linux-kernel - Re: [tip:x86/asm] x86/fpu: Fix early FPU command-line parsing

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Message-ID: <56995E31.6040202@linux.intel.com>
Date:	Fri, 15 Jan 2016 13:01:37 -0800
From:	Dave Hansen <dave.hansen@...ux.intel.com>
To:	Yu-cheng Yu <yu-cheng.yu@...el.com>, Borislav Petkov <bp@...en8.de>
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org,
	torvalds@...ux-foundation.org, tglx@...utronix.de, oleg@...hat.com,
	ravi.v.shankar@...el.com, fenghua.yu@...el.com, mingo@...nel.org,
	quentin.casasnovas@...cle.com, bp@...e.de, hpa@...or.com,
	luto@...capital.net, sai.praneeth.prakhya@...el.com,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/asm] x86/fpu: Fix early FPU command-line parsing

On 01/15/2016 12:50 PM, Yu-cheng Yu wrote:
>> > 
>> > This could certainly be improved: we're iterating over the *whole*
>> > command line each time for each option unconditionally instead of
>> > iterating word by word and comparing it with all strings.
>> > 
>> > We'd need something like cmdline_for_each_word() or so, though...
>> > 
> That is a good point. I will work on it.

I really don't think we need to do this.  It's code that runs *ONCE* at
boot time.  Let's not work on optimizing it unless we have some acute need.