http://www.tuxradar.com/content/newbies-guide-hacking-linux-kernel

Make patch:

diff -uprN linux-3.15.2 linux-3.15.2-dprio > linux-3.15.2-dprio.patch

./mk-patch.sh linux-3.15.2 dprio

git diff -p --stat <path1> <path2>

Current fileset vs. last commit:

git add --all .

git diff -p --stat HEAD

Or:

./mk-patch-git.sh 3.10 3.10-mypatch

Various checks:

scripts/checkpatch.pl [--strict | --subjective] ../xxx.patch

make EXTRA_CFLAGS=-W
sparse: make C=2 [CF=" -D__CHECK_ENDIAN__"] [dir]
make header_check
make checkstack
make namespacecheck

Rebasing:

./rebase.sh 3.10 3.10-mypatch 3.12 3.12-mypatch
./mk-patch-git 3.12 3.12-mypatch

Typically when posting the patch want to rebase it against the tip:

git clone git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
rm -rf tip/.git
./rebase.sh 3.10 3.10-mypatch tip tip-mypatch
./mk-patch-git tip tip-mypatch

Test with:

CONFIG_LOCKDEP
CONFIG_DEBUG_PREEMPT
CONFIG_DEBUG_SLAB or SLUB_DEBUG_ON
CONFIG_ DEBUG_PAGEALLOC
CONFIG_ DEBUG_MUTEXES
CONFIG_ DEBUG_SPINLOCK
CONFIG_ DEBUG_ATOMIC_SLEEP
CONFIG_PROVE_RCU
CONFIG_DEBUG_OBJECTS_RCU_HEAD
CONFIG_PROVE_LOCKING
CONFIG_LOCK_ALLOC
CONFIG_DYNAMIC_DEBUG
CONFIG_DEBUG_OBJECTS
CONFIG_DEBUG_OBJECTS_WORK

Expensive:

CONFIG_DEBUG_OBJECTS_FREE
CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER

Test with:

CONFIG_PREEMPT_NONE
CONFIG_PREEMPT_VOLUNTARY
CONFIG_PREEMPT

In the former two cases may want to disable CONFIG_ DEBUG_ATOMIC_SLEEP,
since it enables CONFIG_PREEMPT_COUNT and changes behavior.

Git operations:

git clone source-repository-address

git add --all .
git status
git commit -m "comment-text"
git tag -a "tag-name" -m "comment-text"

<copy new files>

git add --all .
git status
git commit -m "comment-text"
git tag -a "tag-name" -m "comment-text"

git log -p -1 --stat

git push origin master