Messages in this thread | | | Date | Tue, 25 Mar 2003 21:04:49 -0800 | From | Bryan Rittmeyer <> | Subject | Re: [patch] oprofile + ppc750cx perfmon |
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On Tue, Mar 25, 2003 at 10:45:02AM +0100, Benjamin Herrenschmidt wrote: > I also think we could actually be smarter and only > soft-disable IRQs with a flag in the descriptor, and hard disable > them if and only if they actually occur while disabled.
yup. minimizing open_pic I/O could be a big win. the fact that the PIC shows up _way_ ahead of the network driver and stack is pretty freakish compared to a profile on x86 using io-apic (the legacy x86 pic has similar but less severe issues as open_pic).
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