Re: proc fs and shared pids

Bryn Paul Arnold Jones (
Wed, 31 Jul 1996 19:58:29 +0100 (BST)

On Wed, 31 Jul 1996, Linus Torvalds wrote:

> On Mon, 29 Jul 1996, Michiel Boland wrote:
> >
> > How is the proc FS going to handle tasks that share the same PID?
> Badly.
> Linus
> (Seriously, the CLONE_PID option needs to be cleaned up a bit, and I
> suspect I'll make a 16-bit "thread ID" in the high bits of the pid or
> something like that)
Hmm, we could have something like PID:TID, where TID is 0 for all "normal"
processes, and for the first thread (hmm, procfs could omit it for TID=0).
It'll also assumed to be 0 if it's not given in a syscall (or if done
right, it'll be implied as 0 from what you say at the end of your mail).


PGP key pass phrase forgotten,   \ Overload -- core meltdown sequence 
again :(                          |            initiated.
                                 / This space is intentionally left   
                                |  blank, apart from this text ;-)