[bootlin/training-materials updates] master: Kernel slides: minor improvements (f9360b63)

[Michael Opdenacker]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/f9360b63dfd1f2d48a0475af76c0c6704e9374fc

>---------------------------------------------------------------

commit f9360b63dfd1f2d48a0475af76c0c6704e9374fc
Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
Date:   Wed Apr 21 11:50:04 2021 +0200

    Kernel slides: minor improvements
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>


>---------------------------------------------------------------

f9360b63dfd1f2d48a0475af76c0c6704e9374fc
 slides/kernel-source-code-drivers/kernel-source-code-drivers.tex   | 5 +++--
 slides/sysdev-linux-intro-features/sysdev-linux-intro-features.tex | 4 ++--
 2 files changed, 5 insertions(+), 4 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 f2072920..1c807e4f 100644
--- a/slides/kernel-source-code-drivers/kernel-source-code-drivers.tex
+++ b/slides/kernel-source-code-drivers/kernel-source-code-drivers.tex
@@ -34,7 +34,7 @@
     phase, before it has accessed a root filesystem.
   \item Hence, kernel code has to supply its own library implementations
     (string utilities, cryptography, uncompression...)
-  \item So, you can't use standard C library functions in kernel code.
+  \item So, you can't use standard C library functions in kernel code
     (\code{printf()}, \code{memset()}, \code{malloc()},...).
   \item Fortunately, the kernel provides similar C functions for your
     convenience, like \kfunc{printk}, \kfunc{memset},
@@ -99,7 +99,8 @@
     memory locations. It just dumps {\em oops} messages on the system console.
   \item Fixed size stack (8 or 4 KB). Unlike in user space, no mechanism
     was implemented to make it grow. Don't use recursion!
-  \item Swapping is not implemented for kernel memory either.
+  \item Swapping is not implemented for kernel memory either\\
+    (Exception: {\em tmpfs} filesystem pages)
   \end{itemize}
 \end{frame}
 
diff --git a/slides/sysdev-linux-intro-features/sysdev-linux-intro-features.tex b/slides/sysdev-linux-intro-features/sysdev-linux-intro-features.tex
index a66afa54..f5042d58 100644
--- a/slides/sysdev-linux-intro-features/sysdev-linux-intro-features.tex
+++ b/slides/sysdev-linux-intro-features/sysdev-linux-intro-features.tex
@@ -34,8 +34,8 @@
   \begin{columns}
     \column{0.5\textwidth}
     \begin{itemize}
-    \item Portability and hardware support. Runs on most
-      architectures.
+    \item Portability and hardware support. Runs on most architectures\\
+      (see \kdir{arch} in the source code).
     \item Scalability. Can run on super computers as well as on tiny
       devices (4 MB of RAM is enough).
     \item Compliance to standards and interoperability.