[FE training-materials-updates] sysdev-kernel-cross-compiling: slightly improve wording and explanations

[Thomas Petazzoni]

Repository : git://git.free-electrons.com/training-materials.git

On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=e5fe3f73903b7c2d0da0be61a4bc192bc45e0f01

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commit e5fe3f73903b7c2d0da0be61a4bc192bc45e0f01
Author: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Date:   Thu Oct 4 18:10:57 2012 +0200

    sysdev-kernel-cross-compiling: slightly improve wording and explanations
    
    Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>


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

e5fe3f73903b7c2d0da0be61a4bc192bc45e0f01
 .../sysdev-kernel-cross-compiling.tex              |   11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex b/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex
index 2c3bcea..65d745f 100644
--- a/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex
+++ b/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex
@@ -63,10 +63,10 @@ ready-made configuration.
 Don't hesitate to visualize the new settings by running
 \code{make xconfig} afterwards!
 
-For later use, we need to edit a bit the configuration. Change the
-kernel compression from Gzip to LZMA. This compression algorithm is
-far more efficient than Gzip, in terms of compression ratio, at the
-expense of a higher decompression time.
+As an example of configuration modification, let's change the kernel
+compression from Gzip to LZMA. This compression algorithm is far more
+efficient than Gzip, in terms of compression ratio, at the expense of
+a higher decompression time.
 
 \section{Cross compiling}
 
@@ -76,7 +76,8 @@ You're now ready to cross-compile your kernel. Simply run:
 make
 \end{verbatim}
 
-and wait a while for the kernel to compile.
+and wait a while for the kernel to compile. Don't forget to use
+\code{make -j<n>} if you have multiple cores on your machine!
 
 Look at the end of the kernel build output to see which file contains
 the kernel image.