Notes and bookmarks I’ve gathered by doing the Eyduptula challenge
Must read
- Linux Loadable Kernel Module HOWTO
- Linux Kernel Newbies - KernelBuild
- Documentation/SubmittingPatches in the Linux source tree
- Documentation/CodingStyle
- Documentation/email-clients.txt
Grab yourself a copy of the mainline kernel repository
git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Build steps
.config CONFIG_LOCALVERSION_AUTO=y
make localmodconfig
make silentoldconfig
make menuconfig
make -j4 all
make modules_install
make install
Make a patch
SRCTREE= linux
MYFILE= drivers/net/mydriver.c
cp $MYFILE $MYFILE.orig
vi $MYFILE # make your change
cd ..
diff -up $SRCTREE/$MYFILE{.orig,} > /tmp/patch
Multiple files
MYSRC= /dev/linux
tar xvzf linux-3.19.tar.gz
mv linux-3.19 linux-3.19-vanilla
diff -uprN linux-3.19-vanilla/Documentation/dontdiff \
linux-3.19-vanilla $MYSRC > /tmp/patch
Check your patches with the patch style checker scripts/checkpatch.pl
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