.
Hiding the implementation of iio_priv_to_dev() implies that some fast-paths
may not be fast anymore, so a general idea is to try to get rid of the
iio_priv_to_dev() altogether.
For this driver, removing iio_priv_to_dev() means keeping a reference
on the state struct.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Acked-by: Jeff LaBundy <jeff@labundy.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
We may want to get rid of the iio_priv_to_dev() helper. That's a bit
uncertain at this point. The reason is that we will hide some of the
members of the iio_dev structure (to prevent drivers from accessing them
directly), and that will also mean hiding the implementation of the
iio_priv_to_dev() helper inside the IIO core.
Hiding the implementation of iio_priv_to_dev() implies that some fast-paths
may not be fast anymore, so a general idea is to try to get rid of the
iio_priv_to_dev() altogether.
For this driver, it implies passing the IIO device on the i2c client
private data. The implementation of iio_priv() will not be affected by the
rework/hiding of iio_priv_to_dev().
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
KCSAN is a dynamic race detector, which relies on compile-time
instrumentation, and uses a watchpoint-based sampling approach to detect
races.
The feature was under development for quite some time and has already found
legitimate bugs.
Unfortunately it comes with a limitation, which was only understood late in
the development cycle:
It requires an up to date CLANG-11 compiler
CLANG-11 is not yet released (scheduled for June), but it's the only
compiler today which handles the kernel requirements and especially the
annotations of functions to exclude them from KCSAN instrumentation
correctly.
These annotations really need to work so that low level entry code and
especially int3 text poke handling can be completely isolated.
A detailed discussion of the requirements and compiler issues can be found
here:
https://lore.kernel.org/lkml/CANpmjNMTsY_8241bS7=XAfqvZHFLrVEkv_uM4aDUWE_kh3Rvbw@mail.gmail.com/
We came to the conclusion that trying to work around compiler limitations
and bugs again would end up in a major trainwreck, so requiring a working
compiler seemed to be the best choice.
For Continous Integration purposes the compiler restriction is manageable
and that's where most xxSAN reports come from.
For a change this limitation might make GCC people actually look at their
bugs. Some issues with CSAN in GCC are 7 years old and one has been 'fixed'
3 years ago with a half baken solution which 'solved' the reported issue
but not the underlying problem.
The KCSAN developers also ponder to use a GCC plugin to become independent,
but that's not something which will show up in a few days.
Blocking KCSAN until wide spread compiler support is available is not a
really good alternative because the continuous growth of lockless
optimizations in the kernel demands proper tooling support.
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Merge tag 'locking-kcsan-2020-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull the Kernel Concurrency Sanitizer from Thomas Gleixner:
"The Kernel Concurrency Sanitizer (KCSAN) is a dynamic race detector,
which relies on compile-time instrumentation, and uses a
watchpoint-based sampling approach to detect races.
The feature was under development for quite some time and has already
found legitimate bugs.
Unfortunately it comes with a limitation, which was only understood
late in the development cycle:
It requires an up to date CLANG-11 compiler
CLANG-11 is not yet released (scheduled for June), but it's the only
compiler today which handles the kernel requirements and especially
the annotations of functions to exclude them from KCSAN
instrumentation correctly.
These annotations really need to work so that low level entry code and
especially int3 text poke handling can be completely isolated.
A detailed discussion of the requirements and compiler issues can be
found here:
https://lore.kernel.org/lkml/CANpmjNMTsY_8241bS7=XAfqvZHFLrVEkv_uM4aDUWE_kh3Rvbw@mail.gmail.com/
We came to the conclusion that trying to work around compiler
limitations and bugs again would end up in a major trainwreck, so
requiring a working compiler seemed to be the best choice.
For Continous Integration purposes the compiler restriction is
manageable and that's where most xxSAN reports come from.
For a change this limitation might make GCC people actually look at
their bugs. Some issues with CSAN in GCC are 7 years old and one has
been 'fixed' 3 years ago with a half baken solution which 'solved' the
reported issue but not the underlying problem.
The KCSAN developers also ponder to use a GCC plugin to become
independent, but that's not something which will show up in a few
days.
Blocking KCSAN until wide spread compiler support is available is not
a really good alternative because the continuous growth of lockless
optimizations in the kernel demands proper tooling support"
* tag 'locking-kcsan-2020-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (76 commits)
compiler_types.h, kasan: Use __SANITIZE_ADDRESS__ instead of CONFIG_KASAN to decide inlining
compiler.h: Move function attributes to compiler_types.h
compiler.h: Avoid nested statement expression in data_race()
compiler.h: Remove data_race() and unnecessary checks from {READ,WRITE}_ONCE()
kcsan: Update Documentation to change supported compilers
kcsan: Remove 'noinline' from __no_kcsan_or_inline
kcsan: Pass option tsan-instrument-read-before-write to Clang
kcsan: Support distinguishing volatile accesses
kcsan: Restrict supported compilers
kcsan: Avoid inserting __tsan_func_entry/exit if possible
ubsan, kcsan: Don't combine sanitizer with kcov on clang
objtool, kcsan: Add kcsan_disable_current() and kcsan_enable_current_nowarn()
kcsan: Add __kcsan_{enable,disable}_current() variants
checkpatch: Warn about data_race() without comment
kcsan: Use GFP_ATOMIC under spin lock
Improve KCSAN documentation a bit
kcsan: Make reporting aware of KCSAN tests
kcsan: Fix function matching in report
kcsan: Change data_race() to no longer require marking racing accesses
kcsan: Move kcsan_{disable,enable}_current() to kcsan-checks.h
...
1) Compilers uninline small atomic_* static inline functions which can
expose them to instrumentation.
2) The instrumentation of atomic primitives was done at the architecture
level while composites or fallbacks were provided at the generic level.
As a result there are no uninstrumented variants of the fallbacks.
Both issues were in the way of fully isolating fragile entry code pathes
and especially the text poke int3 handler which is prone to an endless
recursion problem when anything in that code path is about to be
instrumented. This was always a problem, but got elevated due to the new
batch mode updates of tracing.
The solution is to mark the functions __always_inline and to flip the
fallback and instrumentation so the non-instrumented variants are at the
architecture level and the instrumentation is done in generic code.
The latter introduces another fallback variant which will go away once all
architectures have been moved over to arch_atomic_*.
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Merge tag 'locking-urgent-2020-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull atomics rework from Thomas Gleixner:
"Peter Zijlstras rework of atomics and fallbacks. This solves two
problems:
1) Compilers uninline small atomic_* static inline functions which
can expose them to instrumentation.
2) The instrumentation of atomic primitives was done at the
architecture level while composites or fallbacks were provided at
the generic level. As a result there are no uninstrumented
variants of the fallbacks.
Both issues were in the way of fully isolating fragile entry code
pathes and especially the text poke int3 handler which is prone to an
endless recursion problem when anything in that code path is about to
be instrumented. This was always a problem, but got elevated due to
the new batch mode updates of tracing.
The solution is to mark the functions __always_inline and to flip the
fallback and instrumentation so the non-instrumented variants are at
the architecture level and the instrumentation is done in generic
code.
The latter introduces another fallback variant which will go away once
all architectures have been moved over to arch_atomic_*"
* tag 'locking-urgent-2020-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/atomics: Flip fallbacks and instrumentation
asm-generic/atomic: Use __always_inline for fallback wrappers
Pull updates from Andrew Morton:
"A few fixes and stragglers.
Subsystems affected by this patch series: mm/memory-failure, ocfs2,
lib/lzo, misc"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
amdgpu: a NULL ->mm does not mean a thread is a kthread
lib/lzo: fix ambiguous encoding bug in lzo-rle
ocfs2: fix build failure when TCP/IP is disabled
mm/memory-failure: send SIGBUS(BUS_MCEERR_AR) only to current thread
mm/memory-failure: prioritize prctl(PR_MCE_KILL) over vm.memory_failure_early_kill
In some rare cases, for input data over 32 KB, lzo-rle could encode two
different inputs to the same compressed representation, so that
decompression is then ambiguous (i.e. data may be corrupted - although
zram is not affected because it operates over 4 KB pages).
This modifies the compressor without changing the decompressor or the
bitstream format, such that:
- there is no change to how data produced by the old compressor is
decompressed
- an old decompressor will correctly decode data from the updated
compressor
- performance and compression ratio are not affected
- we avoid introducing a new bitstream format
In testing over 12.8M real-world files totalling 903 GB, three files
were affected by this bug. I also constructed 37M semi-random 64 KB
files totalling 2.27 TB, and saw no affected files. Finally I tested
over files constructed to contain each of the ~1024 possible bad input
sequences; for all of these cases, updated lzo-rle worked correctly.
There is no significant impact to performance or compression ratio.
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Dave Rodgman <dave.rodgman@arm.com>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Markus F.X.J. Oberhumer <markus@oberhumer.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Chao Yu <yuchao0@huawei.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200507100203.29785-1-dave.rodgman@arm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
After commit 12abc5ee78 ("tcp: add tcp_sock_set_nodelay") and commit
c488aeadcb ("tcp: add tcp_sock_set_user_timeout"), building the kernel
with OCFS2_FS=y but without INET=y causes it to fail with:
ld: fs/ocfs2/cluster/tcp.o: in function `o2net_accept_many':
tcp.c:(.text+0x21b1): undefined reference to `tcp_sock_set_nodelay'
ld: tcp.c:(.text+0x21c1): undefined reference to `tcp_sock_set_user_timeout'
ld: fs/ocfs2/cluster/tcp.o: in function `o2net_start_connect':
tcp.c:(.text+0x2633): undefined reference to `tcp_sock_set_nodelay'
ld: tcp.c:(.text+0x2643): undefined reference to `tcp_sock_set_user_timeout'
This is due to tcp_sock_set_nodelay() and tcp_sock_set_user_timeout()
being declared in linux/tcp.h and defined in net/ipv4/tcp.c, which
depend on TCP/IP being enabled.
To fix this, make OCFS2_FS depend on INET=y which already requires
NET=y.
Fixes: 12abc5ee78 ("tcp: add tcp_sock_set_nodelay")
Fixes: c488aeadcb ("tcp: add tcp_sock_set_user_timeout")
Signed-off-by: Tom Seewald <tseewald@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Link: http://lkml.kernel.org/r/20200606190827.23954-1-tseewald@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Action Required memory error should happen only when a processor is
about to access to a corrupted memory, so it's synchronous and only
affects current process/thread.
Recently commit 872e9a205c ("mm, memory_failure: don't send
BUS_MCEERR_AO for action required error") fixed the issue that Action
Required memory could unnecessarily send SIGBUS to the processes which
share the error memory. But we still have another issue that we could
send SIGBUS to a wrong thread.
This is because collect_procs() and task_early_kill() fails to add the
current process to "to-kill" list. So this patch is suggesting to fix
it. With this fix, SIGBUS(BUS_MCEERR_AR) is never sent to non-current
process/thread.
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Tony Luck <tony.luck@intel.com>
Acked-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Link: http://lkml.kernel.org/r/1591321039-22141-3-git-send-email-naoya.horiguchi@nec.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "hwpoison: fixes signaling on memory error"
This is a small patchset to solve issues in memory error handler to send
SIGBUS to proper process/thread as expected in configuration. Please
see descriptions in individual patches for more details.
This patch (of 2):
Early-kill policy is controlled from two types of settings, one is
per-process setting prctl(PR_MCE_KILL) and the other is system-wide
setting vm.memory_failure_early_kill. Users expect per-process setting
to override system-wide setting as many other settings do, but
early-kill setting doesn't work as such.
For example, if a system configures vm.memory_failure_early_kill to 1
(enabled), a process receives SIGBUS even if it's configured to
explicitly disable PF_MCE_KILL by prctl(). That's not desirable for
applications with their own policies.
This patch is suggesting to change the priority of these two types of
settings, by checking sysctl_memory_failure_early_kill only when a given
process has the default kill policy.
Note that this patch is solving a thread choice issue too.
Originally, collect_procs() always chooses the main thread when
vm.memory_failure_early_kill is 1, even if the process has a dedicated
thread for memory error handling. SIGBUS should be sent to the
dedicated thread if early-kill is enabled via
vm.memory_failure_early_kill as we are doing for PR_MCE_KILL_EARLY
processes.
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Link: http://lkml.kernel.org/r/1591321039-22141-1-git-send-email-naoya.horiguchi@nec.com
Link: http://lkml.kernel.org/r/1591321039-22141-2-git-send-email-naoya.horiguchi@nec.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Merge tag 'io_uring-5.8-2020-06-11' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"A few late stragglers in here. In particular:
- Validate full range for provided buffers (Bijan)
- Fix bad use of kfree() in buffer registration failure (Denis)
- Don't allow close of ring itself, it's not fully safe. Making it
fully safe would require making the system call more expensive,
which isn't worth it.
- Buffer selection fix
- Regression fix for O_NONBLOCK retry
- Make IORING_OP_ACCEPT honor O_NONBLOCK (Jiufei)
- Restrict opcode handling for SQ/IOPOLL (Pavel)
- io-wq work handling cleanups and improvements (Pavel, Xiaoguang)
- IOPOLL race fix (Xiaoguang)"
* tag 'io_uring-5.8-2020-06-11' of git://git.kernel.dk/linux-block:
io_uring: fix io_kiocb.flags modification race in IOPOLL mode
io_uring: check file O_NONBLOCK state for accept
io_uring: avoid unnecessary io_wq_work copy for fast poll feature
io_uring: avoid whole io_wq_work copy for requests completed inline
io_uring: allow O_NONBLOCK async retry
io_wq: add per-wq work handler instead of per work
io_uring: don't arm a timeout through work.func
io_uring: remove custom ->func handlers
io_uring: don't derive close state from ->func
io_uring: use kvfree() in io_sqe_buffer_register()
io_uring: validate the full range of provided buffers for access
io_uring: re-set iov base/len for buffer select retry
io_uring: move send/recv IOPOLL check into prep
io_uring: deduplicate io_openat{,2}_prep()
io_uring: do build_open_how() only once
io_uring: fix {SQ,IO}POLL with unsupported opcodes
io_uring: disallow close of ring itself
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Merge tag 'block-5.8-2020-06-11' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Some followup fixes for this merge window. In particular:
- Seqcount write missing preemption disable for stats (Ahmed)
- blktrace fixes (Chaitanya)
- Redundant initializations (Colin)
- Various small NVMe fixes (Chaitanya, Christoph, Daniel, Max,
Niklas, Rikard)
- loop flag bug regression fix (Martijn)
- blk-mq tagging fixes (Christoph, Ming)"
* tag 'block-5.8-2020-06-11' of git://git.kernel.dk/linux-block:
umem: remove redundant initialization of variable ret
pktcdvd: remove redundant initialization of variable ret
nvmet: fail outstanding host posted AEN req
nvme-pci: use simple suspend when a HMB is enabled
nvme-fc: don't call nvme_cleanup_cmd() for AENs
nvmet-tcp: constify nvmet_tcp_ops
nvme-tcp: constify nvme_tcp_mq_ops and nvme_tcp_admin_mq_ops
nvme: do not call del_gendisk() on a disk that was never added
blk-mq: fix blk_mq_all_tag_iter
blk-mq: split out a __blk_mq_get_driver_tag helper
blktrace: fix endianness for blk_log_remap()
blktrace: fix endianness in get_pdu_int()
blktrace: use errno instead of bi_status
block: nr_sects_write(): Disable preemption on seqcount write
block: remove the error argument to the block_bio_complete tracepoint
loop: Fix wrong masking of status flags
block/bio-integrity: don't free 'buf' if bio_integrity_add_page() failed
Fix afs_store_data() so that it sets the mtime in the new operation
descriptor otherwise the mtime on the server gets set to 0 when a write is
stored to the server.
Fixes: e49c7b2f6d ("afs: Build an abstraction around an "operation" concept")
Reported-by: Dave Botsch <botsch@cnf.cornell.edu>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Unbreak paravirt VDSO clocks. While the VDSO code was moved into lib
for sharing a subtle check for the validity of paravirt clocks got
replaced. While the replacement works perfectly fine for bare metal as
the update of the VDSO clock mode is synchronous, it fails for paravirt
clocks because the hypervisor can invalidate them asynchronous. Bring
it back as an optional function so it does not inflict this on
architectures which are free of PV damage.
- Fix the jiffies to jiffies64 mapping on 64bit so it does not trigger
an ODR violation on newer compilers
- Three fixes for the SSBD and *IB* speculation mitigation maze to ensure
consistency, not disabling of some *IB* variants wrongly and to prevent
a rogue cross process shutdown of SSBD. All marked for stable.
- Add yet more CPU models to the splitlock detection capable list !@#%$!
- Bring the pr_info() back which tells that TSC deadline timer is enabled.
- Reboot quirk for MacBook6,1
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Merge tag 'x86-urgent-2020-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more x86 updates from Thomas Gleixner:
"A set of fixes and updates for x86:
- Unbreak paravirt VDSO clocks.
While the VDSO code was moved into lib for sharing a subtle check
for the validity of paravirt clocks got replaced. While the
replacement works perfectly fine for bare metal as the update of
the VDSO clock mode is synchronous, it fails for paravirt clocks
because the hypervisor can invalidate them asynchronously.
Bring it back as an optional function so it does not inflict this
on architectures which are free of PV damage.
- Fix the jiffies to jiffies64 mapping on 64bit so it does not
trigger an ODR violation on newer compilers
- Three fixes for the SSBD and *IB* speculation mitigation maze to
ensure consistency, not disabling of some *IB* variants wrongly and
to prevent a rogue cross process shutdown of SSBD. All marked for
stable.
- Add yet more CPU models to the splitlock detection capable list
!@#%$!
- Bring the pr_info() back which tells that TSC deadline timer is
enabled.
- Reboot quirk for MacBook6,1"
* tag 'x86-urgent-2020-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vdso: Unbreak paravirt VDSO clocks
lib/vdso: Provide sanity check for cycles (again)
clocksource: Remove obsolete ifdef
x86_64: Fix jiffies ODR violation
x86/speculation: PR_SPEC_FORCE_DISABLE enforcement for indirect branches.
x86/speculation: Prevent rogue cross-process SSBD shutdown
x86/speculation: Avoid force-disabling IBPB based on STIBP and enhanced IBRS.
x86/cpu: Add Sapphire Rapids CPU model number
x86/split_lock: Add Icelake microserver and Tigerlake CPU models
x86/apic: Make TSC deadline timer detection message visible
x86/reboot/quirks: Add MacBook6,1 reboot quirk
__cvdso_clock_gettime_common() so the compiler can't generate horrible
code.
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Merge tag 'timers-urgent-2020-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A small fix for the VDSO code to force inline
__cvdso_clock_gettime_common() so the compiler
can't generate horrible code"
* tag 'timers-urgent-2020-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
lib/vdso: Force inlining of __cvdso_clock_gettime_common()
Merge some more updates from Andrew Morton:
- various hotfixes and minor things
- hch's use_mm/unuse_mm clearnups
Subsystems affected by this patch series: mm/hugetlb, scripts, kcov,
lib, nilfs, checkpatch, lib, mm/debug, ocfs2, lib, misc.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
kernel: set USER_DS in kthread_use_mm
kernel: better document the use_mm/unuse_mm API contract
kernel: move use_mm/unuse_mm to kthread.c
kernel: move use_mm/unuse_mm to kthread.c
stacktrace: cleanup inconsistent variable type
lib: test get_count_order/long in test_bitops.c
mm: add comments on pglist_data zones
ocfs2: fix spelling mistake and grammar
mm/debug_vm_pgtable: fix kernel crash by checking for THP support
lib: fix bitmap_parse() on 64-bit big endian archs
checkpatch: correct check for kernel parameters doc
nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()
lib/lz4/lz4_decompress.c: document deliberate use of `&'
kcov: check kcov_softirq in kcov_remote_stop()
scripts/spelling: add a few more typos
khugepaged: selftests: fix timeout condition in wait_for_scan()
The patch introducing the struct was probably never compile tested,
because it sets a handler with a wrong function signature. Wrap the
handler into a functions with the correct signature to fix the build.
Fixes: 0f1c9688a1 ("tty/sysrq: alpha: export and use __sysrq_get_key_op()")
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Select statements are now sorted alphanumerically.
* Our first-level interrupts are now handled via a full irqchip driver.
* CPU hotplug is fixed.
* Our vDSO calls now use the common vDSO infrastructure.
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Merge tag 'riscv-for-linus-5.8-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull more RISC-V updates from Palmer Dabbelt:
- Kconfig select statements are now sorted alphanumerically
- first-level interrupts are now handled via a full irqchip driver
- CPU hotplug is fixed
- vDSO calls now use the common vDSO infrastructure
* tag 'riscv-for-linus-5.8-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: set the permission of vdso_data to read-only
riscv: use vDSO common flow to reduce the latency of the time-related functions
riscv: fix build warning of missing prototypes
RISC-V: Don't mark init section as non-executable
RISC-V: Force select RISCV_INTC for CONFIG_RISCV
RISC-V: Remove do_IRQ() function
clocksource/drivers/timer-riscv: Use per-CPU timer interrupt
irqchip: RISC-V per-HART local interrupt controller driver
RISC-V: Rename and move plic_find_hart_id() to arch directory
RISC-V: self-contained IPI handling routine
RISC-V: Sort select statements alphanumerically
- Fix SCS debug check to report max stack usage in bytes as advertised
- Fix typo: CONFIG_FTRACE_WITH_REGS => CONFIG_DYNAMIC_FTRACE_WITH_REGS
- Fix incorrect mask in HiSilicon L3C perf PMU driver
- Fix compat vDSO compilation under some toolchain configurations
- Fix false UBSAN warning from ACPI IORT parsing code
- Fix booting under bootloaders that ignore TEXT_OFFSET
- Annotate debug initcall function with '__init'
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"arm64 fixes that came in during the merge window.
There will probably be more to come, but it doesn't seem like it's
worth me sitting on these in the meantime.
- Fix SCS debug check to report max stack usage in bytes as advertised
- Fix typo: CONFIG_FTRACE_WITH_REGS => CONFIG_DYNAMIC_FTRACE_WITH_REGS
- Fix incorrect mask in HiSilicon L3C perf PMU driver
- Fix compat vDSO compilation under some toolchain configurations
- Fix false UBSAN warning from ACPI IORT parsing code
- Fix booting under bootloaders that ignore TEXT_OFFSET
- Annotate debug initcall function with '__init'"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: warn on incorrect placement of the kernel by the bootloader
arm64: acpi: fix UBSAN warning
arm64: vdso32: add CONFIG_THUMB2_COMPAT_VDSO
drivers/perf: hisi: Fix wrong value for all counters enable
arm64: ftrace: Change CONFIG_FTRACE_WITH_REGS to CONFIG_DYNAMIC_FTRACE_WITH_REGS
arm64: debug: mark a function as __init to save some memory
scs: Report SCS usage in bytes rather than number of entries
Fixes include:
. casting clean up in the user access macros
. memory leak on error case fix for PCI probing
. update of a defconfig.
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Merge tag 'm68knommu-for-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu updates from Greg Ungerer:
- casting clean up in the user access macros
- memory leak on error case fix for PCI probing
- update of a defconfig
* tag 'm68knommu-for-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k,nommu: fix implicit cast from __user in __{get,put}_user_asm()
m68k,nommu: add missing __user in uaccess' __ptr() macro
m68k: Drop CONFIG_MTD_M25P80 in stmark2_defconfig
m68k/PCI: Fix a memory leak in an error handling path
new controller driver for IPCC
reorg the of_device data
add support for ipq6018 platform
- spreadtrum:
new sprd controller driver
- imx:
implement suspend/resume PM support
- Misc :
make pcc driver struct as static
fix return value in imx_mu_scu
disable clock before bailout in imx probe
remove duplicate error mssg in zynqmp probe
fix header size in imx.scu
check for null instead of is-err in zynqmp
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Merge tag 'mailbox-v5.8' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar:
"qcom:
- new controller driver for IPCC
- reorg the of_device data
- add support for ipq6018 platform
spreadtrum:
- new sprd controller driver
imx:
- implement suspend/resume PM support
misc:
- make pcc driver struct static
- fix return value in imx_mu_scu
- disable clock before bailout in imx probe
- remove duplicate error mssg in zynqmp probe
- fix header size in imx.scu
- check for null instead of is-err in zynqmp"
* tag 'mailbox-v5.8' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
mailbox: qcom: Add ipq6018 apcs compatible
mailbox: qcom: Add clock driver name in apcs mailbox driver data
dt-bindings: mailbox: Add YAML schemas for QCOM APCS global block
mailbox: imx: ONLY IPC MU needs IRQF_NO_SUSPEND flag
mailbox: imx: Add runtime PM callback to handle MU clocks
mailbox: imx: Add context save/restore for suspend/resume
MAINTAINERS: Add entry for Qualcomm IPCC driver
mailbox: Add support for Qualcomm IPCC
dt-bindings: mailbox: Add devicetree binding for Qcom IPCC
mailbox: zynqmp-ipi: Fix NULL vs IS_ERR() check in zynqmp_ipi_mbox_probe()
mailbox: imx-mailbox: fix scu msg header size check
mailbox: sprd: Add Spreadtrum mailbox driver
dt-bindings: mailbox: Add the Spreadtrum mailbox documentation
mailbox: ZynqMP IPI: Delete an error message in zynqmp_ipi_probe()
mailbox: imx: Disable the clock on devm_mbox_controller_register() failure
mailbox: imx: Fix return in imx_mu_scu_xlate()
mailbox: imx: Support runtime PM
mailbox: pcc: make pcc_mbox_driver static
Here are last-minute fixes gathered before merge window close;
a few fixes are for the core while the rest majority are driver
fixes.
* PCM locking annotation fixes and the possible self-lock fix
* ASoC DPCM regression fixes with multi-CPU DAI
* A fix for inconsistent resume from system-PM on USB-audio
* Improved runtime-PM handling with multiple USB interfaces
* Quirks for HD-audio and USB-audio
* Hardened firmware handling in max98390 codec
* A couple of fixes for meson
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Merge tag 'sound-fix-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here are last-minute fixes gathered before merge window close; a few
fixes are for the core while the rest majority are driver fixes.
- PCM locking annotation fixes and the possible self-lock fix
- ASoC DPCM regression fixes with multi-CPU DAI
- A fix for inconsistent resume from system-PM on USB-audio
- Improved runtime-PM handling with multiple USB interfaces
- Quirks for HD-audio and USB-audio
- Hardened firmware handling in max98390 codec
- A couple of fixes for meson"
* tag 'sound-fix-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (21 commits)
ASoC: rt5645: Add platform-data for Asus T101HA
ASoC: Intel: bytcr_rt5640: Add quirk for Toshiba Encore WT10-A tablet
ASoC: SOF: nocodec: conditionally set dpcm_capture/dpcm_playback flags
ASoC: Intel: boards: replace capture_only by dpcm_capture
ASoC: core: only convert non DPCM link to DPCM link
ASoC: soc-pcm: dpcm: fix playback/capture checks
ASoC: meson: add missing free_irq() in error path
ALSA: pcm: disallow linking stream to itself
ALSA: usb-audio: Manage auto-pm of all bundled interfaces
ALSA: hda/realtek - add a pintbl quirk for several Lenovo machines
ALSA: pcm: fix snd_pcm_link() lockdep splat
ALSA: usb-audio: Use the new macro for HP Dock rename quirks
ALSA: usb-audio: Add vendor, product and profile name for HP Thunderbolt Dock
ALSA: emu10k1: delete an unnecessary condition
dt-bindings: ASoc: Fix tdm-slot documentation spelling error
ASoC: meson: fix memory leak of links if allocation of ldata fails
ALSA: usb-audio: Fix inconsistent card PM state after resume
ASoC: max98390: Fix potential crash during param fw loading
ASoC: max98390: Fix incorrect printf qualifier
ASoC: fsl-asoc-card: Defer probe when fail to find codec device
...
core:
- fix race in connectors sending hotplug
i915:
- Avoid use after free in cmdparser
- Avoid NULL dereference when probing all display encoders
- Fixup to module parameter type
sun4i:
- clock divider fix
ast:
- 24/32 bpp mode setting fix
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Merge tag 'drm-next-2020-06-11-1' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"One sun4i fix and a connector hotplug race The ast fix is for a
regression in 5.6, and one of the i915 ones fixes an oops reported by
dhowells.
core:
- fix race in connectors sending hotplug
i915:
- Avoid use after free in cmdparser
- Avoid NULL dereference when probing all display encoders
- Fixup to module parameter type
sun4i:
- clock divider fix
ast:
- 24/32 bpp mode setting fix"
* tag 'drm-next-2020-06-11-1' of git://anongit.freedesktop.org/drm/drm:
drm/ast: fix missing break in switch statement for format->cpp[0] case 4
drm/sun4i: hdmi ddc clk: Fix size of m divider
drm/i915/display: Only query DP state of a DDI encoder
drm/i915/params: fix i915.reset module param type
drm/i915/gem: Mark the buffer pool as active for the cmdparser
drm/connector: notify userspace on hotplug after register complete
Jonathan Albrieux