linux-kernel - Re: [PATCH] Fake NUMA emulation for PowerPC

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Message-ID: <4759BE88.3020702@linux.vnet.ibm.com>
Date:	Sat, 08 Dec 2007 03:13:36 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
CC:	linuxppc-dev@...abs.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Fake NUMA emulation for PowerPC

Balbir Singh wrote:
> Geert Uytterhoeven wrote:
>> On Sat, 8 Dec 2007, Balbir Singh wrote:
>>> +	if (strstr(p, "fake="))
>>> +		cmdline = p + 5;	/* 5 is faster than strlen("fake=") */
>> Really? My gcc is smart enough to replace the `strlen("fake=")' by 5, even
>> without -O.
>>
> 
> Thanks for pointing that out, but I am surprised that a compiler would
> interpret library routines like strlen.
> 

I just tested it and it turns out that you are right. I'll go hunt to
see where gcc gets its magic powers from.

>> With kind regards,
>>
>> Geert Uytterhoeven
>> Software Architect
> 
> 


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