Re: [PATCH v2 2/2] Documentation: dev-tools: Enhance static analysis section with discussion
Julia Lawall <[email protected]> Wed, 30 Mar 2022 10:06:22 +0200 (CEST)
| Newsgroups | org.kernel.vger.smatch,fr.inria.cocci,org.kernel.vger.linux-doc,org.kernel.vger.linux-kernel,org.kernel.vger.linux-sparse |
|---|---|
| Message-ID | <alpine.DEB.2.22.394.2203301005010.2592@hadrien> |
> +Strong points of Smatch and Coccinelle > +-------------------------------------- > + > +Coccinelle is probably the easiest for writing checks. It works before the > +pre-compiler so it's easier to check for bugs in macros using Coccinelle. pre-processor > +Coccinelle also writes patches fixes for you which no other tool does. writes patches fixes -> creates patches > + > +With Coccinelle you can do a mass conversion from you can -> you can, for example, julia > +``kmalloc(x * size, GFP_KERNEL)`` to ``kmalloc_array(x, size, GFP_KERNEL)``, and > +that's really useful. If you just created a Smatch warning and try to push the > +work of converting on to the maintainers they would be annoyed. You'd have to > +argue about each warning if can really overflow or not. > + > +Coccinelle does no analysis of variable values, which is the strong point of > +Smatch. On the other hand, Coccinelle allows you to do simple things in a simple > +way. > -- > 2.35.1 > >