[lttng-dev] [RFC PATCH liburcu] urcu-bp: introduce urcu_bp_disable_sys_membarrier()

[Mathieu Desnoyers]

----- On Nov 22, 2019, at 1:37 PM, Norbert Lange nolange79 at gmail.com wrote:

> I still would like to propose having a compile time "off switch",
> cant see how this would work with preloaded libraries for one
> (lttng itself whips with multiple)

One option would be to introduce an environment variable that would
control this.

> 
> Cant tell for sure now, but a setup where "bulletproof Xenomai"
> libraries are used seems to better than special setup magic.
> If you have to do do alot measurements for finding rare hiccups,
> the last thing you want it figuring out you forget one config.

Indeed. I'm not sure what's the best way forward however.

Thanks,

Mathieu

> 
> Thanks for the speedy support, Norbert

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com