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Re: [Xen-devel] [RFC][PATCH] domheap optimization for NUMA
| To: | "Zhai, Edwin" <edwin.zhai@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [RFC][PATCH] domheap optimization for NUMA |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Wed, 02 Apr 2008 14:27:55 +0100 |
| Cc: | ryanh@xxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Wed, 02 Apr 2008 06:29:18 -0700 |
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| Thread-topic: | [Xen-devel] [RFC][PATCH] domheap optimization for NUMA |
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On 2/4/08 14:06, "Zhai, Edwin" <edwin.zhai@xxxxxxxxx> wrote: > The issue is alloc_domheap_pages take domain* as parameter to indicate if need > account pages for the domain, sometimes it's NULL. In this case, we can't > deduct > the node from domain. I believe it's why use cpu here as getting cpuid is > easier. Yes, but it's a bad interface, particularlty when the function is called alloc_domheap_pages_on_node(). Pass in a nodeid. Write a helper function to work out the nodeid from the domain*. > Another option, always use domain* to locate node(not allowed NULL) and add a > new flag _MEMF_assign to indicate the assignment, which changes the interface > and is invasive. Yes, that's a bad idea. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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