On Tue, May 28, 2013 at 03:30:35PM -0400, Sasha Levin wrote:
> On 05/22/2013 05:17 AM, Peter Zijlstra wrote:
> > On Wed, May 15, 2013 at 11:15:34PM -0400, Sasha Levin wrote:
> >> --- /dev/null
> >> +++ b/tools/lib/lockdep/uinclude/linux/lockdep.h
> >> @@ -0,0 +1,55 @@
> >> +#ifndef _LIBLOCKDEP_LOCKDEP_H_
> >> +#define _LIBLOCKDEP_LOCKDEP_H_
> >> +
> >> +#include <sys/prctl.h>
> >> +#include <sys/syscall.h>
> >> +#include <string.h>
> >> +#include <limits.h>
> >> +#include <linux/utsname.h>
> >> +
> >> +
> >> +#define MAX_LOCK_DEPTH 2000UL
> >> +
> >> +#include "../../../include/linux/lockdep.h"
> >> +
> >> +struct task_struct {
> >> + u64 curr_chain_key;
> >> + int lockdep_depth;
> >> + unsigned int lockdep_recursion;
> >> + struct held_lock held_locks[MAX_LOCK_DEPTH];
> >> + gfp_t lockdep_reclaim_gfp;
> >> + int pid;
> >> + char comm[17];
> >> +};
> >
> > Whee that's a totally awesome MAX_LOCK_DEPTH.. :-)
> >
> > Should we not also extend the other static allocations, or have you not
> > yet ran into them? I would suspect that without proper classes we're
> > bound to run out of class and link storage quite quickly.
>
> I've changed MAX_LOCK_DEPTH just because I've actually hit it. I haven't
> got around to hitting anything else, but I guess we could preemptively
> send them hight.
>
> What values would make sense here?
Dunno, I suppose we can deal with that when we hit them ;-)
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