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When a user-supplied value is out of range, (NEW) and an incorrect default
value are shown.
[Test Kconfig]
config FOO
int "foo"
range 10 20
[Test .config]
CONFIG_FOO=30
[Result without this fix]
$ make config
*
* Main menu
*
foo (FOO) [10] (NEW)
[Result with this fix]
$ make config
*
* Main menu
*
foo (FOO) [20]
Currently, the SYMBOL_DEF_USER is cleared if the user input does not
reside within the range. Kconfig forgets the initial value 30, and
prints (NEW) and an incorrect default [10].
Kconfig should remember the user's input. The default should be [20]
because the user's input, 30, is closer to the upper limit of the range.
Please note it will not show up in "make oldconfig" because it is no
longer considered as a new symbol. It also fixes the inconsistent
behavior in listnewconfig/helpnewconfig.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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getopt_long() is used by various tools in the kernel (e.g. Kconfig).
It should be fine to use it all the time.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Commit 74d931716151 ("genksyms: remove symbol prefix support") removed
the -s (--symbol-prefix) option.
Clean up the left-over.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc and other driver updates from Greg KH:
"Here is the big set of char/misc and other driver subsystem changes
for 6.8-rc1.
Other than lots of binder driver changes (as you can see by the merge
conflicts) included in here are:
- lots of iio driver updates and additions
- spmi driver updates
- eeprom driver updates
- firmware driver updates
- ocxl driver updates
- mhi driver updates
- w1 driver updates
- nvmem driver updates
- coresight driver updates
- platform driver remove callback api changes
- tags.sh script updates
- bus_type constant marking cleanups
- lots of other small driver updates
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (341 commits)
android: removed duplicate linux/errno
uio: Fix use-after-free in uio_open
drivers: soc: xilinx: add check for platform
firmware: xilinx: Export function to use in other module
scripts/tags.sh: remove find_sources
scripts/tags.sh: use -n to test archinclude
scripts/tags.sh: add local annotation
scripts/tags.sh: use more portable -path instead of -wholename
scripts/tags.sh: Update comment (addition of gtags)
firmware: zynqmp: Convert to platform remove callback returning void
firmware: turris-mox-rwtm: Convert to platform remove callback returning void
firmware: stratix10-svc: Convert to platform remove callback returning void
firmware: stratix10-rsu: Convert to platform remove callback returning void
firmware: raspberrypi: Convert to platform remove callback returning void
firmware: qemu_fw_cfg: Convert to platform remove callback returning void
firmware: mtk-adsp-ipc: Convert to platform remove callback returning void
firmware: imx-dsp: Convert to platform remove callback returning void
firmware: coreboot_table: Convert to platform remove callback returning void
firmware: arm_scpi: Convert to platform remove callback returning void
firmware: arm_scmi: Convert to platform remove callback returning void
...
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After commit '4f628248a578 kbuild: reintroduce ALLSOURCE_ARCHS support for
tags/cscope', find_sources only invoke find_arch_sources.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
CC: Jike Song <albcamus@gmail.com>
Link: https://lore.kernel.org/r/20231229030654.17474-4-richard.weiyang@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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In bash, "! -z" is equivalent to "-n", which seems to be more intuitive.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
CC: Sam Ravnborg <sam@ravnborg.org>
Link: https://lore.kernel.org/r/20231229030654.17474-3-richard.weiyang@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 'f81b1be40c44 tags: include headers before source files'
introduce two local variables.
Let's add local annotation to make it obvious.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Link: https://lore.kernel.org/r/20231229030654.17474-2-richard.weiyang@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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According to the manual, -path is more portable than -wholename. Also
for consistency, let's use -path here.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
CC: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
CC: WANG Cong <xiyou.wangcong@gmail.com>
CC: Michal Marek <mmarek@suse.cz>
Link: https://lore.kernel.org/r/20231229030654.17474-1-richard.weiyang@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit f4ed1009fcea ("kbuild: add GNU GLOBAL tags generation") added
support for the GNU Global source tagging system. However, this addition
was not reflected in the script's header comment.
Fixes: f4ed1009fcea ("kbuild: add GNU GLOBAL tags generation")
Signed-off-by: René Nyffenegger <mail@renenyffenegger.ch>
Link: https://lore.kernel.org/r/20231217082719.4747-1-mail@renenyffenegger.ch
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next
Jonathan writes:
1st set of IIO new device support, features and cleanup for 6.8
New device support
------------------
adi,hmc425a
* Add support for ADRF5740 attenuators. Minor changes to driver needed
alongside new IDs.
aosong,ags02ma
* New driver for this volatile organic compounds sensor.
bosch,bmp280
* Add BMP390 (small amount of refactoring + ID)
bosch,bmi323
* New driver to support the BMI323 6-axis IMU.
honeywell,hsc030pa
* New driver supporting a huge number of SSC and HSC series pressure and
temperature sensors.
isil,isl76682
* New driver for this simple Ambient Light sensor.
liteon,ltr390
* New driver for this ambient and ultraviolet light sensor.
maxim,max34408
* New driver to support the MAX34408 and MAX34409 current monitoring ADCs.
melexis,mlx90635
* New driver for this Infrared contactless temperature sensor.
mirochip,mcp9600
* New driver for this thermocouple EMF convertor.
ti,hdc3020
* New driver for this integrated relative humidity and temperature
sensor.
vishay,veml6075
* New driver for this UVA and UVB light sensor.
General features
----------------
Device properties
* Add fwnode_property_match_property_string() helper to allow matching
single value property against an array of predefined strings.
* Use fwnode_property_string_array_count() inside
fwnode_property_match_string() instead of open coding the same.
checkpatch.pl
* Add exclusion of __aligned() from a warning reducing false positives
on IIO drivers (and hopefully beyond)
IIO Features
------------
core
* New light channel modifiers for UVA and UVB.
* Add IIO_CHAN_INFO_TROUGH as counterpart to IIO_CHAN_INFO_PEAK so that
we can support device that keep running track of the lowest value they
have seen in similar fashion to the existing peak tracking.
adi,adis library
* Use spi cs inactive delay even when a burst reading is performed.
As it's now used every time, can centralize the handling in the SPI
setup code in the driver.
adi,ad2s1210
* Support for fixed-mode to this resolver driver where the A0 and A1
pins are hard wired to config mode in which case position and config
must be read from appropriate config registers.
* Support reset GPIO if present.
adi,ad5791
* Allow configuration of presence of external amplifier in DT binding.
adi,adis16400
* Add spi-cs-inactive-delay-ns to bindings to allow it to be tweaked
if default delays are not quite enough for a specific board.
adi,adis16475
* Add spi-cs-inactive-delay-ns to bindings to allow it to be tweaked
if default delays are not quite enough for a specific board.
bosch,bmp280
* Enable multiple chip IDs per family of devices.
rohm,bu27008
* Add an illuminance channel calculated from RGB and IR data.
Cleanup
-------
Minor white space, typos and tidy up not explicitly called out.
Core
* Check that the available_scan_masks array passed to the IIO core
by a driver is sensible by ensuring the entries are ordered so the
minimum number of channels is enabled in the earlier entries (as they
will be selected if sufficient for the requested channels).
* Document that the available_scan_masks infrastructure doesn't currently
handle masks that don't fit in a long int.
* Improve intensity documentation to reflect that there is no expectation
of sensible units (it's dependent on a frequency sensitivity curve)
Various
* Use new device_property_match_property_string() to replace open coded
versions of the same thing.
* Fix a few MAINTAINERS filenames.
* i2c_get_match_data() and spi_get_device_match_data() pushed into
more drivers reducing boilerplate handling.
* Some unnecessary headers removed.
* ACPI_PTR() removals. It's rarely worth using this.
adi,ad7091r (early part of a series adding device support - useful in
their own right)
* Pass iio_dev directly an event handler rather than relying
on broken use of dev_get_drvdata() as drvdata is never set in this driver.
* Make sure alert is turned on.
adi,ad9467 (general driver fixing up as precursor to iio-backend proposal
which is under review for 6.9)
* Fix reset gpio handling to match expected polarity.
* Always handle error codes from spi_writes.
* Add a driver instance local mutex to avoid some races.
* Fix scale setting to align with available scale values.
* Split array of chip_info structures up into named individual elements.
* Convert to regmap.
honeywell,mprls0025pa
* Drop now unnecessary type references in DT binding for properties in
pascals.
invensense,mpu6050
* Don't eat a potentially useful return value from regmap_bulk_write()
invensense,icm42600
* Use max macro to improve code readability and save a few lines.
liteon,ltrf216a
* Improve prevision of light intensity.
microchip,mcp3911
* Use cleanup.h magic.
qcom,spmi*
* Fix wrong descriptions of SPMI reg fields in bindings.
Other
----
mailmap
* Update for Matt Ranostay
* tag 'iio-for-6.8a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (83 commits)
iio: adc: ad7091r: Align arguments to function call parenthesis
iio: adc: ad7091r: Set alert bit in config register
iio: adc: ad7091r: Pass iio_dev to event handler
scripts: checkpatch: Add __aligned to the list of attribute notes
iio: chemical: add support for Aosong AGS02MA
dt-bindings: iio: chemical: add aosong,ags02ma
dt-bindings: vendor-prefixes: add aosong
iio: accel: bmi088: update comments and Kconfig
dt-bindings: iio: humidity: Add TI HDC302x support
iio: humidity: Add driver for ti HDC302x humidity sensors
iio: ABI: document temperature and humidity peak/trough raw attributes
iio: core: introduce trough info element for minimum values
iio: light: driver for Lite-On ltr390
dt-bindings: iio: light: add ltr390
iio: light: isl76682: remove unreachable code
iio: pressure: driver for Honeywell HSC/SSC series
dt-bindings: iio: pressure: add honeywell,hsc030
doc: iio: Document intensity scale as poorly defined
dt-bindings: iio: temperature: add MLX90635 device
iio: temperature: mlx90635 MLX90635 IR Temperature sensor
...
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Checkpatch presumes attributes marked with __aligned(alignment) are part
of a function declaration and throws a warning stating that those
compiler attributes should have an identifier name which is not correct.
Add __aligned compiler attributes to the list of attribute notes
so they don't cause warnings anymore.
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Acked-by: Joe Perches <joe@perches.com>
Link: https://lore.kernel.org/r/1c5c93ecbd8c46a338b22a4ef52e51648e333c01.1702746240.git.marcelo.schmitt1@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc hotfixes from Andrew Morton:
"For once not mostly MM-related.
17 hotfixes. 10 address post-6.7 issues and the other 7 are cc:stable"
* tag 'mm-hotfixes-stable-2024-01-12-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
userfaultfd: avoid huge_zero_page in UFFDIO_MOVE
MAINTAINERS: add entry for shrinker
selftests: mm: hugepage-vmemmap fails on 64K page size systems
mm/memory_hotplug: fix memmap_on_memory sysfs value retrieval
mailmap: switch email for Tanzir Hasan
mailmap: add old address mappings for Randy
kernel/crash_core.c: make __crash_hotplug_lock static
efi: disable mirror feature during crashkernel
kexec: do syscore_shutdown() in kernel_kexec
mailmap: update entry for Manivannan Sadhasivam
fs/proc/task_mmu: move mmu notification mechanism inside mm lock
mm: zswap: switch maintainers to recently active developers and reviewers
scripts/decode_stacktrace.sh: optionally use LLVM utilities
kasan: avoid resetting aux_lock
lib/Kconfig.debug: disable CONFIG_DEBUG_INFO_BTF for Hexagon
MAINTAINERS: update LTP maintainers
kdump: defer the insertion of crashkernel resources
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GNU's addr2line can have problems parsing a vmlinux built with LLVM,
particularly when LTO was used. In order to decode the traces correctly
this patch adds the ability to switch to LLVM's utilities readelf and
addr2line. The same approach is followed by Will in [1].
Before:
$ scripts/decode_stacktrace.sh vmlinux < kernel.log
[17716.240635] Call trace:
[17716.240646] skb_cow_data (??:?)
[17716.240654] esp6_input (ld-temp.o:?)
[17716.240666] xfrm_input (ld-temp.o:?)
[17716.240674] xfrm6_rcv (??:?)
[...]
After:
$ LLVM=1 scripts/decode_stacktrace.sh vmlinux < kernel.log
[17716.240635] Call trace:
[17716.240646] skb_cow_data (include/linux/skbuff.h:2172 net/core/skbuff.c:4503)
[17716.240654] esp6_input (net/ipv6/esp6.c:977)
[17716.240666] xfrm_input (net/xfrm/xfrm_input.c:659)
[17716.240674] xfrm6_rcv (net/ipv6/xfrm6_input.c:172)
[...]
Note that one could set CROSS_COMPILE=llvm- instead to hack around this
issue. However, doing so can break the decodecode routine as it will
force the selection of other LLVM utilities down the line e.g. llvm-as.
[1] https://lore.kernel.org/all/20230914131225.13415-3-will@kernel.org/
Link: https://lkml.kernel.org/r/20230929034836.403735-1-cmllamas@google.com
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Elliot Berman <quic_eberman@quicinc.com>
Tested-by: Justin Stitt <justinstitt@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: John Stultz <jstultz@google.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Tom Rix <trix@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Pull documentation update from Jonathan Corbet:
"Another moderately busy cycle for documentation, including:
- The minimum Sphinx requirement has been raised to 2.4.4, following
a warning that was added in 6.2
- Some reworking of the Documentation/process front page to,
hopefully, make it more useful
- Various kernel-doc tweaks to, for example, make it deal properly
with __counted_by annotations
- We have also restored a warning for documentation of nonexistent
structure members that disappeared a while back. That had the
delightful consequence of adding some 600 warnings to the docs
build. A sustained effort by Randy, Vegard, and myself has
addressed almost all of those, bringing the documentation back into
sync with the code. The fixes are going through the appropriate
maintainer trees
- Various improvements to the HTML rendered docs, including automatic
links to Git revisions and a nice new pulldown to make translations
easy to access
- Speaking of translations, more of those for Spanish and Chinese
... plus the usual stream of documentation updates and typo fixes"
* tag 'docs-6.8' of git://git.lwn.net/linux: (57 commits)
MAINTAINERS: use tabs for indent of CONFIDENTIAL COMPUTING THREAT MODEL
A reworked process/index.rst
ring-buffer/Documentation: Add documentation on buffer_percent file
Translated the RISC-V architecture boot documentation.
Docs: remove mentions of fdformat from util-linux
Docs/zh_CN: Fix the meaning of DEBUG to pr_debug()
Documentation: move driver-api/dcdbas to userspace-api/
Documentation: move driver-api/isapnp to userspace-api/
Documentation/core-api : fix typo in workqueue
Documentation/trace: Fixed typos in the ftrace FLAGS section
kernel-doc: handle a void function without producing a warning
scripts/get_abi.pl: ignore some temp files
docs: kernel_abi.py: fix command injection
scripts/get_abi: fix source path leak
CREDITS, MAINTAINERS, docs/process/howto: Update man-pages' maintainer
docs: translations: add translations links when they exist
kernel-doc: Align quick help and the code
MAINTAINERS: add reviewer for Spanish translations
docs: ignore __counted_by attribute in structure definitions
scripts: kernel-doc: Clarify missing struct member description
..
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Currently a void function can produce a warning:
main.c:469: warning: contents before sections
This one is from arch/x86/kernel/cpu/sgx/main.c (which is not included
in any produced kernel documentation output).
Handle this by setting $in_doc_sect to 1 whenever any recognized
document section name is processed.
Fixes: f624adef3d0b ("kernel-doc: limit the "section header:" detection to a select few")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20231226065219.319-1-rdunlap@infradead.org
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When there are filenames of the form ".orig" or ".rej" in
the Documenatation/ABI/ subdirectories, there can be confusing or
erroneous output generated. Example: the file
Documenation/ABI/testing/sysfs-bus-papr-pmem.orig causes this
warning message:
Documentation/ABI/testing/sysfs-bus-papr-pmem:2: WARNING: unknown document: '/powerpc/papr_hcalls'
Prevent this by skipping over filenames that may be created by
patch/diff tools etc.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20231228233113.5218-1-rdunlap@infradead.org
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The code currently leaks the absolute path of the ABI files into the
rendered documentation.
There exists code to prevent this, but it is not effective when an
absolute path is passed, which it is when $srctree is used.
I consider this to be a minimal, stop-gap fix; a better fix would strip
off the actual prefix instead of hacking it off with a regex.
Link: https://mastodon.social/@vegard/111677490643495163
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20231231235959.3342928-1-vegard.nossum@oracle.com
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The update to the quick help mentions -Wshort-description, but
code never supported for that. Align that with the code by allowing
both: -Wshort-description and -Wshort-desc.
Fixes: 56b0f453db74 ("kernel-doc: don't let V=1 change outcome")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20231215150341.1996720-1-andriy.shevchenko@linux.intel.com
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kernel-doc appeared to ignore __counted_by, but appearances can be
deceiving; it caused member names to not be recognized, which manifested as
a number of spurious "Excess struct member" warnings. Filter that
attribute out and reduce the warning onslaught slightly.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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The output "or member" should be more specific, instead saying "struct
member".
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20231215001513.work.563-kees@kernel.org
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The warning for Excess struct or union member description was
removed when the $nested parameter of check_sections() was removed.
This causes some kernel-doc notation warnings to be missed.
Recently the kernel test robot somehow reported an Excess member. The
code in kernel-doc has not issued that warning since kernel v4.16, so I
don't know how the robot did it. (See the Link for the report.)
drivers/net/wireless/intel/iwlwifi/fw/dbg.c:86: warning: Excess struct/union/enum/typedef member 'trans_len' description in 'iwl_fw_dump_ptrs'
I patched that warning away even though I could not reproduce the
warning from kernel-doc. The warning should be issued for extraneous
struct member or union member description, so restore it.
Fixes: 1081de2d2f91 ("scripts: kernel-doc: get rid of $nested parameter")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/all/202312060810.QT9zourt-lkp@intel.com/
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20231214070200.24405-1-rdunlap@infradead.org
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Commit 31abfdda6527 (docs: Deprecate use of Sphinx < 2.4.x) in 6.2 added a
warning that support for older versions of Sphinx would be going away.
There have been no complaints, so the time has come. Raise the minimum
Sphinx version to 2.4.4 and clean out some compatibility code that we no
longer need.
Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/874jgs47fq.fsf@meer.lwn.net
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Pull Rust updates from Miguel Ojeda:
"Another routine one in terms of features. In terms of lines, this time
the 'alloc' version upgrade is less prominent, given that it was
fairly small (and we did not have two upgrades)
Toolchain and infrastructure:
- Upgrade to Rust 1.74.1
The patch release includes a fix for an ICE that the Apple AGX GPU
driver was hitting
- Support 'srctree'-relative links in Rust code documentation
- Automate part of the manual constants handling (i.e. the ones not
recognised by 'bindgen')
- Suppress searching builtin sysroot to avoid confusion with
installed sysroots, needed for the to-be-merged arm64 support which
uses a builtin target
- Ignore '__preserve_most' functions for 'bindgen'
- Reduce header inclusion bloat in exports
'kernel' crate:
- Implement 'Debug' for 'CString'
- Make 'CondVar::wait()' an uninterruptible wait
'macros' crate:
- Update 'paste!' to accept string literals
- Improve '#[vtable]' documentation
Documentation:
- Add testing section (KUnit and 'rusttest' target)
- Remove 'CC=clang' mentions
- Clarify that 'rustup override' applies to build directory"
* tag 'rust-6.8' of https://github.com/Rust-for-Linux/linux:
docs: rust: Clarify that 'rustup override' applies to build directory
docs: rust: Add rusttest info
docs: rust: remove `CC=clang` mentions
rust: support `srctree`-relative links
rust: sync: Makes `CondVar::wait()` an uninterruptible wait
rust: upgrade to Rust 1.74.1
rust: Suppress searching builtin sysroot
rust: macros: improve `#[vtable]` documentation
rust: macros: update 'paste!' macro to accept string literals
rust: bindings: rename const binding using sed
rust: Ignore preserve-most functions
rust: replace <linux/module.h> with <linux/export.h> in rust/exports.c
rust: kernel: str: Implement Debug for CString
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This is the next upgrade to the Rust toolchain, from 1.73.0 to 1.74.1
(i.e. the latest) [1].
See the upgrade policy [2] and the comments on the first upgrade in
commit 3ed03f4da06e ("rust: upgrade to Rust 1.68.2").
# Unstable features
No unstable features (that we use) were stabilized.
Therefore, the only unstable features allowed to be used outside the
`kernel` crate are still `new_uninit,offset_of`, though other code to
be upstreamed may increase the list (e.g. `offset_of` was added recently).
Please see [3] for details.
# Other improvements
Rust 1.74.0 allows to use `#[repr(Rust)]` explicitly [4], which can be
useful to be explicit about particular cases that would normally use
e.g. the C representation, such as silencing lints like the upcoming
additions we requested [5] to the `no_mangle_with_rust_abi` Clippy lint
(which in turn triggered the `#[repr(Rust)]` addition).
Rust 1.74.0 includes a fix for one of the false negative cases we reported
in Clippy's `disallowed_macros` lint [6] that we would like to use in
the future.
Rust 1.74.1 fixes an ICE that the Apple AGX GPU driver was hitting [7].
# Required changes
For this upgrade, no changes were required (i.e. on our side).
# `alloc` upgrade and reviewing
The vast majority of changes are due to our `alloc` fork being upgraded
at once.
There are two kinds of changes to be aware of: the ones coming from
upstream, which we should follow as closely as possible, and the updates
needed in our added fallible APIs to keep them matching the newer
infallible APIs coming from upstream.
Instead of taking a look at the diff of this patch, an alternative
approach is reviewing a diff of the changes between upstream `alloc` and
the kernel's. This allows to easily inspect the kernel additions only,
especially to check if the fallible methods we already have still match
the infallible ones in the new version coming from upstream.
Another approach is reviewing the changes introduced in the additions in
the kernel fork between the two versions. This is useful to spot
potentially unintended changes to our additions.
To apply these approaches, one may follow steps similar to the following
to generate a pair of patches that show the differences between upstream
Rust and the kernel (for the subset of `alloc` we use) before and after
applying this patch:
# Get the difference with respect to the old version.
git -C rust checkout $(linux/scripts/min-tool-version.sh rustc)
git -C linux ls-tree -r --name-only HEAD -- rust/alloc |
cut -d/ -f3- |
grep -Fv README.md |
xargs -IPATH cp rust/library/alloc/src/PATH linux/rust/alloc/PATH
git -C linux diff --patch-with-stat --summary -R > old.patch
git -C linux restore rust/alloc
# Apply this patch.
git -C linux am rust-upgrade.patch
# Get the difference with respect to the new version.
git -C rust checkout $(linux/scripts/min-tool-version.sh rustc)
git -C linux ls-tree -r --name-only HEAD -- rust/alloc |
cut -d/ -f3- |
grep -Fv README.md |
xargs -IPATH cp rust/library/alloc/src/PATH linux/rust/alloc/PATH
git -C linux diff --patch-with-stat --summary -R > new.patch
git -C linux restore rust/alloc
Now one may check the `new.patch` to take a look at the additions (first
approach) or at the difference between those two patches (second
approach). For the latter, a side-by-side tool is recommended.
Link: https://github.com/rust-lang/rust/blob/stable/RELEASES.md#version-1741-2023-12-07 [1]
Link: https://rust-for-linux.com/rust-version-policy [2]
Link: https://github.com/Rust-for-Linux/linux/issues/2 [3]
Link: https://github.com/rust-lang/rust/pull/114201 [4]
Link: https://github.com/rust-lang/rust-clippy/issues/11219 [5]
Link: https://github.com/rust-lang/rust-clippy/issues/11431 [6]
Link: https://github.com/rust-lang/rust/issues/117976#issuecomment-1822225691 [7]
Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Tested-by: David Gow <davidgow@google.com>
Link: https://lore.kernel.org/r/20231214092958.377061-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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By default, if Rust is passed `--target=foo` rather than a target.json
file, it will infer a default sysroot if that component is installed. As
the proposed aarch64 support [1] uses `aarch64-unknown-none` rather than a
target.json file, this is needed [2] to prevent rustc from being confused
between the custom kernel sysroot and the pre-installed one.
[ Miguel: Applied Boqun's extra case (for `rusttest`) and reworded to add
links to the arm64 patch series discussion. In addition, fixed the
`rustdoc` target too (which requires a conditional since `cmd_rustdoc`
is also used for host crates like `macros`). ]
Signed-off-by: Matthew Maurer <mmaurer@google.com>
Tested-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/rust-for-linux/20231020155056.3495121-1-Jamie.Cunliffe@arm.com/ [1]
Link: https://lore.kernel.org/rust-for-linux/CAGSQo01pOixiPXkW867h4vPUaAjtKtHGKhkV-rpifJvKxAf4Ww@mail.gmail.com/ [2]
Link: https://lore.kernel.org/r/20231031201752.1189213-1-mmaurer@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"The most interesting thing is probably the networking structs
reorganization and a significant amount of changes is around
self-tests.
Core & protocols:
- Analyze and reorganize core networking structs (socks, netdev,
netns, mibs) to optimize cacheline consumption and set up build
time warnings to safeguard against future header changes
This improves TCP performances with many concurrent connections up
to 40%
- Add page-pool netlink-based introspection, exposing the memory
usage and recycling stats. This helps indentify bad PP users and
possible leaks
- Refine TCP/DCCP source port selection to no longer favor even
source port at connect() time when IP_LOCAL_PORT_RANGE is set. This
lowers the time taken by connect() for hosts having many active
connections to the same destination
- Refactor the TCP bind conflict code, shrinking related socket
structs
- Refactor TCP SYN-Cookie handling, as a preparation step to allow
arbitrary SYN-Cookie processing via eBPF
- Tune optmem_max for 0-copy usage, increasing the default value to
128KB and namespecifying it
- Allow coalescing for cloned skbs coming from page pools, improving
RX performances with some common configurations
- Reduce extension header parsing overhead at GRO time
- Add bridge MDB bulk deletion support, allowing user-space to
request the deletion of matching entries
- Reorder nftables struct members, to keep data accessed by the
datapath first
- Introduce TC block ports tracking and use. This allows supporting
multicast-like behavior at the TC layer
- Remove UAPI support for retired TC qdiscs (dsmark, CBQ and ATM) and
classifiers (RSVP and tcindex)
- More data-race annotations
- Extend the diag interface to dump TCP bound-only sockets
- Conditional notification of events for TC qdisc class and actions
- Support for WPAN dynamic associations with nearby devices, to form
a sub-network using a specific PAN ID
- Implement SMCv2.1 virtual ISM device support
- Add support for Batman-avd mulicast packet type
BPF:
- Tons of verifier improvements:
- BPF register bounds logic and range support along with a large
test suite
- log improvements
- complete precision tracking support for register spills
- track aligned STACK_ZERO cases as imprecise spilled registers.
This improves the verifier "instructions processed" metric from
single digit to 50-60% for some programs
- support for user's global BPF subprogram arguments with few
commonly requested annotations for a better developer
experience
- support tracking of BPF_JNE which helps cases when the compiler
transforms (unsigned) "a > 0" into "if a == 0 goto xxx" and the
like
- several fixes
- Add initial TX metadata implementation for AF_XDP with support in
mlx5 and stmmac drivers. Two types of offloads are supported right
now, that is, TX timestamp and TX checksum offload
- Fix kCFI bugs in BPF all forms of indirect calls from BPF into
kernel and from kernel into BPF work with CFI enabled. This allows
BPF to work with CONFIG_FINEIBT=y
- Change BPF verifier logic to validate global subprograms lazily
instead of unconditionally before the main program, so they can be
guarded using BPF CO-RE techniques
- Support uid/gid options when mounting bpffs
- Add a new kfunc which acquires the associated cgroup of a task
within a specific cgroup v1 hierarchy where the latter is
identified by its id
- Extend verifier to allow bpf_refcount_acquire() of a map value
field obtained via direct load which is a use-case needed in
sched_ext
- Add BPF link_info support for uprobe multi link along with bpftool
integration for the latter
- Support for VLAN tag in XDP hints
- Remove deprecated bpfilter kernel leftovers given the project is
developed in user-space (https://github.com/facebook/bpfilter)
Misc:
- Support for parellel TC self-tests execution
- Increase MPTCP self-tests coverage
- Updated the bridge documentation, including several so-far
undocumented features
- Convert all the net self-tests to run in unique netns, to avoid
random failures due to conflict and allow concurrent runs
- Add TCP-AO self-tests
- Add kunit tests for both cfg80211 and mac80211
- Autogenerate Netlink families documentation from YAML spec
- Add yml-gen support for fixed headers and recursive nests, the tool
can now generate user-space code for all genetlink families for
which we have specs
- A bunch of additional module descriptions fixes
- Catch incorrect freeing of pages belonging to a page pool
Driver API:
- Rust abstractions for network PHY drivers; do not cover yet the
full C API, but already allow implementing functional PHY drivers
in rust
- Introduce queue and NAPI support in the netdev Netlink interface,
allowing complete access to the device <> NAPIs <> queues
relationship
- Introduce notifications filtering for devlink to allow control
application scale to thousands of instances
- Improve PHY validation, requesting rate matching information for
each ethtool link mode supported by both the PHY and host
- Add support for ethtool symmetric-xor RSS hash
- ACPI based Wifi band RFI (WBRF) mitigation feature for the AMD
platform
- Expose pin fractional frequency offset value over new DPLL generic
netlink attribute
- Convert older drivers to platform remove callback returning void
- Add support for PHY package MMD read/write
New hardware / drivers:
- Ethernet:
- Octeon CN10K devices
- Broadcom 5760X P7
- Qualcomm SM8550 SoC
- Texas Instrument DP83TG720S PHY
- Bluetooth:
- IMC Networks Bluetooth radio
Removed:
- WiFi:
- libertas 16-bit PCMCIA support
- Atmel at76c50x drivers
- HostAP ISA/PCMCIA style 802.11b driver
- zd1201 802.11b USB dongles
- Orinoco ISA/PCMCIA 802.11b driver
- Aviator/Raytheon driver
- Planet WL3501 driver
- RNDIS USB 802.11b driver
Driver updates:
- Ethernet high-speed NICs:
- Intel (100G, ice, idpf):
- allow one by one port representors creation and removal
- add temperature and clock information reporting
- add get/set for ethtool's header split ringparam
- add again FW logging
- adds support switchdev hardware packet mirroring
- iavf: implement symmetric-xor RSS hash
- igc: add support for concurrent physical and free-running
timers
- i40e: increase the allowable descriptors
- nVidia/Mellanox:
- Preparation for Socket-Direct multi-dev netdev. That will
allow in future releases combining multiple PFs devices
attached to different NUMA nodes under the same netdev
- Broadcom (bnxt):
- TX completion handling improvements
- add basic ntuple filter support
- reduce MSIX vectors usage for MQPRIO offload
- add VXLAN support, USO offload and TX coalesce completion
for P7
- Marvell Octeon EP:
- xmit-more support
- add PF-VF mailbox support and use it for FW notifications
for VFs
- Wangxun (ngbe/txgbe):
- implement ethtool functions to operate pause param, ring
param, coalesce channel number and msglevel
- Netronome/Corigine (nfp):
- add flow-steering support
- support UDP segmentation offload
- Ethernet NICs embedded, slower, virtual:
- Xilinx AXI: remove duplicate DMA code adopting the dma engine
driver
- stmmac: add support for HW-accelerated VLAN stripping
- TI AM654x sw: add mqprio, frame preemption & coalescing
- gve: add support for non-4k page sizes.
- virtio-net: support dynamic coalescing moderation
- nVidia/Mellanox Ethernet datacenter switches:
- allow firmware upgrade without a reboot
- more flexible support for bridge flooding via the compressed
FID flooding mode
- Ethernet embedded switches:
- Microchip:
- fine-tune flow control and speed configurations in KSZ8xxx
- KSZ88X3: enable setting rmii reference
- Renesas:
- add jumbo frames support
- Marvell:
- 88E6xxx: add "eth-mac" and "rmon" stats support
- Ethernet PHYs:
- aquantia: add firmware load support
- at803x: refactor the driver to simplify adding support for more
chip variants
- NXP C45 TJA11xx: Add MACsec offload support
- Wifi:
- MediaTek (mt76):
- NVMEM EEPROM improvements
- mt7996 Extremely High Throughput (EHT) improvements
- mt7996 Wireless Ethernet Dispatcher (WED) support
- mt7996 36-bit DMA support
- Qualcomm (ath12k):
- support for a single MSI vector
- WCN7850: support AP mode
- Intel (iwlwifi):
- new debugfs file fw_dbg_clear
- allow concurrent P2P operation on DFS channels
- Bluetooth:
- QCA2066: support HFP offload
- ISO: more broadcast-related improvements
- NXP: better recovery in case receiver/transmitter get out of sync"
* tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1714 commits)
lan78xx: remove redundant statement in lan78xx_get_eee
lan743x: remove redundant statement in lan743x_ethtool_get_eee
bnxt_en: Fix RCU locking for ntuple filters in bnxt_rx_flow_steer()
bnxt_en: Fix RCU locking for ntuple filters in bnxt_srxclsrldel()
bnxt_en: Remove unneeded variable in bnxt_hwrm_clear_vnic_filter()
tcp: Revert no longer abort SYN_SENT when receiving some ICMP
Revert "mlx5 updates 2023-12-20"
Revert "net: stmmac: Enable Per DMA Channel interrupt"
ipvlan: Remove usage of the deprecated ida_simple_xx() API
ipvlan: Fix a typo in a comment
net/sched: Remove ipt action tests
net: stmmac: Use interrupt mode INTM=1 for per channel irq
net: stmmac: Add support for TX/RX channel interrupt
net: stmmac: Make MSI interrupt routine generic
dt-bindings: net: snps,dwmac: per channel irq
net: phy: at803x: make read_status more generic
net: phy: at803x: add support for cdt cross short test for qca808x
net: phy: at803x: refactor qca808x cable test get status function
net: phy: at803x: generalize cdt fault length function
net: ethernet: cortina: Drop TSO support
...
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Cross-merge networking fixes after downstream PR.
Conflicts:
drivers/net/ethernet/broadcom/bnxt/bnxt.c
e009b2efb7a8 ("bnxt_en: Remove mis-applied code from bnxt_cfg_ntp_filters()")
0f2b21477988 ("bnxt_en: Fix compile error without CONFIG_RFS_ACCEL")
https://lore.kernel.org/all/20240105115509.225aa8a2@canb.auug.org.au/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Cross-merge networking fixes after downstream PR.
Conflicts:
drivers/net/ethernet/intel/iavf/iavf_ethtool.c
3a0b5a2929fd ("iavf: Introduce new state machines for flow director")
95260816b489 ("iavf: use iavf_schedule_aq_request() helper")
https://lore.kernel.org/all/84e12519-04dc-bd80-bc34-8cf50d7898ce@intel.com/
drivers/net/ethernet/broadcom/bnxt/bnxt.c
c13e268c0768 ("bnxt_en: Fix HWTSTAMP_FILTER_ALL packet timestamp logic")
c2f8063309da ("bnxt_en: Refactor RX VLAN acceleration logic.")
a7445d69809f ("bnxt_en: Add support for new RX and TPA_START completion types for P7")
1c7fd6ee2fe4 ("bnxt_en: Rename some macros for the P5 chips")
https://lore.kernel.org/all/20231211110022.27926ad9@canb.auug.org.au/
drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
bd6781c18cb5 ("bnxt_en: Fix wrong return value check in bnxt_close_nic()")
84793a499578 ("bnxt_en: Skip nic close/open when configuring tstamp filters")
https://lore.kernel.org/all/20231214113041.3a0c003c@canb.auug.org.au/
drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
3d7a3f2612d7 ("net/mlx5: Nack sync reset request when HotPlug is enabled")
cecf44ea1a1f ("net/mlx5: Allow sync reset flow when BF MGT interface device is present")
https://lore.kernel.org/all/20231211110328.76c925af@canb.auug.org.au/
No adjacent changes.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add some warnings for using ethtool_sprintf() where a simple
ethtool_puts() would suffice.
The two cases are:
1) Use ethtool_sprintf() with just two arguments:
| ethtool_sprintf(&data, driver[i].name);
or
2) Use ethtool_sprintf() with a standalone "%s" fmt string:
| ethtool_sprintf(&data, "%s", driver[i].name);
The former may cause -Wformat-security warnings while the latter is just
not preferred. Both are safely in the category of warnings, not errors.
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Cross-merge networking fixes after downstream PR.
Conflicts:
drivers/net/ethernet/stmicro/stmmac/dwmac5.c
drivers/net/ethernet/stmicro/stmmac/dwmac5.h
drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
drivers/net/ethernet/stmicro/stmmac/hwif.h
37e4b8df27bc ("net: stmmac: fix FPE events losing")
c3f3b97238f6 ("net: stmmac: Refactor EST implementation")
https://lore.kernel.org/all/20231206110306.01e91114@canb.auug.org.au/
Adjacent changes:
net/ipv4/tcp_ao.c
9396c4ee93f9 ("net/tcp: Don't store TCP-AO maclen on reqsk")
7b0f570f879a ("tcp: Move TCP-AO bits from cookie_v[46]_check() to tcp_ao_syncookie().")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Set up build time warnings to safeguard against future header changes of
organized structs.
Warning includes:
1) whether all variables are still in the same cache group
2) whether all the cache groups have the sum of the members size (in the
maximum condition, including all members defined in configs)
The __cache_group* variables are ignored in kernel-doc check in the
various header files they appear in to enforce the cache groups.
Suggested-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Coco Li <lixiaoyan@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic cleanups from Arnd Bergmann:
"A series from Baoquan He cleans up the asm-generic/io.h to remove the
ioremap_uc() definition from everything except x86, which still needs
it for pre-PAT systems. This series notably contains a patch from
Jiaxun Yang that converts MIPS to use asm-generic/io.h like every
other architecture does, enabling future cleanups.
Some of my own patches fix -Wmissing-prototype warnings in
architecture specific code across several architectures. This is now
needed as the warning is enabled by default. There are still some
remaining warnings in minor platforms, but the series should catch
most of the widely used ones make them more consistent with one
another.
David McKay fixes a bug in __generic_cmpxchg_local() when this is used
on 64-bit architectures. This could currently only affect parisc64 and
sparc64.
Additional cleanups address from Linus Walleij, Uwe Kleine-König,
Thomas Huth, and Kefeng Wang help reduce unnecessary inconsistencies
between architectures"
* tag 'asm-generic-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
asm-generic: Fix 32 bit __generic_cmpxchg_local
Hexagon: Make pfn accessors statics inlines
ARC: mm: Make virt_to_pfn() a static inline
mips: remove extraneous asm-generic/iomap.h include
sparc: Use $(kecho) to announce kernel images being ready
arm64: vdso32: Define BUILD_VDSO32_64 to correct prototypes
csky: fix arch_jump_label_transform_static override
arch: add do_page_fault prototypes
arch: add missing prepare_ftrace_return() prototypes
arch: vdso: consolidate gettime prototypes
arch: include linux/cpu.h for trap_init() prototype
arch: fix asm-offsets.c building with -Wmissing-prototypes
arch: consolidate arch_irq_work_raise prototypes
hexagon: Remove CONFIG_HEXAGON_ARCH_VERSION from uapi header
asm/io: remove unnecessary xlate_dev_mem_ptr() and unxlate_dev_mem_ptr()
mips: io: remove duplicated codes
arch/*/io.h: remove ioremap_uc in some architectures
mips: add <asm-generic/io.h> including
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uapi headers should not expose CONFIG switches since they are not
available in userspace. Fix it in arch/hexagon/include/uapi/asm/user.h
by always defining the cs0 and cs1 entries instead of pad values.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
"Quite a lot of kexec work this time around. Many singleton patches in
many places. The notable patch series are:
- nilfs2 folio conversion from Matthew Wilcox in 'nilfs2: Folio
conversions for file paths'.
- Additional nilfs2 folio conversion from Ryusuke Konishi in 'nilfs2:
Folio conversions for directory paths'.
- IA64 remnant removal in Heiko Carstens's 'Remove unused code after
IA-64 removal'.
- Arnd Bergmann has enabled the -Wmissing-prototypes warning
everywhere in 'Treewide: enable -Wmissing-prototypes'. This had
some followup fixes:
- Nathan Chancellor has cleaned up the hexagon build in the series
'hexagon: Fix up instances of -Wmissing-prototypes'.
- Nathan also addressed some s390 warnings in 's390: A couple of
fixes for -Wmissing-prototypes'.
- Arnd Bergmann addresses the same warnings for MIPS in his series
'mips: address -Wmissing-prototypes warnings'.
- Baoquan He has made kexec_file operate in a top-down-fitting manner
similar to kexec_load in the series 'kexec_file: Load kernel at top
of system RAM if required'
- Baoquan He has also added the self-explanatory 'kexec_file: print
out debugging message if required'.
- Some checkstack maintenance work from Tiezhu Yang in the series
'Modify some code about checkstack'.
- Douglas Anderson has disentangled the watchdog code's logging when
multiple reports are occurring simultaneously. The series is
'watchdog: Better handling of concurrent lockups'.
- Yuntao Wang has contributed some maintenance work on the crash code
in 'crash: Some cleanups and fixes'"
* tag 'mm-nonmm-stable-2024-01-09-10-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (157 commits)
crash_core: fix and simplify the logic of crash_exclude_mem_range()
x86/crash: use SZ_1M macro instead of hardcoded value
x86/crash: remove the unused image parameter from prepare_elf_headers()
kdump: remove redundant DEFAULT_CRASH_KERNEL_LOW_SIZE
scripts/decode_stacktrace.sh: strip unexpected CR from lines
watchdog: if panicking and we dumped everything, don't re-enable dumping
watchdog/hardlockup: use printk_cpu_sync_get_irqsave() to serialize reporting
watchdog/softlockup: use printk_cpu_sync_get_irqsave() to serialize reporting
watchdog/hardlockup: adopt softlockup logic avoiding double-dumps
kexec_core: fix the assignment to kimage->control_page
x86/kexec: fix incorrect end address passed to kernel_ident_mapping_init()
lib/trace_readwrite.c:: replace asm-generic/io with linux/io
nilfs2: cpfile: fix some kernel-doc warnings
stacktrace: fix kernel-doc typo
scripts/checkstack.pl: fix no space expression between sp and offset
x86/kexec: fix incorrect argument passed to kexec_dprintk()
x86/kexec: use pr_err() instead of kexec_dprintk() when an error occurs
nilfs2: add missing set_freezable() for freezable kthread
kernel: relay: remove relay_file_splice_read dead code, doesn't work
docs: submit-checklist: remove all of "make namespacecheck"
...
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When the kernel log is acquired over a serial cable it is not uncommon for
the log to contain carriage return characters, in addition to the expected
line feeds.
When this output is feed into decode_stacktrace.sh, handle_line() fails to
strip the trailing ']' off the module name, which results in find_module()
not being able to find the referred to kernel module. This is reported to
the user as:
WARNING! Modules path isn't set, but is needed to parse this symbol
The solution is to reconfigure the serial port, or to strip the carriage
returns from the log, but this isn't obvious from the error reported by
the script.
Instead, make decode_stacktrace.sh more user friendly by stripping the
trailing carriage return.
Link: https://lkml.kernel.org/r/20231225-decode-stacktrace-cr-v1-1-9f306f38cdde@quicinc.com
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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When I use older version aarch64 objdump (2.24) to disassemble aarch64
vmlinux, I get the result like below. There is no space between sp and
offset.
ffff800008010000 <dw_apb_ictl_handle_irq>:
ffff800008010000: d503233f hint #0x19
ffff800008010004: a9bc7bfd stp x29, x30, [sp,#-64]!
ffff800008010008: 90011e60 adrp x0, ffff80000a3dc000 <num_ictlrs>
ffff80000801000c: 910003fd mov x29, sp
ffff800008010010: a9025bf5 stp x21, x22, [sp,#32]
When I use newer version aarch64 objdump (2.35), I get
the result like below.
There is a space between sp and offset.
ffff800008010000 <dw_apb_ictl_handle_irq>:
ffff800008010000: d503233f paciasp
ffff800008010004: a9bc7bfd stp x29, x30, [sp, #-64]!
ffff800008010008: 90011e60 adrp x0, ffff80000a3dc000 <num_ictlrs>
ffff80000801000c: 910003fd mov x29, sp
ffff800008010010: a9025bf5 stp x21, x22, [sp, #32]
Add no space support of regular expression for old version objdump.
Link: https://lkml.kernel.org/r/20231220073629.2658-1-Kuan-Ying.Lee@mediatek.com
Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Cc: Casper Li <casper.li@mediatek.com>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: Chinwen Chang <chinwen.chang@mediatek.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Qun-Wei Lin <qun-wei.lin@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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According to Documentation/process/submit-checklist.rst, checkstack does
not point out problems explicitly, but any one function that uses more
than 512 bytes on the stack is a candidate for change, hence it is better
to omit any stack frame sizes smaller than 512 bytes, just change
min_stack to 512 by default.
Link: https://lkml.kernel.org/r/20231219125008.23007-5-yangtiezhu@loongson.cn
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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For some unknown reason the regular expression for checkstack only matches
three digit numbers starting with the number "3", or any higher number.
Which means that it skips any stack sizes smaller than 304 bytes. This
makes the checkstack script a bit less useful than it could be.
Change the script to match any number. To be filtered out stack sizes can
be configured with the min_stack variable, which omits any stack frame
sizes smaller than 100 bytes by default.
This is similar with commit aab1f809d754 ("scripts/checkstack.pl: match
all stack sizes for s390").
Link: https://lkml.kernel.org/r/20231219125008.23007-4-yangtiezhu@loongson.cn
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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After commit 572220aad525 ("scripts/checkstack.pl: Add argument to print
stacks greather than value."), it is appropriate to add min_stack to the
usage comment, then the users know explicitly that "min_stack" can be
specified like "arch".
Link: https://lkml.kernel.org/r/20231219125008.23007-3-yangtiezhu@loongson.cn
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Patch series "Modify some code about checkstack".
This patch (of 5):
After commit cf8e8658100d ("arch: Remove Itanium (IA-64) architecture"),
the ia64 port has been removed from the kernel, so also remove the ia64
specific bits from the checkstack.pl script.
Link: https://lkml.kernel.org/r/20231219125008.23007-1-yangtiezhu@loongson.cn
Link: https://lkml.kernel.org/r/20231219125008.23007-2-yangtiezhu@loongson.cn
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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scripts/checkstack.pl lacks support for the loongarch architecture. Add
support to detect "addi.{w,d} $sp, $sp, -FRAME_SIZE" stack frame
generation instruction.
Link: https://lkml.kernel.org/r/MW4PR84MB314514273F0B7DBCC5E35A978192A@MW4PR84MB3145.NAMPRD84.PROD.OUTLOOK.COM
Signed-off-by: Youling Tang <tangyouling@kylinos.cn>
Acked-by: Huacai Chen <chenhuacai@loongson.cn>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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An example how to invoke decodecode for loongarch64:
$ echo 'Code: 380839f6 380831f9 28412bae <24000ca6>
004081ad 0014cb50 004083e8 02bff34c 58008e91' | \
ARCH=loongarch CROSS_COMPILE=loongarch64-linux-gnu- \
./scripts/decodecode
Code: 380839f6 380831f9 28412bae <24000ca6> 004081ad 0014cb50 004083e8 02bff34c 58008e91
All code
========
0: 380839f6 ldx.w $fp, $t3, $t2
4: 380831f9 ldx.w $s2, $t3, $t0
8: 28412bae ld.h $t2, $s6, 74(0x4a)
c:* 24000ca6 ldptr.w $a2, $a1, 12(0xc) <-- trapping instruction
10: 004081ad slli.w $t1, $t1, 0x0
14: 0014cb50 and $t4, $s3, $t6
18: 004083e8 slli.w $a4, $s8, 0x0
1c: 02bff34c addi.w $t0, $s3, -4(0xffc)
20: 58008e91 beq $t8, $t5, 140(0x8c) # 0xac
Code starting with the faulting instruction
===========================================
0: 24000ca6 ldptr.w $a2, $a1, 12(0xc)
4: 004081ad slli.w $t1, $t1, 0x0
8: 0014cb50 and $t4, $s3, $t6
c: 004083e8 slli.w $a4, $s8, 0x0
10: 02bff34c addi.w $t0, $s3, -4(0xffc)
14: 58008e91 beq $t8, $t5, 140(0x8c) # 0xa0
Link: https://lkml.kernel.org/r/MW4PR84MB3145B99B9677BB7887BB26CD8192A@MW4PR84MB3145.NAMPRD84.PROD.OUTLOOK.COM
Signed-off-by: Youling Tang <tangyouling@kylinos.cn>
Acked-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Over the years we went from > 1000 of warnings to under 100 earlier this
year, and I sent patches to address all the ones that I saw with compile
testing randcom configs on arm64, arm and x86 kernels. This is a really
useful warning, as it catches real bugs when there are mismatched
prototypes. In particular with kernel control flow integrity enabled,
those are no longer allowed.
I have done extensive testing to ensure that there are no new build errors
or warnings on any configuration of x86, arm and arm64 builds. I also
made sure that at least both the normal defconfig and an allmodconfig
build is clean for arc, csky, loongarch, m68k, microblaze, openrisc,
parisc, powerpc, riscv, s390, and xtensa, with the respective maintainers
doing most of the patches.
At this point, there are five architectures with a number of known
regressions: alpha, nios2, mips, sh and sparc. In the previous version of
this patch, I had turned off the missing prototype warnings for the 15
architectures that still had issues, but since there are only five left, I
think we can leave the rest to the maintainers (Cc'd here) as well.
Link: https://lkml.kernel.org/r/20231123110506.707903-7-arnd@kernel.org
Link: https://lore.kernel.org/lkml/20230810141947.1236730-1-arnd@kernel.org/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com> # RISC-V
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tudor Ambarus <tudor.ambarus@linaro.org>
Cc: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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1. When we crash on a page, we want to check what happened on this
page instead of skipping this page by try-except block. Thus, removing
the try-except block.
2. Remove redundant comma and print the task name properly.
Link: https://lkml.kernel.org/r/20231127070404.4192-4-Kuan-Ying.Lee@mediatek.com
Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: Chinwen Chang <chinwen.chang@mediatek.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Qun-Wei Lin <qun-wei.lin@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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After stackdepot evicting support patchset[1], we rename pool_index to
pools_num.
To avoid from the below issue, we rename consistently in
gdb scripts.
Python Exception <class 'gdb.error'>: No symbol "pool_index" in current
context.
Error occurred in Python: No symbol "pool_index" in current context.
[1] https://lore.kernel.org/linux-mm/cover.1700502145.git.andreyknvl@google.com/
Link: https://lkml.kernel.org/r/20231129065142.13375-3-Kuan-Ying.Lee@mediatek.com
Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: Chinwen Chang <chinwen.chang@mediatek.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Qun-Wei Lin <qun-wei.lin@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Some of the more common spelling mistakes and typos that I've found while
fixing up spelling mistakes in the kernel over the past couple of
releases.
Link: https://lkml.kernel.org/r/20231122104037.1770749-1-colin.i.king@gmail.com
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Sort output by size and in addition by function name. This increases
readability for cases where there are many functions with the same stack
usage.
Link: https://lkml.kernel.org/r/20231120183719.2188479-3-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Cc: Maninder Singh <maninder1.s@samsung.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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ALLOW_ERROR_INJECTION macro (just like EXPORT_SYMBOL) can immediately
follow a function it annotates.
Link: https://lkml.kernel.org/r/20231109075147.2779461-1-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Acked-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com> (maintainer:CHECKPATCH)
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com> (reviewer:CHECKPATCH)
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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When parsing emails from .yaml files in particular, stray punctuation
such as a leading '-' can end up in the name. For example, consider a
common YAML section such as:
maintainers:
- devicetree@vger.kernel.org
This would previously be processed by get_maintainer.pl as:
- <devicetree@vger.kernel.org>
Make the logic in clean_file_emails more robust by deleting any
sub-names which consist of common single punctuation marks before
proceeding to the best-effort name extraction logic. The output is then
correct:
devicetree@vger.kernel.org
Some additional comments are added to the function to make things
clearer to future readers.
Link: https://lore.kernel.org/all/0173e76a36b3a9b4e7f324dd3a36fd4a9757f302.camel@perches.com/
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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