linux-kernel - Re: Adjusting further size determinations?

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Date:   Wed, 18 Oct 2017 13:00:33 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     Joe Perches <joe@...ches.com>, linux-integrity@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Cc:     Julia Lawall <julia.lawall@...6.fr>,
        Alexander.Steffen@...ineon.com,
        James Bottomley <James.Bottomley@...senPartnership.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Corentin Labbe <clabbe.montjoie@...il.com>,
        Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
        Jerry Snitselaar <jsnitsel@...hat.com>,
        Kenneth Goldman <kgold@...ux.vnet.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Nayna Jain <nayna@...ux.vnet.ibm.com>,
        Paul Mackerras <paulus@...ba.org>,
        Peter Hüwe <PeterHuewe@....de>,
        Stefan Berger <stefanb@...ux.vnet.ibm.com>,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: Adjusting further size determinations?

> Ugly grep follows:
> 
> $ grep -rohP --include=*.[ch] "\w+\s*=\s*[kv].alloc\s*\(\s*sizeof.*," * | \
>   sed -r -e 's/(\w+)\s*=\s*[kv].alloc\s*\(\s*sizeof\s*\(\s*\*\s*\1\s*\)/foo = k.alloc(sizeof(*foo))/' \
>          -e 's/(\w+)\s*=\s*[kv].alloc\s*\(\s*sizeof\s*\(\s*struct\s+\w+\s*\)/foo = k.alloc(sizeof(struct foo))/' | \
>   sort | uniq -c | sort -rn | head -2
>    6123 foo = k.alloc(sizeof(*foo)),
>    3060 foo = k.alloc(sizeof(struct foo)),

Would you like to get this ratio changed in any ways?

Available development tools could help to improve the software situation
in a desired direction, couldn't they?


>> Unpleasant consequences are possible in both cases.

How much do you care to reduce the failure probability further?

Regards,
Markus