On Thu, 08 Aug 2024 17:23:38 +0000
Alice Ryhl [off-list ref] 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@google.com>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
quoted hunk ↗ jump to hunk
---
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(-)