Re: [PATCH] processes with shared vm

[Dave McCracken <dmccr@us.ibm.com>]

--On Friday, August 17, 2001 22:55:37 +0200 Andi Kleen <ak@suse.de> wrote:

> Even with a tgid you would need some way to avoid its counter wrapping
> and getting reused.

While in theory the pid that is used for tgid should never die while the 
thread group exists, this case needs to be handled for thread groups in 
general.  The number shouldn't be re-used for a pid as long as it's in use 
as a tgid.

> Also gtop should display correct results even with the programs
> that don't use CLONE_THREAD.

Are there any programs that use CLONE_VM and not CLONE_THREAD?

Actually I think we should make tgid visible in /proc in general because 
it's a useful thing to know, whether it's the right mechanism for gtop or 
not.  I'll work up a patch.

Dave McCracken

======================================================================
Dave McCracken          IBM Linux Base Kernel Team      1-512-838-3059
dmccr@us.ibm.com                                        T/L   678-3059