Re: [PATCH] processes with shared vm

Dave McCracken (dmccr@us.ibm.com)
Fri, 17 Aug 2001 09:39:02 -0500


--On Friday, August 17, 2001 14:30:28 +0000 Mark Hahn
<hahn@physics.mcmaster.ca> wrote:

> from a quick glance, there is no tgid, and deliberately so:
> proc.thread_group is a list of siblings, no? siblings that
> normally share their struct mm.

There is in fact a tgid in the task_struct. Its value is the pid of the
task that first called clone() with CLONE_THREAD set. And in fact the
getpid() system call actually returns tgid instead of pid. It seems to me
only reasonable to include this in the information available via /proc.

Dave McCracken

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

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