linux-kernel - Re: [KJ] replacing kmalloc with kzalloc in io

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Message-ID: <aday7gf8hw4.fsf@cisco.com>
Date:	Mon, 13 Aug 2007 10:27:07 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	"Robert P. J. Day" <rpjday@...dspring.com>
Cc:	Mariusz Kozlowski <m.kozlowski@...land.pl>,
	surya.prabhakar@...ro.com, mingo@...hat.com,
	yaku@...1.kbnes.nec.co.jp, kisimoto@...1.kbnes.nec.co.jp,
	zab@...hat.com, Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [KJ] replacing kmalloc with kzalloc in io_apic.c

 > from my days submitting numerous patches of this type, i can recall
 > that in cases like the above, it's a judgment call -- use kzalloc to
 > get the zeroing, or use kcalloc to get the array-flavoured behaviour.
 > what a shame you can't have both at the same time.

kcalloc() zeros memory just like standard calloc() in userspace.

As <linux/slab.h> says:

 * kcalloc - allocate memory for an array. The memory is set to zero.
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