Messages in this thread | | | Date | Mon, 24 May 2004 10:46:41 -0700 (PDT) | From | Davide Libenzi <> | Subject | Re: scheduler: IRQs disabled over context switches |
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On Mon, 24 May 2004, Davide Libenzi wrote:
> On Mon, 24 May 2004, Ingo Molnar wrote: > > > > > * Davide Libenzi <davidel@xmailserver.org> 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
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