CPU topology info is necessary for power management analysis. For
example, to analysis the effect of Px state coordination, Cx
package/core coordination, the thread/core/socket topology
information is needed.
This patch add new command "get-cpu-topology" in xenpm to print the
CPU topology info:
Signed-off-by: Yu Ke <ke.yu@intel.com>
If you use -MMD -MF then the correct .o filename is written to the
.*.d file as the compiler driver arranges everything. This was done
in 19010:275abe1c5d24 for the hypervisor.
In this patch we do the same elsewhere in the xen-unstable tree,
particularly tools/. Specifically:
* Change tools/Rules.mk to add -MMD -MF ... to CFLAGS and set DEPS.
* Remove -Wp,-MD... from every other Makefile
* Remove setting of DEPS from every other Makefile
* Ensure that every Makefile says -include $(DEPS)
* Ensure that every Makefile's clean target removes $(DEPS)
Some Makefiles were already halfway there, but often for a different
variable name eg PROG_DEP. The variable name is now standardised in
Rules.mk as DEPS.
I have done a test build with this change, on Debian etch.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Two enhancements are made in this patch:
1. Make cpuid in command line optional: if user does not provide
cpuid, xenpm will operate on all the CPUs. this will easy the xenpm
usage. e.g. to set the cpufreq governor, user usually want to set the
governor on all CPUs. User can accomplish this easily with this
enhancement.
2. Add another option "xenpm start" to calculate the Cx/Px state
residency percentage during specified period. when user issue "xenpm
start", xenpm will start to record the Cx/Px state residency. when
user issue CTRL-C, xenpm will stop and show the Cx/Px state residency
and percentage of this period. this is helpful to measure the xenpm
effect for speficied workload.
Signed-off-by: Guanqun Lu <guanqun.lu@intel.com>Signed-off-by: Ke Yu <ke.yu@intel.com>
tune the parameters manually.
Now, xenpm can be invoked with the following options:
Usage:
xenpm get-cpuidle-states [cpuid]: list cpu idle information on
CPU cpuid or all CPUs.
xenpm get-cpufreq-states [cpuid]: list cpu frequency
information on CPU cpuid or all CPUs.
xenpm get-cpufreq-para [cpuid]: list cpu frequency information
on CPU cpuid or all CPUs.
xenpm set-scaling-maxfreq <cpuid> <HZ>: set max cpu frequency
<HZ> on CPU <cpuid>.
xenpm set-scaling-minfreq <cpuid> <HZ>: set min cpu frequency
<HZ> on CPU <cpuid>.
xenpm set-scaling-governor <cpuid> <name>: set scaling governor
on CPU <cpuid>.
xenpm set-scaling-speed <cpuid> <num>: set scaling speed on CPU
<cpuid>.
xenpm set-sampling-rate <cpuid> <num>: set sampling rate on CPU
<cpuid>.
xenpm set-up-threshold <cpuid> <num>: set up threshold on CPU
<cpuid>.
To ease the use of this tool, the shortcut option is supported,
i.e. `xenpm get-cpui' is equal to `xenpm get-cpuidle-states'.
Signed-off-by: Guanqun Lu <guanqun.lu@intel.com>
Attached patch allows to pass arguments to xenconsoled
via XENCONSOLED_TRACE env. variable analogous to xenstored.
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
The Xen tools contain a number of Python extensions written in C. The
C API to Python, used by these extensions, is not stable from one
version of Python to the next.
Our build system uses whatever version of Python is the default on the
build system at that time to build these extensions. However, the
actual scripts such as `xm' use #!/usr/bin/env python which uses
whichever version of Python is the default on the deployment system at
the time of invocation.
If for any reason these two versions of Python are not the same (eg,
because the system is built on one computer and executed on another,
or because the system's gains a more recent Python installation
alongside the original which changes the previous default), warnings
and failures occur.
In this patch I arrange for Python scripts to be installed via a
special wrapper around `install', which determines the build-time
Python version and path and then writes that into the #! line at the
point of `make install' (or `make dist'). (It can also be overridden
by setting PYTHON_PATH.)
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
lomount is a tool which reads and parses a partition table in a disk
image block device and then uses mount -o ...offset=... to mount it.
This is not an ideal approach. For example, if the intended
filesystem has corrupted metadata the kernel's filesystem driver may
start to write outside of the intended region. This might even be
exploitable in some perverse circumstances.
Nowadays people wanting to do this should use kpartx, which uses
devmapper to create appropriate range mappings. So lomount should be
disabled.
miniterm may well be useful but it is a clone-and-hack of an upstream
project and is currently built but not installed by default, partly
because it doesn't make sense to install on the dom0 which it might be
trying to debug.
It is probably useful to retain these two programs in the source tree
but IMO they should no longer be built by default.
The attached patch does these things:
* CONFIG_LOMOUNT and CONFIG_MINITERM in Config.mk
can enable and disable these programs
* They are disabled by default
* If CONFIG_MINITERM=y it is still built but not installed.
make -C tools/misc/miniterm install will install it.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Xen cannot work when xenstored's tdb is corrupt. When that happens
somehow (and we've seen it happen), even reboot doesn't recover from
it. It could: there is no state in tdb that needs to be persisted
across reboots.
This patch arranges that tdb is removed before xenstored is started,
provided it doesn't already run. This is safe, because:
* xenstored cannot be restarted. If it dies, Xen's screwed until
reboot.
* /usr/sbin/xend always starts xenstored anyway.
* xenstored locks its pid-file (see write_pidfile() in
tools/xenstore/xenstored_core.c), and refuses to start when it
can't.
* My patch makes /usr/sbin/xend remove tdb iff it can lock the
pid-file. In other words, it removes tdb only when xenstored is not
running, and locks it out until it is done.
Bonus fix: it also removes stale copies of the tdb xenstored tends
to leave behind when it exits uncleanly.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
I'm suggesting this change to make another tiny step towards the
ability to run the tools e.g. out of the build tree (so that multiple
different Xen versions can co-exist without the requirement to
re-install the respective version with each boot).
Signed-off-by: Jan Beulich <jbeulich@novell.com>
The only non-obvious change here is in tools/xenfb/Makefile. This now picks up
the headers it requires via the copy in tools/libxc.
Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
It predates the current shadow architecture and only performs an explicitly
invalid shadow operation (on itself).
Signed-off-by: Tim Deegan <Tim.Deegan@xensource.com>
advantage that the temporary path manipulation cannot affect the main script,
and that it can be shared with other programs, such as xm-test.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
- xend forwards console traffic between the running bootloader and a pty
which it writes to the store so the xenconsole client can see it.
- the xenconsole client handles the domain's console pty changing.
- xm create no longer runs the bootloader.
- pygrub gets '-i' option to explicitly request an interactive session.
- xend unlocks the domain list during bootloading so that "xm console"
can see the domain and attach to its console pty.
Signed-off-by: Tim Deegan <Tim.Deegan@xensource.com>
On solaris mlock requires a page aligned address and mlock doesn't
ensure the pages won't minor page fault.
Signed-off-by: Mark Johnson <mark.johnson@sun.com>
be under /var/log/xen instead of under /var/log directly. This has
the advantage of cleaning things up a little and also can make it
easier to restrict the permissions needed by xend.
Signed-off-by: Jeremy Katz <katzj@redhat.com>
Keir Fraser
Keir Fraser
kfraser@localhost.localdomain
Ian Campbell
Tim Deegan
Ewan Mellor
kaf24@localhost.localdomain
kaf24@firebug.cl.cam.ac.uk