[bootlin/training-materials updates] master: Kernel labs: suggest to use LZO compression and add reference to our boot time course (e211a68f)

[Thomas Petazzoni]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/e211a68f464aa1d74529df976a8e886124aeb927

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commit e211a68f464aa1d74529df976a8e886124aeb927
Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
Date:   Wed Apr 21 12:20:02 2021 +0200

    Kernel labs: suggest to use LZO compression and add reference to our boot time course
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>


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e211a68f464aa1d74529df976a8e886124aeb927
 .../kernel-compiling-and-nfs-booting.tex                             | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/labs/kernel-compiling-and-nfs-booting/kernel-compiling-and-nfs-booting.tex b/labs/kernel-compiling-and-nfs-booting/kernel-compiling-and-nfs-booting.tex
index 9caeeca0..f46be924 100644
--- a/labs/kernel-compiling-and-nfs-booting/kernel-compiling-and-nfs-booting.tex
+++ b/labs/kernel-compiling-and-nfs-booting/kernel-compiling-and-nfs-booting.tex
@@ -87,6 +87,11 @@ Add the below options to support networking over USB device:
 Make sure that this configuration has \kconfigval{CONFIG_ROOT_NFS}{y} (support
 booting on an NFS exported root directory).
 
+To save about 1 second every time you boot or reboot, as shown in our
+\href{https://bootlin.com/training/boot-time}{Embedded Linux Boot Time
+Optimization course}, you can also replace LZMA kernel compression by LZO
+compression (\kconfig{CONFIG_KERNEL_LZO}).
+
 \section{Kernel compiling}
 
 Compile your kernel and generate the Device Tree Binaries (DTBs)