[PATCH 2/2] devtools: forbid the use of ffs compiler builtins

[Stephen Hemminger]

On Wed, 16 Oct 2024 15:54:11 +0200
Mattias Rönnblom <mattias.ronnblom at ericsson.com> wrote:

> Extend checkpatches.sh to detect the use of __builtin_(ffs|ffsll).
> 
> These intrinsics are not available in MSVC, and there are perfectly
> serviceable alternatives in <rte_bitops.h>.
> 
> Signed-off-by: Mattias Rönnblom <mattias.ronnblom at ericsson.com>
> Suggested-by: David Marchand <david.marchand at redhat.com>

Shouldn't this apply to all _builtin_ functions.

There are a lot of drivers still doing this.