From: Tanish Desai <tanishdesa...@gmail.com>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
rust/qemu-api/wrapper.h | 1 +
scripts/tracetool/backend/ftrace.py | 8 +++++-
tests/tracetool/ftrace.rs | 41 +++++++++++++++++++++++++++++
tests/tracetool/tracetool-test.py | 2 +-
4 files changed, 50 insertions(+), 2 deletions(-)
create mode 100644 tests/tracetool/ftrace.rs
diff --git a/rust/qemu-api/wrapper.h b/rust/qemu-api/wrapper.h
index 15a1b19847f..5227838292b 100644
--- a/rust/qemu-api/wrapper.h
+++ b/rust/qemu-api/wrapper.h
@@ -69,3 +69,4 @@ typedef enum memory_order {
#include "qemu/timer.h"
#include "system/address-spaces.h"
#include "hw/char/pl011.h"
+#include "trace/ftrace.h"
diff --git a/scripts/tracetool/backend/ftrace.py
b/scripts/tracetool/backend/ftrace.py
index 432f216ea2b..51d978f998f 100644
--- a/scripts/tracetool/backend/ftrace.py
+++ b/scripts/tracetool/backend/ftrace.py
@@ -12,7 +12,7 @@
__email__ = "stefa...@redhat.com"
-from tracetool import out
+from tracetool import out, expand_format_string
PUBLIC = True
@@ -43,3 +43,9 @@ def generate_h(event, group):
def generate_h_backend_dstate(event, group):
out(' trace_event_get_state_dynamic_by_id(%(event_id)s) || \\',
event_id="TRACE_" + event.name.upper())
+
+def generate_rs(event, group):
+ out(' let format_string = c"%(fmt)s";',
+ ' unsafe {bindings::ftrace_write(format_string.as_ptr() as
*const c_char, %(args)s);}',
+ fmt=expand_format_string(event.fmt),
+ args=event.args.rust_call_varargs())
diff --git a/tests/tracetool/ftrace.rs b/tests/tracetool/ftrace.rs
new file mode 100644
index 00000000000..950a89534af
--- /dev/null
+++ b/tests/tracetool/ftrace.rs
@@ -0,0 +1,41 @@
+// This file is autogenerated by tracetool, do not edit.
+
+#[allow(unused_imports)]
+use std::ffi::c_char;
+#[allow(unused_imports)]
+use qemu_api::bindings;
+
+#[inline(always)]
+fn trace_event_get_state_dynamic_by_id(_id: u16) -> bool {
+ unsafe { (trace_events_enabled_count != 0) && (_id != 0) }
+}
+
+extern "C" {
+ static mut trace_events_enabled_count: u32;
+}
+extern "C" {
+ static mut _TRACE_TEST_BLAH_DSTATE: u16;
+ static mut _TRACE_TEST_WIBBLE_DSTATE: u16;
+}
+const _TRACE_TEST_BLAH_ENABLED: bool = true;
+const _TRACE_TEST_WIBBLE_ENABLED: bool = true;
+
+#[inline(always)]
+#[allow(dead_code)]
+pub fn trace_test_blah(_context: *mut (), _filename: &std::ffi::CStr)
+{
+ if trace_event_get_state_dynamic_by_id(unsafe { _TRACE_TEST_BLAH_DSTATE}) {
+ let format_string = c"Blah context=%p filename=%s";
+ unsafe {bindings::ftrace_write(format_string.as_ptr() as *const
c_char, _context, _filename.as_ptr());}
+ }
+}
+
+#[inline(always)]
+#[allow(dead_code)]
+pub fn trace_test_wibble(_context: *mut (), _value: std::ffi::c_int)
+{
+ if trace_event_get_state_dynamic_by_id(unsafe {
_TRACE_TEST_WIBBLE_DSTATE}) {
+ let format_string = c"Wibble context=%p value=%d";
+ unsafe {bindings::ftrace_write(format_string.as_ptr() as *const
c_char, _context, _value);}
+ }
+}
diff --git a/tests/tracetool/tracetool-test.py
b/tests/tracetool/tracetool-test.py
index 5e5b16e2856..a91d635910a 100755
--- a/tests/tracetool/tracetool-test.py
+++ b/tests/tracetool/tracetool-test.py
@@ -13,7 +13,7 @@ def get_formats(backend):
"c",
"h",
]
- if backend in {"log", "simple"}:
+ if backend in {"ftrace", "log", "simple"}:
formats += ["rs"]
if backend == "dtrace":
formats += [
--
2.50.1
