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Message-ID: <1495709164.25090.23.camel@petrovitsch.priv.at>
Date: Thu, 25 May 2017 12:46:04 +0200
From: Bernd Petrovitsch <bernd@...rovitsch.priv.at>
To: Joe Perches <joe@...ches.com>,
Alexey Dobriyan <adobriyan@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] CodingStyle: delete "kmalloc(sizeof(*var))" as
preferred allocation form
On Thu, 2017-05-25 at 03:35 -0700, Joe Perches wrote:
> On Wed, 2017-05-24 at 13:18 +0300, Alexey Dobriyan wrote:
> > Proper fix is to introduce typed allocation macros with the following
> > signatures:
> >
> > T* lmalloc(T, gfp);
Ack (FWIW).
[...]
> > struct foo *x;
> > x = lmalloc(struct foo, GFP_KERNEL);
>
> Then code would be written
>
> x = lmalloc(typeof(*x), GFP_KERNEL);
At least it is correct and changes automagically if x changes the type
which
struct bar *x;
x = kmalloc(sizeof(struct foo), GFP_KERNEL);
doesn't do and the compiler doesn't complain.
And the typeof() version could be written that way today but I can't
remember seeing it (in the kernel and elsewhere).
MfG,
Bernd
--
Bernd Petrovitsch Email : bernd@...rovitsch.priv.at
LUGA : http://www.luga.at
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