On Thu, 08 Aug 2024 17:23:38 +0000 Alice Ryhl <aliceryhl@xxxxxxxxxx> wrote: > Make it possible to have Rust code call into tracepoints defined by C > code. It is still required that the tracepoint is declared in a C > header, and that this header is included in the input to bindgen. > > Instead of calling __DO_TRACE directly, the exported rust_do_trace_ > function calls an inline helper function. This is because the `cond` > argument does not exist at the callsite of DEFINE_RUST_DO_TRACE. > > __DECLARE_TRACE always emits an inline static and an extern declaration > that is only used when CREATE_RUST_TRACE_POINTS is set. These should not > end up in the final binary so it is not a problem that they sometimes > are emitted without a user. > > Reviewed-by: Carlos Llamas <cmllamas@xxxxxxxxxx> > Signed-off-by: Alice Ryhl <aliceryhl@xxxxxxxxxx> Reviewed-by: Gary Guo <gary@xxxxxxxxxxx> > --- > include/linux/tracepoint.h | 22 +++++++++++++++++- > include/trace/define_trace.h | 12 ++++++++++ > rust/bindings/bindings_helper.h | 1 + > rust/kernel/lib.rs | 1 + > rust/kernel/tracepoint.rs | 49 +++++++++++++++++++++++++++++++++++++++++ > 5 files changed, 84 insertions(+), 1 deletion(-)
