Getting a backtrace of other thread

Question

In Linux, to get a backtrace you can use backtrace() library call, but it only returns backtrace of current thread. Is there any way to get a backtrace of some other thread, assuming I know it's TID (or pthread_t) and I can guarantee it sleeps?

It seems that libunwind (http://www.nongnu.org/libunwind/) project can help. The problem is that it is not supported by CentOS, so I prefer not to use it.

Any other ideas? Thanks.