netdev - Re: [PATCH] net: sched: One function call less in em_meta

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Message-ID: <54CD52A8.3040909@gmx.de>
Date:	Sat, 31 Jan 2015 23:09:44 +0100
From:	Lino Sanfilippo <LinoSanfilippo@....de>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>,
	"David S. Miller" <davem@...emloft.net>,
	Jamal Hadi Salim <jhs@...atatu.com>, netdev@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH] net: sched: One function call less in em_meta_change()
 after error detection

On 31.01.2015 22:52, SF Markus Elfring wrote:
>>> -errout:
>>> -	if (err && meta)
>>> -		meta_delete(meta);
>> 
>> Since this patch seems to be about optimization and cleanup you should
>> probably also remove the now unnecessary initialization of "meta" with
>> NULL at the beginning of the function...
> 
> Will the optimiser of the C compiler drop any remaining unnecessary
> variable initialisations?
> 

I dont know if that matters, since the code is not only used by
compilers but also read by humans.

> Do you want another update step here?
> 

I am not the one who decides if this patch is acceptable or not. But I
vote for a removal of that assignment (as a part of the same patch).

Regards,
Lino


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