Re: scheduler: IRQs disabled over context switches

[Davide Libenzi]

On Mon, 24 May 2004, Davide Libenzi wrote:

> On Mon, 24 May 2004, Ingo Molnar wrote:
> 
> > 
> > * Davide Libenzi <davidel@xxxxxxxxxxxxxxx> wrote:
> > 
> > > We used to do it in 2.4. What changed to make it fragile? The
> > > threading (TLS) thing?
> > 
> > it _should_ work, but in the past we only had trouble from such changes
> > (at least in the O(1) tree of scheduling - 2.4 scheduler is OK.). We
> > could try the patch below. It certainly boots on SMP x86. But it causes
> > a 3.5% slowdown in lat_ctx so i'd not do it unless there are some really
> > good reasons.
> 
> IMO it is fine, as long as it works with IRQ disabled. There are archs 

s/disabled/enabled/



- Davide

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