From: Christoph Hellwig <hch@lst.de>
Date: Tue, 29 Apr 2008 07:08:38 +0000 (+1000)
Subject: [POWERPC] spufs: add context switch notification log
X-Git-Tag: v2.6.26-rc1~108^2~2^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5158e9b5218bd3799c9fa8c401ad24d7f0c0a0a1;p=pandora-kernel.git

[POWERPC] spufs: add context switch notification log

There are userspace instrumentation tools that need to monitor spu
context switches. This patch adds a new file called 'switch_log' to
each spufs context directory that can be used to monitor the context
switches.

Context switch in/out and exit from spu_run are monitored after the
file was first opened and can be read from it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
---

Reading git-diff-tree failed