Ftrace supports uprobes - trace events on user space applications.
Trace-cmd cannot configure uprobes, in order to support it this new
functionality is introduced:
- Function name to file offset mapping, this information is extracted
from the dwarf and ELF headers in the binary file.
- New options are added to "trace-cmd record" for setting a uprobe on
given file and the libraries it depends on:
--uprobe file:function
--uprobe-ret file:function
--libs
--no-libs
[
v3 changes:
- Added DEBUG_INTERNALS local define in trace-obj-debug.c, for printing
debug information about resolving process.
- Replaced function name regex match with simple wildcards match.
- Implemented functionality to search for functions in the libraries that
the given application depends on.
- Added --libs and --no-libs arguments to trace-cmd record.
v2 changes:
- Renamed some internal trace-cmd functions, to not overlap the bfd
library namespace. Suggested by Steven Rostedt.
]
Tzvetomir Stoyanov (VMware) (3):
trace-cmd: Internal refactoring of pid address map logic
trace-cmd: New internal APIs for reading ELF header
trace-cmd: [POC] Add support for uprobes
Makefile | 10 +
tracecmd/Makefile | 2 +
tracecmd/include/trace-local.h | 56 +-
tracecmd/trace-obj-debug.c | 908 +++++++++++++++++++++++++++++++++
tracecmd/trace-record.c | 204 ++++----
tracecmd/trace-uprobes.c | 223 ++++++++
tracecmd/trace-usage.c | 8 +
7 files changed, 1297 insertions(+), 114 deletions(-)
create mode 100644 tracecmd/trace-obj-debug.c
create mode 100644 tracecmd/trace-uprobes.c
--
2.28.0
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