(currently in a
development branch of the userspace RCU git tree : urcu/ht-shrink, not
yet in master) is suitable for use in the Linux kernel too.
Best regards,
Mathieu
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Mathieu Desnoyers
Operating System Efficiency RD Consultant
EfficiOS Inc.
http://www.efficios.com
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documentation in the code explaining how
I deal with search/prev/next reads vs concurrent writers. Feedback about
the API would be very welcome! It's all available in the urcu rbtree2
branch.
Thanks!
Mathieu
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Mathieu Desnoyers
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EfficiOS Inc.
http
* Paul E. McKenney (paul...@linux.vnet.ibm.com) wrote:
On Sun, May 29, 2011 at 01:01:04PM -0400, Mathieu Desnoyers wrote:
* Mathieu Desnoyers (mathieu.desnoy...@efficios.com) wrote:
* Sasha Levin (levinsasha...@gmail.com) wrote:
[...]
Hi Mathieu!
In tools/kvm/ we use a rb-tree
* Sasha Levin (levinsasha...@gmail.com) wrote:
On Sun, 2011-05-29 at 22:54 -0400, Mathieu Desnoyers wrote:
Please note that what I currently have is a normal rbtree, not an
interval rbtree. Can you elaborate on your use-case so I can try to
figure out how we could augment it to support
* Sasha Levin (levinsasha...@gmail.com) wrote:
On Sun, 2011-05-29 at 22:54 -0400, Mathieu Desnoyers wrote:
Please note that what I currently have is a normal rbtree, not an
interval rbtree. Can you elaborate on your use-case so I can try to
figure out how we could augment it to support
* Mathieu Desnoyers (mathieu.desnoy...@efficios.com) wrote:
* Sasha Levin (levinsasha...@gmail.com) wrote:
On Sun, 2011-05-29 at 22:54 -0400, Mathieu Desnoyers wrote:
Please note that what I currently have is a normal rbtree, not an
interval rbtree. Can you elaborate on your use-case so I
* Sasha Levin (levinsasha...@gmail.com) wrote:
On Mon, 2011-05-30 at 13:38 -0400, Mathieu Desnoyers wrote:
* Sasha Levin (levinsasha...@gmail.com) wrote:
On Sun, 2011-05-29 at 22:54 -0400, Mathieu Desnoyers wrote:
Please note that what I currently have is a normal rbtree
* Mathieu Desnoyers (mathieu.desnoy...@efficios.com) wrote:
* Sasha Levin (levinsasha...@gmail.com) wrote:
[...]
Hi Mathieu!
In tools/kvm/ we use a rb-tree (same one used by the kernel) with the
augmentation feature to support an interval rb-tree - which means that
every update
* Sasha Levin (levinsasha...@gmail.com) wrote:
On Sun, 2011-05-29 at 13:01 -0400, Mathieu Desnoyers wrote:
* Mathieu Desnoyers (mathieu.desnoy...@efficios.com) wrote:
* Sasha Levin (levinsasha...@gmail.com) wrote:
[...]
Hi Mathieu!
In tools/kvm/ we use a rb-tree (same one used
, hence the use of LGPL for all my libs that support
application execution.
Thanks,
Mathieu
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Mathieu Desnoyers
Operating System Efficiency RD Consultant
EfficiOS Inc.
http://www.efficios.com
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* Sasha Levin (levinsasha...@gmail.com) wrote:
On Thu, 2011-05-26 at 19:09 -0400, Mathieu Desnoyers wrote:
* Sasha Levin (levinsasha...@gmail.com) wrote:
On Thu, 2011-05-26 at 21:21 +0300, Pekka Enberg wrote:
On Thu, May 26, 2011 at 9:11 PM, Avi Kivity a...@redhat.com wrote:
On 05
* Ingo Molnar (mi...@elte.hu) wrote:
* Mathieu Desnoyers mathieu.desnoy...@efficios.com wrote:
- Check kernel/tinyrcu.c to see how RCU is implemented in its
simplest form. :)
...so simplistic it only works on UP systems, which are not so common
these days on the systems
* Ingo Molnar (mi...@elte.hu) wrote:
* Mathieu Desnoyers mathieu.desnoy...@efficios.com wrote:
it's offline right now:
$ git clone git://git.lttng.org/urcu
Cloning into urcu...
fatal: The remote end hung up unexpectedly
This would be:
git clone git://git.lttng.org
to interesting race conditions.
Any thoughts on how to address these ?
Thanks,
Mathieu
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EfficiOS Inc.
http://www.efficios.com
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.
Thanks,
Mathieu
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http://www.efficios.com
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syndrome ?
Mathieu
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Mathieu Desnoyers
Operating System Efficiency RD Consultant
EfficiOS Inc.
http://www.efficios.com
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be
found at http://www.efficios.com/publications
Thanks!
Mathieu
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Operating System Efficiency RD Consultant
EfficiOS Inc.
http://www.efficios.com
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* Ingo Molnar (mi...@elte.hu) wrote:
* Mathieu Desnoyers mathieu.desnoy...@polymtl.ca wrote:
Here is a new backtrace, taken with a huge amount of debugging active,
which still
points to an interrupt handler nested over kvm_mmu_pte_write as the
culprit. It's
weird that the kvm
* Mathieu Desnoyers (mathieu.desnoy...@polymtl.ca) wrote:
* Ingo Molnar (mi...@elte.hu) wrote:
* Mathieu Desnoyers mathieu.desnoy...@polymtl.ca wrote:
Here is a new backtrace, taken with a huge amount of debugging active,
which still
points to an interrupt handler nested over
resources that the probes depend on.
Based on comments from Lai Jiangshan and Mathieu Desnoyers.
Cc: Lai Jiangshan [EMAIL PROTECTED]
Cc: Mathieu Desnoyers [EMAIL PROTECTED]
Signed-off-by: Wu Fengguang [EMAIL PROTECTED]
---
diff --git a/Documentation/markers.txt b
* Wu Fengguang ([EMAIL PROTECTED]) wrote:
On Thu, Nov 27, 2008 at 10:00:03AM +0200, Mathieu Desnoyers wrote:
* Wu Fengguang ([EMAIL PROTECTED]) wrote:
+
+marker_synchronize_unregister() must be called before the first
occurrence of
You should probably say
.. must
* Avi Kivity ([EMAIL PROTECTED]) wrote:
Mathieu Desnoyers wrote:
Yes, but the userspace side would collect the format strings as well
(just once) and could put them in the same file. The aggregation is
portable across kernel versions.
Yes,
LTTng does exactly all
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analysis.
Mathieu
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Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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://ltt.polymtl.ca/packages/lttv-0.10.0-pre14-17072008.tar.gz
http://ltt.polymtl.ca/packages/markers-userspace-0.5.tar.bz2
I'll be more than happy to answer your questions.
Mathieu
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I have a truly marvellous patch that fixes the bug which this
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--
Mathieu
);
Sprinkled all across the KVM C code becomes :
trace_kvm_cr_write(vcpu, cr, reg);
Which looks much nicer, IMHO.
It applies on top of linux-next patch-v2.6.26-next-20080715.
Mathieu
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Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key
The VMCS read will be needed by the kvm-trace probes. Put them in
static inline functions in system-side headers instead of in the C file.
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
CC: 'Peter Zijlstra' [EMAIL PROTECTED]
CC: 'Feng(Eric) Liu' [EMAIL PROTECTED]
CC: Avi Kivity [EMAIL
Needed by kvm_tracer probes, which are outside of arch/x86/kvm.
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
CC: 'Peter Zijlstra' [EMAIL PROTECTED]
CC: 'Feng(Eric) Liu' [EMAIL PROTECTED]
CC: Avi Kivity [EMAIL PROTECTED]
CC: kvm@vger.kernel.org
---
arch/x86/kvm/kvm_cache_regs.h| 32
* Jan Kiszka ([EMAIL PROTECTED]) wrote:
Mathieu Desnoyers wrote:
Port/cleanup of KVM-trace to tracepoints.
Tracepoints allow dormat instrumentation, like the kernel markers, but also
allows to describe the trace points in global headers so they can be easily
managed. They also do
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