[Xen-devel] [PATCH 1 of 6] linux-xencommons: Load xen-acpi-processor

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

# HG changeset patch
# User Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
# Date 1332608051 14400
# Node ID 708bf485e5d4baaf1c6272bd4fb1895a3c355d3e
# Parent  b7a1794aed59fd2b0816b3bbcf97690c0241814f
linux-xencommons: Load xen-acpi-processor

Upstream the "xen/acpi-processor: C and P-state driver that
uploads said data to hypervisor." takes care of uploading power information
information that normally a cpu frequency scaling driver would using
in the initial domain. We want the hypervisor to take that data and
make good usage of it.

Fortunatly for us we do not have to worry about the native cpu frequency
scaling drivers being loaded first, as the upstream commit:
"xen/cpufreq: Disable the cpu frequency scaling drivers from loading."
takes care of that. Meaning we can load the xen-acpi-processor at any time.

By default that driver is built as a module - and since we are
the only user of it - we should load it.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

diff -r b7a1794aed59 -r 708bf485e5d4 tools/hotplug/Linux/init.d/xencommons
--- a/tools/hotplug/Linux/init.d/xencommons     Fri Mar 23 13:45:28 2012 +0000
+++ b/tools/hotplug/Linux/init.d/xencommons     Sat Mar 24 12:54:11 2012 -0400
@@ -58,6 +58,7 @@ do_start () {
        modprobe xen-gntdev 2>/dev/null
        modprobe evtchn 2>/dev/null
        modprobe gntdev 2>/dev/null
+       modprobe xen-acpi-processor 2>/dev/null
        mkdir -p /var/run/xen
 
        if ! `xenstore-read -s / >/dev/null 2>&1`



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