From: Dave Hansen <dave.hansen@linux.intel.com>
To: Yu-cheng Yu <yu-cheng.yu@intel.com>, Borislav Petkov <bp@alien8.de>
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
torvalds@linux-foundation.org, tglx@linutronix.de,
oleg@redhat.com, ravi.v.shankar@intel.com, fenghua.yu@intel.com,
mingo@kernel.org, quentin.casasnovas@oracle.com, bp@suse.de,
hpa@zytor.com, luto@amacapital.net,
sai.praneeth.prakhya@intel.com,
linux-tip-commits@vger.kernel.org
Subject: Re: [tip:x86/asm] x86/fpu: Fix early FPU command-line parsing
Date: Fri, 15 Jan 2016 13:01:37 -0800 [thread overview]
Message-ID: <56995E31.6040202@linux.intel.com> (raw)
In-Reply-To: <20160115205035.GA32625@test-lenovo>
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.
next prev parent reply other threads:[~2016-01-15 21:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-06 22:24 [PATCH 0/4] x86/fpu: FPU init code bugfixes yu-cheng yu
2016-01-06 22:24 ` [PATCH 1/4] x86/fpu: Fix early fpu command-line parsing yu-cheng yu
2016-01-12 12:00 ` [tip:x86/asm] x86/fpu: Fix early FPU " tip-bot for yu-cheng yu
2016-01-15 20:28 ` Borislav Petkov
2016-01-15 20:50 ` Yu-cheng Yu
2016-01-15 21:01 ` Dave Hansen [this message]
2016-01-15 21:09 ` Borislav Petkov
2016-01-06 22:24 ` [PATCH 2/4] x86/fpu: Disable XGETBV1 when no XSAVE yu-cheng yu
2016-01-12 12:01 ` [tip:x86/asm] " tip-bot for yu-cheng yu
2016-01-06 22:24 ` [PATCH 3/4] x86/fpu: Disable MPX when eagerfpu is off yu-cheng yu
2016-01-12 12:01 ` [tip:x86/asm] " tip-bot for yu-cheng yu
2016-01-06 22:24 ` [PATCH 4/4] x86/fpu: Disable AVX " yu-cheng yu
2016-01-12 12:01 ` [tip:x86/asm] " tip-bot for yu-cheng yu
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