[bootlin/training-materials updates] master: debugging: slides: add small comment on uprobe internals (e0db4475)

[Clément Léger]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/e0db44757db8047e2b21bca8b7ba12809d992e7e

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

commit e0db44757db8047e2b21bca8b7ba12809d992e7e
Author: Clément Léger <clement.leger at bootlin.com>
Date:   Thu Nov 17 16:17:40 2022 +0100

    debugging: slides: add small comment on uprobe internals
    
    Signed-off-by: Clément Léger <clement.leger at bootlin.com>


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

e0db44757db8047e2b21bca8b7ba12809d992e7e
 .../debugging-application-tracing/debugging-application-tracing.tex | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/slides/debugging-application-tracing/debugging-application-tracing.tex b/slides/debugging-application-tracing/debugging-application-tracing.tex
index 192e7e90..3cfa09be 100644
--- a/slides/debugging-application-tracing/debugging-application-tracing.tex
+++ b/slides/debugging-application-tracing/debugging-application-tracing.tex
@@ -61,7 +61,11 @@ $ LD_PRELOAD=my_lib.so ./exe
     \item {\em uprobe} is a mechanism offered by the kernel allowing to trace
           userspace code.
     \item Tracepoints can be added dynamically on any userspace symbol
-    \item Exposed in file \code{/sys/kernel/debug/tracing/uprobe_events}
+    \begin{itemize}
+      \item Internally patches the text section with breakpoint that is handled
+        by the kernel trace system
+    \end{itemize}
+    \item Exposed by file \code{/sys/kernel/debug/tracing/uprobe_events}
     \item Often wrapped up by other tools (\code{perf}, \code{bcc} for
           instance).
     \item \kdochtml{trace/uprobetracer}