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#!/bin/bash

# http://www.nongnu.org/avr-libc/user-manual/install_tools.html

# For optimum compile time this should generally be set to the number of CPU cores your machine has
JOBCOUNT=4

# Build Linux toolchain
# A Linux AVR-GCC toolchain is required to build a Windows toolchain
# If the Linux toolchain has already been built then you can set this to 0

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The instructions were tested on a Lenovo X1 Carbon 5th Gen (X1C5) on Arch Linux but should be applicable to other Lenovo models and Linux distributions.

BACKUP YOUR DATA! I created a bootable Ubuntu Image like this:

$ sudo sh -c 'curl --location --silent --fail "http://releases.ubuntu.com/18.04/ubuntu-18.04.1-desktop-amd64.iso" | pv > /dev/<your-usb-drive>'
# note that pv is only there to show progress, it is perfectly fine to redirect curl to the usb drive directly.

then I booted from this drive by pressing F12 on reboot and dumped my NVMe disk to an external hard drive like this:

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# Re: [Bug 172981] New: [bisected] SLAB: extreme load averages and over 2000 kworker threads
# Joonsoo Kim
# http://www.spinics.net/lists/linux-mm/msg114252.html

# Usage
# cd linux-X.X.X
# patch -p1 < this.patch

diff --git a/mm/slab.c b/mm/slab.c
index cc8bbc1..be4c7fa 100644

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diff --git a/Makefile b/Makefile
index b249529..ae6fa4b 100644
--- a/Makefile
+++ b/Makefile
@@ -399,9 +399,9 @@ KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
 		   -fno-strict-aliasing -fno-common \
 		   -Werror-implicit-function-declaration \
 		   -Wno-format-security \
-		   -std=gnu89
+		   -std=gnu89 -fno-PIE

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事前準備

• pycairoとpygobjectを構築する為に必要な開発パッケージをインストールする
• pyenvでインストール先のPythonバージョンを指定する

pyenv shell 3.4.2

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/*
 *  V4L2 video capture example
 *
 *  This program can be used and distributed without restrictions.
 *
 *      This program is provided with the V4L2 API
 * see http://linuxtv.org/docs.php for more information
 */

#include <stdio.h>