slides: common/gdb: add minicoredumper

Also, in the slide about core dumps, mention the core dump is an ELF file, which helps understanding how minicoredumpre can work. Signed-off-by: Luca Ceresoli <[email protected]>
bootlin · Dec 15, 2023 · 31137cd · 31137cd
1 parent 650de6b
commit 31137cd
Showing 1 changed file with 32 additions and 2 deletions.
diff --git a/common/gdb.tex b/common/gdb.tex
@@ -203,8 +203,8 @@ \subsection{Remote debugging}
     information about the crash
   \item Fortunately, Linux can generate a \code{core} file that
     contains the image of the application memory at the moment of the
-    crash, and gdb can use this \code{core} file to let us analyze the
-    state of the crashed application
+    crash in the ELF format. gdb can use this \code{core} file to let
+    us analyze the state of the crashed application
   \item On the target
     \begin{itemize}
     \item Use \code{ulimit -c unlimited} in the shell starting the
@@ -222,3 +222,33 @@ \subsection{Remote debugging}
     \end{itemize}
   \end{itemize}
 \end{frame}
+
+\begin{frame}
+  \frametitle{minicoredumper}
+  \begin{itemize}
+  \item Coredumps can be huge for complex applications
+  \item minicoredumper is a userspace tool based on the standard core dump
+    feature
+    \begin{itemize}
+    \item Based on the possibility to redirect the core dump output to a
+      user space program via a pipe
+    \end{itemize}
+  \item Based on a JSON configuration file, it can:
+    \begin{itemize}
+    \item save only the relevant sections (stack, heap, selected ELF
+      sections)
+    \item compress the output file
+    \item save additional information from \code{/proc}
+    \end{itemize}
+  \item \url{https://github.com/diamon/minicoredumper}
+  \item ``Efficient and Practical Capturing of Crash Data on Embedded
+    Systems''
+    \begin{itemize}
+      \item Presentation by minicoredumper author John Ogness
+      \item Video: \url{https://www.youtube.com/watch?v=q2zmwrgLJGs}
+      \item Slides:
+        \href{https://elinux.org/images/8/81/Eoss2023_ogness_minicoredumper.pdf}
+             {elinux.org/images/8/81/Eoss2023\_ogness\_minicoredumper.pdf}
+    \end{itemize}
+  \end{itemize}
+\end{frame}