Shreeya Patel [Sat, 3 Jun 2023 18:53:38 +0000 (00:23 +0530)]
iio: adc: rockchip_saradc: Use dev_err_probe
Use dev_err_probe instead of dev_err in probe function,
which simplifies code a little bit and prints the error
code.
Signed-off-by: Shreeya Patel <shreeya.patel@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230603185340.13838-7-shreeya.patel@collabora.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Shreeya Patel [Sat, 3 Jun 2023 18:53:37 +0000 (00:23 +0530)]
iio: adc: rockchip_saradc: Match alignment with open parenthesis
Match alignment with open parenthesis for improving the code
readability.
Signed-off-by: Shreeya Patel <shreeya.patel@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230603185340.13838-6-shreeya.patel@collabora.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Shreeya Patel [Sat, 3 Jun 2023 18:53:36 +0000 (00:23 +0530)]
iio: adc: rockchip_saradc: Use of_device_get_match_data
Use of_device_get_match_data() to simplify the code.
Signed-off-by: Shreeya Patel <shreeya.patel@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230603185340.13838-5-shreeya.patel@collabora.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Shreeya Patel [Sat, 3 Jun 2023 18:53:35 +0000 (00:23 +0530)]
iio: adc: rockchip_saradc: Make use of devm_clk_get_enabled
Use devm_clk_get_enabled() to avoid manually disabling the
clock.
Signed-off-by: Shreeya Patel <shreeya.patel@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230603185340.13838-4-shreeya.patel@collabora.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Simon Xue [Sat, 3 Jun 2023 18:53:34 +0000 (00:23 +0530)]
iio: adc: rockchip_saradc: Add support for RK3588
Add new start and read functions to support rk3588 device.
Also, add a device compatible string for the same.
Signed-off-by: Simon Xue <xxm@rock-chips.com>
Signed-off-by: Shreeya Patel <shreeya.patel@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230603185340.13838-3-shreeya.patel@collabora.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Simon Xue [Sat, 3 Jun 2023 18:53:33 +0000 (00:23 +0530)]
iio: adc: rockchip_saradc: Add callback functions
Add start, read and power_down callback functions,
which will help in adding new rockchip device support
cleanly.
Signed-off-by: Simon Xue <xxm@rock-chips.com>
Signed-off-by: Shreeya Patel <shreeya.patel@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230603185340.13838-2-shreeya.patel@collabora.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Anup Sharma [Sat, 20 May 2023 10:55:38 +0000 (16:25 +0530)]
iio: temperature: tmp006: Add OF device matching support
Adds an of_device_id table entry to the driver, enabling
device matching through device tree. With this update, the driver
can now match devices using both the i2c_device_id entry and the
newly added of_device_id table.
Signed-off-by: Anup Sharma <anupnewsmail@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/72746bdfd8f74171943e41759b891c7af40627ec.1684579603.git.anupnewsmail@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Anup Sharma [Sat, 20 May 2023 10:53:07 +0000 (16:23 +0530)]
dt-bindings: iio: temperature: Add support for tmp006
Add devicetree binding document for TMP006, IR thermopile sensor.
Signed-off-by: Anup Sharma <anupnewsmail@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/3bbda3b1402a26cdafc95c7685679f2311365cad.1684579603.git.anupnewsmail@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Uwe Kleine-König [Wed, 24 May 2023 15:16:42 +0000 (17:16 +0200)]
staging: iio: Switch i2c drivers back to use .probe()
After commit
b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
03c835f498b5 ("i2c: Switch .probe() to not take an id parameter") convert
back to (the new) .probe() to be able to eventually drop .probe_new() from
struct i2c_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230524151646.486847-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Franziska Naepelt [Sun, 28 May 2023 10:48:02 +0000 (12:48 +0200)]
iio: amplifiers: ad8366 Fix whitespace issue
This removes the following checkpatch issue:
- ERROR: space prohibited before that ',' (ctx:WxW)
Signed-off-by: Franziska Naepelt <franziska.naepelt@gmail.com>
Link: https://lore.kernel.org/r/20230528104802.22011-1-franziska.naepelt@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Jean-Baptiste Maneyrol [Mon, 22 May 2023 09:32:10 +0000 (09:32 +0000)]
iio: imu: inv_icm42600: avoid frequent timestamp jitter
We are currently synchronizing every time the data timestamp with
the IT timestamp, leading to system jitter jamming timestamps.
To fix that and keep it simple, let's just synchronize when the
delta is bigger than the acceptable jitter, and keep
synchronization at the jitter value.
The result is much stable timestamps reflecting better the real
physical value. Example @50Hz delta timestamp,
* before: 20.123ms, 19.721ms, 20.023ms, 20.353ms, 19.821ms, ...
* after: 20.173ms, 20.173ms, 20.173ms, 20.40ms, 20.173ms, ...
Refactorize code and delete the unnecessary handling of multiple
FIFO data.
Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://lore.kernel.org/r/20230522093210.817212-1-inv.git-commit@tdk.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Matti Vaittinen [Mon, 8 May 2023 10:39:49 +0000 (13:39 +0300)]
MAINTAINERS: Add ROHM BU27008
Add myself as a maintainer for ROHM BU27008 color sensor driver.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/31e25a41135ab0a86645b5078af797802b32f9c7.1683541225.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Matti Vaittinen [Mon, 8 May 2023 10:39:29 +0000 (13:39 +0300)]
iio: light: ROHM BU27008 color sensor
The ROHM BU27008 is a sensor with 5 photodiodes (red, green, blue, clear
and IR) with four configurable channels. Red and green being always
available and two out of the rest three (blue, clear, IR) can be
selected to be simultaneously measured. Typical application is adjusting
LCD backlight of TVs, mobile phones and tablet PCs.
Add initial support for the ROHM BU27008 color sensor.
- raw_read() of RGB and clear channels
- triggered buffer w/ DRDY interrtupt
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/2594162f0e44148cffb1fb05f1d6edfde6bd11bc.1683541225.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Matti Vaittinen [Mon, 8 May 2023 10:31:35 +0000 (13:31 +0300)]
iio: kx022a: Use new iio_validate_own_trigger()
The new generic iio_validate_own_trigger() can be used as
validate_trigger callback for verifying the used trigger belongs to same
device as the iio_dev.
Use the generic function instead of rolling own one.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/cbd585e4787f62dc1a343a51b629ce73dd7d5426.1683541225.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Matti Vaittinen [Mon, 8 May 2023 10:31:17 +0000 (13:31 +0300)]
iio: trigger: Add simple trigger_validation helper
Some triggers can only be attached to the IIO device that corresponds to
the same physical device. Implement generic helper which can be used as
a validate_trigger callback for such devices.
Suggested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/51cd3e3e74a6addf8d333f4a109fb9c5a11086ee.1683541225.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Matti Vaittinen [Mon, 8 May 2023 10:30:55 +0000 (13:30 +0300)]
dt-bindings: iio: light: ROHM BU27008
The ROHM BU27008 is a sensor with 5 photodiodes (red, green, blue, clear
and IR) with four configurable channels. Red and green being always
available and two out of the rest three (blue, clear, IR) can be
selected to be simultaneously measured. Typical application is adjusting
LCD backlight of TVs, mobile phones and tablet PCs.
Add BU27008 dt-bindings.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/f24196e11ee73511312b629daa20c7d783d8bf6c.1683541225.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marek Vasut [Wed, 10 May 2023 10:22:51 +0000 (12:22 +0200)]
iio: mlx90614: Add MLX90615 support
Add support for MLX90615 Infra Red Thermometer, which seems to be
the predecesor of MLX90614 . There are significant differences in
the register layout compared to MLX90614, but the functionality
of the device is virtually identical.
The following differences have been identified:
- RAM/EEPROM/SLEEP access opcodes are different
- RAM/EEPROM registers are at different offsets
- EEPROM emissivity and configuration registers are at different offsets
- EEPROM configuration register bits are shuffled around
- EEPROM emissivity settings are 14 bit on MLX90615 , 16 bit on MLX90614
- MLX90615 can only ever support one sensor, MLX90614 could support two
- FIR filter is set to fixed settings on MLX90615
- IIR filter coefficients are different
This patch fills in the MLX90615 specific description and quirk handling.
The IIR filter coefficients were provided by Melexis as follows:
0b0000 - Forbidden value
0b0001 - 100% - settling time = refresh rate = 205ms (around 5Hz)
0b0010 - 50% - settling time = 2050ms (around 0.5Hz)
0b0011 - 33% - settling time = 36900ms (around 0.3Hz)
0b0100 - 25% - settling time = 5125ms (around 0.2Hz)
0b0101 - 20% - settling time = 6355ms (around 0.15Hz)
0b0110 - 17% - settling time = 7790ms (around 0.13Hz)
0b0111 - 14% - settling time = 9225ms (around 0.1Hz)
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Crt Mori <cmo@melexis.com>
Link: https://lore.kernel.org/r/20230510102251.10118-6-marex@denx.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marek Vasut [Wed, 10 May 2023 10:22:50 +0000 (12:22 +0200)]
iio: mlx90614: Factor our register IO and constants into model specific descriptor
Factor out all the differences between MLX90614 and other similar chips
into a structure which describes the chip and allows abstracting out the
differences from the driver code. No functional change.
This patch moves all the RAM and EEPROM IO opcodes into the descriptor
structure and combines them, instead of combining the opcode and offset
in macros.
Acked-by: Crt Mori <cmo@melexis.com>
Tested-by: Crt Mori <cmo@melexis.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20230510102251.10118-5-marex@denx.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marek Vasut [Wed, 10 May 2023 10:22:49 +0000 (12:22 +0200)]
iio: mlx90614: Drop MLX90614_CONST_EMISSIVITY_RESOLUTION
The MLX90614_CONST_EMISSIVITY_RESOLUTION can be calculated from
MLX90614_CONST_RAW_EMISSIVITY_MAX, perform the calculation inline
and drio the MLX90614_CONST_EMISSIVITY_RESOLUTION.
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Crt Mori <cmo@melexis.com>
Link: https://lore.kernel.org/r/20230510102251.10118-4-marex@denx.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marek Vasut [Wed, 10 May 2023 10:22:48 +0000 (12:22 +0200)]
iio: mlx90614: Drop unused register macros
To simplify addition of support for new parts, drop unused register macros.
No functional change.
Acked-by: Crt Mori <cmo@melexis.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20230510102251.10118-3-marex@denx.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marek Vasut [Wed, 10 May 2023 10:22:47 +0000 (12:22 +0200)]
iio: mlx90614: Sort headers
Sort the headers alphabetically. No functional change.
Acked-by: Crt Mori <cmo@melexis.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20230510102251.10118-2-marex@denx.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marek Vasut [Wed, 10 May 2023 10:22:46 +0000 (12:22 +0200)]
dt-bindings: iio: temperature: melexis,mlx90614: Document MLX90615 support
Document support for MLX90615 Infra Red Thermometer, which seems to
be the predecesor of MLX90614 . There are significant differences in
the register layout compared to MLX90614, but the functionality of
the device is virtually identical.
Acked-by: Crt Mori <cmo@melexis.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20230510102251.10118-1-marex@denx.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Andreas Klinger [Tue, 16 May 2023 11:33:15 +0000 (13:33 +0200)]
MAINTAINERS: Add Honeywell mprls0025pa sensor
Add myself as a maintainer for Honeywell mprls0025pa sensor.
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Link: https://lore.kernel.org/r/ZGNp+1uNAxi3uxjM@arbad
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Andreas Klinger [Tue, 16 May 2023 11:32:45 +0000 (13:32 +0200)]
iio: pressure: Honeywell mprls0025pa pressure sensor
Honeywell mprls0025pa is a series of pressure sensors.
Add initial I2C support.
Note:
- IIO buffered mode is supported
- SPI mode is not supported
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Link: https://lore.kernel.org/r/ZGNp3SqyOJeEcLsj@arbad
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Andreas Klinger [Tue, 16 May 2023 11:32:13 +0000 (13:32 +0200)]
dt-bindings: iio: pressure: Support Honeywell mprls0025pa sensor
Honeywell mprls0025pa is a pressure sensor series. There are many
different models with different pressure ranges, units and transfer
functions.
The range and transfer function need to be set up in the dt. Therefore
new properties honeywell,pmin-pascal, honeywell,pmax-pascal,
honeywell,transfer-function are introduced.
Add dt-bindings.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Link: https://lore.kernel.org/r/ZGNpve4ux5KJ3BNQ@arbad
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Uwe Kleine-König [Mon, 15 May 2023 20:50:48 +0000 (22:50 +0200)]
iio: Switch i2c drivers back to use .probe()
After commit
b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
03c835f498b5 ("i2c: Switch .probe() to not take an id parameter") convert
back to (the new) .probe() to be able to eventually drop .probe_new() from
struct i2c_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230515205048.19561-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Niklas Schnelle [Tue, 16 May 2023 11:00:08 +0000 (13:00 +0200)]
iio: ad7606: Kconfig: add HAS_IOPORT dependencies
In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
not being declared. We thus need to add HAS_IOPORT as dependency for
those drivers using them.
Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Link: https://lore.kernel.org/r/20230516110038.2413224-13-schnelle@linux.ibm.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Krzysztof Kozlowski [Sun, 7 May 2023 17:39:21 +0000 (19:39 +0200)]
dt-bindings: iio: st,lsm6dsx: reference common schema for mount-matrix
Reference iio.yaml schema from dtschema to allow already used
mount-matrix property:
msm8953-xiaomi-daisy.dtb: imu@6a: Unevaluated properties are not allowed ('mount-matrix' was unexpected)
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230507173923.263741-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Herve Codina [Tue, 9 May 2023 16:08:52 +0000 (18:08 +0200)]
MAINTAINERS: add the Renesas X9250 driver entry
After contributing the driver, add myself as the maintainer for the
Renesas X9250 IIO driver.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20230509160852.158101-4-herve.codina@bootlin.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Herve Codina [Tue, 9 May 2023 16:08:51 +0000 (18:08 +0200)]
iio: potentiometer: Add support for the Renesas X9250 potentiometers
The Renesas X9250 integrates four digitally controlled potentiometers.
On each potentiometer, the X9250T has a 100 kOhms total resistance and
the X9250U has a 50 kOhms total resistance.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20230509160852.158101-3-herve.codina@bootlin.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Herve Codina [Tue, 9 May 2023 16:08:50 +0000 (18:08 +0200)]
dt-bindings: iio: potentiometer: Add the Renesas X9250 potentiometers
The Renesas X9250 is a quad digitally controlled potentiometers.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230509160852.158101-2-herve.codina@bootlin.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Hermes Zhang [Fri, 5 May 2023 05:48:53 +0000 (13:48 +0800)]
iio: imu: mpu6050: Add support for the ICM 20600 IMU
The Invensense ICM-20600 is a 6-axis MotionTracking device that combines a
3-axis gyroscope and an 3-axis accelerometer. It is very similar to the
ICM20602 imu which is already supported by the mpu6050 driver. The main
difference is that the ICM-20600 has a different WHOAMI value.
Signed-off-by: Hermes Zhang <chenhuiz@axis.com>
Acked-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://lore.kernel.org/r/20230505054853.2155326-3-chenhuiz@axis.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Hermes Zhang [Fri, 5 May 2023 05:48:52 +0000 (13:48 +0800)]
dt-bindings: iio: imu: mpu6050: Add icm20600 bindings to mpu6050
ICM-20600 is almost same as ICM-20602 which already support in mpu6050
driver. Specify "invensense,icm20602" as a fallback compatible
Signed-off-by: Hermes Zhang <chenhuiz@axis.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://lore.kernel.org/r/20230505054853.2155326-2-chenhuiz@axis.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marijn Suijten [Mon, 1 May 2023 23:17:37 +0000 (01:17 +0200)]
iio: adc: qcom-spmi-vadc: Propagate fw node label to userspace
Set the read_label() callback to return a friendly name provided in DT
(firmware), in order to make in_{therm,voltage}X_label attributes show
up in sysfs for userspace to consume a channel name. This is
particularly useful for custom thermistors being attached to otherwise
generically named GPIOs, where the name is known by the board DT.
If the channel name isn't set in DT, use the datasheet_name hardcoded in
the driver instead.
Note that this doesn't fall back to fwnode_get_name() as that provides
suboptimally readable names, with an @xx address suffix from board DT.
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230502-iio-adc-propagate-fw-node-label-v3-5-6be5db6e6b5a@somainline.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marijn Suijten [Mon, 1 May 2023 23:17:36 +0000 (01:17 +0200)]
iio: adc: qcom-spmi-adc5: Remove unnecessary datasheet_name NULL check
datasheet_name is statically filled by a macro for every channel, and is
nor should ever be set to NULL.
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230502-iio-adc-propagate-fw-node-label-v3-4-6be5db6e6b5a@somainline.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marijn Suijten [Mon, 1 May 2023 23:17:35 +0000 (01:17 +0200)]
iio: adc: qcom-spmi-adc5: Fall back to datasheet_name instead of fwnode name
Since the migration to fwnode_get_name in commit
4f47a236a23d ("iio:
adc: qcom-spmi-adc5: convert to device properties") the resulting
adc5_channel_prop::channel_name (renamed from datasheet_name in the
previous patch) - which is propagated into iio_chan_spec::extend_name -
was containing the DT node name including @xx suffix if a "label"
property is not present, while adc5_channels::datasheet_name was thus
far set by the macros but always remained unread. Put it to use instead
of using a confusing name containing @xx in sysfs filenames (again, when
"label" is not set).
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230502-iio-adc-propagate-fw-node-label-v3-3-6be5db6e6b5a@somainline.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marijn Suijten [Mon, 1 May 2023 23:17:34 +0000 (01:17 +0200)]
iio: adc: qcom-spmi-adc5: Use driver datasheet_name instead of DT label
iio_chan_spec::datasheet_name expects a channel/pin name on the hardware
part, i.e. from its datasheet, instead of a friendly name from DT which
typically describes the use of said channel. GPIO channels are commonly
specialized in QCOM board DTS based on what a - typically thermistor -
is connected to.
Also rename adc5_channel_prop::datasheet_name to channel_name to that
effect.
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230502-iio-adc-propagate-fw-node-label-v3-2-6be5db6e6b5a@somainline.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marijn Suijten [Mon, 1 May 2023 23:17:33 +0000 (01:17 +0200)]
iio: core: Point users of extend_name field to read_label callback
As mentioned and discussed in [1] extend_name should not be used for
full channel labels (and most drivers seem to only use it to express a
short type of a channel) as this affects sysfs filenames, while the
label name is supposed to be extracted from the *_label sysfs file
instead. This appears to have been unclear to some drivers as
extend_name is also used when read_label is unset, achieving an initial
goal of providing sensible names in *_label sysfs files without noticing
that sysfs filenames are (negatively and likely unintentionally)
affected as well.
Point readers of iio_chan_spec::extend_name to iio_info::read_label by
mentioning deprecation and side-effects of this field.
[1]: https://lore.kernel.org/linux-arm-msm/
20221221223432.si2aasbleiicayfl@SoMainline.org/
Suggested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Link: https://lore.kernel.org/r/20230502-iio-adc-propagate-fw-node-label-v3-1-6be5db6e6b5a@somainline.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Matti Vaittinen [Thu, 4 May 2023 07:58:52 +0000 (10:58 +0300)]
iio: kx022a: Probe asynchronously
Devices which may take a while to initialize during probe and which have
no strong reason to probe synchronously can request asynchronous probing
as default probe strategy. This can speed-up start times on some
platforms.
The KX022A gets probe delayed for at least two reasons. It enables the
supply regulator, (which is likely to have ramp-up delay if it was
disabled) and additionally it delays while the sensor itself is
initializing.
Changing to asynchronous probing may cause problems. Some of which are
discussed in:
https://lore.kernel.org/all/
06db017f-e985-4434-8d1d-
02ca2100cca0@sirena.org.uk/
Enable asynchronous probing for KX022A.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/24cea76c282a28b7a4dba297ab627176f8097907.1683185765.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Matti Vaittinen [Thu, 4 May 2023 07:57:13 +0000 (10:57 +0300)]
iio: bu27034: Probe asynchronously
Devices which may take a while to initialize during probe and which have
no strong reason to probe synchronously can request asynchronous probing
as default probe strategy. This can speed-up start times on some
platforms.
The BU27034 gets probe delayed for at least two reasons. It enables the
supply regulator, (which is likely to have ramp-up delay if it was
disabled) and additionally it delays while the sensor itself is
initializing.
Changing to asynchronous probing may cause problems. Some of which are
discussed in:
https://lore.kernel.org/all/
06db017f-e985-4434-8d1d-
02ca2100cca0@sirena.org.uk/
Enabling async probing for the ROHM BU27034 should be fairly safe to try
though as there is no in-tree users for it yet. If the async probing
appears to be an issue we can switch easily back to synchronous (or
better yet, fix the actual problem).
Enable asynchronous probing for BU27034.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/e7088793e1868c77b1894b30cd026e8ed043ea7c.1683185765.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marijn Suijten [Mon, 10 Apr 2023 20:29:17 +0000 (22:29 +0200)]
dt-bindings: iio: adc: Require generic `channel` name for channel nodes
As discussed in [1] it is more convenient to use a generic `channel`
node name for ADC channels while storing a friendly - board-specific
instead of PMIC-specific - name in the label, if/when desired to
overwrite the channel description already contained (but previously
unused) in the driver [2].
The same `channel` node name pattern has also been set in
iio/adc/adc.yaml, but this generic binding is not inherited as base for
qcom,spmi-vadc bindings due to not having any other generic elements in
common, besides the node name rule and reg property.
Replace the .* name pattern with the `channel` literal, but leave the
label property optional for bindings to choose to fall back a channel
label hardcoded in the driver [2] instead.
[1]: https://lore.kernel.org/linux-arm-msm/
20221106193018.270106-1-marijn.suijten@somainline.org/T/#u
[2]: https://lore.kernel.org/linux-arm-msm/
20230116220909.196926-4-marijn.suijten@somainline.org/
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230410202917.247666-6-marijn.suijten@somainline.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Nuno Sá [Thu, 16 Feb 2023 10:14:52 +0000 (11:14 +0100)]
iio: buffer: fix coding style warnings
Just cosmetics. No functional change intended...
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20230216101452.591805-4-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Stefan Windfeldt-Prytz [Wed, 26 Apr 2023 11:57:30 +0000 (13:57 +0200)]
iio: light: Add support for TI OPT4001 light sensor
This driver uses the continuous mode of the chip and integration
time can be configured through sysfs.
The constants for calculating lux value differs between packaging
so it uses different compatible string for the two versions
"ti,opt4001-picostar" and "ti,opt4001-sot-5x3" since the device id
is the same.
Datasheet: https://www.ti.com/lit/gpn/opt4001
Signed-off-by: Stefan Windfeldt-Prytz <stefan.windfeldt-prytz@axis.com>
Link: https://lore.kernel.org/r/20230323-add-opt4001-driver-v3-2-62e121dab294@axis.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Stefan Windfeldt-Prytz [Wed, 26 Apr 2023 11:57:29 +0000 (13:57 +0200)]
dt-bindings: iio: light: Document TI OPT4001 light sensor
Add devicetree bindings for opt4001 ambient light sensor.
Signed-off-by: Stefan Windfeldt-Prytz <stefan.windfeldt-prytz@axis.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230323-add-opt4001-driver-v3-1-62e121dab294@axis.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Christophe JAILLET [Mon, 24 Apr 2023 07:11:51 +0000 (09:11 +0200)]
iio: adc: palmas: Remove the unneeded include <linux/i2c.h>
This driver does not use i2c, so there is no point in including
<linux/i2c.h>
Remove it.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/9d23cd04d7f99dc8d813584aae5268b57f92fcd8.1682320298.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Frank Wunderlich [Fri, 21 Apr 2023 13:20:42 +0000 (15:20 +0200)]
dt-bindings: iio: adc: Add support for MT7986
Add compatible string and specific clock property for mt7986.
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Link: https://lore.kernel.org/r/20230421132047.42166-3-linux@fw-web.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Sean Nyekjaer [Fri, 21 Apr 2023 08:38:58 +0000 (10:38 +0200)]
iio: adc: stm32-adc: add debug info if dt uses legacy channel config
Since nearly all stm32 dt's are using the legacy adc channel config,
we should warn users about using it.
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20230421083858.2613289-1-sean@geanix.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marius Hoch [Thu, 20 Apr 2023 23:26:31 +0000 (01:26 +0200)]
iio: light: al3320a: Handle ACPI device CALS0001
This sensor can be found as CALS0001 on the Lenovo Yoga
Tablet 2 series.
Tested on a Lenovo Yoga Tablet 2 1051-F.
Signed-off-by: Marius Hoch <mail@mariushoch.de>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230420232631.68864-1-mail@mariushoch.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Christophe JAILLET [Sat, 15 Apr 2023 16:25:41 +0000 (18:25 +0200)]
iio: accel: bma400: Simplify an error message
dev_err_probe() already display the error code. There is no need to
duplicate it explicitly in the error message.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/9373d41b0a1f3dc3fc0d31c1daaa19d9a7ec4dcd.1681575924.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marius Hoch [Sat, 15 Apr 2023 23:11:30 +0000 (01:11 +0200)]
dt-bindings: iio: st-sensors: Add LSM303D accelerometer+magnetometer
Same as the lsm9ds0, except that the lsm303d doesn't
feature a gyroscope.
Signed-off-by: Marius Hoch <mail@mariushoch.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Hans de Goede <hansg@kernel.org>
Link: https://lore.kernel.org/r/20230415231130.115094-7-mail@mariushoch.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marius Hoch [Sat, 15 Apr 2023 23:11:29 +0000 (01:11 +0200)]
iio: Comment that the LSM303D also has the Magnetometer DRDY
Per its datasheet, the LSM303D also features that pin.
Signed-off-by: Marius Hoch <mail@mariushoch.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Hans de Goede <hansg@kernel.org>
Link: https://lore.kernel.org/r/20230415231130.115094-6-mail@mariushoch.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marius Hoch [Sat, 15 Apr 2023 23:11:28 +0000 (01:11 +0200)]
iio: st_sensors: Add ACPI support for lsm303d to the LSM9DS0 IMU driver
The lsm303d can be found as ACCL0001 on various Lenovo devices,
including the Lenovo Yoga Tablet 2 1051-F, where I tested this
patch.
Dropped SPI support as per discussion in thread linked below.
Signed-off-by: Marius Hoch <mail@mariushoch.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Hans de Goede <hansg@kernel.org>
Link: https://lore.kernel.org/r/20230415231130.115094-5-mail@mariushoch.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marius Hoch [Sat, 15 Apr 2023 23:11:27 +0000 (01:11 +0200)]
iio: st_sensors: Add lsm303d support to the LSM9DS0 IMU driver
The lsm303d is basically the lsm9ds0 without the gyroscope
(which the LSM9DS0 IMU driver doesn't handle), as far as I
can tell.
Signed-off-by: Marius Hoch <mail@mariushoch.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Hans de Goede <hansg@kernel.org>
Link: https://lore.kernel.org/r/20230415231130.115094-4-mail@mariushoch.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marius Hoch [Sat, 15 Apr 2023 23:11:26 +0000 (01:11 +0200)]
iio: magnetometer: st_accel: Add LSM303D
The lsm303d has the same register mapping as the lsm9ds0,
thus we can just re-use that.
Tested on a Lenovo Yoga Tablet 2 1051-F.
Signed-off-by: Marius Hoch <mail@mariushoch.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Hans de Goede <hansg@kernel.org>
Link: https://lore.kernel.org/r/20230415231130.115094-3-mail@mariushoch.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marius Hoch [Sat, 15 Apr 2023 23:11:25 +0000 (01:11 +0200)]
iio: accel: st_accel: Add LSM303D
The lsm303d has the same register mapping as the lsm9ds0,
thus we can just re-use that.
Tested on a Lenovo Yoga Tablet 2 1051-F.
Signed-off-by: Marius Hoch <mail@mariushoch.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Hans de Goede <hansg@kernel.org>
Link: https://lore.kernel.org/r/20230415231130.115094-2-mail@mariushoch.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Luca Weiss [Thu, 13 Apr 2023 23:17:49 +0000 (01:17 +0200)]
dt-bindings: iio: adc: qcom,spmi-vadc: Allow 1/16 for pre-scaling
The channel ADC5_USB_IN_V_16 is using 1/16 pre-scaling on at least
pm7250b and pmi632. Allow that in the schema.
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230414-pmi632-v1-5-fe94dc414832@z3ntu.xyz
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Linus Torvalds [Sun, 7 May 2023 20:34:35 +0000 (13:34 -0700)]
Linux 6.4-rc1
Linus Torvalds [Sun, 7 May 2023 18:32:18 +0000 (11:32 -0700)]
Merge tag 'perf-tools-for-v6.4-3-2023-05-06' of git://git./linux/kernel/git/acme/linux
Pull perf tool updates from Arnaldo Carvalho de Melo:
"Third version of perf tool updates, with the build problems with with
using a 'vmlinux.h' generated from the main build fixed, and the bpf
skeleton build disabled by default.
Build:
- Require libtraceevent to build, one can disable it using
NO_LIBTRACEEVENT=1.
It is required for tools like 'perf sched', 'perf kvm', 'perf
trace', etc.
libtraceevent is available in most distros so installing
'libtraceevent-devel' should be a one-time event to continue
building perf as usual.
Using NO_LIBTRACEEVENT=1 produces tooling that is functional and
sufficient for lots of users not interested in those libtraceevent
dependent features.
- Allow Python support in 'perf script' when libtraceevent isn't
linked, as not all features requires it, for instance Intel PT does
not use tracepoints.
- Error if the python interpreter needed for jevents to work isn't
available and NO_JEVENTS=1 isn't set, preventing a build without
support for JSON vendor events, which is a rare but possible
condition. The two check error messages:
$(error ERROR: No python interpreter needed for jevents generation. Install python or build with NO_JEVENTS=1.)
$(error ERROR: Python interpreter needed for jevents generation too old (older than 3.6). Install a newer python or build with NO_JEVENTS=1.)
- Make libbpf 1.0 the minimum required when building with out of
tree, distro provided libbpf.
- Use libsdtc++'s and LLVM's libcxx's __cxa_demangle, a portable C++
demangler, add 'perf test' entry for it.
- Make binutils libraries opt in, as distros disable building with it
due to licensing, they were used for C++ demangling, for instance.
- Switch libpfm4 to opt-out rather than opt-in, if libpfm-devel (or
equivalent) isn't installed, we'll just have a build warning:
Makefile.config:1144: libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev
- Add a feature test for scandirat(), that is not implemented so far
in musl and uclibc, disabling features that need it, such as
scanning for tracepoints in /sys/kernel/tracing/events.
perf BPF filters:
- New feature where BPF can be used to filter samples, for instance:
$ sudo ./perf record -e cycles --filter 'period > 1000' true
$ sudo ./perf script
perf-exec 2273949 546850.708501: 5029 cycles:
ffffffff826f9e25 finish_wait+0x5 ([kernel.kallsyms])
perf-exec 2273949 546850.708508: 32409 cycles:
ffffffff826f9e25 finish_wait+0x5 ([kernel.kallsyms])
perf-exec 2273949 546850.708526: 143369 cycles:
ffffffff82b4cdbf xas_start+0x5f ([kernel.kallsyms])
perf-exec 2273949 546850.708600: 372650 cycles:
ffffffff8286b8f7 __pagevec_lru_add+0x117 ([kernel.kallsyms])
perf-exec 2273949 546850.708791: 482953 cycles:
ffffffff829190de __mod_memcg_lruvec_state+0x4e ([kernel.kallsyms])
true 2273949 546850.709036: 501985 cycles:
ffffffff828add7c tlb_gather_mmu+0x4c ([kernel.kallsyms])
true 2273949 546850.709292: 503065 cycles:
7f2446d97c03 _dl_map_object_deps+0x973 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2)
- In addition to 'period' (PERF_SAMPLE_PERIOD), the other
PERF_SAMPLE_ can be used for filtering, and also some other sample
accessible values, from tools/perf/Documentation/perf-record.txt:
Essentially the BPF filter expression is:
<term> <operator> <value> (("," | "||") <term> <operator> <value>)*
The <term> can be one of:
ip, id, tid, pid, cpu, time, addr, period, txn, weight, phys_addr,
code_pgsz, data_pgsz, weight1, weight2, weight3, ins_lat, retire_lat,
p_stage_cyc, mem_op, mem_lvl, mem_snoop, mem_remote, mem_lock,
mem_dtlb, mem_blk, mem_hops
The <operator> can be one of:
==, !=, >, >=, <, <=, &
The <value> can be one of:
<number> (for any term)
na, load, store, pfetch, exec (for mem_op)
l1, l2, l3, l4, cxl, io, any_cache, lfb, ram, pmem (for mem_lvl)
na, none, hit, miss, hitm, fwd, peer (for mem_snoop)
remote (for mem_remote)
na, locked (for mem_locked)
na, l1_hit, l1_miss, l2_hit, l2_miss, any_hit, any_miss, walk, fault (for mem_dtlb)
na, by_data, by_addr (for mem_blk)
hops0, hops1, hops2, hops3 (for mem_hops)
perf lock contention:
- Show lock type with address.
- Track and show mmap_lock, siglock and per-cpu rq_lock with address.
This is done for mmap_lock by following the current->mm pointer:
$ sudo ./perf lock con -abl -- sleep 10
contended total wait max wait avg wait address symbol
...
16344 312.30 ms 2.22 ms 19.11 us
ffff8cc702595640
17686 310.08 ms 1.49 ms 17.53 us
ffff8cc7025952c0
3 84.14 ms 45.79 ms 28.05 ms
ffff8cc78114c478 mmap_lock
3557 76.80 ms 68.75 us 21.59 us
ffff8cc77ca3af58
1 68.27 ms 68.27 ms 68.27 ms
ffff8cda745dfd70
9 54.53 ms 7.96 ms 6.06 ms
ffff8cc7642a48b8 mmap_lock
14629 44.01 ms 60.00 us 3.01 us
ffff8cc7625f9ca0
3481 42.63 ms 140.71 us 12.24 us
ffffffff937906ac vmap_area_lock
16194 38.73 ms 42.15 us 2.39 us
ffff8cd397cbc560
11 38.44 ms 10.39 ms 3.49 ms
ffff8ccd6d12fbb8 mmap_lock
1 5.43 ms 5.43 ms 5.43 ms
ffff8cd70018f0d8
1674 5.38 ms 422.93 us 3.21 us
ffffffff92e06080 tasklist_lock
581 4.51 ms 130.68 us 7.75 us
ffff8cc9b1259058
5 3.52 ms 1.27 ms 703.23 us
ffff8cc754510070
112 3.47 ms 56.47 us 31.02 us
ffff8ccee38b3120
381 3.31 ms 73.44 us 8.69 us
ffffffff93790690 purge_vmap_area_lock
255 3.19 ms 36.35 us 12.49 us
ffff8d053ce30c80
- Update default map size to 16384.
- Allocate single letter option -M for --map-nr-entries, as it is
proving being frequently used.
- Fix struct rq lock access for older kernels with BPF's CO-RE
(Compile once, run everywhere).
- Fix problems found with MSAn.
perf report/top:
- Add inline information when using --call-graph=fp or lbr, as was
already done to the --call-graph=dwarf callchain mode.
- Improve the 'srcfile' sort key performance by really using an
optimization introduced in 6.2 for the 'srcline' sort key that
avoids calling addr2line for comparision with each sample.
perf sched:
- Make 'perf sched latency/map/replay' to use "sched:sched_waking"
instead of "sched:sched_waking", consistent with 'perf record'
since
d566a9c2d482 ("perf sched: Prefer sched_waking event when it
exists").
perf ftrace:
- Make system wide the default target for latency subcommand, run the
following command then generate some network traffic and press
control+C:
# perf ftrace latency -T __kfree_skb
^C
DURATION | COUNT | GRAPH |
0 - 1 us | 27 | ############# |
1 - 2 us | 22 | ########### |
2 - 4 us | 8 | #### |
4 - 8 us | 5 | ## |
8 - 16 us | 24 | ############ |
16 - 32 us | 2 | # |
32 - 64 us | 1 | |
64 - 128 us | 0 | |
128 - 256 us | 0 | |
256 - 512 us | 0 | |
512 - 1024 us | 0 | |
1 - 2 ms | 0 | |
2 - 4 ms | 0 | |
4 - 8 ms | 0 | |
8 - 16 ms | 0 | |
16 - 32 ms | 0 | |
32 - 64 ms | 0 | |
64 - 128 ms | 0 | |
128 - 256 ms | 0 | |
256 - 512 ms | 0 | |
512 - 1024 ms | 0 | |
1 - ... s | 0 | |
#
perf top:
- Add --branch-history (LBR: Last Branch Record) option, just like
already available for 'perf record'.
- Fix segfault in thread__comm_len() where thread->comm was being
used outside thread->comm_lock.
perf annotate:
- Allow configuring objdump and addr2line in ~/.perfconfig., so that
you can use alternative binaries, such as llvm's.
perf kvm:
- Add TUI mode for 'perf kvm stat report'.
Reference counting:
- Add reference count checking infrastructure to check for use after
free, done to the 'cpumap', 'namespaces', 'maps' and 'map' structs,
more to come.
To build with it use -DREFCNT_CHECKING=1 in the make command line
to build tools/perf. Documented at:
https://perf.wiki.kernel.org/index.php/Reference_Count_Checking
- The above caught, for instance, fix, present in this series:
- Fix maps use after put in 'perf test "Share thread maps"':
'maps' is copied from leader, but the leader is put on line 79
and then 'maps' is used to read the reference count below - so
a use after put, with the put of maps happening within
thread__put.
Fixed by reversing the order of puts so that the leader is put
last.
- Also several fixes were made to places where reference counts were
not being held.
- Make this one of the tests in 'make -C tools/perf build-test' to
regularly build test it and to make sure no direct access to the
reference counted structs are made, doing that via accessors to
check the validity of the struct pointer.
ARM64:
- Fix 'perf report' segfault when filtering coresight traces by
sparse lists of CPUs.
- Add support for 'simd' as a sort field for 'perf report', to show
ARM's NEON SIMD's predicate flags: "partial" and "empty".
arm64 vendor events:
- Add N1 metrics.
Intel vendor events:
- Add graniterapids, grandridge and sierraforrest events.
- Refresh events for: alderlake, aldernaken, broadwell, broadwellde,
broadwellx, cascadelakx, haswell, haswellx, icelake, icelakex,
jaketown, meteorlake, knightslanding, sandybridge, sapphirerapids,
silvermont, skylake, tigerlake and westmereep-dp
- Refresh metrics for alderlake-n, broadwell, broadwellde,
broadwellx, haswell, haswellx, icelakex, ivybridge, ivytown and
skylakex.
perf stat:
- Implement --topdown using JSON metrics.
- Add TopdownL1 JSON metric as a default if present, but disable it
for now for some Intel hybrid architectures, a series of patches
addressing this is being reviewed and will be submitted for v6.5.
- Use metrics for --smi-cost.
- Update topdown documentation.
Vendor events (JSON) infrastructure:
- Add support for computing and printing metric threshold values. For
instance, here is one found in thesapphirerapids json file:
{
"BriefDescription": "Percentage of cycles spent in System Management Interrupts.",
"MetricExpr": "((msr@aperf@ - cycles) / msr@aperf@ if msr@smi@ > 0 else 0)",
"MetricGroup": "smi",
"MetricName": "smi_cycles",
"MetricThreshold": "smi_cycles > 0.1",
"ScaleUnit": "100%"
},
- Test parsing metric thresholds with the fake PMU in 'perf test
pmu-events'.
- Support for printing metric thresholds in 'perf list'.
- Add --metric-no-threshold option to 'perf stat'.
- Add rand (reverse and) and has_pmem (optane memory) support to
metrics.
- Sort list of input files to avoid depending on the order from
readdir() helping in obtaining reproducible builds.
S/390:
- Add common metrics: - CPI (cycles per instruction), prbstate (ratio
of instructions executed in problem state compared to total number
of instructions), l1mp (Level one instruction and data cache misses
per 100 instructions).
- Add cache metrics for z13, z14, z15 and z16.
- Add metric for TLB and cache.
ARM:
- Add raw decoding for SPE (Statistical Profiling Extension) v1.3 MTE
(Memory Tagging Extension) and MOPS (Memory Operations) load/store.
Intel PT hardware tracing:
- Add event type names UINTR (User interrupt delivered) and UIRET
(Exiting from user interrupt routine), documented in table 32-50
"CFE Packet Type and Vector Fields Details" in the Intel Processor
Trace chapter of The Intel SDM Volume 3 version 078.
- Add support for new branch instructions ERETS and ERETU.
- Fix CYC timestamps after standalone CBR
ARM CoreSight hardware tracing:
- Allow user to override timestamp and contextid settings.
- Fix segfault in dso lookup.
- Fix timeless decode mode detection.
- Add separate decode paths for timeless and per-thread modes.
auxtrace:
- Fix address filter entire kernel size.
Miscellaneous:
- Fix use-after-free and unaligned bugs in the PLT handling routines.
- Use zfree() to reduce chances of use after free.
- Add missing 0x prefix for addresses printed in hexadecimal in 'perf
probe'.
- Suppress massive unsupported target platform errors in the unwind
code.
- Fix return incorrect build_id size in elf_read_build_id().
- Fix 'perf scripts intel-pt-events.py' IPC output for Python 2 .
- Add missing new parameter in kfree_skb tracepoint to the python
scripts using it.
- Add 'perf bench syscall fork' benchmark.
- Add support for printing PERF_MEM_LVLNUM_UNC (Uncached access) in
'perf mem'.
- Fix wrong size expectation for perf test 'Setup struct
perf_event_attr' caused by the patch adding
perf_event_attr::config3.
- Fix some spelling mistakes"
* tag 'perf-tools-for-v6.4-3-2023-05-06' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (365 commits)
Revert "perf build: Make BUILD_BPF_SKEL default, rename to NO_BPF_SKEL"
Revert "perf build: Warn for BPF skeletons if endian mismatches"
perf metrics: Fix SEGV with --for-each-cgroup
perf bpf skels: Stop using vmlinux.h generated from BTF, use subset of used structs + CO-RE
perf stat: Separate bperf from bpf_profiler
perf test record+probe_libc_inet_pton: Fix call chain match on x86_64
perf test record+probe_libc_inet_pton: Fix call chain match on s390
perf tracepoint: Fix memory leak in is_valid_tracepoint()
perf cs-etm: Add fix for coresight trace for any range of CPUs
perf build: Fix unescaped # in perf build-test
perf unwind: Suppress massive unsupported target platform errors
perf script: Add new parameter in kfree_skb tracepoint to the python scripts using it
perf script: Print raw ip instead of binary offset for callchain
perf symbols: Fix return incorrect build_id size in elf_read_build_id()
perf list: Modify the warning message about scandirat(3)
perf list: Fix memory leaks in print_tracepoint_events()
perf lock contention: Rework offset calculation with BPF CO-RE
perf lock contention: Fix struct rq lock access
perf stat: Disable TopdownL1 on hybrid
perf stat: Avoid SEGV on counter->name
...
Linus Torvalds [Sun, 7 May 2023 18:04:26 +0000 (11:04 -0700)]
Merge tag 'core-debugobjects-2023-05-06' of git://git./linux/kernel/git/tip/tip
Pull debugobjects fix from Thomas Gleixner:
"A single fix for debugobjects:
The recent fix to ensure atomicity of lookup and allocation
inadvertently broke the pool refill mechanism, so that debugobject
OOMs now in certain situations. The reason is that the functions which
got updated no longer invoke debug_objecs_init(), which is now the
only place to care about refilling the tracking object pool.
Restore the original behaviour by adding explicit refill opportunities
to those places"
* tag 'core-debugobjects-2023-05-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
debugobject: Ensure pool refill (again)
Linus Torvalds [Sun, 7 May 2023 17:57:14 +0000 (10:57 -0700)]
Merge tag 'v6.4-p2' of git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
- A long-standing bug in crypto_engine
- A buggy but harmless check in the sun8i-ss driver
- A regression in the CRYPTO_USER interface
* tag 'v6.4-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: api - Fix CRYPTO_USER checks for report function
crypto: engine - fix crypto_queue backlog handling
crypto: sun8i-ss - Fix a test in sun8i_ss_setup_ivs()
Linus Torvalds [Sun, 7 May 2023 17:46:21 +0000 (10:46 -0700)]
Merge tag '6.4-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"smb3 client fixes, mostly DFS or reconnect related:
- Two DFS connection sharing fixes
- DFS refresh fix
- Reconnect fix
- Two potential use after free fixes
- Also print prefix patch in mount debug msg
- Two small cleanup fixes"
* tag '6.4-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Remove unneeded semicolon
cifs: fix sharing of DFS connections
cifs: avoid potential races when handling multiple dfs tcons
cifs: protect access of TCP_Server_Info::{origin,leaf}_fullpath
cifs: fix potential race when tree connecting ipc
cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname
cifs: print smb3_fs_context::source when mounting
cifs: protect session status check in smb2_reconnect()
SMB3.1.1: correct definition for app_instance_id create contexts
Linus Torvalds [Sun, 7 May 2023 17:31:45 +0000 (10:31 -0700)]
Merge tag 'clk-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A couple more patches that would be good to get into -rc1:
- Revert an i.MX patch that's causing video failures because division
math goes sideways
- Fix a clang + W=1 build isue where FIELD_PREP() is taking a 32-bit
variable instead of the usual u64 type
- Fix a Kconfig bug in the StarFive JH7110 clk config that selects a
reset controller when it can't be selected"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: starfive: Fix RESET_STARFIVE_JH7110 can't be selected in a specified case
clk: sp7021: Adjust width of _m in HWM_FIELD_PREP()
Revert "clk: imx: composite-8m: Add support to determine_rate"
Linus Torvalds [Sun, 7 May 2023 17:17:33 +0000 (10:17 -0700)]
Merge tag 'mailbox-v6.4' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar:
- mailbox api: allow direct registration to a channel and convert omap
and pcc to use mbox_bind_client
- omap and hi6220 : use of_property_read_bool
- test: fix double-free and use spinlock header
- rockchip and bcm-pdc: drop of_match_ptr
- mpfs: change config symbol
- mediatek gce: support MT6795
- qcom apcs: consolidate of_device_id and support IPQ9574
* tag 'mailbox-v6.4' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
dt-bindings: mailbox: qcom: add compatible for IPQ9574 SoC
mailbox: qcom-apcs-ipc: do not grow the of_device_id
dt-bindings: mailbox: qcom,apcs-kpss-global: use fallbacks for few variants
dt-bindings: mailbox: mediatek,gce-mailbox: Add support for MT6795
mailbox: mpfs: convert SOC_MICROCHIP_POLARFIRE to ARCH_MICROCHIP_POLARFIRE
mailbox: bcm-pdc: drop of_match_ptr for ID table
mailbox: rockchip: drop of_match_ptr for ID table
mailbox: mailbox-test: Fix potential double-free in mbox_test_message_write()
mailbox: mailbox-test: Explicitly include header for spinlock support
mailbox: Use of_property_read_bool() for boolean properties
mailbox: pcc: Use mbox_bind_client
mailbox: omap: Use mbox_bind_client
mailbox: Allow direct registration to a channel
Linus Torvalds [Sun, 7 May 2023 17:00:09 +0000 (10:00 -0700)]
Merge tag 'for-6.4/io_uring-2023-05-07' of git://git.kernel.dk/linux
Pull more io_uring updates from Jens Axboe:
"Nothing major in here, just two different parts:
- A small series from Breno that enables passing the full SQE down
for ->uring_cmd().
This is a prerequisite for enabling full network socket operations.
Queued up a bit late because of some stylistic concerns that got
resolved, would be nice to have this in 6.4-rc1 so the dependent
work will be easier to handle for 6.5.
- Fix for the huge page coalescing, which was a regression introduced
in the 6.3 kernel release (Tobias)"
* tag 'for-6.4/io_uring-2023-05-07' of git://git.kernel.dk/linux:
io_uring: Remove unnecessary BUILD_BUG_ON
io_uring: Pass whole sqe to commands
io_uring: Create a helper to return the SQE size
io_uring/rsrc: check for nonconsecutive pages
Arnaldo Carvalho de Melo [Sat, 6 May 2023 21:07:37 +0000 (18:07 -0300)]
Revert "perf build: Make BUILD_BPF_SKEL default, rename to NO_BPF_SKEL"
This reverts commit
a980755beb5aca9002e1c95ba519b83a44242b5b.
We need to better polish building with BPF skels, so revert back to
making it an experimental feature that has to be explicitely enabled
using BUILD_BPF_SKEL=1.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Sat, 6 May 2023 21:06:43 +0000 (18:06 -0300)]
Revert "perf build: Warn for BPF skeletons if endian mismatches"
This reverts commit
51924ae69eea5bc90b5da525fbcf4bbd5f8551b3.
We need to better polish building with BPF skels, so revert back to
making it an experimental feature that has to be explicitely enabled
using BUILD_BPF_SKEL=1.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linus Torvalds [Sat, 6 May 2023 18:43:08 +0000 (11:43 -0700)]
Merge tag 'mm-stable-2023-05-06-10-49' of git://git./linux/kernel/git/akpm/mm
Pull dmapool updates - again - from Andrew Morton:
"Reinstate the dmapool changes which were accidentally removed by a
mishap on the last commit in the previous attempt at the series"
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup").
[ The whole old series:
def8574308ed..
2d55c16c0c54 results in an empty
diff because that last commit ended up being just a revert of all that
came everything before it. - Linus ]
* tag 'mm-stable-2023-05-06-10-49' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
dmapool: link blocks across pages
dmapool: don't memset on free twice
dmapool: simplify freeing
dmapool: consolidate page initialization
dmapool: rearrange page alloc failure handling
dmapool: move debug code to own functions
dmapool: speedup DMAPOOL_DEBUG with init_on_alloc
dmapool: cleanup integer types
dmapool: use sysfs_emit() instead of scnprintf()
dmapool: remove checks for dev == NULL
Linus Torvalds [Sat, 6 May 2023 18:25:03 +0000 (11:25 -0700)]
Merge tag 'mm-hotfixes-stable-2023-05-06-10-45' of git://git./linux/kernel/git/akpm/mm
Pull hotfixes from Andrew Morton:
"Five hotfixes.
Three are cc:stable, two pertain to merge window changes"
* tag 'mm-hotfixes-stable-2023-05-06-10-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
afs: fix the afs_dir_get_folio return value
nilfs2: do not write dirty data after degenerating to read-only
mm: do not reclaim private data from pinned page
nilfs2: fix infinite loop in nilfs_mdt_get_block()
mm/mmap/vma_merge: always check invariants
Keith Busch [Thu, 26 Jan 2023 21:51:24 +0000 (13:51 -0800)]
dmapool: link blocks across pages
The allocated dmapool pages are never freed for the lifetime of the pool.
There is no need for the two level list+stack lookup for finding a free
block since nothing is ever removed from the list. Just use a simple
stack, reducing time complexity to constant.
The implementation inserts the stack linking elements and the dma handle
of the block within itself when freed. This means the smallest possible
dmapool block is increased to at most 16 bytes to accommodate these
fields, but there are no exisiting users requesting a dma pool smaller
than that anyway.
Removing the list has a significant change in performance. Using the
kernel's micro-benchmarking self test:
Before:
# modprobe dmapool_test
dmapool test: size:16 blocks:8192 time:57282
dmapool test: size:64 blocks:8192 time:172562
dmapool test: size:256 blocks:8192 time:789247
dmapool test: size:1024 blocks:2048 time:371823
dmapool test: size:4096 blocks:1024 time:362237
After:
# modprobe dmapool_test
dmapool test: size:16 blocks:8192 time:24997
dmapool test: size:64 blocks:8192 time:26584
dmapool test: size:256 blocks:8192 time:33542
dmapool test: size:1024 blocks:2048 time:9022
dmapool test: size:4096 blocks:1024 time:6045
The module test allocates quite a few blocks that may not accurately
represent how these pools are used in real life. For a more marco level
benchmark, running fio high-depth + high-batched on nvme, this patch shows
submission and completion latency reduced by ~100usec each, 1% IOPs
improvement, and perf record's time spent in dma_pool_alloc/free were
reduced by half.
[kbusch@kernel.org: push new blocks in ascending order]
Link: https://lkml.kernel.org/r/20230221165400.1595247-1-kbusch@meta.com
Link: https://lkml.kernel.org/r/20230126215125.4069751-12-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Keith Busch [Thu, 26 Jan 2023 21:51:23 +0000 (13:51 -0800)]
dmapool: don't memset on free twice
If debug is enabled, dmapool will poison the range, so no need to clear it
to 0 immediately before writing over it.
Link: https://lkml.kernel.org/r/20230126215125.4069751-11-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Keith Busch [Thu, 26 Jan 2023 21:51:22 +0000 (13:51 -0800)]
dmapool: simplify freeing
The actions for busy and not busy are mostly the same, so combine these
and remove the unnecessary function. Also, the pool is about to be freed
so there's no need to poison the page data since we only check for poison
on alloc, which can't be done on a freed pool.
Link: https://lkml.kernel.org/r/20230126215125.4069751-10-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Keith Busch [Thu, 26 Jan 2023 21:51:21 +0000 (13:51 -0800)]
dmapool: consolidate page initialization
Various fields of the dma pool are set in different places. Move it all
to one function.
Link: https://lkml.kernel.org/r/20230126215125.4069751-9-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Keith Busch [Thu, 26 Jan 2023 21:51:20 +0000 (13:51 -0800)]
dmapool: rearrange page alloc failure handling
Handle the error in a condition so the good path can be in the normal
flow.
Link: https://lkml.kernel.org/r/20230126215125.4069751-8-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Keith Busch [Thu, 26 Jan 2023 21:51:19 +0000 (13:51 -0800)]
dmapool: move debug code to own functions
Clean up the normal path by moving the debug code outside it.
Link: https://lkml.kernel.org/r/20230126215125.4069751-7-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tony Battersby [Thu, 26 Jan 2023 21:51:18 +0000 (13:51 -0800)]
dmapool: speedup DMAPOOL_DEBUG with init_on_alloc
Avoid double-memset of the same allocated memory in dma_pool_alloc() when
both DMAPOOL_DEBUG is enabled and init_on_alloc=1.
Link: https://lkml.kernel.org/r/20230126215125.4069751-6-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tony Battersby [Thu, 26 Jan 2023 21:51:17 +0000 (13:51 -0800)]
dmapool: cleanup integer types
To represent the size of a single allocation, dmapool currently uses
'unsigned int' in some places and 'size_t' in other places. Standardize
on 'unsigned int' to reduce overhead, but use 'size_t' when counting all
the blocks in the entire pool.
Link: https://lkml.kernel.org/r/20230126215125.4069751-5-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tony Battersby [Thu, 26 Jan 2023 21:51:16 +0000 (13:51 -0800)]
dmapool: use sysfs_emit() instead of scnprintf()
Use sysfs_emit instead of scnprintf, snprintf or sprintf.
Link: https://lkml.kernel.org/r/20230126215125.4069751-4-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tony Battersby [Thu, 26 Jan 2023 21:51:15 +0000 (13:51 -0800)]
dmapool: remove checks for dev == NULL
dmapool originally tried to support pools without a device because
dma_alloc_coherent() supports allocations without a device. But nobody
ended up using dma pools without a device, and trying to do so will result
in an oops. So remove the checks for pool->dev == NULL since they are
unneeded bloat.
[kbusch@kernel.org: add check for null dev on create]
Link: https://lkml.kernel.org/r/20230126215125.4069751-3-kbusch@meta.com
Fixes:
2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linus Torvalds [Sat, 6 May 2023 17:16:19 +0000 (10:16 -0700)]
nfs: fix mis-merged __filemap_get_folio() error check
Fix another case of an incorrect check for the returned 'folio' value
from __filemap_get_folio().
The failure case used to return NULL, but was changed by commit
66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio").
But in the meantime, commit
ec108d3cc766 ("NFS: Convert readdir page
array functions to use a folio") added a new user of that function.
And my merge of the two did not fix this up correctly.
The ext4 merge had the same issue, but that one had been caught in
linux-next and got properly fixed while merging.
Fixes:
0127f25b5dfc ("Merge tag 'nfs-for-6.4-1' of git://git.linux-nfs.org/projects/anna/linux-nfs")
Cc: Anna Schumaker <anna@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Christoph Hellwig [Wed, 3 May 2023 15:45:26 +0000 (17:45 +0200)]
afs: fix the afs_dir_get_folio return value
Keep returning NULL on failure instead of letting an ERR_PTR escape to
callers that don't expect it.
Link: https://lkml.kernel.org/r/20230503154526.1223095-2-hch@lst.de
Fixes:
66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: David Howells <dhowells@redhat.com>
Tested-by: David Howells <dhowells@redhat.com>
Cc: Marc Dionne <marc.dionne@auristor.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Ryusuke Konishi [Thu, 27 Apr 2023 01:15:26 +0000 (10:15 +0900)]
nilfs2: do not write dirty data after degenerating to read-only
According to syzbot's report, mark_buffer_dirty() called from
nilfs_segctor_do_construct() outputs a warning with some patterns after
nilfs2 detects metadata corruption and degrades to read-only mode.
After such read-only degeneration, page cache data may be cleared through
nilfs_clear_dirty_page() which may also clear the uptodate flag for their
buffer heads. However, even after the degeneration, log writes are still
performed by unmount processing etc., which causes mark_buffer_dirty() to
be called for buffer heads without the "uptodate" flag and causes the
warning.
Since any writes should not be done to a read-only file system in the
first place, this fixes the warning in mark_buffer_dirty() by letting
nilfs_segctor_do_construct() abort early if in read-only mode.
This also changes the retry check of nilfs_segctor_write_out() to avoid
unnecessary log write retries if it detects -EROFS that
nilfs_segctor_do_construct() returned.
Link: https://lkml.kernel.org/r/20230427011526.13457-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+2af3bc9585be7f23f290@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=2af3bc9585be7f23f290
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Jan Kara [Fri, 28 Apr 2023 12:41:40 +0000 (14:41 +0200)]
mm: do not reclaim private data from pinned page
If the page is pinned, there's no point in trying to reclaim it.
Furthermore if the page is from the page cache we don't want to reclaim
fs-private data from the page because the pinning process may be writing
to the page at any time and reclaiming fs private info on a dirty page can
upset the filesystem (see link below).
Link: https://lore.kernel.org/linux-mm/20180103100430.GE4911@quack2.suse.cz
Link: https://lkml.kernel.org/r/20230428124140.30166-1-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Ryusuke Konishi [Sun, 30 Apr 2023 19:30:46 +0000 (04:30 +0900)]
nilfs2: fix infinite loop in nilfs_mdt_get_block()
If the disk image that nilfs2 mounts is corrupted and a virtual block
address obtained by block lookup for a metadata file is invalid,
nilfs_bmap_lookup_at_level() may return the same internal return code as
-ENOENT, meaning the block does not exist in the metadata file.
This duplication of return codes confuses nilfs_mdt_get_block(), causing
it to read and create a metadata block indefinitely.
In particular, if this happens to the inode metadata file, ifile,
semaphore i_rwsem can be left held, causing task hangs in lock_mount.
Fix this issue by making nilfs_bmap_lookup_at_level() treat virtual block
address translation failures with -ENOENT as metadata corruption instead
of returning the error code.
Link: https://lkml.kernel.org/r/20230430193046.6769-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+221d75710bde87fa0e97@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=221d75710bde87fa0e97
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Lorenzo Stoakes [Sun, 30 Apr 2023 20:19:17 +0000 (21:19 +0100)]
mm/mmap/vma_merge: always check invariants
We may still have inconsistent input parameters even if we choose not to
merge and the vma_merge() invariant checks are useful for checking this
with no production runtime cost (these are only relevant when
CONFIG_DEBUG_VM is specified).
Therefore, perform these checks regardless of whether we merge.
This is relevant, as a recent issue (addressed in commit "mm/mempolicy:
Correctly update prev when policy is equal on mbind") in the mbind logic
was only picked up in the 6.2.y stable branch where these assertions are
performed prior to determining mergeability.
Had this remained the same in mainline this issue may have been picked up
faster, so moving forward let's always check them.
Link: https://lkml.kernel.org/r/df548a6ae3fa135eec3b446eb3dae8eb4227da97.1682885809.git.lstoakes@gmail.com
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Matthew Wilcox [Sat, 6 May 2023 16:04:14 +0000 (17:04 +0100)]
filemap: Handle error return from __filemap_get_folio()
Smatch reports that filemap_fault() was missed in the conversion of
__filemap_get_folio() error returns from NULL to ERR_PTR.
Fixes:
66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Reported-by: syzbot+48011b86c8ea329af1b9@syzkaller.appspotmail.com
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 6 May 2023 15:37:28 +0000 (08:37 -0700)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi
Pull more SCSI updates from James Bottomley:
"Six late arriving patches for the merge window. Five are minor
assorted fixes and updates.
The IPR driver change removes SATA support, which will now allow a
major cleanup in the ATA subsystem because it was the only driver
still using the old attachment mechanism. The driver is only used on
power systems and SATA was used to support a DVD device, which has
long been moved to a different hba. IBM chose this route instead of
porting ipr to the newer SATA interfaces"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qedi: Fix use after free bug in qedi_remove()
scsi: ufs: core: mcq: Fix &hwq->cq_lock deadlock issue
scsi: ipr: Remove several unused variables
scsi: pm80xx: Log device registration
scsi: ipr: Remove SATA support
scsi: scsi_debug: Abort commands from scsi_debug_device_reset()
Linus Torvalds [Sat, 6 May 2023 15:28:58 +0000 (08:28 -0700)]
Merge tag 'for-6.4/block-2023-05-06' of git://git.kernel.dk/linux
Pull more block updates from Jens Axboe:
- MD pull request via Song:
- Improve raid5 sequential IO performance on spinning disks, which
fixes a regression since v6.0 (Jan Kara)
- Fix bitmap offset types, which fixes an issue introduced in this
merge window (Jonathan Derrick)
- Cleanup of hweight type used for cgroup writeback (Maxim)
- Fix a regression with the "has_submit_bio" changes across partitions
(Ming)
- Cleanup of QUEUE_FLAG_ADD_RANDOM clearing.
We used to set this flag on queues non blk-mq queues, and hence some
drivers clear it unconditionally. Since all of these have since been
converted to true blk-mq drivers, drop the useless clear as the bit
is not set (Chaitanya)
- Fix the flags being set in a bio for a flush for drbd (Christoph)
- Cleanup and deduplication of the code handling setting block device
capacity (Damien)
- Fix for ublk handling IO timeouts (Ming)
- Fix for a regression in blk-cgroup teardown (Tao)
- NBD documentation and code fixes (Eric)
- Convert blk-integrity to using device_attributes rather than a second
kobject to manage lifetimes (Thomas)
* tag 'for-6.4/block-2023-05-06' of git://git.kernel.dk/linux:
ublk: add timeout handler
drbd: correctly submit flush bio on barrier
mailmap: add mailmap entries for Jens Axboe
block: Skip destroyed blkg when restart in blkg_destroy_all()
writeback: fix call of incorrect macro
md: Fix bitmap offset type in sb writer
md/raid5: Improve performance for sequential IO
docs nbd: userspace NBD now favors github over sourceforge
block nbd: use req.cookie instead of req.handle
uapi nbd: add cookie alias to handle
uapi nbd: improve doc links to userspace spec
blk-integrity: register sysfs attributes on struct device
blk-integrity: convert to struct device_attribute
blk-integrity: use sysfs_emit
block/drivers: remove dead clear of random flag
block: sync part's ->bd_has_submit_bio with disk's
block: Cleanup set_capacity()/bdev_set_nr_sectors()
Linus Torvalds [Sat, 6 May 2023 15:15:20 +0000 (08:15 -0700)]
Merge tag 'pipe-nonblock-2023-05-06' of git://git.kernel.dk/linux
Pull nonblocking pipe io_uring support from Jens Axboe:
"Here's the revised edition of the FMODE_NOWAIT support for pipes, in
which we just flag it as such supporting FMODE_NOWAIT unconditionally,
but clear it if we ever end up using splice/vmsplice on the pipe.
The pipe read/write side is perfectly fine for nonblocking IO, however
splice and vmsplice can potentially wait for IO with the pipe lock
held"
* tag 'pipe-nonblock-2023-05-06' of git://git.kernel.dk/linux:
pipe: set FMODE_NOWAIT on pipes
splice: clear FMODE_NOWAIT on file if splice/vmsplice is used
Linus Torvalds [Sat, 6 May 2023 15:07:11 +0000 (08:07 -0700)]
Merge tag 'sound-fix-6.4-rc1' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes for rc1.
The only (LOC-wise) dominant change was ASoC Qualcomm fix, but most of
it was merely a code shuffling.
Another significant change here is for ALSA PCM core; it received a
revert and a series of fixes for PCM auto-silencing where it caused a
regression in the previous PR for rc1.
Others are all small: ASoC Intel fixes, various quirks for ASoC AMD,
HD-audio and USB-audio, the continued legacy emu10k1 code cleanup, and
some documentation updates"
* tag 'sound-fix-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (23 commits)
ALSA: pcm: use exit controlled loop in snd_pcm_playback_silence()
ALSA: pcm: simplify top-up mode init in snd_pcm_playback_silence()
ALSA: pcm: playback silence - move silence variable updates to separate function
ALSA: pcm: playback silence - remove extra code
ALSA: pcm: fix playback silence - correct incremental silencing
ALSA: pcm: fix playback silence - use the actual new_hw_ptr for the threshold mode
ALSA: pcm: Revert "ALSA: pcm: rewrite snd_pcm_playback_silence()"
ALSA: hda/realtek: Fix mute and micmute LEDs for an HP laptop
ALSA: caiaq: input: Add error handling for unsupported input methods in `snd_usb_caiaq_input_init`
ALSA: usb-audio: Add quirk for Pioneer DDJ-800
ALSA: hda/realtek: support HP Pavilion Aero 13-be0xxx Mute LED
ASoC: Intel: soc-acpi-cht: Add quirk for Nextbook Ares 8A tablet
ASoC: amd: yc: Add Asus VivoBook Pro 14 OLED M6400RC to the quirks list for acp6x
ASoC: codecs: wcd938x: fix accessing regmap on unattached devices
ALSA: docs: Fix code block indentation in ALSA driver example
ALSA: docs: Extend module parameters description
ALSA: hda/realtek: Add quirk for ASUS UM3402YAR using CS35L41
ALSA: emu10k1: use more existing defines instead of open-coded numbers
ASoC: amd: yc: Add ASUS M3402RA into DMI table
ALSA: hda/realtek: Add quirk for ThinkPad P1 Gen 6
...
Linus Torvalds [Sat, 6 May 2023 15:06:09 +0000 (08:06 -0700)]
Merge tag 'regulator-fix-v6.4' of git://git./linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"A trivial typo fix that came in during the merge window"
* tag 'regulator-fix-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: consumer.rst: fix 'regulator_enable' typo.
Linus Torvalds [Sat, 6 May 2023 02:16:58 +0000 (19:16 -0700)]
Merge tag '6.4-rc-ksmbd-server-fixes-part2' of git://git.samba.org/ksmbd
Pull ksmbd server fixes from Steve French:
"Ten ksmbd server fixes, including some important security fixes:
- Two use after free fixes
- Fix RCU callback race
- Deadlock fix
- Three patches to prevent session setup attacks
- Prevent guest users from establishing multichannel sessions
- Fix null pointer dereference in query FS info
- Memleak fix"
* tag '6.4-rc-ksmbd-server-fixes-part2' of git://git.samba.org/ksmbd:
ksmbd: call rcu_barrier() in ksmbd_server_exit()
ksmbd: fix racy issue under cocurrent smb2 tree disconnect
ksmbd: fix racy issue from smb2 close and logoff with multichannel
ksmbd: not allow guest user on multichannel
ksmbd: fix deadlock in ksmbd_find_crypto_ctx()
ksmbd: block asynchronous requests when making a delay on session setup
ksmbd: destroy expired sessions
ksmbd: fix racy issue from session setup and logoff
ksmbd: fix NULL pointer dereference in smb2_get_info_filesystem()
ksmbd: fix memleak in session setup
Linus Torvalds [Sat, 6 May 2023 02:12:01 +0000 (19:12 -0700)]
Merge tag 'net-6.4-rc1' of git://git./linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter.
Current release - regressions:
- sched: act_pedit: free pedit keys on bail from offset check
Current release - new code bugs:
- pds_core:
- Kconfig fixes (DEBUGFS and AUXILIARY_BUS)
- fix mutex double unlock in error path
Previous releases - regressions:
- sched: cls_api: remove block_cb from driver_list before freeing
- nf_tables: fix ct untracked match breakage
- eth: mtk_eth_soc: drop generic vlan rx offload
- sched: flower: fix error handler on replace
Previous releases - always broken:
- tcp: fix skb_copy_ubufs() vs BIG TCP
- ipv6: fix skb hash for some RST packets
- af_packet: don't send zero-byte data in packet_sendmsg_spkt()
- rxrpc: timeout handling fixes after moving client call connection
to the I/O thread
- ixgbe: fix panic during XDP_TX with > 64 CPUs
- igc: RMW the SRRCTL register to prevent losing timestamp config
- dsa: mt7530: fix corrupt frames using TRGMII on 40 MHz XTAL MT7621
- r8152:
- fix flow control issue of RTL8156A
- fix the poor throughput for 2.5G devices
- move setting r8153b_rx_agg_chg_indicate() to fix coalescing
- enable autosuspend
- ncsi: clear Tx enable mode when handling a Config required AEN
- octeontx2-pf: macsec: fixes for CN10KB ASIC rev
Misc:
- 9p: remove INET dependency"
* tag 'net-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (69 commits)
net: bcmgenet: Remove phy_stop() from bcmgenet_netif_stop()
pds_core: fix mutex double unlock in error path
net/sched: flower: fix error handler on replace
Revert "net/sched: flower: Fix wrong handle assignment during filter change"
net/sched: flower: fix filter idr initialization
net: fec: correct the counting of XDP sent frames
bonding: add xdp_features support
net: enetc: check the index of the SFI rather than the handle
sfc: Add back mailing list
virtio_net: suppress cpu stall when free_unused_bufs
ice: block LAN in case of VF to VF offload
net: dsa: mt7530: fix network connectivity with multiple CPU ports
net: dsa: mt7530: fix corrupt frames using trgmii on 40 MHz XTAL MT7621
9p: Remove INET dependency
netfilter: nf_tables: fix ct untracked match breakage
af_packet: Don't send zero-byte data in packet_sendmsg_spkt().
igc: read before write to SRRCTL register
pds_core: add AUXILIARY_BUS and NET_DEVLINK to Kconfig
pds_core: remove CONFIG_DEBUG_FS from makefile
ionic: catch failure from devlink_alloc
...
Linus Torvalds [Sat, 6 May 2023 02:07:17 +0000 (19:07 -0700)]
Merge tag 'i2c-for-6.4-rc1-part2' of git://git./linux/kernel/git/wsa/linux
Pull more i2c updates from Wolfram Sang:
"Some more driver bugfixes and a DT binding conversion"
* tag 'i2c-for-6.4-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
dt-bindings: i2c: brcm,kona-i2c: convert to YAML
i2c: gxp: fix build failure without CONFIG_I2C_SLAVE
i2c: imx-lpi2c: avoid taking clk_prepare mutex in PM callbacks
i2c: omap: Fix standard mode false ACK readings
i2c: tegra: Fix PEC support for SMBUS block read
Lukas Bulwahn [Fri, 5 May 2023 22:39:09 +0000 (00:39 +0200)]
s390: remove the unneeded select GCC12_NO_ARRAY_BOUNDS
Commit
0da6e5fd6c37 ("gcc: disable '-Warray-bounds' for gcc-13 too") makes
config GCC11_NO_ARRAY_BOUNDS to be for disabling -Warray-bounds in any gcc
version 11 and upwards, and with that, removes the GCC12_NO_ARRAY_BOUNDS
config as it is now covered by the semantics of GCC11_NO_ARRAY_BOUNDS.
As GCC11_NO_ARRAY_BOUNDS is yes by default, there is no need for the s390
architecture to explicitly select GCC11_NO_ARRAY_BOUNDS. Hence, the select
GCC12_NO_ARRAY_BOUNDS in arch/s390/Kconfig can simply be dropped.
Remove the unneeded "select GCC12_NO_ARRAY_BOUNDS".
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ian Rogers [Fri, 5 May 2023 20:41:19 +0000 (13:41 -0700)]
perf metrics: Fix SEGV with --for-each-cgroup
Ensure the metric threshold is copied correctly or else a use of
uninitialized memory happens.
Fixes:
d0a3052f6faefffc ("perf metric: Compute and print threshold values")
Reported-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230505204119.3443491-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Thu, 4 May 2023 22:03:51 +0000 (19:03 -0300)]
perf bpf skels: Stop using vmlinux.h generated from BTF, use subset of used structs + CO-RE
Linus reported a build break due to using a vmlinux without a BTF elf
section to generate the vmlinux.h header with bpftool for use in the BPF
tools in tools/perf/util/bpf_skel/*.bpf.c.
Instead add a vmlinux.h file with the structs needed with the fields the
tools need, marking the structs with __attribute__((preserve_access_index)),
so that libbpf's CO-RE code can fixup the struct field offsets.
In some cases the vmlinux.h file that was being generated by bpftool
from the kernel BTF information was not needed at all, just including
linux/bpf.h, sometimes linux/perf_event.h was enough as non-UAPI
types were not being used.
To keep te patch small, include those UAPI headers from the trimmed down
vmlinux.h file, that then provides the tools with just the structs and
the subset of its fields needed for them.
Testing it:
# perf lock contention -b find / > /dev/null
^C contended total wait max wait avg wait type caller
7 53.59 us 10.86 us 7.66 us rwlock:R start_this_handle+0xa0
2 30.35 us 21.99 us 15.17 us rwsem:R iterate_dir+0x52
1 9.04 us 9.04 us 9.04 us rwlock:W start_this_handle+0x291
1 8.73 us 8.73 us 8.73 us spinlock raw_spin_rq_lock_nested+0x1e
#
# perf lock contention -abl find / > /dev/null
^C contended total wait max wait avg wait address symbol
1 262.96 ms 262.96 ms 262.96 ms
ffff8e67502d0170 (mutex)
12 244.24 us 39.91 us 20.35 us
ffff8e6af56f8070 mmap_lock (rwsem)
7 30.28 us 6.85 us 4.33 us
ffff8e6c865f1d40 rq_lock (spinlock)
3 7.42 us 4.03 us 2.47 us
ffff8e6c864b1d40 rq_lock (spinlock)
2 3.72 us 2.19 us 1.86 us
ffff8e6c86571d40 rq_lock (spinlock)
1 2.42 us 2.42 us 2.42 us
ffff8e6c86471d40 rq_lock (spinlock)
4 2.11 us 559 ns 527 ns
ffffffff9a146c80 rcu_state (spinlock)
3 1.45 us 818 ns 482 ns
ffff8e674ae8384c (rwlock)
1 870 ns 870 ns 870 ns
ffff8e68456ee060 (rwlock)
1 663 ns 663 ns 663 ns
ffff8e6c864f1d40 rq_lock (spinlock)
1 573 ns 573 ns 573 ns
ffff8e6c86531d40 rq_lock (spinlock)
1 472 ns 472 ns 472 ns
ffff8e6c86431740 (spinlock)
1 397 ns 397 ns 397 ns
ffff8e67413a4f04 (spinlock)
#
# perf test offcpu
95: perf record offcpu profiling tests : Ok
#
# perf kwork latency --use-bpf
Starting trace, Hit <Ctrl+C> to stop and report
^C
Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end |
--------------------------------------------------------------------------------------------------------------------------------
(w)flush_memcg_stats_dwork | 0000 | 1056.212 ms | 2 | 2112.345 ms | 550113.229573 s | 550115.341919 s |
(w)toggle_allocation_gate | 0000 | 10.144 ms | 62 | 416.389 ms | 550113.453518 s | 550113.869907 s |
(w)0xffff8e6748e28080 | 0002 | 0.623 ms | 1 | 0.623 ms | 550110.989841 s | 550110.990464 s |
(w)vmstat_shepherd | 0000 | 0.586 ms | 10 | 2.828 ms | 550111.971536 s | 550111.974364 s |
(w)vmstat_update | 0007 | 0.363 ms | 5 | 1.634 ms | 550113.222520 s | 550113.224154 s |
(w)vmstat_update | 0000 | 0.324 ms | 10 | 2.827 ms | 550111.971526 s | 550111.974354 s |
(w)0xffff8e674c5f4a58 | 0002 | 0.102 ms | 5 | 0.134 ms | 550110.989839 s | 550110.989972 s |
(w)psi_avgs_work | 0001 | 0.086 ms | 3 | 0.107 ms | 550114.957852 s | 550114.957959 s |
(w)psi_avgs_work | 0000 | 0.079 ms | 5 | 0.100 ms | 550118.605668 s | 550118.605768 s |
(w)kfree_rcu_monitor | 0006 | 0.079 ms | 1 | 0.079 ms | 550110.925821 s | 550110.925900 s |
(w)psi_avgs_work | 0004 | 0.079 ms | 1 | 0.079 ms | 550109.581835 s | 550109.581914 s |
(w)psi_avgs_work | 0001 | 0.078 ms | 1 | 0.078 ms | 550109.197809 s | 550109.197887 s |
(w)psi_avgs_work | 0002 | 0.077 ms | 5 | 0.086 ms | 550110.669819 s | 550110.669905 s |
<SNIP>
# strace -e bpf -o perf-stat-bpf-counters.output perf stat -e cycles --bpf-counters sleep 1
Performance counter stats for 'sleep 1':
6,197,983 cycles
1.
003922848 seconds time elapsed
0.
000000000 seconds user
0.
002032000 seconds sys
# head -7 perf-stat-bpf-counters.output
bpf(BPF_OBJ_GET, {pathname="/sys/fs/bpf/perf_attr_map", bpf_fd=0, file_flags=0}, 16) = 3
bpf(BPF_OBJ_GET_INFO_BY_FD, {info={bpf_fd=3, info_len=88, info=0x7ffcead64990}}, 16) = 0
bpf(BPF_MAP_LOOKUP_ELEM, {map_fd=3, key=0x24129e0, value=0x7ffcead65a48, flags=BPF_ANY}, 32) = 0
bpf(BPF_LINK_GET_FD_BY_ID, {link_id=1252}, 12) = -1 ENOENT (No such file or directory)
bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=2, insns=0x7ffcead65780, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0,
+func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0}, 116) = 4
bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=2, insns=0x7ffcead65920, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=0, func_info_rec_size=0,
+func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 128) = 4
bpf(BPF_BTF_LOAD, {btf="\237\353\1\0\30\0\0\0\0\0\0\0\20\0\0\0\20\0\0\0\5\0\0\0\1\0\0\0\0\0\0\1"..., btf_log_buf=NULL, btf_size=45, btf_log_size=0, btf_log_level=0}, 28) = 4
#
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Suggested-by: Andrii Nakryiko <andrii@kernel.org>
Tested-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Song Liu <song@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Co-developed-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/lkml/ZFU1PJrn8YtHIqno@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jakub Kicinski [Fri, 5 May 2023 20:35:45 +0000 (13:35 -0700)]
Merge git://git./linux/kernel/git/netdev/net-next
There's a fix which landed in net-next, pull it in along
with the couple of minor cleanups.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Dmitrii Dolgov [Wed, 12 Apr 2023 18:23:16 +0000 (20:23 +0200)]
perf stat: Separate bperf from bpf_profiler
It seems that perf stat -b <prog id> doesn't produce any results:
$ perf stat -e cycles -b 4 -I 10000 -vvv
Control descriptor is not initialized
cycles: 0 0 0
time counts unit events
10.
007641640 <not supported> cycles
Looks like this happens because fentry/fexit progs are getting loaded, but the
corresponding perf event is not enabled and not added into the events bpf map.
I think there is some mixing up between two type of bpf support, one for bperf
and one for bpf_profiler. Both are identified via evsel__is_bpf, based on which
perf events are enabled, but for the latter (bpf_profiler) a perf event is
required. Using evsel__is_bperf to check only bperf produces expected results:
$ perf stat -e cycles -b 4 -I 10000 -vvv
Control descriptor is not initialized
------------------------------------------------------------
perf_event_attr:
size 136
sample_type IDENTIFIER
read_format TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING
disabled 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 3
------------------------------------------------------------
[...perf_event_attr for other CPUs...]
------------------------------------------------------------
cycles: 309426 169009 169009
time counts unit events
10.
010091271 309426 cycles
The final numbers correspond (at least in the level of magnitude) to the
same metric obtained via bpftool.
Fixes:
112cb56164bc2108 ("perf stat: Introduce config stat.bpf-counter-events")
Reviewed-by: Song Liu <song@kernel.org>
Signed-off-by: Dmitrii Dolgov <9erthalion6@gmail.com>
Tested-by: Song Liu <song@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230412182316.11628-1-9erthalion6@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linus Torvalds [Fri, 5 May 2023 20:27:59 +0000 (13:27 -0700)]
Merge tag 'devicetree-fixes-for-6.4-1' of git://git./linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Add Conor Dooley as a DT binding maintainer
- Swap the order of parsing /memreserve/ and /reserved-memory nodes so
that the /reserved-memory nodes which have more information are
handled first
- Fix some property dependencies in riscv,pmu binding
- Update maintainers entries on a couple of bindings
* tag 'devicetree-fixes-for-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
MAINTAINERS: add Conor as a dt-bindings maintainer
dt-bindings: perf: riscv,pmu: fix property dependencies
dt-bindings: xilinx: Remove Naga from memory and mtd bindings
of: fdt: Scan /memreserve/ last
dt-bindings: clock: r9a06g032-sysctrl: Change maintainer to Fabrizio Castro
dt-bindings: pinctrl: renesas,rzv2m: Change maintainer to Fabrizio Castro
dt-bindings: pinctrl: renesas,rzn1: Change maintainer to Fabrizio Castro
dt-bindings: i2c: renesas,rzv2m: Change maintainer to Fabrizio Castro
Linus Torvalds [Fri, 5 May 2023 20:16:42 +0000 (13:16 -0700)]
Merge tag 'docs-6.4-2' of git://git.lwn.net/linux
Pull more documentation updates from Jonathan Corbet:
"A handful of late-arriving documentation fixes, plus one Spanish
translation that has been ready for some time but got applied late"
* tag 'docs-6.4-2' of git://git.lwn.net/linux:
docs/sp_SP: Add translation of process/adding-syscalls
CREDITS: Update email address for Mat Martineau
Documentation: update kernel stack for x86_64
docs: Remove unnecessary unicode character
docs: fix "Reviewd" typo
Documentation: timers: hrtimers: Make hybrid union historical
docs/admin-guide/mm/ksm.rst fix intraface -> interface typo
doc:it_IT: fix some typos