Displaying 6 results from an estimated 6 matches for "aperf".
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2012 May 22
20
[PATCH] RFC: Linux: disable APERF/MPERF feature in PV kernels
Hi,
while testing some APERF/MPERF semantics I discovered that this feature
is enabled in Xen Dom0, but is not reliable.
The Linux kernel''s scheduler uses this feature if it sees the CPUID bit,
leading to costly RDMSR traps (a few 100,000s during a kernel compile)
and bogus values due to VCPU migration during the m...
2017 Apr 18
1
[PATCH v3 00/11] x86: xen cpuid() cleanup
...Anvin" <hpa at zytor.com>
Cc: x86 at kernel.org
Cc: virtualization at lists.linux-foundation.org
Juergen Gross (11):
xen: set cpu capabilities from xen_start_kernel()
x86/xen: don't indicate DCA support in pv domains
x86/xen: use capabilities instead of fake cpuid values for aperf
x86/xen: use capabilities instead of fake cpuid values for mtrr
x86/xen: use capabilities instead of fake cpuid values for acc
x86/xen: use capabilities instead of fake cpuid values for acpi
x86/xen: use capabilities instead of fake cpuid values for mwait
x86/xen: use capabilities instead...
2017 Apr 18
1
[PATCH v3 00/11] x86: xen cpuid() cleanup
...Anvin" <hpa at zytor.com>
Cc: x86 at kernel.org
Cc: virtualization at lists.linux-foundation.org
Juergen Gross (11):
xen: set cpu capabilities from xen_start_kernel()
x86/xen: don't indicate DCA support in pv domains
x86/xen: use capabilities instead of fake cpuid values for aperf
x86/xen: use capabilities instead of fake cpuid values for mtrr
x86/xen: use capabilities instead of fake cpuid values for acc
x86/xen: use capabilities instead of fake cpuid values for acpi
x86/xen: use capabilities instead of fake cpuid values for mwait
x86/xen: use capabilities instead...
2017 Apr 13
3
[PATCH v2 00/11] x86: xen cpuid() cleanup
...Anvin" <hpa at zytor.com>
Cc: x86 at kernel.org
Cc: virtualization at lists.linux-foundation.org
Juergen Gross (11):
xen: set cpu capabilities from xen_start_kernel()
x86/xen: don't indicate DCA support in pv domains
x86/xen: use capabilities instead of fake cpuid values for aperf
x86/xen: use capabilities instead of fake cpuid values for mtrr
x86/xen: use capabilities instead of fake cpuid values for acc
x86/xen: use capabilities instead of fake cpuid values for acpi
x86/xen: use capabilities instead of fake cpuid values for mwait
x86/xen: use capabilities instead...
2017 Apr 13
3
[PATCH v2 00/11] x86: xen cpuid() cleanup
...Anvin" <hpa at zytor.com>
Cc: x86 at kernel.org
Cc: virtualization at lists.linux-foundation.org
Juergen Gross (11):
xen: set cpu capabilities from xen_start_kernel()
x86/xen: don't indicate DCA support in pv domains
x86/xen: use capabilities instead of fake cpuid values for aperf
x86/xen: use capabilities instead of fake cpuid values for mtrr
x86/xen: use capabilities instead of fake cpuid values for acc
x86/xen: use capabilities instead of fake cpuid values for acpi
x86/xen: use capabilities instead of fake cpuid values for mwait
x86/xen: use capabilities instead...
2012 Dec 25
7
Using collectd: CPUFreq in dom0
Hello,
I''ve tried to get the CPUFreq plugin of collectd running in dom0.
But I mentioned that it isn''t so easy to get a file in sysfs on the
rigth place.
I know that the value has to come from hypervisor and I''ve seen the code
in xenpm.
The only value I need is
"/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq" which would
create cpufreq.c.
Can anyone