Displaying 5 results from an estimated 5 matches for "coord_type".
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2008 Oct 22
24
Problems with enabling hypervisor C and P-state control
Hi,
Is there any documentation on enabling hypervisor support for both C
and P-state control?
On xen-unstable and linux-2.6.18-xen.hg, if I enable cpuidle=1 on the
xen command line and then run xenpm, I will get output for C-states
(shown below) but it complains that "Xen cpufreq is not enabled!"
cpu id : 0
total C-states : 2
idle time(ms) : 73264
C0
2011 Oct 20
0
[PATCH 07/12] cpufreq: allocate CPU masks dynamically
...list_add(&cpufreq_dom->node, &cpufreq_dom_list_head);
} else {
/* domain sanity check under whatever coordination type */
- firstcpu = first_cpu(cpufreq_dom->map);
+ firstcpu = cpumask_first(cpufreq_dom->map);
if ((perf->domain_info.coord_type !=
processor_pminfo[firstcpu]->perf.domain_info.coord_type) ||
(perf->domain_info.num_processors !=
@@ -181,11 +186,18 @@ int cpufreq_add_cpu(unsigned int cpu)
goto err0;
}
+ if (!zalloc_cpumask_var(&policy->cpus)) {
+...
2011 Nov 30
36
[RFC PATCH] Exporting ACPI Pxx/Cxx states to other kernel subsystems (v1).
Hello,
The following patches are a solution to a problem we have encountered
when using the Xen hypervisor:
- Need Pxx/Cxx states to save on power consumption when using Xen (we
do want those datacenters to consume less power!),
- Also need to figure out the Turbo mode so that the scheduler can properly
boost a core for CPU bound guests.
In essence the Xen hypervisor requires that
2012 Jul 22
20
Kernel crash with acpi_processor, cpu_idle and intel_idle =y
Hi everyone,
When I set CONFIG_ACPI_PROCESSOR, CONFIG_CPU_IDLE and CONFIG_INTEL_IDLE
to y then I cannot boot Xen; there is a crash. If I turn
CONFIG_INTEL_IDLE off then the boot goes well and, after dom0 has
booted, xenpm works and gives some sane output, see below. I have
tested this with kernels 3.2 to 3.4.6.
Is it impossible to use INTEL_IDLE with Xen? If this is a known issue
then maybe
2012 Jul 22
20
Kernel crash with acpi_processor, cpu_idle and intel_idle =y
Hi everyone,
When I set CONFIG_ACPI_PROCESSOR, CONFIG_CPU_IDLE and CONFIG_INTEL_IDLE
to y then I cannot boot Xen; there is a crash. If I turn
CONFIG_INTEL_IDLE off then the boot goes well and, after dom0 has
booted, xenpm works and gives some sane output, see below. I have
tested this with kernels 3.2 to 3.4.6.
Is it impossible to use INTEL_IDLE with Xen? If this is a known issue
then maybe