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Tanish Desai and Paolo Bonzini's tracing Rust support. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmjdSSIACgkQnKSrs4Gr c8h8hwf/RXawMzImGn3I2kTOUWAQ97+yY0UgtyO010K71gypBa2EBcPIVH0ZOsy0 oT5pF2w7k0g83DXqupXiZO3yjSSmeGBXlOw8QS6D+FN0VpsdxrYJnvzVMqCckOrR 6wwM+fYYfCk/LwQFvjcMDdd6BSB/wUyMuBnh+fa8X9vxRL6CgMY7RpQd7YZ9JNtL PFQscu/K6zUARxwQ/DZTx5jYlW4rE5O4mq80CW2l1pgnyOH5vH/TySTKp0yX8eDO 5eoF7ttieOxxt6YobFak7EfWFvFuyp1j5NlWlyWKzhce1oSOAbaXnB1I61admRb3 7XrsTU0RjH6kp8ki4SZEoAh/HMw+4w== =myWt -----END PGP SIGNATURE----- Merge tag 'tracing-pull-request' of https://gitlab.com/stefanha/qemu into staging Pull request Tanish Desai and Paolo Bonzini's tracing Rust support. # -----BEGIN PGP SIGNATURE----- # # iQEzBAABCgAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmjdSSIACgkQnKSrs4Gr # c8h8hwf/RXawMzImGn3I2kTOUWAQ97+yY0UgtyO010K71gypBa2EBcPIVH0ZOsy0 # oT5pF2w7k0g83DXqupXiZO3yjSSmeGBXlOw8QS6D+FN0VpsdxrYJnvzVMqCckOrR # 6wwM+fYYfCk/LwQFvjcMDdd6BSB/wUyMuBnh+fa8X9vxRL6CgMY7RpQd7YZ9JNtL # PFQscu/K6zUARxwQ/DZTx5jYlW4rE5O4mq80CW2l1pgnyOH5vH/TySTKp0yX8eDO # 5eoF7ttieOxxt6YobFak7EfWFvFuyp1j5NlWlyWKzhce1oSOAbaXnB1I61admRb3 # 7XrsTU0RjH6kp8ki4SZEoAh/HMw+4w== # =myWt # -----END PGP SIGNATURE----- # gpg: Signature made Wed 01 Oct 2025 08:30:42 AM PDT # gpg: using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8 # gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [unknown] # gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" [unknown] # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8 * tag 'tracing-pull-request' of https://gitlab.com/stefanha/qemu: tracetool/syslog: add Rust support tracetool/ftrace: add Rust support tracetool/log: add Rust support log: change qemu_loglevel to unsigned tracetool/simple: add Rust support rust: pl011: add tracepoints rust: qdev: add minimal clock bindings rust: add trace crate tracetool: Add Rust format support tracetool/backend: remove redundant trace event checks tracetool: add CHECK_TRACE_EVENT_GET_STATE trace/ftrace: move snprintf+write from tracepoints to ftrace.c tracetool: add SPDX headers treewide: remove unnessary "coding" header tracetool: remove dead code tracetool: fix usage of try_import() Signed-off-by: Richard Henderson <richard.henderson@linaro.org>pull/305/head
Richard Henderson
10 months ago
62 changed files with 721 additions and 224 deletions
@ -0,0 +1,19 @@ |
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[package] |
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name = "trace" |
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version = "0.1.0" |
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authors = ["Tanish Desai <tanishdesai37@gmail.com>"] |
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description = "QEMU tracing infrastructure support" |
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resolver = "2" |
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publish = false |
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|
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edition.workspace = true |
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homepage.workspace = true |
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license.workspace = true |
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repository.workspace = true |
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rust-version.workspace = true |
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|
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[dependencies] |
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libc = { workspace = true } |
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|
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[lints] |
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workspace = true |
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@ -0,0 +1,19 @@ |
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rust = import('rust') |
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|
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lib_rs = configure_file( |
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input: 'src/lib.rs', |
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output: 'lib.rs', |
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configuration: { |
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'MESON_BUILD_ROOT': meson.project_build_root(), |
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}) |
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|
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_trace_rs = static_library( |
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'trace', # Library name, |
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lib_rs, |
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trace_rs_targets, # List of generated `.rs` custom targets |
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override_options: ['rust_std=2021', 'build.rust_std=2021'], |
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dependencies: [libc_rs], |
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rust_abi: 'rust', |
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) |
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|
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trace_rs = declare_dependency(link_with: _trace_rs) |
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@ -0,0 +1,39 @@ |
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// 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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|
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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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@ -0,0 +1,64 @@ |
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# SPDX-License-Identifier: GPL-2.0-or-later |
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|
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""" |
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trace-DIR.rs |
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""" |
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__author__ = "Tanish Desai <tanishdesai37@gmail.com>" |
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__copyright__ = "Copyright 2025, Tanish Desai <tanishdesai37@gmail.com>" |
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__license__ = "GPL version 2 or (at your option) any later version" |
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__maintainer__ = "Stefan Hajnoczi" |
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__email__ = "stefanha@redhat.com" |
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from tracetool import out |
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|
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def generate(events, backend, group): |
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out('// SPDX-License-Identifier: GPL-2.0-or-later', |
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'// This file is @generated by tracetool, do not edit.', |
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'', |
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'#[allow(unused_imports)]', |
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'use std::ffi::c_char;', |
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'#[allow(unused_imports)]', |
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'use util::bindings;', |
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'', |
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'#[inline(always)]', |
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'fn trace_event_state_is_enabled(dstate: u16) -> bool {', |
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' (unsafe { trace_events_enabled_count }) != 0 && dstate != 0', |
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'}', |
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'', |
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'extern "C" {', |
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' static mut trace_events_enabled_count: u32;', |
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'}',) |
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|
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out('extern "C" {') |
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|
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for e in events: |
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out(' static mut %s: u16;' % e.api(e.QEMU_DSTATE)) |
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out('}') |
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|
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backend.generate_begin(events, group) |
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|
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for e in events: |
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out('', |
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'#[inline(always)]', |
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'#[allow(dead_code)]', |
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'pub fn %(api)s(%(args)s)', |
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'{', |
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api=e.api(e.QEMU_TRACE), |
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args=e.args.rust_decl()) |
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|
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if "disable" not in e.properties: |
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backend.generate(e, group, check_trace_event_get_state=False) |
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if backend.check_trace_event_get_state: |
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event_id = 'TRACE_' + e.name.upper() |
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out(' if trace_event_state_is_enabled(unsafe { _%(event_id)s_DSTATE}) {', |
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event_id = event_id, |
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api=e.api()) |
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backend.generate(e, group, check_trace_event_get_state=True) |
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out(' }') |
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out('}') |
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backend.generate_end(events, group) |
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@ -0,0 +1,40 @@ |
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// SPDX-License-Identifier: GPL-2.0-or-later
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// This file is @generated by tracetool, do not edit.
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|
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#[allow(unused_imports)] |
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use std::ffi::c_char; |
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#[allow(unused_imports)] |
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use util::bindings; |
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|
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#[inline(always)] |
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fn trace_event_state_is_enabled(dstate: u16) -> bool { |
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(unsafe { trace_events_enabled_count }) != 0 && dstate != 0 |
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} |
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extern "C" { |
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static mut trace_events_enabled_count: u32; |
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} |
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extern "C" { |
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static mut _TRACE_TEST_BLAH_DSTATE: u16; |
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static mut _TRACE_TEST_WIBBLE_DSTATE: u16; |
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} |
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#[inline(always)] |
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#[allow(dead_code)] |
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pub fn trace_test_blah(_context: *mut (), _filename: &std::ffi::CStr) |
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{ |
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if trace_event_state_is_enabled(unsafe { _TRACE_TEST_BLAH_DSTATE}) { |
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let format_string = c"Blah context=%p filename=%s"; |
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unsafe {bindings::ftrace_write(format_string.as_ptr() as *const c_char, _context /* as *mut () */, _filename.as_ptr());} |
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} |
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} |
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#[inline(always)] |
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#[allow(dead_code)] |
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pub fn trace_test_wibble(_context: *mut (), _value: std::ffi::c_int) |
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{ |
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if trace_event_state_is_enabled(unsafe { _TRACE_TEST_WIBBLE_DSTATE}) { |
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let format_string = c"Wibble context=%p value=%d"; |
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unsafe {bindings::ftrace_write(format_string.as_ptr() as *const c_char, _context /* as *mut () */, _value /* as std::ffi::c_int */);} |
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} |
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} |
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@ -0,0 +1,44 @@ |
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// SPDX-License-Identifier: GPL-2.0-or-later
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// This file is @generated by tracetool, do not edit.
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|
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#[allow(unused_imports)] |
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use std::ffi::c_char; |
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#[allow(unused_imports)] |
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use util::bindings; |
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|
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#[inline(always)] |
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fn trace_event_state_is_enabled(dstate: u16) -> bool { |
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(unsafe { trace_events_enabled_count }) != 0 && dstate != 0 |
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} |
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|
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extern "C" { |
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static mut trace_events_enabled_count: u32; |
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} |
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extern "C" { |
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static mut _TRACE_TEST_BLAH_DSTATE: u16; |
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static mut _TRACE_TEST_WIBBLE_DSTATE: u16; |
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} |
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|
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#[inline(always)] |
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#[allow(dead_code)] |
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pub fn trace_test_blah(_context: *mut (), _filename: &std::ffi::CStr) |
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{ |
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if trace_event_state_is_enabled(unsafe { _TRACE_TEST_BLAH_DSTATE}) { |
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let format_string = c"test_blah Blah context=%p filename=%s\n"; |
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if (unsafe { bindings::qemu_loglevel } & bindings::LOG_TRACE) != 0 { |
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unsafe { bindings::qemu_log(format_string.as_ptr() as *const c_char, _context /* as *mut () */, _filename.as_ptr());} |
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} |
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} |
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} |
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|
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#[inline(always)] |
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#[allow(dead_code)] |
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pub fn trace_test_wibble(_context: *mut (), _value: std::ffi::c_int) |
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{ |
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if trace_event_state_is_enabled(unsafe { _TRACE_TEST_WIBBLE_DSTATE}) { |
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let format_string = c"test_wibble Wibble context=%p value=%d\n"; |
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if (unsafe { bindings::qemu_loglevel } & bindings::LOG_TRACE) != 0 { |
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unsafe { bindings::qemu_log(format_string.as_ptr() as *const c_char, _context /* as *mut () */, _value /* as std::ffi::c_int */);} |
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} |
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} |
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} |
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@ -0,0 +1,40 @@ |
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// SPDX-License-Identifier: GPL-2.0-or-later
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// This file is @generated by tracetool, do not edit.
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|
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#[allow(unused_imports)] |
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use std::ffi::c_char; |
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#[allow(unused_imports)] |
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use util::bindings; |
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|
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#[inline(always)] |
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fn trace_event_state_is_enabled(dstate: u16) -> bool { |
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(unsafe { trace_events_enabled_count }) != 0 && dstate != 0 |
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} |
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|
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extern "C" { |
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static mut trace_events_enabled_count: u32; |
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} |
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extern "C" { |
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static mut _TRACE_TEST_BLAH_DSTATE: u16; |
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static mut _TRACE_TEST_WIBBLE_DSTATE: u16; |
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} |
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|
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#[inline(always)] |
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#[allow(dead_code)] |
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pub fn trace_test_blah(_context: *mut (), _filename: &std::ffi::CStr) |
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{ |
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if trace_event_state_is_enabled(unsafe { _TRACE_TEST_BLAH_DSTATE}) { |
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extern "C" { fn _simple_trace_test_blah(_context: *mut (), _filename: *const std::ffi::c_char); } |
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unsafe { _simple_trace_test_blah(_context, _filename.as_ptr()); } |
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} |
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} |
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|
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#[inline(always)] |
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#[allow(dead_code)] |
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pub fn trace_test_wibble(_context: *mut (), _value: std::ffi::c_int) |
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{ |
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if trace_event_state_is_enabled(unsafe { _TRACE_TEST_WIBBLE_DSTATE}) { |
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extern "C" { fn _simple_trace_test_wibble(_context: *mut (), _value: std::ffi::c_int); } |
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unsafe { _simple_trace_test_wibble(_context, _value); } |
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} |
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} |
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@ -0,0 +1,40 @@ |
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// SPDX-License-Identifier: GPL-2.0-or-later
|
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// This file is @generated by tracetool, do not edit.
|
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|
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#[allow(unused_imports)] |
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use std::ffi::c_char; |
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#[allow(unused_imports)] |
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use util::bindings; |
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|
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#[inline(always)] |
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fn trace_event_state_is_enabled(dstate: u16) -> bool { |
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(unsafe { trace_events_enabled_count }) != 0 && dstate != 0 |
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} |
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|
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extern "C" { |
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static mut trace_events_enabled_count: u32; |
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} |
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extern "C" { |
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static mut _TRACE_TEST_BLAH_DSTATE: u16; |
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static mut _TRACE_TEST_WIBBLE_DSTATE: u16; |
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} |
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|
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#[inline(always)] |
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#[allow(dead_code)] |
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pub fn trace_test_blah(_context: *mut (), _filename: &std::ffi::CStr) |
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{ |
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if trace_event_state_is_enabled(unsafe { _TRACE_TEST_BLAH_DSTATE}) { |
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let format_string = c"Blah context=%p filename=%s"; |
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unsafe {::trace::syslog(::trace::LOG_INFO, format_string.as_ptr() as *const c_char, _context /* as *mut () */, _filename.as_ptr());} |
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} |
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} |
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|
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#[inline(always)] |
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#[allow(dead_code)] |
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pub fn trace_test_wibble(_context: *mut (), _value: std::ffi::c_int) |
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{ |
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if trace_event_state_is_enabled(unsafe { _TRACE_TEST_WIBBLE_DSTATE}) { |
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let format_string = c"Wibble context=%p value=%d"; |
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unsafe {::trace::syslog(::trace::LOG_INFO, format_string.as_ptr() as *const c_char, _context /* as *mut () */, _value /* as std::ffi::c_int */);} |
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} |
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} |
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