]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
[POWERPC] spufs: try to route SPU interrupts to local node
authorLuke Browning <lukebr@linux.vnet.ibm.com>
Mon, 28 Apr 2008 04:32:34 +0000 (14:32 +1000)
committerJeremy Kerr <jk@ozlabs.org>
Mon, 5 May 2008 03:33:43 +0000 (13:33 +1000)
commit7a2142002f29a7b398c49da9bdec712dc57087c7
treebd15498cbf76cabda2d42868ffc6936738d5c578
parent093c16bf9b107433643cbf0843ca7808df90823b
[POWERPC] spufs: try to route SPU interrupts to local node

Currently, we re-route SPU interrupts to the current cpu, which may be
on a remote node. In the case of time slicing, all spu interrupts will
end up routed to the same cpu, where the spusched_tick occurs.

This change routes mfc interrupts to the cpu where the controlling
thread last ran, provided that cpu is on the same node as the spu
(otherwise don't reroute interrupts).

This should improve performance and provide a more predictable
environment for processing spu exceptions. In the past we have seen
concurrent delivery of spu exceptions to two cpus. This eliminates that
concern.

Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
arch/powerpc/platforms/cell/spu_priv1_mmio.c
arch/powerpc/platforms/cell/spufs/sched.c
arch/powerpc/platforms/cell/spufs/spufs.h
arch/powerpc/platforms/cell/spufs/switch.c