1461752f0f
The syslog backend needs the syslog function from libc and the LOG_INFO enum value; they are re-exported as "::trace::syslog" and "::trace::LOG_INFO" so that device crates do not all have to add the libc dependency, but otherwise there is nothing special. Signed-off-by: Tanish Desai <tanishdesai37@gmail.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-ID: <20250929154938.594389-17-pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
39 lines
1.1 KiB
Rust
39 lines
1.1 KiB
Rust
// SPDX-License-Identifier: GPL-2.0-or-later
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//! This crate provides macros that aid in using QEMU's tracepoint
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//! functionality.
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#[doc(hidden)]
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/// Re-exported item to avoid adding libc as a dependency everywhere.
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pub use libc::{syslog, LOG_INFO};
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#[macro_export]
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/// Define the trace-points from the named directory (which should have slashes
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/// replaced by underscore characters) as functions in a module called `trace`.
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///
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/// ```ignore
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/// ::trace::include_trace!("hw_char");
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/// // ...
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/// trace::trace_pl011_read_fifo_rx_full();
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/// ```
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macro_rules! include_trace {
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($name:literal) => {
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#[allow(
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clippy::ptr_as_ptr,
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clippy::cast_lossless,
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clippy::used_underscore_binding
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)]
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mod trace {
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#[cfg(not(MESON))]
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include!(concat!(
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env!("MESON_BUILD_ROOT"),
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"/trace/trace-",
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$name,
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".rs"
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));
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#[cfg(MESON)]
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include!(concat!("@MESON_BUILD_ROOT@/trace/trace-", $name, ".rs"));
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}
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};
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}
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