Expand description
Compile-time gated kernel tracing (plan #7).
Borrowed from MAX’s Trace, TraceLevel, trace_arg pattern.
Tracing calls are baked into hot paths but the macro expands to
either a stamped eprintln! (when the kernel-trace feature is
on) or to nothing (default). The compiler eliminates the
disabled branch entirely — production builds pay zero overhead.
Use it like:
ⓘ
rlx_runtime::ktrace!("matmul", "m={m} k={k} n={n}");The macro takes a kind (op/section name) and a format string
plus args. Output is namespaced with [ktrace:<kind>] and
includes a monotonic timestamp from rlx_ir::Tick.