[FE training-materials-updates] Magic SysRq: explicit on Picocom
Michael Opdenacker
michael.opdenacker at free-electrons.com
Fri Dec 16 08:51:24 CET 2016
Repository : git://git.free-electrons.com/training-materials.git
On branch : master
Link : http://git.free-electrons.com/training-materials/commit/?id=4eeabeffaa0afccfc9ea2e2b22f92d3acdc5ee3f
>---------------------------------------------------------------
commit 4eeabeffaa0afccfc9ea2e2b22f92d3acdc5ee3f
Author: Michael Opdenacker <michael.opdenacker at free-electrons.com>
Date: Fri Dec 16 08:51:24 2016 +0100
Magic SysRq: explicit on Picocom
Signed-off-by: Michael Opdenacker <michael.opdenacker at free-electrons.com>
>---------------------------------------------------------------
4eeabeffaa0afccfc9ea2e2b22f92d3acdc5ee3f
.../kernel-driver-development-debugging.tex | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/slides/kernel-driver-development-debugging/kernel-driver-development-debugging.tex b/slides/kernel-driver-development-debugging/kernel-driver-development-debugging.tex
index 3a5066b..4186539 100644
--- a/slides/kernel-driver-development-debugging/kernel-driver-development-debugging.tex
+++ b/slides/kernel-driver-development-debugging/kernel-driver-development-debugging.tex
@@ -171,12 +171,15 @@ dev_info(&pdev->dev, "in probe\n");
\item Allows to run multiple debug / rescue commands even when the
kernel seems to be in deep trouble
\begin{itemize}
- \item On PC: \code{[Alt]} + \code{[SysRq]} + \code{<character>}
- \item On embedded: break character on the serial line +
- \code{<character>}
+ \item On PC: press \code{[Alt]} + \code{[SysRq]} + \code{<character>}
+ simultaneously
+ \item On embedded: in the console, send a break character
+ (Picocom: press \code{[Ctrl]} + \code{a} followed by \code{[Ctrl]}
+ + \code{\ }), then press \code{<character>}
\end{itemize}
\item Example commands:
\begin{itemize}
+ \item \code{h}: show available commands
\item \code{s}: sync all mounted filesystems
\item \code{b}: reboot the system
\item \code{n}: makes RT processes nice-able.
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