RE: lockdep oddity

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



We are just trading accuracy for speed here.

> On Wed, Sep 06, 2006 at 12:47:24AM -0700, Andrew Morton wrote:
> > On Wed, 6 Sep 2006 09:20:43 +0200
> > Heiko Carstens <[email protected]> wrote:
> > 
> > > I'm also wondering why the profile
> > > patch contains this:
> > > 
> > > +       if (ret)
> > > +               likeliness->count[1]++;
> > > +       else
> > > +               likeliness->count[0]++;
> > > 
> > > This isn't smp safe. Is that on purpose or a bug?
> > 
> > Purposeful.   This is called from all contexts, including NMI.
> 
> Why not use atomic_inc then? Or is there some architecture 
> dependent limitation that it can't be done in every context?

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux