cvs commit: src/sys/kern sys_process.c syscalls.master

[Ken Smith]

On Mon, Mar 15, 2004 at 08:08:53PM +0100, Wilko Bulte wrote:
> On Mon, Mar 15, 2004 at 10:48:28AM -0800, John Baldwin wrote:
> > jhb         2004/03/15 10:48:28 PST
> > 
> >   FreeBSD src repository
> > 
> >   Modified files:
> >     sys/kern             sys_process.c syscalls.master 
> >   Log:
> >   Drop the proc lock around calls to the MD functions ptrace_single_step(),
> >   ptrace_set_pc(), and cpu_ptrace() so that those functions are free to
> >   acquire Giant, sleep, etc.  We already do a PHOLD/PRELE around them so
> >   that it is safe to sleep inside of these routines if necessary.  This
> >   allows ptrace() to be marked MP safe again as it no longer triggers lock
> >   order reversals on Alpha.
> 
> Someone with a SMP alpha box might also want to give this a spin I suppose.
> 

beast (alpha ref machine in the cluster) has dual processors, if something
special needs to be done to test this we could arrange something.

-- 
						Ken Smith
- From there to here, from here to      |       kensmith at cse.buffalo.edu
  there, funny things are everywhere.   |
                      - Theodore Geisel |