linux-kernel - Re: [PATCH] perf/x86: Use kmalloc_array() in merge

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Message-ID: <20160905075149.GQ10153@twins.programming.kicks-ass.net>
Date:   Mon, 5 Sep 2016 01:51:49 -0600
From:   Peter Zijlstra <peterz@...radead.org>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
CC:     <x86@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>,
        "Julia Lawall" <julia.lawall@...6.fr>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [PATCH] perf/x86: Use kmalloc_array() in merge_attr()

On Sun, Sep 04, 2016 at 11:00:15AM +0200, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Sun, 4 Sep 2016 10:45:20 +0200
> 
> * A multiplication for the size determination of a memory allocation
>   indicated that an array data structure should be processed.
>   Thus use the corresponding function "kmalloc_array".
> 
>   This issue was detected by using the Coccinelle software.
> 
> * Replace the specification of a data structure by a pointer dereference
>   to make the corresponding size determination a bit safer according to
>   the Linux coding style convention.

Why!?