On Tue, 2007-11-20 at 12:49 -0800, Christoph Lameter wrote:
> On Tue, 20 Nov 2007, Mathieu Desnoyers wrote:
>
> > > Index: linux-2.6/fs/nfs/iostat.h
> > > ===================================================================
> > > --- linux-2.6.orig/fs/nfs/iostat.h 2007-11-15 21:17:24.391404458 -0800
> > > +++ linux-2.6/fs/nfs/iostat.h 2007-11-15 21:25:33.167654066 -0800
> > > @@ -123,7 +123,7 @@ static inline void nfs_inc_server_stats(
> > > int cpu;
> > >
> > > cpu = get_cpu();
> > > - iostats = per_cpu_ptr(server->io_stats, cpu);
> > > + iostats = CPU_PTR(server->io_stats, cpu);
> > > iostats->events[stat] ++;
> >
> > Is there a way to change this into a CPU_ADD ?
>
> Yes I must have missed that.
>
> Could be
>
> CPU_INC(server->io_stats->events[stat]);
>
> >
> > > put_cpu_no_resched();
> >
> > Why put_cpu_no_resched here ?
>
> We do not want to reschedule here? We may have already disabled interrupts
> or some such thing.
Some of these statistics are updated from inside a spinlocked
environment, hence the put_no_resched().
Trond
-
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]
