How to create linux kernel patch

‘diff ‘ command is the easiest way to create unix kernel patch.Follow below given steps to create patch

1.Before using the ‘diff ‘ command, run

make clean

and

make mrproper

commands in source directories of both experimental and original kernel to remove executable and object files.if you don’t run this command you will end up with a messy patch.

2.Now use ‘diff’ command as follow

diff  ['options'] [ 'from-file']  [ 'to-file']  > ['patch-file-destination']

for example

diff   -rcNP   /usr/src/linux-3.1.4-org   /usr/src/linux-3.1.4   >   /tmp/patch.diff

a patch file will be generated at /tmp .

enjoy!!