Lazy TLS initialization vs. TCMalloc.

[Carlos O'Donell]

I was asked to comment on Ceph/TCMalloc deadlock problems
which appeared to be glibc-related. Given that I stood up
and represented the community I'm posting what I wrote
here for posterity:

http://tracker.ceph.com/issues/13522#note-23

The basic problem is that lazy TLS initialization has
unknown requirements on the interposing malloc and TCMalloc
gets it wrong.

I hope that we can find somebody to fix the issue and that
consensus remains that dlopen should allocate up front to
avoid the issues with lazy initialization.

-- 
Cheers,
Carlos.