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There are valid cases when two nodes can have the same address. For
example, in Exynos SoCs there is USI IP-core, which might be configured
to provide UART, SPI or I2C block, all of which having the same base
register address. But only one can be enabled at a time. That looks like
this:
usi@138200c0 {
serial@13820000 {
status = "okay";
};
i2c@13820000 {
status = "disabled";
};
};
When running "make dt_binding_check", it reports next warning:
Warning (unique_unit_address):
/example-0/usi@138200c0/serial@13820000:
duplicate unit-address (also used in node
/example-0/usi@138200c0/i2c@13820000)
Disable "unique_unit_address" in DTC_FLAGS to suppress warnings like
that, but enable "unique_unit_address_if_enabled" warning, so that dtc
still reports a warning when two enabled nodes are having the same
address.
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reported-by: Rob Herring <robh@kernel.org>
Suggested-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211203183517.11390-1-semen.protsenko@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>
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The "interrupts" property in the example looks weird:
- The type is not in the last cell,
- Level interrupts don't work well with gpio-keys, as they keep the
interrupt asserted as long as the key is pressed, causing an
interrupt storm.
Use a more realistic falling-edge interrupt instead.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/47ecd2d8efcf09f8ab47de87a7bcfafc82208776.1638538079.git.geert+renesas@glider.be
Signed-off-by: Rob Herring <robh@kernel.org>
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This binding was already documented in phy.txt, commit 252ae5330daa
("Documentation: devicetree: Add PHY no lane swap binding"), but got
accidently removed during YAML conversion in commit d8704342c109
("dt-bindings: net: Add a YAML schemas for the generic PHY options").
Note: 'enet-phy-lane-no-swap' and the absence of 'enet-phy-lane-swap' are
not identical, as the former one disable this feature, while the latter
one doesn't change anything.
Fixes: d8704342c109 ("dt-bindings: net: Add a YAML schemas for the generic PHY options")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20211130082756.713919-1-alexander.stein@ew.tq-group.com
Signed-off-by: Rob Herring <robh@kernel.org>
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a) since d73df887b6b8 ("sched/fair: Add document for burstable CFS bandwidth")
[cpu.cfs_quota_us: the total available run-time within a period (in] shoud be removed,
let's delete it.
b) Add a period.
c) fix a build warning:
linux-next/Documentation/scheduler/sched-bwc.rst:243: WARNING: Inline emphasis
start-string without end-string.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/163a4dde20b8c4b68d668977a668e281d18fcf92.1638517064.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Translate .../scheduler/sched-bwc.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/e5f96f741012af6d4c4a27e7d1aab076ddffd322.1638517064.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Translate .../scheduler/sched-arch.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/f9e66ba8920bc1bb3f1d67044f64712fa30db7c9.1638517064.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Translate .../scheduler/completion.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Acked-by: Tang Yizhou <tangyizhou@huawei.com>
Link: https://lore.kernel.org/r/47b6fd1f277058dfb8d06dd3d33fedc2ef55fcbb.1638777809.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Translate .../scheduler/index.rst into Chinese.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/e015c61f64fc0d4d3a49f0e85e925f00df433721.1638777809.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Pull documentation fixes from Jonathan Corbet:
"A few important documentation fixes, including breakage that comes
with v1.0 of the ReadTheDocs theme"
* tag 'docs-5.16-3' of git://git.lwn.net/linux:
Documentation: Add minimum pahole version
Documentation/process: fix self reference
docs: admin-guide/blockdev: Remove digraph of node-states
docs: conf.py: fix support for Readthedocs v 1.0.0
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Pull spi fix from Mark Brown:
"Just one trivial update adding a device ID to the DT bindings"
* tag 'spi-fix-v5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: spi-rockchip: Add rk3568-spi compatible
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There are some syntax errors in this document.
Also make it more readable.
Signed-off-by: Tang Yizhou <tangyizhou@huawei.com>
Acked-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/20211202050816.12240-1-tangyizhou@huawei.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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These Chinese translations are easier to understand.
Also add proofreader.
Signed-off-by: Tang Yizhou <tangyizhou@huawei.com>
Acked-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/20211202142312.20052-1-tangyizhou@huawei.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Add Epoch Subsystem (EPSS) L3 provider support on SM7280 SoCs.
* icc-sc7280
dt-bindings: interconnect: Add EPSS L3 DT binding on SC7280
interconnect: qcom: Add EPSS L3 support on SC7280
Link: https://lore.kernel.org/r/1634812857-10676-1-git-send-email-okukatla@codeaurora.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
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Merge series from Trevor Wu <trevor.wu@mediatek.com>:
This series of patches adds support for memory-region assignment, so the
access region of DMA engine could be restricted.
Patches are based on broonie tree "for-next" branch.
Trevor Wu (2):
ASoC: mediatek: mt8195: support reserved memory assignment
dt-bindings: mediatek: mt8195: add memory-region property
.../devicetree/bindings/sound/mt8195-afe-pcm.yaml | 8 ++++++++
sound/soc/mediatek/mt8195/mt8195-afe-pcm.c | 7 +++++++
2 files changed, 15 insertions(+)
--
2.18.0
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Backmerge drm-next to pull in:
8f59ee9a570c ("drm/msm/dsi: Adjust probe order")
Signed-off-by: Rob Clark <robdclark@chromium.org>
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ASoC: Fixes for v5.16
A relatively large collection of updates, the size is increased quite a
bit by there being some repetitive changes for similar issues that occur
multiple times with both notifying control value changes and runtime PM.
The Rockchip update looks at first glance like a cleanup but fixes
instantiation of the hardware on some systems.
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The R-Car MIPI DSI/CSI-2 TX is embedded in the Renesas R-Car V3U SoC. It
can operate in either DSI or CSI-2 mode, with up to four data lanes.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add bindings and update documentation for clock rpmh driver on SM8450.
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211201072310.3968679-3-vkoul@kernel.org
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Add a required property "memory-region", which is used to specify memory
for DMA usage.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20211130053905.28470-3-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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1. adsp phandle can be assigned to the machine driver if adsp is enabled.
2. dai-link supported in the sound card can be specified from DTS.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20211129141057.12422-5-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch adds the description of model property used to specify card
name from dts.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211129141057.12422-3-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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While converting bindings to dtschema, the buck regulators lost
"op_mode" property. The "op_mode" is a valid property for all
regulators (both LDOs and bucks), so add it.
Reported-by: Rob Herring <robh@kernel.org>
Fixes: fab58debc137 ("regulator: dt-bindings: samsung,s5m8767: convert to dtschema")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20211206124306.14006-1-krzysztof.kozlowski@canonical.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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We need the tty/serial driver fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We need the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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i.Core STM32MP1 is an EDIMM SoM based on STM32MP157A from Engicam.
C.TOUCH 2.0 is a general purpose carrier board with capacitive
touch interface support.
10.1" OF is a capacitive touch 10.1" Open Frame panel solutions.
i.Core STM32MP1 needs to mount on top of C.TOUCH 2.0 carrier with
pluged 10.1" OF for creating complete i.Core STM32MP1 C.TOUCH 2.0
10.1" Open Frame board.
Add bindings for it.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
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TQMa8Mx is a SOM family using NXP i.MX8M[Q,QL, D] CPU
MBa8Mx is a evaluation mainbord for this SOM
The SOM needs a mainboard, therefore we provide two compatibles here:
"tq,imx8mq-<SOM>" for the module and
"tq,imx8mq-<SOM>-<SBC>" for the module on that mainboard
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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TQMa8MxNL is a SOM family using NXP i.MX8MN[Q,QL,DL,S,SL] CPU
MBa8Mx is an evaluation mainbord for this SOM
The SOM needs a mainboard, therefore we provide two compatibles here:
"tq,imx8mn-<SOM>" for the module and
"tq,imx8mn-<SOM>-<SBC>" for mainboards
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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TQMa8MxML is a SOM family using NXP i.MX8MM[Q,QL,DL,S,SL] CPU
MBa8Mx is an evaluation mainbord for this SOM
The SOM needs a mainboard, therefore we provide two compatibles here:
"tq,imx8mm-<SOM>" for the module and
"tq,imx8mm-<SOM>-<SBC>" for the module on that mainboard
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add the dt binding for i.MX8ULP EVK board.
i.MX 8ULP is part of the ULP family with emphasis on extreme
low-power techniques using the 28 nm fully depleted silicon on
insulator process. Like i.MX 7ULP, i.MX 8ULP continues to be
based on asymmetric architecture, however will add a third DSP
domain for advanced voice/audio capability and a Graphics domain
where it is possible to access graphics resources from the
application side or the realtime side.
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add devicetree binding for Crux/Crux+ boards from the IOTA family.
These boards have the very same HW configuration as the Orion board
except the usage of Quad/QuadPlus SoC.
Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The TQ-Systems MBa6x mainboard can be used with TQMa6 variants with
i.MX6Q/QP/DL SoCs (TQMa6Q/QP/DL). The TQMa6Q and DL exist in two variants:
The newer variants "A" have a hardware workaround for Erratum ERR006687,
while variants "B" are missing such a workaround, so it needs to be
handled in software. The erratum was fixed in i.MX6QP, so no "A" variant
of the TQMa6QP exists.
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add imx6ull based JOZ Access Point.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add "joz" entry for JOZ BV: https://joz.nl/en/about-joz/
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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pinctrl: renesas: Updates for v5.17
- Add generic support for output impedance,
- Add drive strength and output impedance support for the RZ/G2L SoC,
- Miscellaneous fixes and improvements.
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Also fix some examples to avoid warnings like:
brcm,ns-pinmux.example.dt.yaml: pin-controller@1800c1c0: $nodename:0: 'pin-controller@1800c1c0' does not match '^pinctrl|pinmux@[0-9a-f]+$'
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211202063216.24439-1-zajec5@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This value inidcates the proximity level that should be considered
"close".
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211125125646.54831-1-nikita@trvn.ru
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Most AXPxxx-based reference designs place a 10k NTC thermistor on a
TS pin. axp20x IIO driver now report the voltage of this pin via
additional IIO channel. Add new "ts_v" channel to the channel description.
Signed-off-by: Evgeny Boger <boger@wirenboard.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Quentin Schulz <foss+kernel@0leil.net>
Link: https://lore.kernel.org/r/20211118141233.247907-3-boger@wirenboard.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Enable/disable internal i2c controller slave autoprobing at bootstrap.
Disable sensor-hub is useful if i2c controller clock/data lines are
connected through a pull-up with other chip lines (e.g. SDO/SA0).
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/54287a93922ac839501b776d288cc368aa81f0ab.1636816719.git.lorenzo@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Pull power management fixes from Rafael Wysocki:
"These fix a CPU hot-add issue in the cpufreq core, fix a comment in
the cpufreq core code and update its documentation, and disable the
DTPM (Dynamic Thermal Power Management) code for the time being to
prevent it from causing issues to appear.
Specifics:
- Disable DTPM for this cycle to prevent it from causing issues to
appear on otherwise functional systems (Daniel Lezcano)
- Fix cpufreq sysfs interface failure related to physical CPU hot-add
(Xiongfeng Wang)
- Fix comment in cpufreq core and update its documentation (Tang
Yizhou)"
* tag 'pm-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
powercap: DTPM: Drop unused local variable from init_dtpm()
cpufreq: docs: Update core.rst
cpufreq: Fix a comment in cpufreq_policy_free
powercap/drivers/dtpm: Disable DTPM at boot time
cpufreq: Fix get_cpu_device() failure in add_cpu_dev_symlink()
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Pull arm64 fixes from Will Deacon:
"Three arm64 fixes for -rc4.
One of them is just a trivial documentation fix, whereas the other two
address a warning in the kexec code and a crash in ftrace on systems
implementing BTI.
The latter patch has a couple of ugly ifdefs which Mark plans to clean
up separately, but as-is the patch is straightforward for backporting
to stable kernels.
Summary:
- Add missing BTI landing instructions to the ftrace*_caller
trampolines
- Fix kexec() WARN when DEBUG_VIRTUAL is enabled
- Fix PAC documentation by removing stale references to compiler
flags"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: ftrace: add missing BTIs
arm64: kexec: use __pa_symbol(empty_zero_page)
arm64: update PAC description for kernel
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Now that we implement the full remapping algorithms described in our
documentation remove the section about shortcircuting them.
Link: https://lore.kernel.org/r/20211123114227.3124056-6-brauner@kernel.org (v1)
Link: https://lore.kernel.org/r/20211130121032.3753852-6-brauner@kernel.org (v2)
Link: https://lore.kernel.org/r/20211203111707.3901969-6-brauner@kernel.org
Cc: Seth Forshee <sforshee@digitalocean.com>
Cc: Amir Goldstein <amir73il@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
CC: linux-fsdevel@vger.kernel.org
Reviewed-by: Seth Forshee <sforshee@digitalocean.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
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The if/then schema for 'data-lanes' doesn't work as 'compatible' is at a
different level than 'data-lanes'. To make it work, the if/then schema
would have to be moved to the top level and then whole hierarchy of
nodes down to 'data-lanes' created. I don't think it is worth the
complexity to do that, so let's just drop it.
The error in this schema is masked by a fixup in the tools causing the
'allOf' to get overwritten. Removing the fixup as part of moving to
json-schema draft 2019-09 revealed the issue:
Documentation/devicetree/bindings/media/nxp,imx7-mipi-csi2.example.dt.yaml: mipi-csi@30750000: ports:port@0:endpoint:data-lanes:0: [1] is too short
From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/media/nxp,imx7-mipi-csi2.yaml
Documentation/devicetree/bindings/media/nxp,imx7-mipi-csi2.example.dt.yaml: mipi-csi@32e30000: ports:port@0:endpoint:data-lanes:0: [1, 2, 3, 4] is too long
From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/media/nxp,imx7-mipi-csi2.yaml
The if condition was always true because 'compatible' did not exist in
'endpoint' node and a non-existent property is true for json-schema.
Fixes: 85b62ff2cb97 ("media: dt-bindings: media: nxp,imx7-mipi-csi2: Add i.MX8MM support")
Cc: Rui Miguel Silva <rmfrfs@gmail.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: linux-media@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Link: https://lore.kernel.org/r/20211203164828.187642-1-robh@kernel.org
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Add compatible for SDX65 RPMHCC.
Signed-off-by: Vamsi Krishna Lanka <quic_vamslank@quicinc.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/91c10dde568098027833dfcc310748a92a90387e.1638402361.git.quic_vamslank@quicinc.com
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The code and documentation are more difficult to maintain when kept
separately. This is further compounded when the standard structure
documentation infrastructure is not used.
Move the documentation into the code, use the standard documentation
infrastructure, add current documented functions, and reference the text
in the rst file.
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20211202044305.4006853-8-ira.weiny@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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It was unclear when the auxiliary device objects were to be free'ed by
the parent (registering) driver.
Also there are some patterns like using devm_add_action_or_reset() which
are helpful to mention to those using the interface to ensure they don't
double free or miss freeing the auxiliary devices.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20211202044305.4006853-4-ira.weiny@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Provide example code for how the match name is formed and where it is
supposed to be set.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20211202044305.4006853-3-ira.weiny@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The documentation for creating an auxiliary device is a 3 step not a 2
step process. Specifically the requirements of setting the name, id,
dev.release, and dev.parent fields was not clear as a precursor to the '2
step' process documented.
Clarify by declaring this a 3 step process starting with setting the
fields of struct auxiliary_device correctly.
Also add some sample code and tie the change into the rest of the
documentation.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20211202044305.4006853-2-ira.weiny@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Provide default defines for the topology_book_[id|cpumask] and
topology_drawer_[id|cpumask] macros just like for each other topology
level.
This way all topology levels are handled in a similar way. Still the
the book and drawer levels are only used on s390, and also the sysfs
attributes are only created on s390. However other architectures may
opt in if wanted.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20211129130309.3256168-4-hca@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The cluster_id and cluster_cpus topology sysfs attributes have been
added with commit c5e22feffdd7 ("topology: Represent clusters of CPUs
within a die").
They are currently only used for x86, arm64, and riscv (via generic
arch topology), however they are still present with bogus default
values for all other architectures. Instead of enforcing such new
sysfs attributes to all architectures, make them only optional visible
if an architecture opts in by defining both the topology_cluster_id
and topology_cluster_cpumask attributes.
This is similar to what was done when the book and drawer topology
levels were introduced: avoid useless and therefore confusing sysfs
attributes for architectures which cannot make use of them.
This should not break any existing applications, since this is a
new interface introduced with the v5.16 merge window.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20211129130309.3256168-3-hca@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The die_id and die_cpus topology sysfs attributes have been added with
commit 0e344d8c709f ("cpu/topology: Export die_id") and commit
2e4c54dac7b3 ("topology: Create core_cpus and die_cpus sysfs attributes").
While they are currently only used and useful for x86 they are still
present with bogus default values for all architectures. Instead of
enforcing such new sysfs attributes to all architectures, make them
only optional visible if an architecture opts in by defining both the
topology_die_id and topology_die_cpumask attributes.
This is similar to what was done when the book and drawer topology
levels were introduced: avoid useless and therefore confusing sysfs
attributes for architectures which cannot make use of them.
This should not break any existing applications, since this is a
rather new interface and applications should be able to handle also
older kernel versions without such attributes - besides that they
contain only useful information for x86.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20211129130309.3256168-2-hca@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Sam Protsenko
Geert Uytterhoeven
Alexander Stein
Yanteng Si
Linus Torvalds
Tang Yizhou
Georgi Djakov
Mark Brown
Rob Clark
Takashi Iwai
Laurent Pinchart
Vinod Koul
Trevor Wu
Krzysztof Kozlowski
Greg Kroah-Hartman
Jagan Teki
Jacky Bai
Michal Vokáč
Matthias Schiffer
Oleksij Rempel
Linus Walleij
Rafał Miłecki
Nikita Travkin
Evgeny Boger
Lorenzo Bianconi
Christian Brauner
Rob Herring
Vamsi krishna Lanka
Ira Weiny
Heiko Carstens