fix various typos and wrong commands in slides

Fixes for:
- missing variable definition in Makefile
- wrong serial device in kernel parameters
- missing trace-cmd subcmd and wrong parameter (sched_switch is an
  event, not a plugin)
- missing #include in example code
- fix copy&paste leftover

Signed-off-by: Holger Dengler <dengler@linutronix.de>
Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>

5 files changed, 7 insertions, 7 deletions

diff --git a/application-devel/embedded-devel/pres_embedded-devel_en.tex b/application-devel/embedded-devel/pres_embedded-devel_en.tex
index 0d32d0c..e2f0698 100644
--- a/application-devel/embedded-devel/pres_embedded-devel_en.tex
+++ b/application-devel/embedded-devel/pres_embedded-devel_en.tex
@@ -685,6 +685,7 @@ clean:
 \begin{frame}[containsverbatim]
 \frametitle{Pattern Substitution}
 \begin{verbatim}
+EXE = hello
 SRC = hello.c file1.c file2.c
 OBJS = $(SRC:%.c=%.o)
 
diff --git a/kernel-devel/kernel-debugging/pres_kernel-debugging_en.tex b/kernel-devel/kernel-debugging/pres_kernel-debugging_en.tex
index 104d8c4..2a015a7 100644
--- a/kernel-devel/kernel-debugging/pres_kernel-debugging_en.tex
+++ b/kernel-devel/kernel-debugging/pres_kernel-debugging_en.tex
@@ -181,7 +181,7 @@ console=ttyS0,115200
 console=ttyS0,115200n8
 \end{verbatim}
 \begin{verbatim}
-console=ttyAM0,115200
+console=ttyAMA0,115200
 \end{verbatim}
 \end{frame}
 
diff --git a/kernel-devel/kernel-tracing/pres_kernel-tracing_en.tex b/kernel-devel/kernel-tracing/pres_kernel-tracing_en.tex
index 9dcd1e6..4637f24 100644
--- a/kernel-devel/kernel-tracing/pres_kernel-tracing_en.tex
+++ b/kernel-devel/kernel-tracing/pres_kernel-tracing_en.tex
@@ -400,10 +400,8 @@ stack - output, enable or disable kernel stack tracing
 \begin{frame}[fragile]
 \frametitle{trace-cmd: Usage}
 \begin{verbatim}
-# Recording a sched_switch trace
-$ trace-cmd -p sched_switch
-  plugin sched_switch
-Hit Ctrl^C to stop recording
+# Recording a sched_switch trace event
+$ trace-cmd record -e sched_switch
 Hit Ctrl^C to stop recording
 offset=ae000
 [...]
diff --git a/kernel-devel/module-basics/vain/vain.c b/kernel-devel/module-basics/vain/vain.c
index 3c7377f..fcf009e 100644
--- a/kernel-devel/module-basics/vain/vain.c
+++ b/kernel-devel/module-basics/vain/vain.c
@@ -1,3 +1,4 @@
+#include <linux/init.h>
 #include <linux/module.h>
 
 static int __init vain_init(void)
diff --git a/linux-basics/filesystems/frm_filesystem_org.tex b/linux-basics/filesystems/frm_filesystem_org.tex
index 9694766..d3d7e28 100644
--- a/linux-basics/filesystems/frm_filesystem_org.tex
+++ b/linux-basics/filesystems/frm_filesystem_org.tex
@@ -189,7 +189,7 @@ lrwxrwxrwx   1    15 symlink_abs -> /home/user/file
 \item more details: see \textbf{Linux Userspace-to-Kernel API}
 \end{itemize}
 \bigskip
-\begin{beamerboxesrounded}[shadow=true]{Listing: Hard Links}
+\begin{beamerboxesrounded}[shadow=true]{Listing: Device Nodes}
 \begin{scriptsize}
 \begin{verbatim}
 crw-r--r--   1 4, 65 devicenode_character
@@ -209,7 +209,7 @@ brw-r--r--   1 8,  0 devicenode_block
 \item socket: UNIX domain socket
 \end{itemize}
 \bigskip
-\begin{beamerboxesrounded}[shadow=true]{Listing: Hard Links}
+\begin{beamerboxesrounded}[shadow=true]{Listing: Pipe and Socket}
 \begin{scriptsize}
 \begin{verbatim}
 srwxr-xr-x   1     0 socket