Re: cvs commit: src/lib/libc/gen Makefile.inc

[David Xu <davidxu@xxxxxxxxxxx>]

Matthew Dillon wrote:

> :Matthew Dillon wrote:
> :
> :>:I have not touched crt1 code to call tls initialization code yet,
> :>:since these tls code can not run on old kernel, it will result a
> :>:core file, I will delay touching crt1 code for three days, this
> :>:gives people some time to update kernel.
> :>:
> :>:David Xu
> :>
> :>    We have to make sure that any new libc works with older kernels, at 
> :>    least for programs which do not use the TLS support (i.e. non threaded
> :>    programs and old libc_r threaded programs).
> :>
> :>  
> :>
> :I was wrong,  it is the program has __thread in code will crash
> :on old kernel. :)
>
>    Well, if we are going to bump the major for most of our libraries I
>    guess we can also depend on __thread working for those libraries.
>
>  
Current it is not safe to make libraries to use __thread unless libc_r 
is fixed firstly to support
tls, libthread_xu is not a problem because it is designed from ground 
for that idea.
I am still working on rtld since some locking code is missing in 
previous patch.

>    I am still trying to figure out the best way to allow work to proceed
>    on libc v5 and other required bumps without impacting current users.
>
> 					-Matt
> 					Matthew Dillon 
> 					<dillon@xxxxxxxxxxxxx>
>
>
>