linux-kernel - Re: [PATCH 4/7] ARM: oprofile: Move non-ARM code into separate init/exit

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Message-ID: <20101006184407.GY13563@erda.amd.com>
Date:	Wed, 6 Oct 2010 20:44:07 +0200
From:	Robert Richter <robert.richter@....com>
To:	Grant Likely <grant.likely@...retlab.ca>
CC:	Paul Mundt <lethal@...ux-sh.org>,
	Matt Fleming <matt@...sole-pimps.org>,
	Will Deacon <will.deacon@....com>,
	Russell King <linux@....linux.org.uk>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-sh@...r.kernel.org" <linux-sh@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Deng-Cheng Zhu <dengcheng.zhu@...il.com>
Subject: Re: [PATCH 4/7] ARM: oprofile: Move non-ARM code into separate
 init/exit

On 06.10.10 14:23:17, Grant Likely wrote:
> >> diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c
> >> index b336cd9..76d97a5 100644
> >> --- a/drivers/oprofile/oprof.c
> >> +++ b/drivers/oprofile/oprof.c
> >> @@ -252,6 +252,8 @@ static int __init oprofile_init(void)
> >>  {
> >>       int err;
> >>
> >> +     memset(&oprofile_ops, 0, sizeof(struct oprofile_operations));
> >> +
> >
> > Yes, this looks much better. Thanks Paul.
> 
> oprofile_ops is allocated in bss and so is already zeroed.  No need to
> do it explicitly.

Before oprofile_arch_init() it isn't necessarily needed, but we should
definitely add it before oprofile_timer_init(). For code readability I
would rather tend to let the first in too.

-Robert

-- 
Advanced Micro Devices, Inc.
Operating System Research Center

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