Re: [PATCH] checkpatch: Test for kmalloc/memset(0) pairs

From: Jonathan Corbet
Date: Thu Mar 17 2011 - 23:14:24 EST

On Thu, 17 Mar 2011 22:52:24 -0400
Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> The use of kzalloc() is preferred over kmalloc/memset(0) pairs.
> When a match is made with "memset(p, 0, s);" a search back through the
> patch hunk is made looking for "p = kmalloc(s,". If that is found, then
> a warning is given, suggesting to use kzalloc() instead.

The Coccinelle stuff already has a lot of this kind of test. See, for
example, scripts/coccinelle/api/alloc/kzalloc-simple.cocci. Suppose
there is some way all this nice analysis infrastructure could be
integrated instead of duplicated? Or am I just a crazy dreamer?

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