Existing simple trace can log upto 6 args per trace event and does not
support strings in trace record format. Introducing new trace format as
discussed earlier on list to support variable number/size of arguments.
(Ref: http://lists.gnu.org/archive/html/qemu-devel/2011-11/msg03426.html)
Basic testing of new tracelog format is successful. Stress testing not yet done.
Apply patches, then run:
make distclean
./configure with --enable-trace-backend=simple
make
sudo make install
Sample tracelog showing strings support:
[harsh@harshbora v9fs]$ scripts/simpletrace.py trace-events trace-23261
v9fs_version 0.000 tag=65535 id=100 msize=8192 version=9P2000.L
v9fs_version_return 17.530 tag=65535 id=100 msize=8192 version=9P2000.L
v9fs_attach 180.121 tag=1 id=104 fid=0 afid=18446744073709551615
uname=nobody aname=
Note: Other backends are only compile tested.
Version History:
v3:
- Added support for LTTng ust trace backend in tracetool.py
v2:
- Updated tracetool.py to support nop, stderr, dtrace backend
v1:
- Working protoype with tracetool.py converted only for simpletrace backend
Harsh Prateek Bora (3):
Converting tracetool.sh to tracetool.py
simpletrace-v2: Handle variable number/size of elements per trace
record.
simpletrace.py: updated log reader script to handle new log format
Makefile.objs | 6 +-
Makefile.target | 10 +-
configure | 7 +-
monitor.c | 2 +-
scripts/simpletrace.py | 109 ++++++++-
scripts/tracetool | 643 ------------------------------------------------
scripts/tracetool.py | 585 +++++++++++++++++++++++++++++++++++++++++++
trace/simple.c | 178 +++++---------
trace/simple.h | 31 ++-
9 files changed, 783 insertions(+), 788 deletions(-)
delete mode 100755 scripts/tracetool
create mode 100755 scripts/tracetool.py
