__libc_internal_tsd_*

[Jakub Jelinek <jakub at redhat dot com>]

Hi!

Just wondering whether it wouldn't be better to reduce the number of
__libc_internal_tsd_* variables out there for dynamic libraries (ATM
we have 3 copies, ld.so, libc.so and libpthread.so) and instead
just use one in ld.so (perhaps with rtld_hidden* aliases for ld.so,
so it doesn't need the .got entries).
__pthread_initialize_minimal needs to be called anyway and thus could
fill it in...
This would be IMHO especially good for
prelink, since now __libc_internal_tsd_* are always conflicts (at least
in ld.so, but in threaded programs in libc.so too).

If you don't think this is a good idea, we should at least put
__libc_internal_tsd_address in a separate source from the rest of no-tsd.c
(no-tsda.c?), so that ld.so which doesn't use it at all doesn't export it.
Well, if we do what I suggested above, it would make sense to split it too,
since then __libc_internal_tsd_address can have its home in libc.so and
thus loads from it can go through an hidden alias (which is bypassing
one indirection (.got))...

What do you think?

	Jakub