This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
Re: [ping] Re: Lock elision tuning interface
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Andi Kleen <andi at firstfloor dot org>
- Cc: GNU C Library <libc-alpha at sourceware dot org>
- Date: Mon, 5 Jan 2015 14:59:09 -0800
- Subject: Re: [ping] Re: Lock elision tuning interface
- Authentication-results: sourceware.org; auth=none
- References: <1418974667-32587-1-git-send-email-andi at firstfloor dot org> <87zj9weuvk dot fsf at tassilo dot jf dot intel dot com>
On Mon, Jan 5, 2015 at 2:16 PM, Andi Kleen <andi@firstfloor.org> wrote:
> Andi Kleen <andi@firstfloor.org> writes:
>
> Ping! Any comments on this patchkit?
>
> Thanks,
>
> -Andi
>
>> This patchkit is an updated version of the glibc elision tuning
>> interface through environment variables. An earlier variant
>> of this code was in the original elision code submission,
>> but was not added.
>>
>> This version updates it to include a white list through
>> a configuration file. This allows to disable it as needed,
>> when there are concerns that changing elision parameters
>> may impact root programs.
>>
>> The white list can also be enabled/disabled at build time.
>>
>> I would like to have the environment interface because
>> it gives more flexibility to distributions. For example
>> they can disable elision by default, but still allow
>> users to override that choice. Or enable it by default,
>> but allow disabling if needed. In addition it also
>> allows to tune the various retry parameters.
>>
>> I also included the test code and the manual
>> that did not make it in last time.
>>
>> -Andi
>
Can you provide a link for the patches?
--
H.J.