cvs commit: src/sys/kern sys_process.c syscalls.master
kensmith at cse.Buffalo.EDU
Mon Mar 15 11:21:42 PST 2004
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.
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