similar to: [PATCH] [IA64] Compilation fix to cpufreq stuff.

Dom0 uses this hypercall to pass ACPI information to Xen. It is not very uncommon for more cpus to be listed in the ACPI tables than are present on the system, particularly on systems with a common BIOS for a 2 and 4 socket server varients. As Dom0 does not control the number of entries in the ACPI tables, and is required to pass everything it finds to Xen, reduce the ERR to an INFO.

Another bundle of issues from Coverity triage. The first one is in x86/mm, and looks scarier than it is. The others are all in xen/drivers and AFAICT are pretty minor. Cheers, Tim.

From: Carsten Otte <cotte at de.ibm.com> From: Christian Borntraeger <borntraeger at de.ibm.com> This patch introduces in-kernel handling of some intercepts for privileged instructions: handle_set_prefix() sets the prefix register of the local cpu handle_store_prefix() stores the content of the prefix register to memory handle_store_cpu_address() stores the cpu number of

Currently cpufreq and xenpm are out of sync. Fix cpufreq reporting of if turbo mode is enabled or not. Fix xenpm to not decode for tristate, but a boolean. Signed-off-by: Jacob Shin <jacob.shin@amd.com> --- tools/misc/xenpm.c | 14 +++----------- xen/drivers/cpufreq/utility.c | 2 +- 2 files changed, 4 insertions(+), 12 deletions(-) diff --git a/tools/misc/xenpm.c

.. snip.. >> Both of them (acpi-cpufreq.c and powernow-k8.c) have a symbol >> dependency on drivers/acpi/processor.c > > But them being ''m'' or ''y'' shouldn''t matter in the end. I thought you were saying it matters - as it should be done around the same time as cpufreq drivers were loaded? .. snip.. >> For a), this would mean some

[I sent this to the RHEL4 list - but maybe someone on this list knows more] I have a number of dual CPU and dual CPU/dual core Opteron systems that are used as compute servers. In an effort to reduce power consumption and reduce heat output, I would like to make use of the PowerNow! capabilities to clock back the CPUs when the machines are idle. These machines are running a 2.6.9-42 RHEL4 kernel

Hello ! Does anybody know how to build and use cpufreq support that should be in 3.2 since -unstable time ? Bye -- __________________________________________________ Ralf Schenk fon (02 41) 9 91 21-0 fax (02 41) 9 91 21-59 rs@databay.de Databay AG Hüttenstraße 7 D-52068 Aachen www.databay.de Vorstand: Jens Conze, Ralf Schenk, Aresch Yavari Aufsichtsratvorsitzender: Ansgar Vögeli

... rather than after. Signed-off-by: Jan Beulich <jbeulich@novell.com> --- 2010-06-15.orig/xen/arch/x86/acpi/cpufreq/cpufreq.c 2010-07-06 16:08:59.000000000 +0200 +++ 2010-06-15/xen/arch/x86/acpi/cpufreq/cpufreq.c 2010-07-06 16:11:48.000000000 +0200 @@ -210,9 +210,11 @@ static u32 get_cur_val(cpumask_t mask) if (!cpu_isset(cpu, mask)) cpu = first_cpu(mask); - policy =

Back in c/s 18950 the default cpufreq governor was set to userspace (it had previously been performance). However, since there is no supplied userspace program or script that will change the frequency this is at best a no-op. Worse, on some hardware with some BIOS revisions, this actually sets the CPUs running at their lowest frequency rather than their highest and there is a corresponding

Cpufreq domain structure update from array to link list Current cpufreq domain is an array cpufreq_dom_map[NR_CPUS]. However, according to Jan Beulich''s suggestion, domain number may be sparse or bigger than NR_CPUS. This patch update cpufreq domain structure from array to link list, adapt sparse or big domain number. Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>

Set userspace governor as default, which stays same effect as when cpufreq in xen is not enabled. As a result, enable cpufreq in xen by default to avoid reboot to activate cpufreq. Now it''s always on but w/o performance impact if user doesn''t tempt to change governor. We also add some warning info for debug. Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>

Cpufreq: prevent negative px resident time, add spinlock to avoid race Due to NOW() value may drift between different cpus, we add protection to prevent negative px resident time. Due to both cpufreq logic and xenpm may race accessing cpufreq_statistic_data, we add spinlock to avoid race. Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com> _______________________________________________

Hi all I there any current repository on cpufreq scaling and ACPI info? I''ve seen some discussion on the list archive but not any resolution. Liam _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Add cpufreq governors: performance, powersave, userspace This patch add 3 more governors beside original running ondemand cpufreq governor. performance governor is with best performance, keeping cpu always running at highest freq; powersave governor is with best power save effect, keeping cpu always running at lowest freq; userspace governor provide user setting freq ability; Signed-off-by: Liu,

These two patches are pulled from linux kernel upstream, to allow ACPICA corretly parse cpufreq info from some non-standard BIOS. We find current cpufreq in Xen does not work correctly in some machine, and these two patch fix this issue. commit 24058054d781934df526be114c612cf2b29cf4e7 Author: Bob Moore <robert.moore@intel.com> Date: Fri Feb 2 19:48:18 2007 +0300 ACPICA: Handle

Hello, I want to use DVFS in xen. I use Fedora 8. The server supports DVFS when it boots from Fedora 8 without xen. Then, I installed Xen 3.4 from source and boots successfully. But the cpufreq directory is gone in the system. I cannnot use DVFS. If I run xenpm get-cpufreq-xxx, it always reports "failed to get xxx". I have googled a lot, but still cannot find the solution. The CPU is

Hi Konrad, The devel/acpi-cpufreq.v4 branch doesn''t seem to be merged into your linux-next branch yet. Is it still targeted for 3.3 ? I have been running your testing branch with linus his tree pulled on top of that, and it ran stable for me. Thx for all the hard work upstreaming everything ! -- Sander

Hi, I am trying to use the cpufreq driver and was unable to find the same on my xen kernel. I am currently running the folloing kernel: # uname -a Linux mbr-Dom0-3 2.6.18.8-xen #1 SMP Wed Jan 28 10:27:04 IST 2009 x86_64 x86_64 x86_64 GNU/Linux I read in certain places that some versions of Xen donot support cpufreq. But the information was not too clear. Could someone kindly tell me if cpufreq

Hi, I noticed that the fan of my centrino is very often running since I use Xen (the load is very low still). Also the cpufreq is always at 600MHz (the max is 1500MHz), regardless of what of what heavy computations I do (e.g. calculating md5sums). I heard that it is not possible to run a cpufreq scheduler like powernowd or cpufreqd, but would it be possible to set the cpu frequency at least

X86: Fix cpufreq _psd HW_ALL coordination bug Currently xen cpufreq has a bug when handleing _psd HW_ALL, which will result in system broken when _psd HW_ALL. This patch fix this bug by handling _psd HW_ALL in same way as SW_ALL coordiantion, for the seek of safety. Signed-off-by: Liu Jinsong <jinsong.liu@intel.com> _______________________________________________ Xen-devel mailing list