[bootlin/training-materials updates] master: Add diagram for the absence of kernel binary compatibility (99fef130)
Michael Opdenacker
michael.opdenacker at bootlin.com
Wed Mar 20 06:24:59 CET 2019
Repository : https://github.com/bootlin/training-materials
On branch : master
Link : https://github.com/bootlin/training-materials/commit/99fef13067d51ba828a67419fed9321a8325533d
>---------------------------------------------------------------
commit 99fef13067d51ba828a67419fed9321a8325533d
Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
Date: Tue Mar 19 15:41:49 2019 +0100
Add diagram for the absence of kernel binary compatibility
Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>
>---------------------------------------------------------------
99fef13067d51ba828a67419fed9321a8325533d
.../kernel-source-code-drivers.tex | 35 +-
.../no-stable-kernel-abi.svg | 799 +++++++++++++++++++++
2 files changed, 821 insertions(+), 13 deletions(-)
diff --git a/slides/kernel-source-code-drivers/kernel-source-code-drivers.tex b/slides/kernel-source-code-drivers/kernel-source-code-drivers.tex
index ddb885f0..46a64d42 100644
--- a/slides/kernel-source-code-drivers/kernel-source-code-drivers.tex
+++ b/slides/kernel-source-code-drivers/kernel-source-code-drivers.tex
@@ -82,19 +82,28 @@
\begin{frame}
\frametitle{No stable Linux internal API}
- \begin{itemize}
- \item The internal kernel API to implement kernel code can undergo
- changes between two releases.
- \item In-tree drivers are updated by the developer proposing the API
- change: works great for mainline code.
- \item An out-of-tree driver compiled for a given version may no
- longer compile or work on a more recent one.
- \item See \kerneldochtml{process/stable-api-nonsense} in kernel sources for
- reasons why.
- \item Of course, the kernel to user space API does not change (system
- calls, \code{/proc}, \code{/sys}), as it would break existing
- programs.
- \end{itemize}
+ \begin{columns}
+ \column{0.7\textwidth}
+ \begin{itemize}
+ \item The internal kernel API to implement kernel code can undergo
+ changes between two releases.
+ \item In-tree drivers are updated by the developer proposing the API
+ change: works great for mainline code.
+ \item An out-of-tree driver compiled for a given version may no
+ longer compile or work on a more recent one.
+ \item See \kerneldochtml{process/stable-api-nonsense} in kernel sources for
+ reasons why.
+ \item Of course, the kernel to user space API does not change (system
+ calls, \code{/proc}, \code{/sys}), as it would break existing
+ programs.
+ \end{itemize}
+ \column{0.3\textwidth}
+ \includegraphics[width=\textwidth]{slides/kernel-source-code-drivers/no-stable-kernel-abi.pdf}
+ \scriptsize
+ \vfill
+ Image credits (Wikipedia):\\
+ \url{https://bit.ly/2U2rdGB}
+ \end{columns}
\end{frame}
\begin{frame}
diff --git a/slides/kernel-source-code-drivers/no-stable-kernel-abi.svg b/slides/kernel-source-code-drivers/no-stable-kernel-abi.svg
new file mode 100644
index 00000000..57fedb68
--- /dev/null
+++ b/slides/kernel-source-code-drivers/no-stable-kernel-abi.svg
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+ </dc:rights>
+ <dc:language>en-US</dc:language>
+ <dc:subject>
+ <rdf:Bag>
+ <rdf:li>Linux kernel</rdf:li>
+ <rdf:li>GNU C Library</rdf:li>
+ <rdf:li>System Call Interface</rdf:li>
+ <rdf:li>POSIX</rdf:li>
+ <rdf:li>source code portability</rdf:li>
+ <rdf:li>Linux system calls</rdf:li>
+ <rdf:li>System Call Interface (SCI)</rdf:li>
+ <rdf:li>GNU C Library (glibc)</rdf:li>
+ <rdf:li>Linux Standard Base (LSB)</rdf:li>
+ </rdf:Bag>
+ </dc:subject>
+ <dc:description>Illustrates the interfaces of the Linux kernel, GNU C Library and POSIX-compatible as well as Linux-only applications</dc:description>
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