Messages in this thread | | | Subject | Re: [patch] [sched] yield speedup, 2.5.3-pre5 | Date | Tue, 29 Jan 2002 17:10:57 +0100 | From | Horst von Brand <> |
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Ingo Molnar <mingo@elte.hu> said: > On Mon, 28 Jan 2002, Martin Josefsson wrote: > > > > - spin_unlock_irq(&rq->lock); > > > + spin_unlock(&rq->lock); > > > I'm not an spinlock expert but shouldn't you use spin_unlock_irq() > > when it was locked with spin_lock_irq() ? > > normally yes, but in this case it's an optimization: schedule() will > disable interrupts within a few cycles, so there is no point in enabling > irqs for a short amount of time.
And a short comment in the code? -- Horst von Brand http://counter.li.org # 22616 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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