Re: [PATCH 09/10] perf scripting python: Add auxtrace error

From: Adrian Hunter
Date: Tue May 25 2021 - 14:30:36 EST

On 25/05/21 4:03 pm, Arnaldo Carvalho de Melo wrote:
> Em Tue, May 25, 2021 at 12:51:11PM +0300, Adrian Hunter escreveu:
>> Add auxtrace_error to general python scripting.
>>
>> Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
>> ---
>> tools/perf/builtin-script.c | 13 ++++++
>> .../scripting-engines/trace-event-python.c | 42 +++++++++++++++++++
>> tools/perf/util/trace-event.h | 2 +
>> 3 files changed, 57 insertions(+)
>>
>> diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
>> index 69bce65ea430..7a7a19f52db5 100644
>> --- a/tools/perf/builtin-script.c
>> +++ b/tools/perf/builtin-script.c
>> @@ -2432,6 +2432,17 @@ static int process_switch_event(struct perf_tool *tool,
>> sample->tid);
>> }
>>
>> +static int process_auxtrace_error(struct perf_session *session,
>> + union perf_event *event)
>> +{
>> + if (scripting_ops && scripting_ops->process_auxtrace_error) {
>> + scripting_ops->process_auxtrace_error(session, event);
>> + return 0;
>> + }
>> +
>> + return perf_event__process_auxtrace_error(session, event);
>> +}
>> +
>
> Those definitions in auxtrace.h:
>
> e31f0d017ea19fce9 (Adrian Hunter 2015-04-30 17:37:27 +0300 706) #define perf_event__process_auxtrace_info 0
> e31f0d017ea19fce9 (Adrian Hunter 2015-04-30 17:37:27 +0300 707) #define perf_event__process_auxtrace 0
> e31f0d017ea19fce9 (Adrian Hunter 2015-04-30 17:37:27 +0300 708) #define perf_event__process_auxtrace_error 0
>
> came back to haunt us :-)

Sorry about that

>
> I'll try making them the usual inlines, etc

Thank you! :-)

>
> - Arnaldo
>
>
> make_minimal_O: cd . && make NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1 NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1 NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1 NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1 NO_LIBCRYPTO=1 NO_SDT=1 NO_JVMTI=1 NO_LIBZSTD=1 NO_LIBCAP=1 NO_SYSCALL_TABLE=1 FEATURES_DUMP=/var/home/acme/git/perf/tools/perf/BUILD_TEST_FEATURE_DUMP -j24 O=/tmp/tmp.rGrdpQlTCr DESTDIR=/tmp/tmp.png5u8ITR9
> cd . && make NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1 NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1 NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1 NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1 NO_LIBCRYPTO=1 NO_SDT=1 NO_JVMTI=1 NO_LIBZSTD=1 NO_LIBCAP=1 NO_SYSCALL_TABLE=1 FEATURES_DUMP=/var/home/acme/git/perf/tools/perf/BUILD_TEST_FEATURE_DUMP -j24 O=/tmp/tmp.rGrdpQlTCr DESTDIR=/tmp/tmp.png5u8ITR9
> BUILD: Doing 'make -j24' parallel build
> <SNIP>
> CC /tmp/tmp.rGrdpQlTCr/builtin-daemon.o
> In file included from util/events_stats.h:8,
> from util/evlist.h:12,
> from builtin-script.c:18:
> builtin-script.c: In function ‘process_auxtrace_error’:
> util/auxtrace.h:708:57: error: called object is not a function or function pointer
> 708 | #define perf_event__process_auxtrace_error 0
> | ^
> builtin-script.c:2443:16: note: in expansion of macro ‘perf_event__process_auxtrace_error’
> 2443 | return perf_event__process_auxtrace_error(session, event);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> MKDIR /tmp/tmp.rGrdpQlTCr/tests/
> MKDIR /tmp/tmp.rGrdpQlTCr/bench/
> CC /tmp/tmp.rGrdpQlTCr/tests/builtin-test.o
> CC /tmp/tmp.rGrdpQlTCr/bench/sched-messaging.o
> builtin-script.c:2444:1: error: control reaches end of non-void function [-Werror=return-type]
> 2444 | }
> | ^
> cc1: all warnings being treated as errors
> make[5]: *** [/var/home/acme/git/perf/tools/build/Makefile.build:96: /tmp/tmp.rGrdpQlTCr/builtin-script.o] Error 1
> make[5]: *** Waiting for unfinished jobs....
> MKDIR /tmp/tmp.rGrdpQlTCr/tests/
> CC /tmp/tmp.rGrdpQlTCr/tests/parse-events.o
> MKDIR /tmp/tmp.rGrdpQlTCr/bench/
> CC /tmp/tmp.rGrdpQlTCr/bench/sched-pipe.o
>
>
>
>> static int
>> process_lost_event(struct perf_tool *tool,
>> union perf_event *event,
>> @@ -2571,6 +2582,8 @@ static int __cmd_script(struct perf_script *script)
>> }
>> if (script->show_switch_events || (scripting_ops && scripting_ops->process_switch))
>> script->tool.context_switch = process_switch_event;
>> + if (scripting_ops && scripting_ops->process_auxtrace_error)
>> + script->tool.auxtrace_error = process_auxtrace_error;
>> if (script->show_namespace_events)
>> script->tool.namespaces = process_namespaces_event;
>> if (script->show_cgroup_events)
>> diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
>> index c422901d5344..ffc5f4cffdba 100644
>> --- a/tools/perf/util/scripting-engines/trace-event-python.c
>> +++ b/tools/perf/util/scripting-engines/trace-event-python.c
>> @@ -1014,6 +1014,11 @@ static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
>> #endif
>> }
>>
>> +static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val)
>> +{
>> + return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
>> +}
>> +
>> static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
>> {
>> return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
>> @@ -1461,6 +1466,42 @@ static void python_process_switch(union perf_event *event,
>> python_do_process_switch(event, sample, machine);
>> }
>>
>> +static void python_process_auxtrace_error(struct perf_session *session __maybe_unused,
>> + union perf_event *event)
>> +{
>> + struct perf_record_auxtrace_error *e = &event->auxtrace_error;
>> + u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
>> + const char *handler_name = "auxtrace_error";
>> + unsigned long long tm = e->time;
>> + const char *msg = e->msg;
>> + PyObject *handler, *t;
>> +
>> + handler = get_handler(handler_name);
>> + if (!handler)
>> + return;
>> +
>> + if (!e->fmt) {
>> + tm = 0;
>> + msg = (const char *)&e->time;
>> + }
>> +
>> + t = tuple_new(9);
>> +
>> + tuple_set_u32(t, 0, e->type);
>> + tuple_set_u32(t, 1, e->code);
>> + tuple_set_s32(t, 2, e->cpu);
>> + tuple_set_s32(t, 3, e->pid);
>> + tuple_set_s32(t, 4, e->tid);
>> + tuple_set_u64(t, 5, e->ip);
>> + tuple_set_u64(t, 6, tm);
>> + tuple_set_string(t, 7, msg);
>> + tuple_set_u32(t, 8, cpumode);
>> +
>> + call_object(handler, t, handler_name);
>> +
>> + Py_DECREF(t);
>> +}
>> +
>> static void get_handler_name(char *str, size_t size,
>> struct evsel *evsel)
>> {
>> @@ -1999,6 +2040,7 @@ struct scripting_ops python_scripting_ops = {
>> .stop_script = python_stop_script,
>> .process_event = python_process_event,
>> .process_switch = python_process_switch,
>> + .process_auxtrace_error = python_process_auxtrace_error,
>> .process_stat = python_process_stat,
>> .process_stat_interval = python_process_stat_interval,
>> .generate_script = python_generate_script,
>> diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
>> index 7276674e2971..35c354a15c3a 100644
>> --- a/tools/perf/util/trace-event.h
>> +++ b/tools/perf/util/trace-event.h
>> @@ -83,6 +83,8 @@ struct scripting_ops {
>> void (*process_switch)(union perf_event *event,
>> struct perf_sample *sample,
>> struct machine *machine);
>> + void (*process_auxtrace_error)(struct perf_session *session,
>> + union perf_event *event);
>> void (*process_stat)(struct perf_stat_config *config,
>> struct evsel *evsel, u64 tstamp);
>> void (*process_stat_interval)(u64 tstamp);
>> --
>> 2.17.1
>>
>