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charset="utf-8" From: Tanish Desai Signed-off-by: Tanish Desai Signed-off-by: Paolo Bonzini Reviewed-by: Stefan Hajnoczi --- scripts/tracetool/backend/ftrace.py | 8 +++++- tests/tracetool/ftrace.rs | 40 +++++++++++++++++++++++++++++ tests/tracetool/tracetool-test.py | 2 +- 3 files changed, 48 insertions(+), 2 deletions(-) create mode 100644 tests/tracetool/ftrace.rs diff --git a/scripts/tracetool/backend/ftrace.py b/scripts/tracetool/backen= d/ftrace.py index 7ddd5d11a66..e03698a2edf 100644 --- a/scripts/tracetool/backend/ftrace.py +++ b/scripts/tracetool/backend/ftrace.py @@ -12,7 +12,7 @@ __email__ =3D "stefanha@redhat.com" =20 =20 -from tracetool import out +from tracetool import out, expand_format_string =20 =20 PUBLIC =3D 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=3D"TRACE_" + event.name.upper()) + +def generate_rs(event, group): + out(' let format_string =3D c"%(fmt)s";', + ' unsafe {bindings::ftrace_write(format_string.as_ptr() as = *const c_char, %(args)s);}', + fmt=3Dexpand_format_string(event.fmt), + args=3Devent.args.rust_call_varargs()) diff --git a/tests/tracetool/ftrace.rs b/tests/tracetool/ftrace.rs new file mode 100644 index 00000000000..7811056f673 --- /dev/null +++ b/tests/tracetool/ftrace.rs @@ -0,0 +1,40 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +// This file is @generated by tracetool, do not edit. + +#[allow(unused_imports)] +use std::ffi::c_char; +#[allow(unused_imports)] +use util::bindings; + +#[inline(always)] +fn trace_event_get_state_dynamic_by_id(_id: u16) -> bool { + unsafe { (trace_events_enabled_count !=3D 0) && (_id !=3D 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; +} + +#[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_DSTAT= E}) { + let format_string =3D c"Blah context=3D%p filename=3D%s"; + unsafe {bindings::ftrace_write(format_string.as_ptr() as *const c_= char, _context /* as *mut () */, _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_DST= ATE}) { + let format_string =3D c"Wibble context=3D%p value=3D%d"; + unsafe {bindings::ftrace_write(format_string.as_ptr() as *const c_= char, _context /* as *mut () */, _value /* as std::ffi::c_int */);} + } +} diff --git a/tests/tracetool/tracetool-test.py b/tests/tracetool/tracetool-= test.py index f58f3b795e7..3341fb18f90 100755 --- a/tests/tracetool/tracetool-test.py +++ b/tests/tracetool/tracetool-test.py @@ -14,7 +14,7 @@ def get_formats(backend): "c", "h", ] - if backend in {"log", "simple"}: + if backend in {"ftrace", "log", "simple"}: formats +=3D ["rs"] if backend =3D=3D "dtrace": formats +=3D [ --=20 2.51.0