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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=40.107.4.123; envelope-from=vsementsov@virtuozzo.com; helo=EUR03-DB5-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @virtuozzo.com) X-ZM-MESSAGEID: 1640116604002100001 Content-Type: text/plain; charset="utf-8" Add possibility to generate trace points for each qmp command. We should generate both trace points and trace-events file, for further trace point code generation. Signed-off-by: Vladimir Sementsov-Ogievskiy --- scripts/qapi/commands.py | 84 ++++++++++++++++++++++++++++++++++------ 1 file changed, 73 insertions(+), 11 deletions(-) diff --git a/scripts/qapi/commands.py b/scripts/qapi/commands.py index 21001bbd6b..e62f1a4125 100644 --- a/scripts/qapi/commands.py +++ b/scripts/qapi/commands.py @@ -53,7 +53,8 @@ def gen_command_decl(name: str, def gen_call(name: str, arg_type: Optional[QAPISchemaObjectType], boxed: bool, - ret_type: Optional[QAPISchemaType]) -> str: + ret_type: Optional[QAPISchemaType], + add_trace_points: bool) -> str: ret =3D '' =20 argstr =3D '' @@ -71,21 +72,65 @@ def gen_call(name: str, if ret_type: lhs =3D 'retval =3D ' =20 - ret =3D mcgen(''' + qmp_name =3D f'qmpq_{c_name(name)}' + upper =3D qmp_name.upper() + + if add_trace_points: + ret +=3D mcgen(''' + + if (trace_event_get_state_backends(TRACE_%(upper)s)) { + g_autoptr(GString) req_json =3D qobject_to_json(QOBJECT(args)); + trace_%(qmp_name)s("", req_json->str); + } + ''', + upper=3Dupper, qmp_name=3Dqmp_name) + + ret +=3D mcgen(''' =20 %(lhs)sqmp_%(c_name)s(%(args)s&err); - error_propagate(errp, err); ''', c_name=3Dc_name(name), args=3Dargstr, lhs=3Dlhs) - if ret_type: - ret +=3D mcgen(''' + + ret +=3D mcgen(''' if (err) { +''') + + if add_trace_points: + ret +=3D mcgen(''' + trace_%(qmp_name)s("FAIL: ", error_get_pretty(err)); +''', + qmp_name=3Dqmp_name) + + ret +=3D mcgen(''' + error_propagate(errp, err); goto out; } +''') + + if ret_type: + ret +=3D mcgen(''' =20 qmp_marshal_output_%(c_name)s(retval, ret, errp); ''', c_name=3Dret_type.c_name()) + + if add_trace_points: + if ret_type: + ret +=3D mcgen(''' + + if (trace_event_get_state_backends(TRACE_%(upper)s)) { + g_autoptr(GString) ret_json =3D qobject_to_json(*ret); + trace_%(qmp_name)s("RET:", ret_json->str); + } + ''', + upper=3Dupper, qmp_name=3Dqmp_name) + else: + ret +=3D mcgen(''' + + trace_%(qmp_name)s("SUCCESS", ""); + ''', + qmp_name=3Dqmp_name) + return ret =20 =20 @@ -122,10 +167,14 @@ def gen_marshal_decl(name: str) -> str: proto=3Dbuild_marshal_proto(name)) =20 =20 +def gen_trace(name: str) -> str: + return f'qmpq_{c_name(name)}(const char *tag, const char *json) "%s%s"= \n' + def gen_marshal(name: str, arg_type: Optional[QAPISchemaObjectType], boxed: bool, - ret_type: Optional[QAPISchemaType]) -> str: + ret_type: Optional[QAPISchemaType], + add_trace_points: bool) -> str: have_args =3D boxed or (arg_type and not arg_type.is_empty()) if have_args: assert arg_type is not None @@ -180,7 +229,7 @@ def gen_marshal(name: str, } ''') =20 - ret +=3D gen_call(name, arg_type, boxed, ret_type) + ret +=3D gen_call(name, arg_type, boxed, ret_type, add_trace_points) =20 ret +=3D mcgen(''' =20 @@ -238,11 +287,12 @@ def gen_register_command(name: str, =20 =20 class QAPISchemaGenCommandVisitor(QAPISchemaModularCVisitor): - def __init__(self, prefix: str): + def __init__(self, prefix: str, add_trace_points: bool): super().__init__( prefix, 'qapi-commands', ' * Schema-defined QAPI/QMP commands', None, __doc__) self._visited_ret_types: Dict[QAPIGenC, Set[QAPISchemaType]] =3D {} + self.add_trace_points =3D add_trace_points =20 def _begin_user_module(self, name: str) -> None: self._visited_ret_types[self._genc] =3D set() @@ -261,6 +311,15 @@ def _begin_user_module(self, name: str) -> None: =20 ''', commands=3Dcommands, visit=3Dvisit)) + + if self.add_trace_points and c_name(commands) !=3D 'qapi_commands': + self._genc.add(mcgen(''' +#include "trace/trace-qapi.h" +#include "qapi/qmp/qjson.h" +#include "trace/trace-%(nm)s_trace_events.h" +''', + nm=3Dc_name(commands))) + self._genh.add(mcgen(''' #include "%(types)s.h" =20 @@ -322,7 +381,9 @@ def visit_command(self, with ifcontext(ifcond, self._genh, self._genc): self._genh.add(gen_command_decl(name, arg_type, boxed, ret_typ= e)) self._genh.add(gen_marshal_decl(name)) - self._genc.add(gen_marshal(name, arg_type, boxed, ret_type)) + self._genc.add(gen_marshal(name, arg_type, boxed, ret_type, + self.add_trace_points)) + self._gent.add(gen_trace(name)) with self._temp_module('./init'): with ifcontext(ifcond, self._genh, self._genc): self._genc.add(gen_register_command( @@ -332,7 +393,8 @@ def visit_command(self, =20 def gen_commands(schema: QAPISchema, output_dir: str, - prefix: str) -> None: - vis =3D QAPISchemaGenCommandVisitor(prefix) + prefix: str, + add_trace_points: bool) -> None: + vis =3D QAPISchemaGenCommandVisitor(prefix, add_trace_points) schema.visit(vis) vis.write(output_dir) --=20 2.31.1 From nobody Mon Feb 9 02:34:31 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=40.107.21.99; envelope-from=vsementsov@virtuozzo.com; helo=EUR05-VI1-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @virtuozzo.com) X-ZM-MESSAGEID: 1640115704284100001 Content-Type: text/plain; charset="utf-8" Add and option to generate trace points. We should generate both trace points and trace-events files for further trace point code generation. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- scripts/qapi/gen.py | 13 ++++++++++--- scripts/qapi/main.py | 10 +++++++--- 2 files changed, 17 insertions(+), 6 deletions(-) diff --git a/scripts/qapi/gen.py b/scripts/qapi/gen.py index 995a97d2b8..605b3fe68a 100644 --- a/scripts/qapi/gen.py +++ b/scripts/qapi/gen.py @@ -251,7 +251,7 @@ def __init__(self, self._builtin_blurb =3D builtin_blurb self._pydoc =3D pydoc self._current_module: Optional[str] =3D None - self._module: Dict[str, Tuple[QAPIGenC, QAPIGenH]] =3D {} + self._module: Dict[str, Tuple[QAPIGenC, QAPIGenH, QAPIGen]] =3D {} self._main_module: Optional[str] =3D None =20 @property @@ -264,6 +264,11 @@ def _genh(self) -> QAPIGenH: assert self._current_module is not None return self._module[self._current_module][1] =20 + @property + def _gent(self) -> QAPIGen: + assert self._current_module is not None + return self._module[self._current_module][2] + @staticmethod def _module_dirname(name: str) -> str: if QAPISchemaModule.is_user_module(name): @@ -293,7 +298,8 @@ def _add_module(self, name: str, blurb: str) -> None: basename =3D self._module_filename(self._what, name) genc =3D QAPIGenC(basename + '.c', blurb, self._pydoc) genh =3D QAPIGenH(basename + '.h', blurb, self._pydoc) - self._module[name] =3D (genc, genh) + gent =3D QAPIGen(basename + '.trace-events') + self._module[name] =3D (genc, genh, gent) self._current_module =3D name =20 @contextmanager @@ -304,11 +310,12 @@ def _temp_module(self, name: str) -> Iterator[None]: self._current_module =3D old_module =20 def write(self, output_dir: str, opt_builtins: bool =3D False) -> None: - for name, (genc, genh) in self._module.items(): + for name, (genc, genh, gent) in self._module.items(): if QAPISchemaModule.is_builtin_module(name) and not opt_builti= ns: continue genc.write(output_dir) genh.write(output_dir) + gent.write(output_dir) =20 def _begin_builtin_module(self) -> None: pass diff --git a/scripts/qapi/main.py b/scripts/qapi/main.py index f2ea6e0ce4..3adf0319cf 100644 --- a/scripts/qapi/main.py +++ b/scripts/qapi/main.py @@ -32,7 +32,8 @@ def generate(schema_file: str, output_dir: str, prefix: str, unmask: bool =3D False, - builtins: bool =3D False) -> None: + builtins: bool =3D False, + add_trace_points: bool =3D False) -> None: """ Generate C code for the given schema into the target directory. =20 @@ -49,7 +50,7 @@ def generate(schema_file: str, schema =3D QAPISchema(schema_file) gen_types(schema, output_dir, prefix, builtins) gen_visit(schema, output_dir, prefix, builtins) - gen_commands(schema, output_dir, prefix) + gen_commands(schema, output_dir, prefix, add_trace_points) gen_events(schema, output_dir, prefix) gen_introspect(schema, output_dir, prefix, unmask) =20 @@ -74,6 +75,8 @@ def main() -> int: parser.add_argument('-u', '--unmask-non-abi-names', action=3D'store_tr= ue', dest=3D'unmask', help=3D"expose non-ABI names in introspection") + parser.add_argument('--add-trace-points', action=3D'store_true', + help=3D"add trace points to qmp marshals") parser.add_argument('schema', action=3D'store') args =3D parser.parse_args() =20 @@ -88,7 +91,8 @@ def main() -> int: output_dir=3Dargs.output_dir, prefix=3Dargs.prefix, unmask=3Dargs.unmask, - builtins=3Dargs.builtins) + builtins=3Dargs.builtins, + add_trace_points=3Dargs.add_trace_points) except QAPIError as err: print(f"{sys.argv[0]}: {str(err)}", file=3Dsys.stderr) return 1 --=20 2.31.1 From nobody Mon Feb 9 02:34:31 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=40.107.21.99; envelope-from=vsementsov@virtuozzo.com; helo=EUR05-VI1-obe.outbound.protection.outlook.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FORGED_SPF_HELO=1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, T_SPF_TEMPERROR=0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @virtuozzo.com) X-ZM-MESSAGEID: 1640115708723100001 Content-Type: text/plain; charset="utf-8" I need help with this thing. Now it works like this: make -j9 ninja: error: '/work/src/qemu/up/up-trace-qmp-commands/build/qapi/qapi-comm= ands-authz.trace-events', needed by 'trace/trace-events-all', missing and n= o known rule to make it make[1]: *** [Makefile:162: run-ninja] Error 1 make[1]: Leaving directory '/work/src/qemu/up/up-trace-qmp-commands/build' make: *** [GNUmakefile:11: all] Error 2 OK, let's try to make it by hand: make qapi/qapi-commands-authz.trace-events changing dir to build for make "qapi/qapi-commands-authz.trace-events"... make[1]: Entering directory '/work/src/qemu/up/up-trace-qmp-commands/build' GIT ui/keycodemapdb meson tests/fp/berkeley-testfloat-3 tests/fp/berk= eley-softfloat-3 dtc capstone slirp [1/1] Generating shared QAPI source files with a custom command make[1]: Leaving directory '/work/src/qemu/up/up-trace-qmp-commands/build' It works! So meson doesn't understand that absolute path is the same as relative.. But I failed to make it the correct way :( And after it, just run "make" again and it build the whole project. Signed-off-by: Vladimir Sementsov-Ogievskiy --- meson.build | 1 + qapi/meson.build | 4 +++- trace/meson.build | 10 +++++++--- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/meson.build b/meson.build index f45ecf31bd..20d32fd20d 100644 --- a/meson.build +++ b/meson.build @@ -38,6 +38,7 @@ qemu_icondir =3D get_option('datadir') / 'icons' =20 config_host_data =3D configuration_data() genh =3D [] +qapi_trace_events =3D [] =20 target_dirs =3D config_host['TARGET_DIRS'].split() have_linux_user =3D false diff --git a/qapi/meson.build b/qapi/meson.build index c0c49c15e4..333ca60583 100644 --- a/qapi/meson.build +++ b/qapi/meson.build @@ -114,7 +114,9 @@ foreach module : qapi_all_modules 'qapi-events-@0@.h'.format(module), 'qapi-commands-@0@.c'.format(module), 'qapi-commands-@0@.h'.format(module), + 'qapi-commands-@0@.trace-events'.format(module), ] + qapi_trace_events +=3D ['qapi-commands-@0@.trace-events'.format(module= )] endif if module.endswith('-target') qapi_specific_outputs +=3D qapi_module_outputs @@ -126,7 +128,7 @@ endforeach qapi_files =3D custom_target('shared QAPI source files', output: qapi_util_outputs + qapi_specific_outputs + qapi_nonmodule_outpu= ts, input: [ files('qapi-schema.json') ], - command: [ qapi_gen, '-o', 'qapi', '-b', '@INPUT0@' ], + command: [ qapi_gen, '-o', 'qapi', '-b', '@INPUT0@', '--add-trace-points= ' ], depend_files: [ qapi_inputs, qapi_gen_depends ]) =20 # Now go through all the outputs and add them to the right sourceset. diff --git a/trace/meson.build b/trace/meson.build index 573dd699c6..77e44fa68d 100644 --- a/trace/meson.build +++ b/trace/meson.build @@ -2,10 +2,14 @@ specific_ss.add(files('control-target.c')) =20 trace_events_files =3D [] -foreach dir : [ '.' ] + trace_events_subdirs - trace_events_file =3D meson.project_source_root() / dir / 'trace-events' +foreach path : [ '.' ] + trace_events_subdirs + qapi_trace_events + if path.contains('trace-events') + trace_events_file =3D meson.project_build_root() / 'qapi' / path + else + trace_events_file =3D meson.project_source_root() / path / 'trace-even= ts' + endif trace_events_files +=3D [ trace_events_file ] - group_name =3D dir =3D=3D '.' ? 'root' : dir.underscorify() + group_name =3D path =3D=3D '.' ? 'root' : path.underscorify() group =3D '--group=3D' + group_name fmt =3D '@0@-' + group_name + '.@1@' =20 --=20 2.31.1