[RFC][PATCH] tunables: Add elision tunable

[Stefan Liebler]

On 09/13/2017 03:42 PM, Gabriel F. T. Gomes wrote:
> On 12 Sep 2017, Stefan Liebler wrote:
> 
>> I've also used a small s390 specific test program to check wether a
>> mutex was elided or not:
>> ./prog
>> Lock was a normal lock!
>>
>> GLIBC_TUNABLES=glibc.elision.enable=0 ./prog
>> Lock was a normal lock!
>>
>> GLIBC_TUNABLES=glibc.elision.enable=1 ./prog
>> Lock was elided via a transaction! (nesting-depth=1)
>>
>> GLIBC_TUNABLES=glibc.elision.enable=1 ./prog_secure
>> Lock was a normal lock!
> 
> Would you be willing to share this test program (and your build
> configurations)?  I understand that it is s390-specific, but it could help
> anyway (at least for my education, it will).
> 

Yes sure, please see the notes in the attached file.

Bye
Stefan
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