misc spelling fixes

Signed-off-by: Michael Opdenacker <[email protected]>
Reported-by: Christian Loehle <[email protected]>

labs/preempt-rt-application-development/preempt-rt-application-development.tex

@@ -10,7 +10,7 @@ \section{Compile and run the program}
 
 Compile the crc\_test program: \code{make}
 
-Test the various options, and analyse how the Stack and Heap are allocated and
+Test the various options, and analyze how the Stack and Heap are allocated and
 pre-faulted.
 
 Use ftrace to visualise the page-fault occurings:

labs/preempt-rt-benchmarking/preempt-rt-benchmarking.tex

@@ -3,7 +3,7 @@
 During this lab, you will:
 \begin{itemize}
   \item Use benchmarking tools to measure the latencies of a system
-  \item Use stressors to analyse various scenarios
+  \item Use stressors to analyze various scenarios
   \item Determine suitable options to further improve latencies
 \end{itemize}
 

labs/preempt-rt-patch-download/preempt-rt-patch-download.tex

@@ -140,5 +140,5 @@ \section{Checking that we run a Patched kernel}
 \section{Fixing our first kernel bug}
 
 You should see quite a lot of \code{BUG: scheduling while atomic} messages. The
-actual issue is non-trivial to fix, but it's a nice example to analyse.
+actual issue is non-trivial to fix, but it's a nice example to analyze.
 

slides/kernel-driver-development-sleeping/kernel-driver-development-sleeping.tex

@@ -222,7 +222,7 @@ \subsection{Sleeping}
     system clock
     \begin{itemize}
     \item \kfunc{wait_event} helpers are (also) very useful outside of
-      interruption situations
+      interrupt situations
     \item Release the CPU with \kfunc{schedule}
     \end{itemize}
   \item For shorter pauses, use helpers which implement software loops

slides/realtime-linux-benchmarking/realtime-linux-benchmarking.tex

@@ -152,7 +152,7 @@ \section{Testing and Benchmarking}
 		\item Can differentiate the IRQ wakeup time from the scheduling wakeup time
 		\item IRQ wakeup latency time: delay with which the timer interrupt arrived
 		\item Thread latency: delay for the thread wakeup
-		\item Can use \code{osnoise} tracepoints to analyse the delay sources
+		\item Can use \code{osnoise} tracepoints to analyze the delay sources
 	\end{itemize}
 	%%% Schematics
 \end{frame}
@@ -226,7 +226,7 @@ \subsection{Benchmarking an application}
 	\frametitle{strace}
 	strace is a userspace tool that trace system-calls and signals
 	\begin{itemize}
-		\item Help analyse how an application interacts with the kernel
+		\item Help analyze how an application interacts with the kernel
 		\item Some syscalls can be detrimental to RT behaviour
 		\item strace can help understand what an application does
 		\item Helpful for external libraries

slides/realtime-linux-configuration/realtime-linux-configuration.tex

@@ -97,7 +97,7 @@ \section{Configuring the system}
 		\item \textbf{R}ead \textbf{C}opy \textbf{U}pdate
 		\item Synchronisation mechanism that can deferred object reclamation
 		\item Deffered reclamation can be executed on any CPU \code{RCU callbacks}
-		\item We can preven CPU cores from running RCU callbacks with \code{rcu_nocbs=<cpus> rcu_nocb_poll}
+		\item We can prevent CPU cores from running RCU callbacks with \code{rcu_nocbs=<cpus> rcu_nocb_poll}
 	\end{itemize}
 	\begin{center}\textbf{Workqueues}\end{center}
 	\begin{itemize}

slides/realtime-linux-realtime-systems/realtime-linux-realtime-systems.tex

@@ -62,7 +62,7 @@ \section{Realtime Systems}
 	\end{column}
 		\begin{column}{0.65\textwidth}
 			\begin{itemize}
-				\item Oportunistic sleeping modes
+				\item Opportunistic sleeping modes
 				\item Dynamic Frequency Scaling
 				\item Only go fast when required
 				\item Long wakeup latencies
@@ -133,9 +133,9 @@ \section{Realtime Systems}
 \begin{frame}
   \frametitle{Understanding preemption (1)}
   \begin{itemize}
-  \item Most multi-tasking OSses are preemptive operating systems, including Linux
+  \item Most multi-tasking OSes are preemptive operating systems, including Linux
   \item When a task runs in user space mode and gets interrupted by an
-    interruption, if the interrupt handler wakes up another task, this
+    interrupt, if the interrupt handler wakes up another task, this
     task can be scheduled as soon as we return from the interrupt
     handler.
   \end{itemize}
@@ -187,7 +187,7 @@ \section{Realtime Systems}
 	\begin{itemize}
 		\item Multitasking implies concurrent accesses to resources
 		\item Critical resources must be protected by a dedicated mechanism
-		\item Mutexes and semaphores help synchronise (or serialize) accesses
+		\item Mutexes and semaphores help synchronize (or serialize) accesses
 		\item This needs to be looked at closely in RT context
 		\item A low-priority task migh hold a lock, blocking a high-priority task
 	\end{itemize}