Dr. Matthew Swabey 4026365270 linux: Lock Memory and Increase Priority (#6131) ...

Realtime programming best practice is to lock realtime code
memory to prevent paging which will lead to unbounded latencies. The
Linux MCU process has well bounded memory and small RAM footprint
so locking the entire process' RAM has no downsides and will improve
behavior when the system comes under memory pressure.
(See bootlin training and Linux Foundation documentation linked below.)
RT process priority ranges from 0-99 (although POSIX only requires 32),
boost MCU process priority to half the max/2 to improve robustness when
the system comes under pressure from other RT Kernel or user processes.

Reference links:
bootlin: https://bootlin.com/doc/training/preempt-rt/preempt-rt-slides.pdf
Linux Foundation: https://wiki.linuxfoundation.org/realtime/documentation/howto/applications/application_base#howto_build_a_simple_rt_application

Signed-off-by: Matthew Swabey <matthew@swabey.org>

2023-03-27 21:34:24 -04:00

..

ar100

ar100: Support for ar100 (#6054)

2023-02-20 20:15:01 -05:00

atsam

usb_cdc: Only call bootloader_request() if CONFIG_HAVE_BOOTLOADER_REQUEST

2022-12-30 21:28:32 -05:00

atsamd

usb_cdc: Only call bootloader_request() if CONFIG_HAVE_BOOTLOADER_REQUEST

2022-12-30 21:28:32 -05:00

avr

avr: Allow I2C bus speed to be set by Klipper (#6111)

2023-03-21 15:02:58 -04:00

generic

canserial: Only call bootloader_request() if CONFIG_HAVE_BOOTLOADER_REQUEST

2022-12-30 21:28:32 -05:00

hc32f460

hc32f460: Add support for hc32f460 micro-controllers

2023-02-13 12:12:27 -05:00

linux

linux: Lock Memory and Increase Priority (#6131)

2023-03-27 21:34:24 -04:00

lpc176x

serial_irq: Rename SERIAL_BOOTLOADER_SIDECHANNEL to HAVE_BOOTLOADER_REQUEST

2022-12-30 21:28:32 -05:00

pru

misc: Import misc.h in all files defining console_sendf()

2022-05-13 11:22:47 -04:00

rp2040

usb_cdc: Only call bootloader_request() if CONFIG_HAVE_BOOTLOADER_REQUEST

2022-12-30 21:28:32 -05:00

simulator

command: Fix handling of buffer passing in args[] on 64bit mcu

2020-10-30 14:04:12 -04:00

stm32

stm32: Enable I2C on stm32h7 (#6130)

2023-03-27 21:32:42 -04:00

adccmds.c

adccmds: Run gpio_adc_setup() before oid_alloc()

2019-01-13 11:03:30 -05:00

basecmd.c

mcu: Make a minor change to the protocol to require mcu update

2021-11-06 18:47:44 -04:00

basecmd.h

stepper: Use a reusable interface to the "move queue"

2020-12-04 16:10:13 -05:00

buttons.c

buttons: initialize mcu buttons based on inverted state

2019-07-05 20:01:07 -04:00

byteorder.h

byteorder: Add a header file defining common byteswap functions

2018-05-21 09:44:40 -04:00

command.c

command: Make command_add_frame() and command_encodef() static

2021-10-21 01:25:17 -04:00

command.h

command: Make command_add_frame() and command_encodef() static

2021-10-21 01:25:17 -04:00

compiler.h

compiler.h: Check if __aligned and __section macros are already defined

2016-06-13 23:18:59 -04:00

ctr.h

ctr: Encode negative integers in normal hex notation

2019-08-22 13:06:44 -04:00

debugcmds.c

debugcmds: Remove start/end_group commands

2021-05-07 13:53:47 -04:00

endstop.c

trsync: Introduce new "trigger synchronization" support

2021-06-09 18:58:35 -04:00

gpiocmds.c

gpiocmds: Merge digital output and soft pwm code

2020-12-10 12:06:26 -05:00

i2ccmds.c

mpu9250: Adding support for MPU-9250 (and MPU-6050) accelerometer

2022-06-16 11:09:33 -04:00

i2ccmds.h

mpu9250: Adding support for MPU-9250 (and MPU-6050) accelerometer

2022-06-16 11:09:33 -04:00

initial_pins.c

initial_pins: Add check to reduce compile time size when not in use

2022-12-16 22:46:47 -05:00

initial_pins.h

initial_pins: Add ability to configure output pins at mcu startup

2019-03-17 20:56:25 -04:00

Kconfig

ar100: Support for ar100 (#6054)

2023-02-20 20:15:01 -05:00

lcd_hd44780.c

lcd_st7920: Check CONFIG_MACH_AVR for slow mcus

2021-07-04 10:11:02 -04:00

lcd_st7920.c

lcd_st7920: Check CONFIG_MACH_AVR for slow mcus

2021-07-04 10:11:02 -04:00

Makefile

stm32: Add sdio support

2023-02-20 19:55:25 -05:00

neopixel.c

neopixel: Fix neopixel_result message so that it contains an oid

2020-11-05 11:40:34 -05:00

pulse_counter.c

pulse_counter: Use "clock" suffix instead of "time" in commands

2021-04-30 11:40:37 -04:00

pwmcmds.c

pwmcmds: Use move queue for hard PWM

2020-12-04 16:10:13 -05:00

sched.c

sched: Move last_insert check for improved gcc code layout

2021-11-09 20:20:24 -05:00

sched.h

pru: Support config_reset command to manually reset mcu

2017-09-03 23:16:38 -04:00

sdiocmds.c

stm32: Add sdio support

2023-02-20 19:55:25 -05:00

sdiocmds.h

stm32: Add sdio support

2023-02-20 19:55:25 -05:00

sensor_adxl345.c

adxl345: Compress each sample from 6 bytes to 5 bytes

2021-08-30 12:25:50 -04:00

sensor_angle.c

sensor_angle: Support TLE5012b frame counter for timing

2022-03-29 20:34:46 -04:00

sensor_mpu9250.c

mpu9250: Adding support for MPU-9250 (and MPU-6050) accelerometer

2022-06-16 11:09:33 -04:00

spi_software.c

spi_software: Remove unused include file

2019-08-17 13:49:03 -04:00

spi_software.h

spi_software: Implementation of software spi

2019-02-13 11:52:20 -05:00

spicmds.c

spicmds: Allow inversion of CS pin for SPI busses

2022-04-22 13:25:03 -04:00

spicmds.h

sensor_angle: Add support for bulk querying of spi angle sensors

2022-03-29 20:34:46 -04:00

stepper.c

stepper: Move min_next_time check to stepper_event_full()

2021-11-04 12:06:27 -04:00

stepper.h

trsync: Introduce new "trigger synchronization" support

2021-06-09 18:58:35 -04:00

thermocouple.c

thermocouple: Only shutdown on multiple consecutive sensor errors

2022-09-23 11:56:20 -04:00

tmcuart.c

command: Add command_decode_ptr() helper

2020-10-30 14:04:08 -04:00

trsync.c

trsync: Introduce new "trigger synchronization" support

2021-06-09 18:58:35 -04:00

trsync.h

trsync: Introduce new "trigger synchronization" support

2021-06-09 18:58:35 -04:00