linux-kernel - Re: [PATCH] crypto: Use zeroing memory allocator instead of allocator/memset

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Date:   Sun, 31 Dec 2017 18:10:05 +0100 (CET)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Himanshu Jha <himanshujha199640@...il.com>
cc:     Joe Perches <joe@...ches.com>, herbert@...dor.apana.org.au,
        davem@...emloft.net, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] crypto: Use zeroing memory allocator instead of
 allocator/memset



On Sun, 31 Dec 2017, Himanshu Jha wrote:

> On Sun, Dec 31, 2017 at 07:46:09AM -0800, Joe Perches wrote:
> > On Sun, 2017-12-31 at 17:54 +0530, Himanshu Jha wrote:
> > > Use dma_zalloc_coherent for allocating zeroed
> > > memory and remove unnecessary memset function.
> > >
> > > Done using Coccinelle.
> > > Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci
> >
> > I thought you were going to change this tag to
> > not use the "-by:" form and use something else
> > like "generated-using:" or "created-with:".
>
> Thanks for pointing that out!
>
> I was going to ask this to Julia for the appropriate tag, but it slipped
> my mind. In future I will definitely choose more appropriate tag
> on the Coccinelle patches.
>
> Just to give an insight of the problem to everyone :
>
> While running checkpatch on patches involving the above Generated-by
> tag, which is generally used to specify the cocci script used,
> checkpatch prompts the below warning and error :
>
> WARNING: Non-standard signature: Generated-by:
> #10:
> Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci
>
> ERROR: Unrecognized email address:
> 'scripts/coccinelle/api/alloc/kzalloc-simple.cocci'
>
> Joe suggested to not use the "-by:" form since it should be reserved
> for actual people's names and email addresses.
> And if you use other tag than the "-by:" tag, then there is no
> error/warning produced.

kbuild uses eg

Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci

julia


>
> Thanks
> Himanshu Jha
>