--- /dev/null
+\documentclass{beamer}
+
+%%%%%%%%%%%%%%%%%%%
+% Commands/macros %
+%%%%%%%%%%%%%%%%%%%
+\newcommand{\link}[1]{
+ \begin{flushright}
+ \scriptsize{#1}
+ \end{flushright}
+}
+
+\newcommand{\hdrs}[1]{\large{\textit{\insertsection}}\\\Large{\textbf{#1}}}
+\newcommand{\hdrss}[1]{\large{\textit{\insertsubsection}}\\\large{\textbf{#1}}}
+
+%%%%%%%%%%%%%%%%
+% Header/theme %
+%%%%%%%%%%%%%%%%
+%\usetheme[
+% pageofpages=of,
+% alternativetitlepage=true,
+%]{Torino}
+%\setbeamertemplate{footline}{}
+\setbeamersize{text margin left=10mm}
+\setbeamersize{text margin right=5mm}
+
+% Import packages
+\usepackage[english]{babel}
+\usepackage[latin1]{inputenc}
+\usepackage{times}
+\usepackage[T1]{fontenc}
+\usepackage{graphics}
+\usepackage{hyperref}
+\usepackage{ulem}
+\usepackage{color}
+\usepackage{listings}
+\usepackage{xcolor}
+
+% Diff syntax
+\definecolor{diffcommit}{rgb}{.50, .50, .00}
+\definecolor{diffauthor}{rgb}{.50, .50, .00}
+\definecolor{diffdate} {rgb}{.50, .50, .00}
+\definecolor{diffdiff} {rgb}{.30, .30, .90}
+\definecolor{diffindex} {rgb}{.50, .00, .50}
+\definecolor{diffstart} {rgb}{.00, .50, .50}
+\definecolor{diffadd} {rgb}{.00, .60, .00}
+\definecolor{diffdel} {rgb}{.80, .00, .00}
+
+\lstdefinelanguage{diff}{
+ basicstyle=\ttfamily\small,
+ morecomment=[f][\color{diffcommit}]{commit},
+ morecomment=[f][\color{diffauthor}]{Author},
+ morecomment=[f][\color{diffdate}]{Date},
+ morecomment=[f][\color{diffdiff}]{diff},
+ morecomment=[f][\color{diffindex}]{index},
+ morecomment=[f][\color{diffstart}]{@@},
+ morecomment=[f][\color{diffadd}]{+},
+ morecomment=[f][\color{diffdel}]{-},
+ morecomment=[f][\color{diffindex}]{+++},
+ morecomment=[f][\color{diffindex}]{---},
+}
+
+\lstset{language=diff,
+ basicstyle=\ttfamily,
+ keywordstyle=\color{blue}\ttfamily,
+ stringstyle=\color{red}\ttfamily,
+ commentstyle=\color{green}\ttfamily,
+ morecomment=[l][\color{magenta}]{\#} }
+
+%%%%%%%%%%%%%%%%%%%%
+% Title page setup %
+%%%%%%%%%%%%%%%%%%%%
+\subject{%
+ kernel,
+ programming
+}
+
+\keywords{%
+ linux,
+ kernel
+}
+
+\title[Kernel Programming]{%
+ Introduction to Linux Kernel Programming
+}
+
+\author[Spencer]{%
+ Andy Spencer
+}
+
+\date[2020-01-04]{%
+ Jan. 4, 2020 \\
+ \small{San Fernando Valley Linux Users Group}
+}
+
+%%%%%%%%%%%%%%%%%
+% Content pages %
+%%%%%%%%%%%%%%%%%
+% Structure:
+% - Examples
+% - The typo fix
+% - The hardware id
+% - The driver debug
+% - The new driver
+% - The new protocol
+% - The new board
+% - Development
+% - Kernel compiling
+% - Booting the kernel
+% - Kernel source tree
+% - Sending patches
+% - Kernel modules
+% - Hello, World
+% - User Interfaces
+% - printk / dmesg
+% - /dev, proc, sysfs
+% - syscalls, ioctls
+% - Devices and Drivers
+\begin{document}
+
+%%%%%%%%%%%%%%%%
+% Introduction %
+%%%%%%%%%%%%%%%%
+\begin{frame}[plain]
+ \titlepage
+\end{frame}
+
+% Examples
+% - The typo fix
+% - The hardware id
+% - The driver debug
+% - The new driver
+% - The new protocol
+% - The new board
+
+\section{Examples Patches}
+
+\begin{frame}[fragile]{\hdrs{The Typo Fix}}
+ \begin{lstlisting}[language=diff,basicstyle=\tiny]
+commit 9eac0ae1683575375de8c63166b3596b11d3b56a
+Author: Krzysztof Kozlowski <krzk@kernel.org>
+Date: 2019-01-08 13:11:40 +0100
+
+ dt-bindings: soc: qcom: Fix trivial language typos
+
+ Fix few trivial language typos in bindings.
+
+ Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
+ Signed-off-by: Rob Herring <robh@kernel.org>
+
+diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt b/Docume...
+index 0b8cc533ca83..cf759e5f9b10 100644
+--- a/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt
++++ b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt
+@@ -55,7 +55,7 @@ of these nodes are defined by the individual bindings for the...
+ = EXAMPLE
+ The following example represents the GLINK RPM node on a MSM8996 device, with
+ the function for the "rpm_request" channel defined, which is used for
+-regualtors and root clocks.
++regulators and root clocks.
+
+ apcs_glb: mailbox@9820000 {
+ compatible = "qcom,msm8996-apcs-hmss-global";
+ \end{lstlisting}
+\end{frame}
+
+\begin{frame}[fragile]{\hdrs{The Hardware ID}}
+ \begin{lstlisting}[language=diff,basicstyle=\tiny]
+commit 7ab21a8692094872298df172f54d55cba72fd308
+Author: Andy Spencer <spenceal@rose-hulman.edu>
+Date: 2009-01-02 16:19:13 +0000
+
+ i8k: Enable i8k on Dell Precision Systems
+
+ Patch to enable i8k on Dell Precisions.
+
+ Signed-off-by: Andy Spencer <spenceal@rose-hulman.edu>
+ Signed-off-by: Alan Cox <alan@redhat.com>
+ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+
+diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
+index b60d425ce8d1..099fc89a5bdd 100644
+--- a/drivers/char/i8k.c
++++ b/drivers/char/i8k.c
+@@ -485,6 +485,13 @@ static struct dmi_system_id __initdata i8k_dmi_table[] = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "MP061"),
+ },
+ },
++ {
++ .ident = "Dell Precision",
++ .matches = {
++ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
++ DMI_MATCH(DMI_PRODUCT_NAME, "Precision"),
++ },
++ },
+ { }
+ };
+ \end{lstlisting}
+\end{frame}
+
+\begin{frame}[fragile]{\hdrs{The Driver Debug}}
+ \begin{lstlisting}[language=diff,basicstyle=\tiny]
+commit ab1796ebdad3017965754d86db64d3cba5c416b9
+Author: Andy Spencer <andy753421@ucla.edu>
+Date: 2014-05-02 06:48:13 +0000
+
+ RTL8192CU: Increase max APFM_ONMAC polling count
+
+ With certain hardware combinations the poll interval is exceeded before
+ initialization completes.
+
+ Tested on a MacBookPro10,1 using a Sabrent USB-A11N USB adapter.
+
+ Signed-off-by: Andy Spencer <andy753421@ucla.edu>
+ Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
+ Signed-off-by: John W. Linville <linville@tuxdriver.com>
+
+diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c b/drivers/net/wireless/rtlw...
+index 68b5c7e92cfb..31b79e78c63c 100644
+--- a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
++++ b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
+@@ -511,7 +511,7 @@ static int _rtl92cu_init_power_on(struct ieee80211_hw *hw)
+ pr_info("MAC auto ON okay!\n");
+ break;
+ }
+- if (pollingCount++ > 100) {
++ if (pollingCount++ > 1000) {
+ RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
+ "Failed to polling REG_APS_FSMCO[APFM_ONMAC] done!\n");
+ return -ENODEV;
+ \end{lstlisting}
+\end{frame}
+
+\begin{frame}[fragile]{\hdrs{The New Protocol}}
+ \begin{itemize}
+ \item New network protocols, filesystems, security modules, etc.
+ \item Software only improvmenets to the kernel.
+ \item No hardware required, can be tested in a VM.
+ \item Typocally done in net/, fs/, security/, etc.
+ \end{itemize}
+\end{frame}
+
+\begin{frame}[fragile]{\hdrs{The New Driver}}
+ \begin{itemize}
+ \item Add support for a new hardware device.
+ \item Cononical example: I2C/SPI thermal sensors. (lm70.c)
+ \item Find the data sheet
+ \item Typocally use an existing driver as an example.
+ \item Requires hardware to test on.
+ \item Typocally done in drivers/.
+ \end{itemize}
+\end{frame}
+
+\begin{frame}[fragile]{\hdrs{The New Board}}
+ \begin{itemize}
+ \item Simmilar new drivers but focuse on boot.
+ \item Typocally for embedded Linux.
+ \item May require bootloader changes.
+ \item Typocally done in arch/.
+ \end{itemize}
+\end{frame}
+
+% Development
+% - Kernel compiling
+% - Booting the kernel
+% - Kernel source tree
+% - Sending patches
+
+\section{Development}
+
+\begin{frame}{\hdrs{Kernel compiling}}
+ Could be an entire talk on it's own...
+
+ \begin{itemize}
+ \item \$ make menuconfig
+ \item \$ make -j32
+ \item \$ make install
+ \begin{itemize}
+ \item invokes \$HOME/bin/installkernel
+ \end{itemize}
+ \item \$ make modules\_install
+ \end{itemize}
+
+ Output files:
+ \begin{itemize}
+ \item vmlinux: Main build output, ELF file with debug symbols.
+ \item bzImage: Bootable kernel image (wraps vmlinux).
+ \item uImage, etc: Like bzImage for other architctures.
+ \end{itemize}
+
+\end{frame}
+
+\begin{frame}{\hdrs{Booting the kernel}}
+ How to test?
+
+ \begin{enumerate}
+ \item Compile, reboot, compile, reboot..
+ \begin{itemize}
+ \item Least efficient, but often needed for debugging.
+ \end{itemize}
+ \item Run the kenrel it in a VM.
+ \begin{itemize}
+ \item Great for experimenting.
+ \item Won't work for for driver.
+ \end{itemize}
+ \item Dynamic kernel module loading.
+ \begin{itemize}
+ \item Good for most driver work.
+ \item Easy to crash your PC.
+ \end{itemize}
+ \item Boot it on a dedicated machine.
+ \begin{itemize}
+ \item Generally used for embedded Linux.
+ \item Prevents crashing your workstation.
+ \end{itemize}
+ \end{enumerate}
+\end{frame}
+
+\begin{frame}{\hdrs{Kernel source tree}}
+ \begin{itemize}
+ \item arch/: architecture specific code
+ \item drivers/: well... drivers
+ \item fs/: file systems
+ \item kernel/: core kernel code (process management, etc)
+ \item lib/: utility code, C library type stuff
+ \item mm/: memroy management
+ \item include/: shared include files
+ \end{itemize}
+\end{frame}
+
+\begin{frame}{\hdrs{Sending patches}}
+ \url{https://www.kernel.org/doc/html/latest/process/submitting-patches.html}
+ \begin{itemize}
+ \item Linux uses mailing lists patches and code review.
+ \item Maintainers tend to use pull requests and merges, but general
+ contributors usually do not.
+ \item Different subsystem (netdev) have slightly different rules.
+ \item Patchwork is useful for tracking and reviewing patches:
+ \url{https://patchwork.kernel.org}
+ \end{itemize}
+\end{frame}
+
+% Kernel modules
+% - Hello, World
+% - User Interfaces
+% - printk / dmesg
+% - /dev, proc, sysfs
+% - syscalls, ioctls
+% - Devices and Drivers
+
+\section{Kernel Modules}
+
+\begin{frame}[fragile]{\hdrs{Hello, World}}
+ \begin{lstlisting}[language=C,basicstyle=\scriptsize]
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+static int __init hello_init(void)
+{
+ pr_info("Hello SFVLUG.\n");
+ return 0;
+}
+
+static void __exit hello_exit(void)
+{
+ pr_info("Goodbye SFVLUG.\n");
+}
+
+module_init(hello_init);
+module_exit(hello_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Andy Spencer <andy753421@gmail.com>");
+MODULE_DESCRIPTION("SFVLUG!");
+ \end{lstlisting}
+\end{frame}
+
+%\begin{frame}[fragile]{\hdrs{Makefile / Kconfig}}
+% \begin{lstlisting}[Building it]
+% \end{lstlisting}
+%\end{frame}
+%
+%\begin{frame}{\hdrs{User Interfaces}}
+%- printk / dmesg
+%- /dev, proc, sysfs
+%- syscalls, ioctls
+%\end{frame}
+%
+%\begin{frame}{\hdrs{Devices and Drivers}}
+%\end{frame}
+
+\end{document}
projects / ~andy / sfvlug / commitdiff