Hi,
Here is a new release of LTTng for the 2.6.26-rc9 kernel, which
introduces :
- The tracepoints infrastructure.
- Architecture independent markers converted to tracepoints.
- Re-introduction of userspace tracing, only for x86 for now. Allows to
do boot-time tracing (such as tracing the init process). Adds 2 system
calls : sys_marker (marker registration) and sys_trace (tracing per
se). The type support is currently limited : strings are formatted in
userspace and sent to the kernel for logging under the event
"userspace_string". I am doing this simple implementation to get the
feature in until I have time to think more carefully about namespacing
issues, typing and 32/64 bits processes in 64 bits architectures.
Please consider this last feature experimental. Review and testing is
welcome. The userspace linker script and library needed to perform
userspace tracing, as well as some sample code and Makefile, are
available in the svn repository at
http://ltt.polymtl.ca/svn/markers-userspace/
Ports of the linker script, kernel-api.h (which should be
per-architecture) and of markers-userspace-x86.patch to other
architectures are welcome.
As always, please follow the compatibility list and the quickstart guide
located at :
http://ltt.polymtl.ca/svn/ltt/branches/poly/doc/developer/lttng-lttv-compatibility.html
http://ltt.polymtl.ca/svn/ltt/branches/poly/QUICKSTART
Mathieu
--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
LTTng 0.10-pre58 fixes tracepoint probe build in some configurations and
x86 arch-specific irq instrumentation.
Mathieu
* Mathieu Desnoyers ([email protected]) wrote:
> Hi,
>
> Here is a new release of LTTng for the 2.6.26-rc9 kernel, which
> introduces :
>
> - The tracepoints infrastructure.
> - Architecture independent markers converted to tracepoints.
> - Re-introduction of userspace tracing, only for x86 for now. Allows to
> do boot-time tracing (such as tracing the init process). Adds 2 system
> calls : sys_marker (marker registration) and sys_trace (tracing per
> se). The type support is currently limited : strings are formatted in
> userspace and sent to the kernel for logging under the event
> "userspace_string". I am doing this simple implementation to get the
> feature in until I have time to think more carefully about namespacing
> issues, typing and 32/64 bits processes in 64 bits architectures.
>
> Please consider this last feature experimental. Review and testing is
> welcome. The userspace linker script and library needed to perform
> userspace tracing, as well as some sample code and Makefile, are
> available in the svn repository at
>
> http://ltt.polymtl.ca/svn/markers-userspace/
>
> Ports of the linker script, kernel-api.h (which should be
> per-architecture) and of markers-userspace-x86.patch to other
> architectures are welcome.
>
> As always, please follow the compatibility list and the quickstart guide
> located at :
>
> http://ltt.polymtl.ca/svn/ltt/branches/poly/doc/developer/lttng-lttv-compatibility.html
>
> http://ltt.polymtl.ca/svn/ltt/branches/poly/QUICKSTART
>
> Mathieu
>
> --
> Mathieu Desnoyers
> OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
>
> _______________________________________________
> ltt-dev mailing list
> [email protected]
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
>
--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68