Hello, I have taken another look also at places from two information sources. A) https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Makefile?id=cdd3bb54332f82295ed90cd0c09c78cd0c0ee822#n201 “… # Use 'make C=1' to enable checking of only re-compiled files. # Use 'make C=2' to enable checking of *all* source files, regardless # of whether they are re-compiled or not. …” B) https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/dev-tools/coccinelle.rst?id=cdd3bb54332f82295ed90cd0c09c78cd0c0ee822#n182 “… To check only newly edited code, use the value 2 for the C flag, i.e.:: …” How good do these description variants fit together? Regards, Markus