On Fri, Nov 12, 2010 at 1:20 PM, Daniel P. Berrange <berra...@redhat.com> wrote:
> This introduces a new tracing backend that targets the SystemTAP
> implementation of DTrace userspace tracing. The core functionality
> should be applicable and standard across any DTrace implementation
> on Solaris, OS-X, *BSD, but the Makefile rules will likely need
> some small additional changes to cope with OS specific build
> requirements.
>
> This backend builds a little differently from the other tracing
> backends. Specifically there is no 'trace.c' file, because the
> 'dtrace' command line tool generates a '.o' file directly from
> the dtrace probe definition file. The probe definition is usually
> named with a '.d' extension but QEMU uses '.d' files for its
> external makefile dependancy tracking, so this uses '.dtrace' as
> the extension for the probe definition file.
>
> The 'tracetool' program gains the ability to generate a trace.h
> file for DTrace, and also to generate the trace.d file containing
> the dtrace probe definition.
>
> Example usage of a dtrace probe in systemtap looks like:
>
> probe process("qemu").mark("qemu_malloc") {
> printf("Malloc %d %p\n", $arg1, $arg2);
> }
>
> * .gitignore: Ignore trace-dtrace.*
> * Makefile: Extra rules for generating DTrace files
> * Makefile.obj: Don't build trace.o for DTrace, use
> trace-dtrace.o generated by 'dtrace' instead
> * tracetool: Support for generating DTrace data files
>
> Signed-off-by: Daniel P. Berrange <berra...@redhat.com>
> ---
> .gitignore | 2 +
> Makefile | 23 +++++++++++
> Makefile.objs | 4 ++
> configure | 14 ++++++-
> tracetool | 122
> ++++++++++++++++++++++++++++++++++++++++++++++++++++-----
> 5 files changed, 154 insertions(+), 11 deletions(-)
Reviewed-by: Stefan Hajnoczi <stefa...@linux.vnet.ibm.com>
