From: Arnd Bergmann <arnd@arndb.de>
Date: Thu, 5 Jan 2006 14:05:29 +0000 (+0000)
Subject: [PATCH] spufs: set irq affinity for running threads
X-Git-Tag: v2.6.16-rc1~666^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2fb9d2063626374dd8a2514b3a730facac8235d8;p=pandora-kernel.git

[PATCH] spufs: set irq affinity for running threads

For far, all SPU triggered interrupts always end up on
the first SMT thread, which is a bad solution.

This patch implements setting the affinity to the
CPU that was running last when entering execution on
an SPU. This should result in a significant reduction
in IPI calls and better cache locality for SPE thread
specific data.

Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

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