I am trying to install RT kernel on my Ubuntu 18 laptop to work with very high feedback rate. This is my first time attempting something similar and I have no idea what I am doing. (Sorry)
I am following instructions from here
I dowloaded these files: patches-5.4.193-rt74.tar.xz and patch-5.4.193-rt74.patch.xz.
Then unpacked patches-5.4.193-rt74.tar.xz according to instructions like this:
xz -cd patches-5.4.193-rt74.tar.xz | tar xvf -
Now my folder looks like this:
patch-5.4.193-rt74.patch.xz patches patches-5.4.193-rt74.tar.xz
I got folder patches which contains a lot of files with extension ".patch". According to the instruction I should navigate into the folder:
cd patches
Finally, I attempt to apply patch:
xzcat ../patch-5.4.193-rt74.patch.xz | patch -p1
And get the following message:
can't find file to patch at input line 5
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff --git a/Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html b/Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html
|index 57300db4b5ff..31c99382994e 100644
|--- a/Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html
|+++ b/Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html
--------------------------
File to patch:
I saw this issue, but I don't know how to apply it to my case. I tried to use -p0 instead of -p1 and tried to run the command without the option, but it doesn't help. I read the manual man patch, but it didn't help me to solve the issue
I also tried the same procedure with older versions, the only difference was that it sometimes was looking not for Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html but some other files
Please explain what I am doing wrong, or direct me to a material I can learn from
I am not sure if tags I chose are relevant, feel free to correct me
So in the end my folder looks like this:
- rt_kernel_build
- patch-5.4.193-rt74.patch.xz
- patches
- 0001-lib-smp_processor_id-Don-t-use-cpumask_equal.patch
- ...
- patches-5.4.193-rt74.tar.xz
I call xzcat ../patch-5.4.193-rt74.patch.xz | patch -p1 in patches folder
