Commit graph

1,399,042 commits

Author SHA1 Message Date
Ping-Ke Shih
f0dc53a7b7 wifi: rtw89: phy: rename to RTW89_PHY_NUM as proper naming
The meaning is number of PHY, not maximum ID of PHY. Change to proper
naming.

No change logic at all.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20250117072828.16728-2-pkshih@realtek.com
2025-02-03 09:41:19 +08:00
Wolfram Sang
bfbb730c42 hwmon: (sht3x) Use per-client debugfs entry
The I2C core now offers a debugfs-directory per client. Use it and
remove the custom handling.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250131095148.11973-2-wsa+renesas@sang-engineering.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-02-02 17:34:06 -08:00
Wolfram Sang
84d867067b hwmon: (tps23861) Use per-client debugfs entry
The I2C core now offers a debugfs-directory per client. Use it and
remove the custom handling.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250125123941.36729-14-wsa+renesas@sang-engineering.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-02-02 17:34:06 -08:00
Wolfram Sang
cd4db38c43 hwmon: (sg2042) Use per-client debugfs entry
The I2C core now offers a debugfs-directory per client. Use it and
remove the custom handling.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250125123941.36729-12-wsa+renesas@sang-engineering.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-02-02 17:34:06 -08:00
Wolfram Sang
2e522c2933 hwmon: (ltc4282) Use per-client debugfs entry
The I2C core now offers a debugfs-directory per client. Use it and
remove the custom handling.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250125123941.36729-10-wsa+renesas@sang-engineering.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-02-02 17:34:06 -08:00
Wolfram Sang
82dda5cb88 hwmon: (ina3221) Use per-client debugfs entry
The I2C core now offers a debugfs-directory per client. Use it and
remove the custom handling.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250125123941.36729-9-wsa+renesas@sang-engineering.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-02-02 17:34:06 -08:00
Wolfram Sang
c36e0a1b26 hwmon: (isl28022) Use per-client debugfs entry
The I2C core now offers a debugfs-directory per client. Use it and
remove the custom handling.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20250123160347.44635-1-wsa+renesas@sang-engineering.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-02-02 17:34:06 -08:00
Ming Yu
02778f69fd hwmon: (lm90): Add support for NCT7716, NCT7717 and NCT7718
NCT7716 is similar to NCT7717 but has one more address support,
both of them only have a 8 bit resolution local thermal sensor.

NCT7718 has 11 bit resoulution remote thermal sensor.

Signed-off-by: Ming Yu <a0282524688@gmail.com>
Link: https://lore.kernel.org/r/20250117100744.1571385-2-a0282524688@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-02-02 17:34:06 -08:00
Ming Yu
d9371812f1 dt-bindings: hwmon: lm90: Add support for NCT7716, NCT7717 and NCT7718
Add support for the Nuvoton NCT7716/7717/7718 thermal sensors.

NCT7716 and NCT7717 do not support to add temperature offset.
The maximum offset supported by NCT7718 is 127875 millicelsius

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Ming Yu <a0282524688@gmail.com>
Link: https://lore.kernel.org/r/20250117100744.1571385-3-a0282524688@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-02-02 17:34:06 -08:00
Cedric Encarnacion
68b6f95861 hwmon: (pmbus/ltc2978) add support for ltm4673
Add support for LTM4673. The LTM4673 is a quad output, dual 12A and dual
5A, switching mode DC/DC step-down μModule regulator integrated with
4-channel power system manager.

This adds only the chip id, the checks for the manufacturer special id,
and the relevant attributes for the device's pmbus_driver_info.
The device does not support clear peaks.

Signed-off-by: Cedric Encarnacion <cedricjustine.encarnacion@analog.com>
Link: https://lore.kernel.org/r/20250124-ltm4673-v1-2-a2c6aa37c903@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-02-02 17:34:06 -08:00
Cedric Encarnacion
8dfd7e0826 dt-bindings: hwmon: ltc2978: add support for ltm4673
Add LTM4673 to supported devices of LTC2978. Unlike other LTM46xx
devices, LTM4673 is a μModule regulator that outputs four channels.

Signed-off-by: Cedric Encarnacion <cedricjustine.encarnacion@analog.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250124-ltm4673-v1-1-a2c6aa37c903@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-02-02 17:34:06 -08:00
Andy Shevchenko
352a21d290 hwmon: (gsc) drop unneeded assignment for cache_type
REGCACHE_NONE is the default type of the cache when not provided.
Drop unneeded explicit assignment to it.

Note, it's defined to 0, and if ever be redefined, it will break
literally a lot of the drivers, so it very unlikely to happen.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20250129152036.1797725-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-02-02 17:34:06 -08:00
Andy Shevchenko
c1ac98492d
spi: realtek-rtl-snand: Drop unneeded assignment for cache_type
REGCACHE_NONE is the default type of the cache when not provided.
Drop unneeded explicit assignment to it.

Note, it's defined to 0, and if ever be redefined, it will break
literally a lot of the drivers, so it very unlikely to happen.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20250129152925.1804071-1-andriy.shevchenko@linux.intel.com
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:41:38 +00:00
Sean Anderson
8978530645
spi: zynqmp-gqspi: Always acknowledge interrupts
RXEMPTY can cause an IRQ, even though we may not do anything about it
(such as if we are waiting for more received data). We must still handle
these IRQs because we can tell they were caused by the device.

Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20250116224130.2684544-6-sean.anderson@linux.dev
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:40:36 +00:00
Sean Anderson
9b32c86e40
spi: zynqmp-gqspi: Clean up fillgenfifo
This function does a lot more work (assigning things multiple times,
masking unnecessarily, comparing to zero, using superfluous parentheses)
than it needs to. This makes it difficult to understand and modify.
Clean it up. No functional change intended.

Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20250116224130.2684544-5-sean.anderson@linux.dev
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:40:35 +00:00
Sean Anderson
d2ead60d85
spi: zynqmp-gqspi: Add helpers for enabling/disabling DMA
DMA is enabled and disabled several times in the driver. Add some
helper functions for this task.

Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20250116224130.2684544-4-sean.anderson@linux.dev
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:40:34 +00:00
Sean Anderson
ba54629287
spi: zynqmp-gqspi: Add some more debug prints
Add a few more debug prints to make it easier to determine how the
device is programmed.

Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20250116224130.2684544-3-sean.anderson@linux.dev
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:40:33 +00:00
Sean Anderson
d61009bd57
spi: zynqmp-gqspi: Reformat long line
This long line is broken in an unusual place. Reformat it to better
match the kernel style.

Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20250116224130.2684544-2-sean.anderson@linux.dev
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:40:32 +00:00
Frieder Schrempf
f5aab0438e
regulator: pca9450: Fix enable register for LDO5
The LDO5 regulator has two configuration registers, but only
LDO5CTRL_L contains the bits for enabling/disabling the regulator.

Fixes: 0935ff5f1f ("regulator: pca9450: add pca9450 pmic driver")
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Marek Vasut <marex@denx.de>
Link: https://patch.msgid.link/20241218152842.97483-6-frieder@fris.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:39:04 +00:00
Frieder Schrempf
3ce6f4f943
regulator: pca9450: Fix control register for LDO5
For LDO5 we need to be able to check the status of the SD_VSEL input in
order to know which control register is used. Read the status of the
SD_VSEL signal via GPIO and use the correct register accordingly.

To use this, the LDO5 node in the devicetree needs the sd-vsel-gpios
property to reference the GPIO that is used to read back the SD_VSEL
status internally. Please note that the SION bit in the IOMUX must be
set if the signal is muxed as VSELECT and controlled by the USDHC
controller.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Link: https://patch.msgid.link/20241218152842.97483-5-frieder@fris.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:39:03 +00:00
Frieder Schrempf
c73be62caa
Revert "regulator: pca9450: Add SD_VSEL GPIO for LDO5"
This reverts commit 8c67a11bae.

It turns out that all boards using the PCA9450 actually have the
SD_VSEL input connected to the VSELECT signal of the SoCs SD/MMC
interface or use a fixed level.

The assumptions on which this was implemented were wrong. There
is no need for a GPIO-only-based approach and keeping this will
cause confusion and lead people to implement non-standard setups.

All in-tree users of this have been migrated and we can savely
remove this now and allow for a more future-proof approach
of syncing the actual status of SD_VSEL and the PMIC driver.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Link: https://patch.msgid.link/20241218152842.97483-4-frieder@fris.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:39:02 +00:00
Frieder Schrempf
b5ec74c2ae
arm64: dts: imx8mp-skov-reva: Use hardware signal for SD card VSELECT
The USDHC controller is able to control the IO voltage of the SD card.
There is no reason to use a GPIO to control it.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Link: https://patch.msgid.link/20241218152842.97483-3-frieder@fris.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:39:01 +00:00
Frieder Schrempf
f9cbf56b0a
dt-bindings: regulator: pca9450: Add properties for handling LDO5
This reverts commit 27866e3e8a and
implements a new future-proof way of handling the mismatch between
the PMIC driver and the hardware for LDO5.

It turned out that this feature was implemented based on the wrong
assumption that the SD_VSEL signal needs to be controlled as GPIO
in any case.

In fact the straight-forward approach is to mux the signal as
USDHC_VSELECT and let the USDHC controller do the job.

Most users never even used this property and the few who did have
been or are getting migrated to the alternative approach.

In order to know the current status (which of the two control
registers is used) for the LDO5 regulator, we need to route back the
USDHC_VSELECT signal by setting the SION bit in the IOMUX.

By adding the according GPIO as sd-vsel-gpios to the LDO5 node, we
allow the regulator driver to sample the current status of the
SD_VSEL signal that is used to select the correct control register.

The SD_VSEL on the PMIC is always an input. It's driven by the SoC's
VSELECT signal (controlled by the USDHC controller) and we use the
SION bit in the IOMUX to internally loop back the signal in order to
sample it using the GPIO.

As the SD_VSEL pin is directly routed to the LDO5 regulator in the
PMIC, make the sd-vsel-gpios property part of the LDO5 node.

SoC                                  PMIC
+-----------------------+           +-------------------+
|                       |           |                   |
|                       |           |                   |
|  GPIO <----------+    |           |                   |
|                  |    |    SD_VSEL|   +-------+       |
|  USDHC_VSELECT ->+------------------->| LDO5  |       |
|                       |           |   +-------+       |
|                       |           |                   |
+-----------------------+           +-------------------+

For boards which have the SD_VSEL tied to a fixed low level, we add
'nxp,sd-vsel-fixed-low'. The voltage of LDO5 is therefore only controlled
by writing to the LDO5CTRL_L register.

If none of 'nxp,sd-vsel-fixed-low' or 'sd-vsel-gpios' is set, we keep
the same behavior as before. The driver assumes that SD_VSEL is tied
high and the LDO5CTRL_H register can be used, which is in fact not true
for all known boards and works merely by chance.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20241218152842.97483-2-frieder@fris.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:39:00 +00:00
Isaac Scott
5a6a461079
regulator: ad5398: Add device tree support
Previously, the ad5398 driver used only platform_data, which is
deprecated in favour of device tree. This caused the AD5398 to fail to
probe as it could not load its init_data. If the AD5398 has a device
tree node, pull the init_data from there using
of_get_regulator_init_data.

Signed-off-by: Isaac Scott <isaac.scott@ideasonboard.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Link: https://patch.msgid.link/20250128173143.959600-4-isaac.scott@ideasonboard.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:38:47 +00:00
Isaac Scott
19d022d67d
regulator: ad5398: change enable bit name to improve readibility
The mask name AD5398_CURRENT_EN_MASK is misleading, as it implies that
setting bit 16 of the AD5398 enables current flow. In fact, setting this
bit prevents current flow, due to this bit being a software power down
control. This bit is referred to as "soft power down" in the datasheet.
As such, change the name of the bit and modify its use in the driver to
make the regulator more intuitively usable.

(When calling ad5398_enable, current will start flowing, and vice
versa).

Signed-off-by: Isaac Scott <isaac.scott@ideasonboard.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Link: https://patch.msgid.link/20250128173143.959600-2-isaac.scott@ideasonboard.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:38:46 +00:00
Christophe JAILLET
995cf0e014
regmap: Reorder 'struct regmap'
On a x86_64, with configured with allmodconfig, pahole states that the
regmap structure is:

	/* size: 1048, cachelines: 17, members: 78 */
	/* sum members: 1006, holes: 9, sum holes: 35 */
	/* padding: 7 */
	/* member types with holes: 2, total: 2 */
	/* last cacheline: 24 bytes */

So, when such a struct is allocated, 2048 bytes are allocated, with most of
this space being wasted.

Move a few bools so that the size is reduced to 1024.

After this change, pahole gives:

	/* size: 1024, cachelines: 16, members: 78 */
	/* sum members: 1006, holes: 6, sum holes: 18 */
	/* member types with holes: 2, total: 2 */

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/f01f900d15633d5cda5f27763723acb307c0d22f.1737725820.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:38:32 +00:00
Ivaylo Dimitrov
7ed1b26502
ASoC: cpcap: Implement jack detection
cpcap has headphones/microphone and PTT button detection logic, implement
code to support it.

Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Link: https://patch.msgid.link/20250122164129.807247-6-ivo.g.dimitrov.75@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:36:10 +00:00
Ivaylo Dimitrov
02d4a97ce3
dt-bindings: mfd: motorola-cpcap: Document audio-codec interrupts
Add DT binding for the audio-codec headset detection interrupts.

Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Link: https://patch.msgid.link/20250122164129.807247-4-ivo.g.dimitrov.75@gmail.com
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:36:09 +00:00
Ivaylo Dimitrov
5b4288792f
ASoC: cpcap: Implement .set_bias_level
With VAUDIO regulator being always on, we have to put it in low-power mode
when codec is not in use to decrease power usage.

Do so by implementing driver .set_bias_level callback.

Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Link: https://patch.msgid.link/20250122164129.807247-3-ivo.g.dimitrov.75@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:36:08 +00:00
Nikita Zhandarovich
a8c9a45338
ASoC: fsl_micfil: Enable default case in micfil_set_quality()
If 'micfil->quality' received from micfil_quality_set() somehow ends
up with an unpredictable value, switch() operator will fail to
initialize local variable qsel before regmap_update_bits() tries
to utilize it.

While it is unlikely, play it safe and enable a default case that
returns -EINVAL error.

Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.

Fixes: bea1d61d58 ("ASoC: fsl_micfil: rework quality setting")
Cc: stable@vger.kernel.org
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Link: https://patch.msgid.link/20250116142436.22389-1-n.zhandarovich@fintech.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-02-03 00:34:17 +00:00
Linus Torvalds
2014c95afe Linux 6.14-rc1 v6.14-rc1 2025-02-02 15:39:26 -08:00
Linus Torvalds
d79bc8f79b Turbostat 2025.02.02 updates since 2024.11.30
Fix regression in 2023.11.07 that affinitized forked child
 in one-shot mode.
 
 Harden one-shot mode against hotplug online/offline
 
 Enable RAPL SysWatt column by default.
 
 Add initial PTL, CWF platform support.
 
 Harden initial PMT code in response to early use.
 
 Enable first built-in PMT counter: CWF c1e residency
 
 Refuse to run on unsupported platforms without --force,
 to encourage updating to a version that supports the system,
 and to avoid no-so-useful measurement results.
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Merge tag 'turbostat-2025.02.02' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux

Pull turbostat updates from Len Brown:

 - Fix regression that affinitized forked child in one-shot mode.

 - Harden one-shot mode against hotplug online/offline

 - Enable RAPL SysWatt column by default

 - Add initial PTL, CWF platform support

 - Harden initial PMT code in response to early use

 - Enable first built-in PMT counter: CWF c1e residency

 - Refuse to run on unsupported platforms without --force, to encourage
   updating to a version that supports the system, and to avoid
   no-so-useful measurement results

* tag 'turbostat-2025.02.02' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (25 commits)
  tools/power turbostat: version 2025.02.02
  tools/power turbostat: Add CPU%c1e BIC for CWF
  tools/power turbostat: Harden one-shot mode against cpu offline
  tools/power turbostat: Fix forked child affinity regression
  tools/power turbostat: Add tcore clock PMT type
  tools/power turbostat: version 2025.01.14
  tools/power turbostat: Allow adding PMT counters directly by sysfs path
  tools/power turbostat: Allow mapping multiple PMT files with the same GUID
  tools/power turbostat: Add PMT directory iterator helper
  tools/power turbostat: Extend PMT identification with a sequence number
  tools/power turbostat: Return default value for unmapped PMT domains
  tools/power turbostat: Check for non-zero value when MSR probing
  tools/power turbostat: Enhance turbostat self-performance visibility
  tools/power turbostat: Add fixed RAPL PSYS divisor for SPR
  tools/power turbostat: Fix PMT mmaped file size rounding
  tools/power turbostat: Remove SysWatt from DISABLED_BY_DEFAULT
  tools/power turbostat: Add an NMI column
  tools/power turbostat: add Busy% to "show idle"
  tools/power turbostat: Introduce --force parameter
  tools/power turbostat: Improve --help output
  ...
2025-02-02 10:49:13 -08:00
Linus Torvalds
5d82ca7b50 sh updates for v6.14
- sh: boards: Use imply to enable hardware with complex dependencies
 - sh: Migrate to the generic rule for built-in DTB
 - sh: irq: Use seq_put_decimal_ull_width() for decimal values
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Merge tag 'sh-for-v6.14-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux

Pull sh updates from John Paul Adrian Glaubitz:
 "Fixes and improvements for sh:

   - replace seq_printf() with the more efficient
     seq_put_decimal_ull_width() to increase performance when stress
     reading /proc/interrupts (David Wang)

   - migrate sh to the generic rule for built-in DTB to help avoid race
     conditions during parallel builds which can occur because Kbuild
     decends into arch/*/boot/dts twice (Masahiro Yamada)

   - replace select with imply in the board Kconfig for enabling
     hardware with complex dependencies. This addresses warnings which
     were reported by the kernel test robot (Geert Uytterhoeven)"

* tag 'sh-for-v6.14-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
  sh: boards: Use imply to enable hardware with complex dependencies
  sh: Migrate to the generic rule for built-in DTB
  sh: irq: Use seq_put_decimal_ull_width() for decimal values
2025-02-02 10:40:27 -08:00
Changwoo Min
029b6ce733 sched_ext: Fix incorrect time delta calculation in time_delta()
When (s64)(after - before) > 0, the code returns the result of
(s64)(after - before) > 0 while the intended result should be
(s64)(after - before). That happens because the middle operand of
the ternary operator was omitted incorrectly, returning the result of
(s64)(after - before) > 0. Thus, add the middle operand
-- (s64)(after - before) -- to return the correct time calculation.

Fixes: d07be814fc ("sched_ext: Add time helpers for BPF schedulers")
Signed-off-by: Changwoo Min <changwoo@igalia.com>
Acked-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2025-02-02 07:40:35 -10:00
Changwoo Min
7125660bc1 sched_ext: Add an event, SCX_EV_DISPATCH_KEEP_LAST
Add a core event, SCX_EV_DISPATCH_KEEP_LAST, which represents how many
times a task is continued to run without ops.enqueue() when
SCX_OPS_ENQ_LAST is not set.

__scx_add_event() is used since the caller holds an rq lock,
so the preemption has already been disabled.

Signed-off-by: Changwoo Min <changwoo@igalia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2025-02-02 07:23:18 -10:00
Changwoo Min
9be0a1b0c8 sched_ext: Add an event, SCX_EV_DISPATCH_LOCAL_DSQ_OFFLINE
Add a core event, SCX_EV_DISPATCH_LOCAL_DSQ_OFFLINE, which represents how
many times a BPF scheduler tries to dispatch to an offlined local DSQ.

__scx_add_event() is used since the caller holds an rq lock,
so the preemption has already been disabled.

Signed-off-by: Changwoo Min <changwoo@igalia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2025-02-02 07:23:18 -10:00
Changwoo Min
f7f6142107 sched_ext: Add an event, SCX_EV_SELECT_CPU_FALLBACK
Add a core event, SCX_EV_SELECT_CPU_FALLBACK, which represents how many times
ops.select_cpu() returns a CPU that the task can't use.

__scx_add_event() is used since the caller holds an rq lock,
so the preemption has already been disabled.

Signed-off-by: Changwoo Min <changwoo@igalia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2025-02-02 07:23:18 -10:00
Changwoo Min
17103b8504 sched_ext: Implement event counter infrastructure
Collect the statistics of specific types of behavior in the sched_ext core,
which are not easily visible but still interesting to an scx scheduler.

An event type is defined in 'struct scx_event_stats.' When an event occurs,
its counter is accumulated using 'scx_add_event()' and '__scx_add_event()'
to per-CPU 'struct scx_event_stats' for efficiency. 'scx_bpf_events()'
aggregates all the per-CPU counters and exposes a system-wide counters.

For convenience and readability of the code, 'scx_agg_event()' and
'scx_dump_event()' are provided.

The collected events can be observed after a BPF scheduler is unloaded
beforea new BPF scheduler is loaded so the per-CPU 'struct scx_event_stats'
are reset.

Signed-off-by: Changwoo Min <changwoo@igalia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2025-02-02 07:23:18 -10:00
Shakeel Butt
b69bb476de cgroup: fix race between fork and cgroup.kill
Tejun reported the following race between fork() and cgroup.kill at [1].

Tejun:
  I was looking at cgroup.kill implementation and wondering whether there
  could be a race window. So, __cgroup_kill() does the following:

   k1. Set CGRP_KILL.
   k2. Iterate tasks and deliver SIGKILL.
   k3. Clear CGRP_KILL.

  The copy_process() does the following:

   c1. Copy a bunch of stuff.
   c2. Grab siglock.
   c3. Check fatal_signal_pending().
   c4. Commit to forking.
   c5. Release siglock.
   c6. Call cgroup_post_fork() which puts the task on the css_set and tests
       CGRP_KILL.

  The intention seems to be that either a forking task gets SIGKILL and
  terminates on c3 or it sees CGRP_KILL on c6 and kills the child. However, I
  don't see what guarantees that k3 can't happen before c6. ie. After a
  forking task passes c5, k2 can take place and then before the forking task
  reaches c6, k3 can happen. Then, nobody would send SIGKILL to the child.
  What am I missing?

This is indeed a race. One way to fix this race is by taking
cgroup_threadgroup_rwsem in write mode in __cgroup_kill() as the fork()
side takes cgroup_threadgroup_rwsem in read mode from cgroup_can_fork()
to cgroup_post_fork(). However that would be heavy handed as this adds
one more potential stall scenario for cgroup.kill which is usually
called under extreme situation like memory pressure.

To fix this race, let's maintain a sequence number per cgroup which gets
incremented on __cgroup_kill() call. On the fork() side, the
cgroup_can_fork() will cache the sequence number locally and recheck it
against the cgroup's sequence number at cgroup_post_fork() site. If the
sequence numbers mismatch, it means __cgroup_kill() can been called and
we should send SIGKILL to the newly created task.

Reported-by: Tejun Heo <tj@kernel.org>
Closes: https://lore.kernel.org/all/Z5QHE2Qn-QZ6M-KW@slm.duckdns.org/ [1]
Fixes: 661ee62809 ("cgroup: introduce cgroup.kill")
Cc: stable@vger.kernel.org # v5.14+
Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2025-02-02 06:54:51 -10:00
Len Brown
2c4627c8ce tools/power turbostat: version 2025.02.02
Summary of Changes since 2024.11.30:

Fix regression in 2023.11.07 that affinitized forked child
in one-shot mode.

Harden one-shot mode against hotplug online/offline

Enable RAPL SysWatt column by default.

Add initial PTL, CWF platform support.

Harden initial PMT code in response to early use.

Enable first built-in PMT counter: CWF c1e residency

Refuse to run on unsupported platforms without --force,
to encourage updating to a version that supports the system,
and to avoid no-so-useful measurement results.

Signed-off-by: Len Brown <len.brown@intel.com>
2025-02-02 10:54:23 -06:00
Jeff Layton
b9382e29ca nfsd: validate the nfsd_serv pointer before calling svc_wake_up
nfsd_file_dispose_list_delayed can be called from the filecache
laundrette, which is shut down after the nfsd threads are shut down and
the nfsd_serv pointer is cleared. If nn->nfsd_serv is NULL then there
are no threads to wake.

Ensure that the nn->nfsd_serv pointer is non-NULL before calling
svc_wake_up in nfsd_file_dispose_list_delayed. This is safe since the
svc_serv is not freed until after the filecache laundrette is cancelled.

Reported-by: Salvatore Bonaccorso <carnil@debian.org>
Closes: https://bugs.debian.org/1093734
Fixes: ffb4025961 ("nfsd: Don't leave work of closing files to a work queue")
Cc: stable@vger.kernel.org
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-02-02 11:31:58 -05:00
Li Lingfeng
7faf14a7b0 nfsd: clear acl_access/acl_default after releasing them
If getting acl_default fails, acl_access and acl_default will be released
simultaneously. However, acl_access will still retain a pointer pointing
to the released posix_acl, which will trigger a WARNING in
nfs3svc_release_getacl like this:

------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 26 PID: 3199 at lib/refcount.c:28
refcount_warn_saturate+0xb5/0x170
Modules linked in:
CPU: 26 UID: 0 PID: 3199 Comm: nfsd Not tainted
6.12.0-rc6-00079-g04ae226af01f-dirty #8
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.16.1-2.fc37 04/01/2014
RIP: 0010:refcount_warn_saturate+0xb5/0x170
Code: cc cc 0f b6 1d b3 20 a5 03 80 fb 01 0f 87 65 48 d8 00 83 e3 01 75
e4 48 c7 c7 c0 3b 9b 85 c6 05 97 20 a5 03 01 e8 fb 3e 30 ff <0f> 0b eb
cd 0f b6 1d 8a3
RSP: 0018:ffffc90008637cd8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff83904fde
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff88871ed36380
RBP: ffff888158beeb40 R08: 0000000000000001 R09: fffff520010c6f56
R10: ffffc90008637ab7 R11: 0000000000000001 R12: 0000000000000001
R13: ffff888140e77400 R14: ffff888140e77408 R15: ffffffff858b42c0
FS:  0000000000000000(0000) GS:ffff88871ed00000(0000)
knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562384d32158 CR3: 000000055cc6a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ? refcount_warn_saturate+0xb5/0x170
 ? __warn+0xa5/0x140
 ? refcount_warn_saturate+0xb5/0x170
 ? report_bug+0x1b1/0x1e0
 ? handle_bug+0x53/0xa0
 ? exc_invalid_op+0x17/0x40
 ? asm_exc_invalid_op+0x1a/0x20
 ? tick_nohz_tick_stopped+0x1e/0x40
 ? refcount_warn_saturate+0xb5/0x170
 ? refcount_warn_saturate+0xb5/0x170
 nfs3svc_release_getacl+0xc9/0xe0
 svc_process_common+0x5db/0xb60
 ? __pfx_svc_process_common+0x10/0x10
 ? __rcu_read_unlock+0x69/0xa0
 ? __pfx_nfsd_dispatch+0x10/0x10
 ? svc_xprt_received+0xa1/0x120
 ? xdr_init_decode+0x11d/0x190
 svc_process+0x2a7/0x330
 svc_handle_xprt+0x69d/0x940
 svc_recv+0x180/0x2d0
 nfsd+0x168/0x200
 ? __pfx_nfsd+0x10/0x10
 kthread+0x1a2/0x1e0
 ? kthread+0xf4/0x1e0
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x34/0x60
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Kernel panic - not syncing: kernel: panic_on_warn set ...

Clear acl_access/acl_default after posix_acl_release is called to prevent
UAF from being triggered.

Fixes: a257cdd0e2 ("[PATCH] NFSD: Add server support for NFSv3 ACLs.")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/20241107014705.2509463-1-lilingfeng@huaweicloud.com/
Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com>
Reviewed-by: Rick Macklem <rmacklem@uoguelph.ca>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-02-02 11:31:45 -05:00
Sankararaman Jayaraman
3f1baa91a1 vmxnet3: Fix tx queue race condition with XDP
If XDP traffic runs on a CPU which is greater than or equal to
the number of the Tx queues of the NIC, then vmxnet3_xdp_get_tq()
always picks up queue 0 for transmission as it uses reciprocal scale
instead of simple modulo operation.

vmxnet3_xdp_xmit() and vmxnet3_xdp_xmit_frame() use the above
returned queue without any locking which can lead to race conditions
when multiple XDP xmits run in parallel on different CPU's.

This patch uses a simple module scheme when the current CPU equals or
exceeds the number of Tx queues on the NIC. It also adds locking in
vmxnet3_xdp_xmit() and vmxnet3_xdp_xmit_frame() functions.

Fixes: 54f00cce11 ("vmxnet3: Add XDP support.")
Signed-off-by: Sankararaman Jayaraman <sankararaman.jayaraman@broadcom.com>
Signed-off-by: Ronak Doshi <ronak.doshi@broadcom.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250131042340.156547-1-sankararaman.jayaraman@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-01 17:17:32 -08:00
Jiasheng Jiang
a8aa6a6ddc ice: Add check for devm_kzalloc()
Add check for the return value of devm_kzalloc() to guarantee the success
of allocation.

Fixes: 42c2eb6b1f ("ice: Implement devlink-rate API")
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Link: https://patch.msgid.link/20250131013832.24805-1-jiashengjiangcool@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-01 16:57:50 -08:00
Jakub Kicinski
92191dd107 net: ipv6: fix dst ref loops in rpl, seg6 and ioam6 lwtunnels
Some lwtunnels have a dst cache for post-transformation dst.
If the packet destination did not change we may end up recording
a reference to the lwtunnel in its own cache, and the lwtunnel
state will never be freed.

Discovered by the ioam6.sh test, kmemleak was recently fixed
to catch per-cpu memory leaks. I'm not sure if rpl and seg6
can actually hit this, but in principle I don't see why not.

Fixes: 8cb3bf8bff ("ipv6: ioam: Add support for the ip6ip6 encapsulation")
Fixes: 6c8702c60b ("ipv6: sr: add support for SRH encapsulation and injection with lwtunnels")
Fixes: a7a29f9c36 ("net: ipv6: add rpl sr tunnel")
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250130031519.2716843-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-01 16:55:44 -08:00
Jakub Kicinski
c71a192976 net: ipv6: fix dst refleaks in rpl, seg6 and ioam6 lwtunnels
dst_cache_get() gives us a reference, we need to release it.

Discovered by the ioam6.sh test, kmemleak was recently fixed
to catch per-cpu memory leaks.

Fixes: 985ec6f5e6 ("net: ipv6: rpl_iptunnel: mitigate 2-realloc issue")
Fixes: 40475b6376 ("net: ipv6: seg6_iptunnel: mitigate 2-realloc issue")
Fixes: dce525185b ("net: ipv6: ioam6_iptunnel: mitigate 2-realloc issue")
Reviewed-by: Justin Iurman <justin.iurman@uliege.be>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250130031519.2716843-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-01 16:55:30 -08:00
Florian Fainelli
46ded70923 net: bcmgenet: Correct overlaying of PHY and MAC Wake-on-LAN
Some Wake-on-LAN modes such as WAKE_FILTER may only be supported by the MAC,
while others might be only supported by the PHY. Make sure that the .get_wol()
returns the union of both rather than only that of the PHY if the PHY supports
Wake-on-LAN.

When disabling Wake-on-LAN, make sure that this is done at both the PHY
and MAC level, rather than doing an early return from the PHY driver.

Fixes: 7e400ff35c ("net: bcmgenet: Add support for PHY-based Wake-on-LAN")
Fixes: 9ee09edc05 ("net: bcmgenet: Properly overlay PHY and MAC Wake-on-LAN capabilities")
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20250129231342.35013-1-florian.fainelli@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-01 16:53:33 -08:00
Linus Torvalds
a86bf2283d assorted stuff for this merge window
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Merge tag 'pull-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull misc vfs cleanups from Al Viro:
 "Two unrelated patches - one is a removal of long-obsolete include in
  overlayfs (it used to need fs/internal.h, but the extern it wanted has
  been moved back to include/linux/namei.h) and another introduces
  convenience helper constructing struct qstr by a NUL-terminated
  string"

* tag 'pull-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  add a string-to-qstr constructor
  fs/overlayfs/namei.c: get rid of include ../internal.h
2025-02-01 15:07:56 -08:00
Linus Torvalds
c270ab5a87 Revert commit breaking sysv ipc for o32 ABI
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Merge tag 'mips_6.14_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS fix from Thomas Bogendoerfer:
 "Revert commit breaking sysv ipc for o32 ABI"

* tag 'mips_6.14_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  Revert "mips: fix shmctl/semctl/msgctl syscall for o32"
2025-02-01 14:54:33 -08:00
Linus Torvalds
cabb4685d5 twenty one cifs/smb3 client fixes, many for special file type handling
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Merge tag 'v6.14-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull more smb client updates from Steve French:

   - various updates for special file handling: symlink handling,
     support for creating sockets, cleanups, new mount options (e.g. to
     allow disabling using reparse points for them, and to allow
     overriding the way symlinks are saved), and fixes to error paths

   - fix for kerberos mounts (allow IAKerb)

   - SMB1 fix for stat and for setting SACL (auditing)

   - fix an incorrect error code mapping

   - cleanups"

* tag 'v6.14-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6: (21 commits)
  cifs: Fix parsing native symlinks directory/file type
  cifs: update internal version number
  cifs: Add support for creating WSL-style symlinks
  smb3: add support for IAKerb
  cifs: Fix struct FILE_ALL_INFO
  cifs: Add support for creating NFS-style symlinks
  cifs: Add support for creating native Windows sockets
  cifs: Add mount option -o reparse=none
  cifs: Add mount option -o symlink= for choosing symlink create type
  cifs: Fix creating and resolving absolute NT-style symlinks
  cifs: Simplify reparse point check in cifs_query_path_info() function
  cifs: Remove symlink member from cifs_open_info_data union
  cifs: Update description about ACL permissions
  cifs: Rename struct reparse_posix_data to reparse_nfs_data_buffer and move to common/smb2pdu.h
  cifs: Remove struct reparse_posix_data from struct cifs_open_info_data
  cifs: Remove unicode parameter from parse_reparse_point() function
  cifs: Fix getting and setting SACLs over SMB1
  cifs: Remove intermediate object of failed create SFU call
  cifs: Validate EAs for WSL reparse points
  cifs: Change translation of STATUS_PRIVILEGE_NOT_HELD to -EPERM
  ...
2025-02-01 11:30:41 -08:00