This is a nice addition, but just FYI there are SGI systems that have
PCI busses attached to more than one node. I guess for now we can just
round-robin through the attached nodes for the return value.
Thanks,
Jesse
On Wed, Oct 30, 2002 at 03:42:45PM -0800, Matthew Dobson wrote:
> Linus,
> Here's a patch that adds PCI busses to the list of basic topology
> elements (incl. CPUs, MemBlks, & Nodes).
>
> pcibus_to_node-2.5.44.patch
>
> This patch adds a new topology macro: pcibus_to_node(). This will be
> useful to allow I/O bound processes to bind themselves to CPUs/Nodes
> close to the PCI busses they are communicating over.
>
> 1) Adds pcibus_to_node() macro to asm-generic/topology.h
> 2) Makes small modifications to NUMA-Q PCI code, mostly modifying macros.
> 3) Uses the macros from #2 to implement pcibus_to_node() in
> asm-i386/topology.h
>
> [mcd@arrakis patches]$ diffstat api_patches/pcibus_to_node-2.5.44.patch
> arch/i386/pci/numa.c | 33 +++++++++++++++------------------
> include/asm-generic/topology.h | 3 +++
> include/asm-i386/topology.h | 3 +++
> 3 files changed, 21 insertions(+), 18 deletions(-)
>
> Cheers!
>
> -Matt
>
> -
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