struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-4-78399683ca38@linaro.org
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-3-78399683ca38@linaro.org
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-2-78399683ca38@linaro.org
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-1-78399683ca38@linaro.org
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
The Blaize BLZP1600 GPIO controller is only present on BLaize BLZP1600
SoCs. Hence add a dependency on ARCH_BLAIZE, to prevent asking the user
about this driver when configuring a kernel without Blaize platform
support.
Fixes: 602ae04f56542d8e ("gpio: Enable Blaize BLZP1600 GPIO support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Nikolaos Pasaloukos <nikolaos.pasaloukos@blaize.com>
Link: https://lore.kernel.org/r/a75af4b623579a193b4a59350c063969aabb5b71.1744190524.git.geert+renesas@glider.be
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
The kernel doc for gpio-aggregator configfs interface, which was recently
added, states that users should not be able to create an aggregator with a
name prefixed by "_sysfs" via configfs. However, it was found that this
guard does not function as expected (thanks to Dan Carpenter for
identifying and fixing the issue).
Add a test case to verify the guard.
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/20250412150119.1461023-1-koichiro.den@canonical.com
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Call gpio_aggregator_free_lines() before returning on this error path.
Fixes: 83c8e3df642f ("gpio: aggregator: expose aggregator created via legacy sysfs to configfs")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/e023bfe52509ce1bef6209ec7c47e99279c551dd.1744452787.git.dan.carpenter@linaro.org
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
The error handling in gpio_aggregator_parse() was re-written. It now
returns success if there are no GPIOs. Restore the previous behavior
and return -EINVAL instead.
Fixes: 83c8e3df642f ("gpio: aggregator: expose aggregator created via legacy sysfs to configfs")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/9dcd5fda7a3819e896d9eee4156e7c46c9a64595.1744452787.git.dan.carpenter@linaro.org
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
The gpio_aggregator_line_alloc() function returns error pointers, but
the callers check for NULL. Update the error checking in the callers.
Fixes: 83c8e3df642f ("gpio: aggregator: expose aggregator created via legacy sysfs to configfs")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/cc71d8cf6e9bb4bb8cd9ae5050100081891d9345.1744452787.git.dan.carpenter@linaro.org
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
This code is intended to reject strings that start with "_sysfs" but the
strcmp() limit is wrong so checks the whole string instead of the prefix.
Fixes: 83c8e3df642f ("gpio: aggregator: expose aggregator created via legacy sysfs to configfs")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/30210ed77b40b4b6629de659cb56b9ec7832c447.1744452787.git.dan.carpenter@linaro.org
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Add a set of tests for gpio-aggregator module. This test covers both
pre-existing new_device/delete_device interface and new configfs-based
interface.
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/20250407043019.4105613-10-koichiro.den@canonical.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
For aggregators initialized via configfs, write 1 to 'live' waits for
probe completion and returns an error if the probe fails, unlike the
legacy sysfs interface, which is asynchronous.
Since users control the liveness of the aggregator device and might be
editing configurations while 'live' is 0, deferred probing is both
unnatural and unsafe.
Cancel deferred probe for purely configfs-based aggregators when probe
fails.
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/20250407043019.4105613-8-koichiro.den@canonical.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Expose settings for aggregators created using the sysfs 'new_device'
interface to configfs. Once written to 'new_device', an "_sysfs.<N>" path
appears in the configfs regardless of whether the probe succeeds.
Consequently, users can no longer use that prefix for custom GPIO
aggregator names. The 'live' attribute changes to 1 when the probe
succeeds and the GPIO forwarder is instantiated.
Note that the aggregator device created via sysfs is asynchronous, i.e.
writing into 'new_device' returns without waiting for probe completion,
and the probe may succeed, fail, or eventually succeed via deferred
probe. Thus, the 'live' attribute may change from 0 to 1 asynchronously
without notice. So, editing key/offset/name while it's waiting for
deferred probe is prohibited.
The configfs auto-generation relies on create_default_group(), which
inherently prohibits rmdir(2). To align with the limitation, this commit
also prohibits mkdir(2) for them. When users want to change the number
of lines for an aggregator initialized via 'new_device', they need to
tear down the device using 'delete_device' and reconfigure it from
scratch. This does not break previous behavior; users of legacy sysfs
interface simply gain additional almost read-only configfs exposure.
Still, users can write to the 'live' attribute to toggle the device
unless it's waiting for deferred probe. So once probe succeeds, they can
deactivate it in the same manner as the devices initialized via
configfs.
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/20250407043019.4105613-7-koichiro.den@canonical.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Rename the local variable 'name' in gpio_aggregator_parse() to 'key'
because struct gpio_aggregator_line now uses the 'name' field for the
custom line name and the local variable actually represents a 'key'.
This change prepares for the next but one commit.
No functional change.
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/20250407043019.4105613-6-koichiro.den@canonical.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
The existing sysfs 'new_device' interface has several limitations:
* No way to determine when GPIO aggregator creation is complete.
* No way to retrieve errors when creating a GPIO aggregator.
* No way to trace a GPIO line of an aggregator back to its
corresponding physical device.
* The 'new_device' echo does not indicate which virtual gpiochip<N>
was created.
* No way to assign names to GPIO lines exported through an aggregator.
Introduce the new configfs interface for gpio-aggregator to address
these limitations. It provides a more streamlined, modern, and
extensible configuration method. For backward compatibility, the
'new_device' interface and its behavior is retained for now.
This commit implements basic functionalities:
/config/gpio-aggregator/<name-of-your-choice>/
/config/gpio-aggregator/<name-of-your-choice>/live
/config/gpio-aggregator/<name-of-your-choice>/dev_name
/config/gpio-aggregator/<name-of-your-choice>/<lineY>/
/config/gpio-aggregator/<name-of-your-choice>/<lineY>/key
/config/gpio-aggregator/<name-of-your-choice>/<lineY>/offset
/config/gpio-aggregator/<name-of-your-choice>/<lineY>/name
Basic setup flow is:
1. Create a directory for a GPIO aggregator.
2. Create subdirectories for each line you want to instantiate.
3. In each line directory, configure the key and offset.
The key/offset semantics are as follows:
* If offset is >= 0:
- key specifies the name of the chip this GPIO belongs to
- offset specifies the line offset within that chip.
* If offset is <0:
- key needs to specify the GPIO line name.
4. Return to the aggregator's root directory and write '1' to the live
attribute.
For example, the command in the existing kernel doc:
echo 'e6052000.gpio 19 e6050000.gpio 20-21' > new_device
is equivalent to:
mkdir /sys/kernel/config/gpio-aggregator/<custom-name>
# Change <custom-name> to name of your choice (e.g. "aggr0")
cd /sys/kernel/config/gpio-aggregator/<custom-name>
mkdir line0 line1 line2 # Only "line<Y>" naming allowed.
echo e6052000.gpio > line0/key
echo 19 > line0/offset
echo e6050000.gpio > line1/key
echo 20 > line1/offset
echo e6050000.gpio > line2/key
echo 21 > line2/offset
echo 1 > live
The corresponding gpio_device id can be identified as follows:
cd /sys/kernel/config/gpio-aggregator/<custom-name>
ls -d /sys/devices/platform/`cat dev_name`/gpiochip*
Also, via configfs, custom GPIO line name can be set like this:
cd /sys/kernel/config/gpio-aggregator/<custom-name>
echo "abc" > line1/name
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/20250407043019.4105613-5-koichiro.den@canonical.com
[Bartosz: remove stray newlines]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Prepare for the upcoming configfs interface. These functions will be
used by both the existing sysfs interface and the new configfs
interface, reducing code duplication.
No functional change.
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/20250407043019.4105613-4-koichiro.den@canonical.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Unify function names to use gpio_aggregator_ prefix (except GPIO
forwarder implementations, which remain unchanged in subsequent
commits). While at it, rename the pre-existing gpio_aggregator_free() to
gpio_aggregator_destory(), since that name will be used by new
alloc/free functions introduced in the next commit, for which the name
is more appropriate.
No functional change.
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/20250407043019.4105613-3-koichiro.den@canonical.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reorder functions in drivers/gpio/gpio-aggregator.c to prepare for the
configfs-based interface additions in subsequent commits. Arrange the
code so that the configfs implementations will appear above the existing
sysfs-specific code, since the latter will partly depend on the configfs
interface implementations when it starts to expose the settings to
configfs.
The order in drivers/gpio/gpio-aggregator.c will be as follows:
* Basic gpio_aggregator/gpio_aggregator_line representations
* Common utility functions
* GPIO Forwarder implementations
* Configfs interface implementations
* Sysfs interface implementations
* Platform device implementations
* Module init/exit implementations
This separate commit ensures a clean diff for the subsequent commits.
No functional change.
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Link: https://lore.kernel.org/r/20250407043019.4105613-2-koichiro.den@canonical.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
gpio: provide gpiod_is_equal()
-----BEGIN PGP SIGNATURE-----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=DTEb
-----END PGP SIGNATURE-----
Merge tag 'gpiod-is-equal-for-v6.16-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/brgl/linux into gpio/for-next
Immutable tag for the regulator tree to pull from
gpio: provide gpiod_is_equal()
There are users in the kernel that directly compare raw GPIO descriptor
pointers in order to determine whether they refer to the same physical
GPIO pin. This accidentally works like this but is not guaranteed by any
API contract. Let's provide a comparator function that hides the actual
logic.
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250407-gpiod-is-equal-v1-1-7d85f568ae6e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
gpio irq which using three-cell scheme should always call
instance_match() function to find the correct irqdomain.
The select() function will be called with !DOMAIN_BUS_ANY,
so for specific gpio irq driver, it need to set bus token
explicitly, something like:
irq_domain_update_bus_token(girq->domain, DOMAIN_BUS_WIRED);
Signed-off-by: Yixun Lan <dlan@gentoo.org>
Link: https://lore.kernel.org/r/20250408-04-gpio-irq-threecell-v4-1-fd170d5e2d2b@gentoo.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
-----BEGIN PGP SIGNATURE-----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=pJLt
-----END PGP SIGNATURE-----
Merge tag 'irqdomain-04-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into gpio/for-next
Stable tag for the GPIO tree to pull from
Blaize BLZP1600 GPIO controller is provided by VeriSilicon
Microelectronics based on the GPIO APB v0.2 design. It has 32
input/output ports which can be configured as edge or level
triggered interrupts. It also provides a de-bounce feature.
This controller is used on the Blaize BLZP1600 SoC.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Nikolaos Pasaloukos <nikolaos.pasaloukos@blaize.com>
Link: https://lore.kernel.org/r/20250327-kernel-upstreaming-add_gpio_support-v2-2-bbe51f8d66da@blaize.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This is a custom silicon GPIO driver provided by VeriSilicon
Microelectronics. It has 32 input/output ports which can be
configured as edge or level triggered interrupts. It also provides
a de-bounce feature.
This controller is used on the Blaize BLZP1600 SoC.
Signed-off-by: Nikolaos Pasaloukos <nikolaos.pasaloukos@blaize.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250327-kernel-upstreaming-add_gpio_support-v2-1-bbe51f8d66da@blaize.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
The Toradex ecgpiol16 is a 16-bit I2C I/O expander implemented using a
small MCU.
Its register interface and behavior are compatible with the PCAL6416.
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250331072644.17921-1-francesco@dolcini.it
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
DTS example in the bindings should be indented with 2- or 4-spaces and
aligned with opening '- |', so correct any differences like 3-spaces or
mixtures 2- and 4-spaces in one binding. While re-indenting, drop
unused labels.
No functional changes here, but saves some comments during reviews of
new patches built on existing code.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Sander Vanheule <sander@svanheule.net>
Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Link: https://lore.kernel.org/r/20250324125326.82270-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Add new function *_twothreecell() to extend support to parse three-cell
interrupts which encoded as <instance hwirq irqflag>, the translate
function will retrieve irq number and flag from last two cells.
This API will be used in gpio irq driver which need to work with
two or three cells cases.
Signed-off-by: Yixun Lan <dlan@gentoo.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250326-04-gpio-irq-threecell-v3-1-aab006ab0e00@gentoo.org
This is prepare patch for switching s5m8767 regulator driver to
use GPIO descriptor. DTS for exynos5250 spring incorrectly specifies
"active low" polarity for the DVS and DS line. But per datasheet,
they are actually active high. So add polarity quirk for it.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250327004945.563765-1-peng.fan@oss.nxp.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Some drivers as well as the character device and sysfs code check
whether the line actually is in output mode before allowing the user to
set a value.
However, GPIO value setters now return integer values and can indicate
failures. This allows us to move these checks into the core code.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250311-gpio-set-check-output-v1-1-d971bca9e6fa@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
The "real" linux/types.h UAPI header gracefully degrades to a NOOP when
included from assembly code.
Mirror this behaviour in the tools/ variant.
Test for __ASSEMBLER__ over __ASSEMBLY__ as the former is provided by the
toolchain automatically.
Reported-by: Mark Brown <broonie@kernel.org>
Closes: https://lore.kernel.org/lkml/af553c62-ca2f-4956-932c-dd6e3a126f58@sirena.org.uk/
Fixes: c9fbaa879508 ("selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Link: https://patch.msgid.link/20250321-uapi-consistency-v1-1-439070118dc0@linutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Support up to 8192 processors
Add cpuidle governor debug telemetry, disabled by default
Update default output to exclude cpuidle invocation counts
Bug fixes
Signed-off-by: Len Brown <len.brown@intel.com>
Create "pct_idle" counter group, the sofware notion of residency
so it can now be singled out, independent of other counter groups.
Create "cpuidle" group, the cpuidle invocation counts.
Disable "cpuidle", by default.
Create "swidle" = "cpuidle" + "pct_idle".
Undocument "sysfs", the old name for "swidle", but keep it working
for backwards compatibilty.
Create "hwidle", all the HW idle counters
Modify "idle", enabled by default
"idle" = "hwidle" + "pct_idle" (and now excludes "cpuidle")
Signed-off-by: Len Brown <len.brown@intel.com>
... and don't error out so hard on missing module descriptions.
Before commit 6c6c1fc09de3 ("modpost: require a MODULE_DESCRIPTION()")
we used to warn about missing module descriptions, but only when
building with extra warnigns (ie 'W=1').
After that commit the warning became an unconditional hard error.
And it turns out not all modules have been converted despite the claims
to the contrary. As reported by Damian Tometzki, the slub KUnit test
didn't have a module description, and apparently nobody ever really
noticed.
The reason nobody noticed seems to be that the slub KUnit tests get
disabled by SLUB_TINY, which also ends up disabling a lot of other code,
both in tests and in slub itself. And so anybody doing full build tests
didn't actually see this failre.
So let's disable SLUB_TINY for build-only tests, since it clearly ends
up limiting build coverage. Also turn the missing module descriptions
error back into a warning, but let's keep it around for non-'W=1'
builds.
Reported-by: Damian Tometzki <damian@riscv-rocks.de>
Link: https://lore.kernel.org/all/01070196099fd059-e8463438-7b1b-4ec8-816d-173874be9966-000000@eu-central-1.amazonses.com/
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Fixes: 6c6c1fc09de3 ("modpost: require a MODULE_DESCRIPTION()")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Probe cpuidle "sysfs" residency and counts separately,
since soon we will make one disabled on, and the
other disabled off.
Clarify that some BIC (build-in-counters) are actually "groups".
since we're about to re-name some of those groups.
no functional change.
Signed-off-by: Len Brown <len.brown@intel.com>
Do fflush() to discard the buffered data, before each read of the
graphics sysfs knobs.
Fixes: ba99a4fc8c24 ("tools/power turbostat: Remove unnecessary fflush() call")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Document that on Intel Granite Rapids Systems,
Uncore domains 0-2 are CPU domains, and
uncore domains 3-4 are IO domains.
Signed-off-by: Len Brown <len.brown@intel.com>
The CoreThr column displays total thermal throttling events
since boot time.
Change it to report events during the measurement interval.
This is more useful for showing a user the current conditions.
Total events since boot time are still available to the user via
/sys/devices/system/cpu/cpu*/thermal_throttle/*
Document CoreThr on turbostat.8
Fixes: eae97e053fe30 ("turbostat: Support thermal throttle count print")
Reported-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Chen Yu <yu.c.chen@intel.com>
On systems with >= 1024 cpus (in my case 1152), turbostat fails with the error output:
"turbostat: /sys/fs/cgroup/cpuset.cpus.effective: cpu str malformat 0-1151"
A similar error appears with the use of turbostat --cpu when the inputted cpu
range contains a cpu number >= 1024:
# turbostat -c 1100-1151
"--cpu 1100-1151" malformed
...
Both errors are caused by parse_cpu_str() reaching its limit of CPU_SUBSET_MAXCPUS.
It's a good idea to limit the maximum cpu number being parsed, but 1024 is too low.
For a small increase in compute and allocated memory, increasing CPU_SUBSET_MAXCPUS
brings support for parsing cpu numbers >= 1024.
Increase CPU_SUBSET_MAXCPUS to 8192, a common setting for CONFIG_NR_CPUS on x86_64.
Signed-off-by: Justin Ernst <justin.ernst@hpe.com>
Signed-off-by: Len Brown <len.brown@intel.com>
1) Convert all del_timer[_sync]() instances over to the new
timer_delete[_sync]() API and remove the legacy wrappers.
Conversion was done with coccinelle plus some manual fixups as
coccinelle chokes on scoped_guard().
2) The final cleanup of the hrtimer_init() to hrtimer_setup() conversion.
This has been delayed to the end of the merge window, so that all
patches which have been merged through other trees are in mainline and
all new users are catched.
Doing this right before rc1 ensures that new code which is merged post rc1
is not introducing new instances of the original functionality.
-----BEGIN PGP SIGNATURE-----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=8Ftq
-----END PGP SIGNATURE-----
Merge tag 'timers-cleanups-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer cleanups from Thomas Gleixner:
"A set of final cleanups for the timer subsystem:
- Convert all del_timer[_sync]() instances over to the new
timer_delete[_sync]() API and remove the legacy wrappers.
Conversion was done with coccinelle plus some manual fixups as
coccinelle chokes on scoped_guard().
- The final cleanup of the hrtimer_init() to hrtimer_setup()
conversion.
This has been delayed to the end of the merge window, so that all
patches which have been merged through other trees are in mainline
and all new users are catched.
Doing this right before rc1 ensures that new code which is merged post
rc1 is not introducing new instances of the original functionality"
* tag 'timers-cleanups-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tracing/timers: Rename the hrtimer_init event to hrtimer_setup
hrtimers: Rename debug_init_on_stack() to debug_setup_on_stack()
hrtimers: Rename debug_init() to debug_setup()
hrtimers: Rename __hrtimer_init_sleeper() to __hrtimer_setup_sleeper()
hrtimers: Remove unnecessary NULL check in hrtimer_start_range_ns()
hrtimers: Make callback function pointer private
hrtimers: Merge __hrtimer_init() into __hrtimer_setup()
hrtimers: Switch to use __htimer_setup()
hrtimers: Delete hrtimer_init()
treewide: Convert new and leftover hrtimer_init() users
treewide: Switch/rename to timer_delete[_sync]()
1) A treewide cleanup for the irq_domain code, which makes the naming
consistent and gets rid of the original oddity of naming domains
'host'.
This is a trivial mechanical change and is done late to ensure that
all instances have been catched and new code merged post rc1 wont
reintroduce new instances.
2) A trivial consistency fix in the migration code
The recent introduction of irq_force_complete_move() in the core
code, causes a problem for the nostalgia crowd who maintains ia64 out
of tree.
The code assumes that hierarchical interrupt domains are enabled and
dereferences irq_data::parent_data unconditionally. That works in mainline
because both architectures which enable that code have hierarchical domains
enabled. Though it breaks the ia64 build, which enables the functionality,
but does not have hierarchical domains.
While it's not really a problem for mainline today, this
unconditional dereference is inconsistent and trivially fixable by
using the existing helper function irqd_get_parent_data(), which has
the appropriate #ifdeffery in place.
-----BEGIN PGP SIGNATURE-----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=lhoB
-----END PGP SIGNATURE-----
Merge tag 'irq-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more irq updates from Thomas Gleixner:
"A set of updates for the interrupt subsystem:
- A treewide cleanup for the irq_domain code, which makes the naming
consistent and gets rid of the original oddity of naming domains
'host'.
This is a trivial mechanical change and is done late to ensure that
all instances have been catched and new code merged post rc1 wont
reintroduce new instances.
- A trivial consistency fix in the migration code
The recent introduction of irq_force_complete_move() in the core
code, causes a problem for the nostalgia crowd who maintains ia64
out of tree.
The code assumes that hierarchical interrupt domains are enabled
and dereferences irq_data::parent_data unconditionally. That works
in mainline because both architectures which enable that code have
hierarchical domains enabled. Though it breaks the ia64 build,
which enables the functionality, but does not have hierarchical
domains.
While it's not really a problem for mainline today, this
unconditional dereference is inconsistent and trivially fixable by
using the existing helper function irqd_get_parent_data(), which
has the appropriate #ifdeffery in place"
* tag 'irq-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/migration: Use irqd_get_parent_data() in irq_force_complete_move()
irqdomain: Stop using 'host' for domain
irqdomain: Rename irq_get_default_host() to irq_get_default_domain()
irqdomain: Rename irq_set_default_host() to irq_set_default_domain()
The recent change to prevent that time goes backwards for the coarse time
getters due to immediate multiplier adjustments via adjtimex(), changed the
way how the timekeeping core treats that.
That change result in a regression on the adjtimex() side, which is user
space visible:
1) The forwarding of the base time moves the update out of the original
period and establishes a new one. That's changing the behaviour of the
[PF]LL control, which user space expects to be applied periodically.
2) The clearing of the accumulated NTP error due to #1, changes the
behaviour as well.
It was tried to delay the multiplier/frequency update to the next tick, but
that did not solve the problem as userspace expects that the multiplier or
frequency updates are in effect, when the syscall returns.
There is a different solution for the coarse time problem available, so
revert the offending commit to restore the existing adjtimex() behaviour.
-----BEGIN PGP SIGNATURE-----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=0MEH
-----END PGP SIGNATURE-----
Merge tag 'timers-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A revert to fix a adjtimex() regression:
The recent change to prevent that time goes backwards for the coarse
time getters due to immediate multiplier adjustments via adjtimex(),
changed the way how the timekeeping core treats that.
That change result in a regression on the adjtimex() side, which is
user space visible:
1) The forwarding of the base time moves the update out of the
original period and establishes a new one. That's changing the
behaviour of the [PF]LL control, which user space expects to be
applied periodically.
2) The clearing of the accumulated NTP error due to #1, changes the
behaviour as well.
An attempt to delay the multiplier/frequency update to the next tick
did not solve the problem as userspace expects that the multiplier or
frequency updates are in effect, when the syscall returns.
There is a different solution for the coarse time problem available,
so revert the offending commit to restore the existing adjtimex()
behaviour"
* tag 'timers-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "timekeeping: Fix possible inconsistencies in _COARSE clockids"
- sh: defconfig: Drop obsolete CONFIG_NET_CLS_TCINDEX
- sh: Align .bss section padding to 8-byte boundary
-----BEGIN PGP SIGNATURE-----
iQIzBAABCAAdFiEEYv+KdYTgKVaVRgAGdCY7N/W1+RMFAmfyN9UACgkQdCY7N/W1
+ROSHhAAksw50el3n3Bs0vEGRlTvPYnnUkbxtg1kUgyr7NGGhhFhimiDsXdrGuN/
iwtngYjp0wrNljIS0lSWX5p+AolC92cOskXG1vZK1JBf131LqMvdxUcOLmT32UCY
apVnB77vI41apEozyLEiaydJOIye+ulP7vaxDeb/v6tZeWbtvIK664pHykoAn2Nw
IJm/DvuAg6cYT4DcHldLNM/yQ7lF7tfzPnc2fENnRbKSiNrbpebNjbNGxyQgHs+6
SXYG3RwtP8Ev+f19MSg92h+PmLK80+8i3TsCaQ11QGTRnCz0m+uM/r666k2SGfwf
nJRC642FKxiDLaloScbY0X9xjC8R9YjYhOLp2jlkEyYvwh3iSdKvfw4xDQo50iAF
IP+TRWtIYLNpIw6HDE1QcCafzIAD+yRNE5PRit4oJyEeCe2BskPet462riBDBt8q
z6fo1svh+lHdapj7Eta4h1bw2y9GriMz64NDyqh2gubYjn5Yj0T1RmhuOMOn71uh
SHVyQym25+/XLZInTWFfLaUSz3H3iJW5DZ/7adMdLg5+xMJ4MZWdUuaEf1bhU7Xg
+mdHPEXavQa4mJ/guHP9KCk+90UrhOItz4sgnWAxPkKJtf8NpMUQlyrlXVyhf8as
lRBt/F8pHHWzbWQYCN5UfkbAE9wTXz7KFegt4RmeQCH1xOS+Tjs=
=96YN
-----END PGP SIGNATURE-----
Merge tag 'sh-for-v6.15-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux
Pull sh updates from John Paul Adrian Glaubitz:
"One important fix and one small configuration update.
The first patch by Artur Rojek fixes an issue with the J2 firmware
loader not being able to find the location of the device tree blob due
to insufficient alignment of the .bss section which rendered J2 boards
unbootable.
The second patch by Johan Korsnes updates the defconfigs on sh to drop
the CONFIG_NET_CLS_TCINDEX configuration option which became obsolete
after 8c710f75256b ("net/sched: Retire tcindex classifier").
Summary:
- sh: defconfig: Drop obsolete CONFIG_NET_CLS_TCINDEX
- sh: Align .bss section padding to 8-byte boundary"
* tag 'sh-for-v6.15-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
sh: defconfig: Drop obsolete CONFIG_NET_CLS_TCINDEX
sh: Align .bss section padding to 8-byte boundary
