linux-kernel - Documentation: Coccinelle: Checking information around the make parameter “C=2”

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Date:   Fri, 3 Jul 2020 21:21:51 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     linux-doc@...r.kernel.org, Coccinelle <cocci@...teme.lip6.fr>
Cc:     kernel-janitors@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Jonathan Corbet <corbet@....net>,
        Julia Lawall <julia.lawall@...6.fr>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nicolas Palix <nicolas.palix@...g.fr>,
        Randy Dunlap <rdunlap@...radead.org>
Subject: Documentation: Coccinelle: Checking information around the make parameter “C=2”

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