[PATCH net-next] net:drivers/net: Miscellaneous conversions to ETH_ALEN
joe at perches.com
Wed Oct 2 20:09:14 EDT 2013
On Thu, 2013-10-03 at 00:38 +0200, Julia Lawall wrote:
> On Wed, 2 Oct 2013, Joe Perches wrote:
> > On Wed, 2013-10-02 at 10:44 -0700, Luis R. Rodriguez wrote:
> > > On Tue, Oct 1, 2013 at 11:40 PM, Joe Perches <joe at perches.com> wrote:
> > > > Please include netdev. (cc'd)
> > > >
> > > >> Joe Perches <joe at perches.com> writes:
> > > >>
> > > >> > Convert the memset/memcpy uses of 6 to ETH_ALEN
> > > >> > where appropriate.
> > > >
> > > >> > Signed-off-by: Joe Perches <joe at perches.com>
> > >
> > > I think these sorts of patches are good -- but once applied it'd be
> > > good if we can get the SmPL grammar expressed for it and then have
> > > developers / maintainers regularly doing:
> > >
> > > make coccicheck MODE=patch M=path > path-cocci.patch
> > >
> > > Unfortunately right now MODE=patch takes about 3 1/2 minutes for
> > > ath9k, MODE=org takes ~10 minutes for ath9k (17 minutes for all of
> > > ath/), and MODE=context takes ~8 minutes on ath9k -- I do believe its
> > > a bit unreasonable to expect patch submitters to use this, but
> > > certainly great practice. Some of the time differences on the reports
> > > can be explained by the fact that some SmPL will only be used for some
> > > modes.
> > >
> > > Even though it takes a while right now it'd be great practice to use
> > > coccicheck to prevent these type of changes from going in again,
> > > things that checkpatch.pl won't be able to catch.
> > As far as I can tell, it's basically not possible for cocci to
> > do this conversion.
> I tried looking for memcpys and memsets that do use ETH_ALEN and then
> seeing what non-local functions the affected values flow to. I then
> marked all of the calls to memcpy and memset that use 6 where an affected
> value flows to one of the functions identified in the first pass. I get
> 40 unique results on Linux 3.10.
> The semantic patch is below. It needs to be cleaned up to not return
> duplicate results. It needs to be run with the argument --no-show-diff,
> and the result is printed in emacs org mode.
This has been running a _long_ time (broken?) on
$ spatch --version
spatch version 1.0.0-rc14 without Python support and with PCRE support
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