Proposal: Slow dynamic TLS for internal glibc use

[Adhemerval Zanella]

On 23/10/2018 09:18, Florian Weimer wrote:
> We have a lot of legacy interfaces which are not thread-safe: strtok,
> many, many NSS functions such as gethostbyname, wide character functions
> when invoked with a NULL state parameter, strerror, getpass, rpmatch,
> localtime and so on.
> 
> Currently, most of these functions use global variables which take up
> space in .bss.  This introduces overhead even if they are never used,
> and these functions are of course not thread-safe.

Do we have any numbers of the overhead we are taking in consideration
here?