Re: threads/1576: Linux 2.6 thread status path in /proc has changed

[George J Karabin <gkarabin at ti dot com>]

Yes, that's the change I was having problems with - thanks for the heads 
up. Thanks for the info on ptid_get_pid - that's not obvious from 
looking at the code - the creation of the ptids themselves is a little 
hard to trace, and I didn't go back that far.

> From: Daniel Jacobowitz <drow@false.org>
> To: gkarabin@pobox.com
> Cc: gdb-gnats@sources.redhat.com
> Subject: Re: threads/1576: Linux 2.6 thread status path in /proc has changed
> Date: Fri, 27 Feb 2004 12:24:45 -0500
>
> On Fri, Feb 27, 2004 at 07:51:28AM -0000, gkarabin@pobox.com wrote:
> > Fedora Core 2 test1 + development
>
> What kernel version?
>
> > >Description:
> > Linux kernel 2.6 no longer stores all LWP information directly under /proc/<lwp>. Instead, it's stored under /proc/<pid>/task/<lwp>. This causes problems in linux-lwp.c, when it tries to fetch lwp info from the old location.
>
> If you're reporting this because of a kernel newer than 2.6.3-rc3, the
> problematic change is being reverted.  Peter Chubb and Andrew Morton
> discussed this on lkml yesterday.
>
> GDB's ptid_get_pid is not always the process ID of the thread group
> leader; there is no easy way to find the thread group leader.  So we
> can't easily use the task subdirectory.
>
> --
> Daniel Jacobowitz
> MontaVista Software                         Debian GNU/Linux Developer
>