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Add support for generating a systemtap tapset static probes

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This introduces generation of a qemu.stp/qemu-system-XXX.stp
files which provides tapsets with friendly names for static
probes & their arguments. Instead of

    probe process("qemu").mark("qemu_malloc") {
        printf("Malloc %d %p\n", $arg1, $arg2);
    }

It is now possible todo

    probe qemu.system.i386.qemu_malloc {
        printf("Malloc %d %p\n", size, ptr);
    }

There is one tapset defined per target arch, for both
user and system emulators.

* Makefile.target: Generate stp files for each target
* tracetool: Support for generating systemtap tapsets
* configure: Check for whether systemtap is available
  with the DTrace backend

Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Daniel P. Berrange 2010-11-12 13:20:25 +00:00 • committed by Anthony Liguori
parent b3d08c029d
commit c276b17da6
3 changed files with 145 additions and 17 deletions
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7
configure vendored
View file

@ -2203,6 +2203,10 @@ if test "$trace_backend" = "dtrace"; then
echo
exit 1
fi
trace_backend_stap="no"
if has 'stap' ; then
trace_backend_stap="yes"
fi
fi
##########################################
@ -2645,6 +2649,9 @@ fi
if test "$trace_backend" = "simple"; then
trace_file="\"$trace_file-%u\""
fi
if test "$trace_backend" = "dtrace" -a "$trace_backend_stap" = "yes" ; then
echo "CONFIG_SYSTEMTAP_TRACE=y" >> $config_host_mak
fi
echo "CONFIG_TRACE_FILE=$trace_file" >> $config_host_mak
echo "TOOLS=$tools" >> $config_host_mak