From: Will Schmidt <will_schmidt@vnet.ibm.com>
Date: Tue, 28 Sep 2010 15:33:12 +0000 (+0000)
Subject: powerpc/pseries: Add kernel parameter to disable batched hcalls
X-Git-Tag: v2.6.38-rc1~405^2~46
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4e89a2d8e2d5ab33d73b76f16c10fdf515faabef;p=pandora-kernel.git

powerpc/pseries: Add kernel parameter to disable batched hcalls

This introduces a pair of kernel parameters that can be used to disable
the MULTITCE and BULK_REMOVE h-calls.

By default, those hcalls are enabled, active, and good for throughput
and performance.  The ability to disable them will be useful for some of
the PREEMPT_RT related investigation and work occurring on Power.

Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com>
cc: Olof Johansson <olof@lixom.net>
cc: Anton Blanchard <anton@samba.org>
cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

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