v2: - Re-export probe::probe!() from the trace crate to avoid the explicit probe crate dependency from hpet, pl011, etc. [Paolo]
This series adds SDT probe support so that SystemTap, GDB, etc can trace QEMU's Rust code when compiled with `./configure --enable-trace-backends=dtrace`. The dtrace(1) tool that generates the .o and C header file does not support Rust. Use the probe crate (https://crates.io/crates/probe), which takes care of emitting SDT probes, and extend tracetool to emit code for the trace events. While SDT is cross-platform, the probe crate currently only supports Linux (SystemTap). On other platforms the crate is a nop - it compiles but does nothing. Future changes to the probe crate may add support for other operating systems like FreeBSD, macOS, etc without much needed in the way of QEMU code changes. Based-on: <[email protected]> Stefan Hajnoczi (4): hpet: remove unused trace events rust/hpet: add trace events subprojects: add probe crate tracetool: add Rust DTrace/SystemTap SDT support hw/timer/trace-events | 2 - rust/Cargo.lock | 6 ++ rust/hw/timer/hpet/Cargo.toml | 1 + rust/hw/timer/hpet/meson.build | 1 + rust/hw/timer/hpet/src/device.rs | 45 ++++++++----- rust/meson.build | 2 + rust/trace/Cargo.toml | 1 + rust/trace/meson.build | 2 +- rust/trace/src/lib.rs | 4 ++ scripts/archive-source.sh | 1 + scripts/make-release | 2 +- scripts/tracetool/__init__.py | 1 + scripts/tracetool/backend/dtrace.py | 31 +++++++++ scripts/tracetool/format/rs.py | 27 ++++++-- subprojects/.gitignore | 1 + .../packagefiles/probe-0.5-rs/meson.build | 22 +++++++ subprojects/probe-0.5-rs.wrap | 7 ++ tests/tracetool/dtrace.rs | 65 +++++++++++++++++++ tests/tracetool/ftrace.rs | 21 ++++++ tests/tracetool/log.rs | 21 ++++++ tests/tracetool/simple.rs | 21 ++++++ tests/tracetool/syslog.rs | 21 ++++++ tests/tracetool/tracetool-test.py | 2 +- 23 files changed, 280 insertions(+), 27 deletions(-) create mode 100644 subprojects/packagefiles/probe-0.5-rs/meson.build create mode 100644 subprojects/probe-0.5-rs.wrap create mode 100644 tests/tracetool/dtrace.rs -- 2.51.1
