perf/scripts: Add Python scripting engine
Add base support for Python scripting to perf trace. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Keiichi KII <k-keiichi@bx.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1264580883-15324-6-git-send-email-tzanussi@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
This commit is contained in:
Tom Zanussi
Frederic Weisbecker
Родитель
266fe2f217
Коммит
7e4b21b84c
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@ -522,6 +522,19 @@ else
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LIB_OBJS += scripts/perl/Perf-Trace-Util/Context.o
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endif
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ifndef NO_LIBPYTHON
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PYTHON_EMBED_LDOPTS = `python-config --ldflags 2>/dev/null`
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PYTHON_EMBED_CCOPTS = `python-config --cflags 2>/dev/null`
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endif
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ifneq ($(shell sh -c "(echo '\#include <Python.h>'; echo 'int main(void) { Py_Initialize(); return 0; }') | $(CC) -x c - $(PYTHON_EMBED_CCOPTS) -o /dev/null $(PYTHON_EMBED_LDOPTS) > /dev/null 2>&1 && echo y"), y)
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BASIC_CFLAGS += -DNO_LIBPYTHON
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else
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ALL_LDFLAGS += $(PYTHON_EMBED_LDOPTS)
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LIB_OBJS += util/scripting-engines/trace-event-python.o
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LIB_OBJS += scripts/python/Perf-Trace-Util/Context.o
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endif
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ifdef NO_DEMANGLE
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BASIC_CFLAGS += -DNO_DEMANGLE
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else
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@ -899,6 +912,12 @@ util/scripting-engines/trace-event-perl.o: util/scripting-engines/trace-event-pe
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scripts/perl/Perf-Trace-Util/Context.o: scripts/perl/Perf-Trace-Util/Context.c PERF-CFLAGS
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$(QUIET_CC)$(CC) -o scripts/perl/Perf-Trace-Util/Context.o -c $(ALL_CFLAGS) $(PERL_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-nested-externs $<
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util/scripting-engines/trace-event-python.o: util/scripting-engines/trace-event-python.c PERF-CFLAGS
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$(QUIET_CC)$(CC) -o util/scripting-engines/trace-event-python.o -c $(ALL_CFLAGS) $(PYTHON_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-shadow $<
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scripts/python/Perf-Trace-Util/Context.o: scripts/python/Perf-Trace-Util/Context.c PERF-CFLAGS
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$(QUIET_CC)$(CC) -o scripts/python/Perf-Trace-Util/Context.o -c $(ALL_CFLAGS) $(PYTHON_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-nested-externs $<
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perf-%$X: %.o $(PERFLIBS)
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$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(LIBS)
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@ -1012,6 +1031,8 @@ install: all
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$(INSTALL) scripts/perl/Perf-Trace-Util/lib/Perf/Trace/* -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util/lib/Perf/Trace'
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$(INSTALL) scripts/perl/*.pl -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl'
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$(INSTALL) scripts/perl/bin/* -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/bin'
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$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/python/Perf-Trace-Util/lib/Perf/Trace'
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$(INSTALL) scripts/python/Perf-Trace-Util/lib/Perf/Trace/* -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/python/Perf-Trace-Util/lib/Perf/Trace'
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ifdef BUILT_INS
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$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)'
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@ -44,6 +44,7 @@ static void setup_scripting(void)
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perf_set_argv_exec_path(perf_exec_path());
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setup_perl_scripting();
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setup_python_scripting();
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scripting_ops = &default_scripting_ops;
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}
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@ -0,0 +1,88 @@
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/*
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* Context.c. Python interfaces for perf trace.
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*
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* Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <Python.h>
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#include "../../../perf.h"
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#include "../../../util/trace-event.h"
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PyMODINIT_FUNC initperf_trace_context(void);
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static PyObject *perf_trace_context_common_pc(PyObject *self, PyObject *args)
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{
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static struct scripting_context *scripting_context;
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PyObject *context;
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int retval;
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if (!PyArg_ParseTuple(args, "O", &context))
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return NULL;
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scripting_context = PyCObject_AsVoidPtr(context);
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retval = common_pc(scripting_context);
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return Py_BuildValue("i", retval);
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}
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static PyObject *perf_trace_context_common_flags(PyObject *self,
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PyObject *args)
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{
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static struct scripting_context *scripting_context;
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PyObject *context;
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int retval;
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if (!PyArg_ParseTuple(args, "O", &context))
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return NULL;
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scripting_context = PyCObject_AsVoidPtr(context);
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retval = common_flags(scripting_context);
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return Py_BuildValue("i", retval);
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}
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static PyObject *perf_trace_context_common_lock_depth(PyObject *self,
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PyObject *args)
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{
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static struct scripting_context *scripting_context;
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PyObject *context;
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int retval;
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if (!PyArg_ParseTuple(args, "O", &context))
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return NULL;
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scripting_context = PyCObject_AsVoidPtr(context);
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retval = common_lock_depth(scripting_context);
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return Py_BuildValue("i", retval);
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}
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static PyMethodDef ContextMethods[] = {
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{ "common_pc", perf_trace_context_common_pc, METH_VARARGS,
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"Get the common preempt count event field value."},
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{ "common_flags", perf_trace_context_common_flags, METH_VARARGS,
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"Get the common flags event field value."},
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{ "common_lock_depth", perf_trace_context_common_lock_depth,
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METH_VARARGS, "Get the common lock depth event field value."},
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{ NULL, NULL, 0, NULL}
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};
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PyMODINIT_FUNC initperf_trace_context(void)
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{
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(void) Py_InitModule("perf_trace_context", ContextMethods);
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}
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@ -0,0 +1,91 @@
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# Core.py - Python extension for perf trace, core functions
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#
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# Copyright (C) 2010 by Tom Zanussi <tzanussi@gmail.com>
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#
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# This software may be distributed under the terms of the GNU General
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# Public License ("GPL") version 2 as published by the Free Software
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# Foundation.
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from collections import defaultdict
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def autodict():
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return defaultdict(autodict)
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flag_fields = autodict()
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symbolic_fields = autodict()
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def define_flag_field(event_name, field_name, delim):
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flag_fields[event_name][field_name]['delim'] = delim
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def define_flag_value(event_name, field_name, value, field_str):
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flag_fields[event_name][field_name]['values'][value] = field_str
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def define_symbolic_field(event_name, field_name):
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# nothing to do, really
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pass
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def define_symbolic_value(event_name, field_name, value, field_str):
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symbolic_fields[event_name][field_name]['values'][value] = field_str
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def flag_str(event_name, field_name, value):
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string = ""
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if flag_fields[event_name][field_name]:
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print_delim = 0
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keys = flag_fields[event_name][field_name]['values'].keys()
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keys.sort()
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for idx in keys:
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if not value and not idx:
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string += flag_fields[event_name][field_name]['values'][idx]
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break
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if idx and (value & idx) == idx:
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if print_delim and flag_fields[event_name][field_name]['delim']:
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string += " " + flag_fields[event_name][field_name]['delim'] + " "
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string += flag_fields[event_name][field_name]['values'][idx]
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print_delim = 1
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value &= ~idx
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return string
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def symbol_str(event_name, field_name, value):
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string = ""
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if symbolic_fields[event_name][field_name]:
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keys = symbolic_fields[event_name][field_name]['values'].keys()
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keys.sort()
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for idx in keys:
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if not value and not idx:
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string = symbolic_fields[event_name][field_name]['values'][idx]
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break
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if (value == idx):
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string = symbolic_fields[event_name][field_name]['values'][idx]
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break
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return string
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trace_flags = { 0x00: "NONE", \
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0x01: "IRQS_OFF", \
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0x02: "IRQS_NOSUPPORT", \
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0x04: "NEED_RESCHED", \
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0x08: "HARDIRQ", \
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0x10: "SOFTIRQ" }
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def trace_flag_str(value):
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string = ""
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print_delim = 0
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keys = trace_flags.keys()
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for idx in keys:
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if not value and not idx:
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string += "NONE"
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break
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if idx and (value & idx) == idx:
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if print_delim:
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string += " | ";
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string += trace_flags[idx]
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print_delim = 1
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value &= ~idx
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return string
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@ -0,0 +1,25 @@
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# Util.py - Python extension for perf trace, miscellaneous utility code
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#
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# Copyright (C) 2010 by Tom Zanussi <tzanussi@gmail.com>
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#
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# This software may be distributed under the terms of the GNU General
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# Public License ("GPL") version 2 as published by the Free Software
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# Foundation.
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NSECS_PER_SEC = 1000000000
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def avg(total, n):
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return total / n
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def nsecs(secs, nsecs):
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return secs * NSECS_PER_SEC + nsecs
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def nsecs_secs(nsecs):
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return nsecs / NSECS_PER_SEC
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def nsecs_nsecs(nsecs):
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return nsecs % NSECS_PER_SEC
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def nsecs_str(nsecs):
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str = "%5u.%09u" % (nsecs_secs(nsecs), nsecs_nsecs(nsecs)),
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return str
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@ -0,0 +1,576 @@
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/*
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* trace-event-python. Feed trace events to an embedded Python interpreter.
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*
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* Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*
|
||||
*/
|
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|
||||
#include <Python.h>
|
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|
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#include <stdio.h>
|
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#include <stdlib.h>
|
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#include <string.h>
|
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#include <ctype.h>
|
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#include <errno.h>
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|
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#include "../../perf.h"
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#include "../util.h"
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#include "../trace-event.h"
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PyMODINIT_FUNC initperf_trace_context(void);
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#define FTRACE_MAX_EVENT \
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((1 << (sizeof(unsigned short) * 8)) - 1)
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struct event *events[FTRACE_MAX_EVENT];
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|
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#define MAX_FIELDS 64
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#define N_COMMON_FIELDS 7
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|
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extern struct scripting_context *scripting_context;
|
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|
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static char *cur_field_name;
|
||||
static int zero_flag_atom;
|
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|
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static PyObject *main_module, *main_dict;
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|
||||
static void handler_call_die(const char *handler_name)
|
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{
|
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PyErr_Print();
|
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Py_FatalError("problem in Python trace event handler");
|
||||
}
|
||||
|
||||
static void define_value(enum print_arg_type field_type,
|
||||
const char *ev_name,
|
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const char *field_name,
|
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const char *field_value,
|
||||
const char *field_str)
|
||||
{
|
||||
const char *handler_name = "define_flag_value";
|
||||
PyObject *handler, *t, *retval;
|
||||
unsigned long long value;
|
||||
unsigned n = 0;
|
||||
|
||||
if (field_type == PRINT_SYMBOL)
|
||||
handler_name = "define_symbolic_value";
|
||||
|
||||
t = PyTuple_New(MAX_FIELDS);
|
||||
if (!t)
|
||||
Py_FatalError("couldn't create Python tuple");
|
||||
|
||||
value = eval_flag(field_value);
|
||||
|
||||
PyTuple_SetItem(t, n++, PyString_FromString(ev_name));
|
||||
PyTuple_SetItem(t, n++, PyString_FromString(field_name));
|
||||
PyTuple_SetItem(t, n++, PyInt_FromLong(value));
|
||||
PyTuple_SetItem(t, n++, PyString_FromString(field_str));
|
||||
|
||||
if (_PyTuple_Resize(&t, n) == -1)
|
||||
Py_FatalError("error resizing Python tuple");
|
||||
|
||||
handler = PyDict_GetItemString(main_dict, handler_name);
|
||||
if (handler && PyCallable_Check(handler)) {
|
||||
retval = PyObject_CallObject(handler, t);
|
||||
if (retval == NULL)
|
||||
handler_call_die(handler_name);
|
||||
}
|
||||
|
||||
Py_DECREF(t);
|
||||
}
|
||||
|
||||
static void define_values(enum print_arg_type field_type,
|
||||
struct print_flag_sym *field,
|
||||
const char *ev_name,
|
||||
const char *field_name)
|
||||
{
|
||||
define_value(field_type, ev_name, field_name, field->value,
|
||||
field->str);
|
||||
|
||||
if (field->next)
|
||||
define_values(field_type, field->next, ev_name, field_name);
|
||||
}
|
||||
|
||||
static void define_field(enum print_arg_type field_type,
|
||||
const char *ev_name,
|
||||
const char *field_name,
|
||||
const char *delim)
|
||||
{
|
||||
const char *handler_name = "define_flag_field";
|
||||
PyObject *handler, *t, *retval;
|
||||
unsigned n = 0;
|
||||
|
||||
if (field_type == PRINT_SYMBOL)
|
||||
handler_name = "define_symbolic_field";
|
||||
|
||||
t = PyTuple_New(MAX_FIELDS);
|
||||
if (!t)
|
||||
Py_FatalError("couldn't create Python tuple");
|
||||
|
||||
PyTuple_SetItem(t, n++, PyString_FromString(ev_name));
|
||||
PyTuple_SetItem(t, n++, PyString_FromString(field_name));
|
||||
if (field_type == PRINT_FLAGS)
|
||||
PyTuple_SetItem(t, n++, PyString_FromString(delim));
|
||||
|
||||
if (_PyTuple_Resize(&t, n) == -1)
|
||||
Py_FatalError("error resizing Python tuple");
|
||||
|
||||
handler = PyDict_GetItemString(main_dict, handler_name);
|
||||
if (handler && PyCallable_Check(handler)) {
|
||||
retval = PyObject_CallObject(handler, t);
|
||||
if (retval == NULL)
|
||||
handler_call_die(handler_name);
|
||||
}
|
||||
|
||||
Py_DECREF(t);
|
||||
}
|
||||
|
||||
static void define_event_symbols(struct event *event,
|
||||
const char *ev_name,
|
||||
struct print_arg *args)
|
||||
{
|
||||
switch (args->type) {
|
||||
case PRINT_NULL:
|
||||
break;
|
||||
case PRINT_ATOM:
|
||||
define_value(PRINT_FLAGS, ev_name, cur_field_name, "0",
|
||||
args->atom.atom);
|
||||
zero_flag_atom = 0;
|
||||
break;
|
||||
case PRINT_FIELD:
|
||||
if (cur_field_name)
|
||||
free(cur_field_name);
|
||||
cur_field_name = strdup(args->field.name);
|
||||
break;
|
||||
case PRINT_FLAGS:
|
||||
define_event_symbols(event, ev_name, args->flags.field);
|
||||
define_field(PRINT_FLAGS, ev_name, cur_field_name,
|
||||
args->flags.delim);
|
||||
define_values(PRINT_FLAGS, args->flags.flags, ev_name,
|
||||
cur_field_name);
|
||||
break;
|
||||
case PRINT_SYMBOL:
|
||||
define_event_symbols(event, ev_name, args->symbol.field);
|
||||
define_field(PRINT_SYMBOL, ev_name, cur_field_name, NULL);
|
||||
define_values(PRINT_SYMBOL, args->symbol.symbols, ev_name,
|
||||
cur_field_name);
|
||||
break;
|
||||
case PRINT_STRING:
|
||||
break;
|
||||
case PRINT_TYPE:
|
||||
define_event_symbols(event, ev_name, args->typecast.item);
|
||||
break;
|
||||
case PRINT_OP:
|
||||
if (strcmp(args->op.op, ":") == 0)
|
||||
zero_flag_atom = 1;
|
||||
define_event_symbols(event, ev_name, args->op.left);
|
||||
define_event_symbols(event, ev_name, args->op.right);
|
||||
break;
|
||||
default:
|
||||
/* we should warn... */
|
||||
return;
|
||||
}
|
||||
|
||||
if (args->next)
|
||||
define_event_symbols(event, ev_name, args->next);
|
||||
}
|
||||
|
||||
static inline struct event *find_cache_event(int type)
|
||||
{
|
||||
static char ev_name[256];
|
||||
struct event *event;
|
||||
|
||||
if (events[type])
|
||||
return events[type];
|
||||
|
||||
events[type] = event = trace_find_event(type);
|
||||
if (!event)
|
||||
return NULL;
|
||||
|
||||
sprintf(ev_name, "%s__%s", event->system, event->name);
|
||||
|
||||
define_event_symbols(event, ev_name, event->print_fmt.args);
|
||||
|
||||
return event;
|
||||
}
|
||||
|
||||
static void python_process_event(int cpu, void *data,
|
||||
int size __unused,
|
||||
unsigned long long nsecs, char *comm)
|
||||
{
|
||||
PyObject *handler, *retval, *context, *t;
|
||||
static char handler_name[256];
|
||||
struct format_field *field;
|
||||
unsigned long long val;
|
||||
unsigned long s, ns;
|
||||
struct event *event;
|
||||
unsigned n = 0;
|
||||
int type;
|
||||
int pid;
|
||||
|
||||
t = PyTuple_New(MAX_FIELDS);
|
||||
if (!t)
|
||||
Py_FatalError("couldn't create Python tuple");
|
||||
|
||||
type = trace_parse_common_type(data);
|
||||
|
||||
event = find_cache_event(type);
|
||||
if (!event)
|
||||
die("ug! no event found for type %d", type);
|
||||
|
||||
pid = trace_parse_common_pid(data);
|
||||
|
||||
sprintf(handler_name, "%s__%s", event->system, event->name);
|
||||
|
||||
s = nsecs / NSECS_PER_SEC;
|
||||
ns = nsecs - s * NSECS_PER_SEC;
|
||||
|
||||
scripting_context->event_data = data;
|
||||
|
||||
context = PyCObject_FromVoidPtr(scripting_context, NULL);
|
||||
|
||||
PyTuple_SetItem(t, n++, PyString_FromString(handler_name));
|
||||
PyTuple_SetItem(t, n++,
|
||||
PyCObject_FromVoidPtr(scripting_context, NULL));
|
||||
PyTuple_SetItem(t, n++, PyInt_FromLong(cpu));
|
||||
PyTuple_SetItem(t, n++, PyInt_FromLong(s));
|
||||
PyTuple_SetItem(t, n++, PyInt_FromLong(ns));
|
||||
PyTuple_SetItem(t, n++, PyInt_FromLong(pid));
|
||||
PyTuple_SetItem(t, n++, PyString_FromString(comm));
|
||||
|
||||
for (field = event->format.fields; field; field = field->next) {
|
||||
if (field->flags & FIELD_IS_STRING) {
|
||||
int offset;
|
||||
if (field->flags & FIELD_IS_DYNAMIC) {
|
||||
offset = *(int *)(data + field->offset);
|
||||
offset &= 0xffff;
|
||||
} else
|
||||
offset = field->offset;
|
||||
PyTuple_SetItem(t, n++,
|
||||
PyString_FromString((char *)data + offset));
|
||||
} else { /* FIELD_IS_NUMERIC */
|
||||
val = read_size(data + field->offset, field->size);
|
||||
if (field->flags & FIELD_IS_SIGNED) {
|
||||
PyTuple_SetItem(t, n++, PyInt_FromLong(val));
|
||||
} else {
|
||||
PyTuple_SetItem(t, n++, PyInt_FromLong(val));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (_PyTuple_Resize(&t, n) == -1)
|
||||
Py_FatalError("error resizing Python tuple");
|
||||
|
||||
handler = PyDict_GetItemString(main_dict, handler_name);
|
||||
if (handler && PyCallable_Check(handler)) {
|
||||
retval = PyObject_CallObject(handler, t);
|
||||
if (retval == NULL)
|
||||
handler_call_die(handler_name);
|
||||
} else {
|
||||
handler = PyDict_GetItemString(main_dict, "trace_unhandled");
|
||||
if (handler && PyCallable_Check(handler)) {
|
||||
if (_PyTuple_Resize(&t, N_COMMON_FIELDS) == -1)
|
||||
Py_FatalError("error resizing Python tuple");
|
||||
|
||||
retval = PyObject_CallObject(handler, t);
|
||||
if (retval == NULL)
|
||||
handler_call_die("trace_unhandled");
|
||||
}
|
||||
}
|
||||
|
||||
Py_DECREF(t);
|
||||
}
|
||||
|
||||
static int run_start_sub(void)
|
||||
{
|
||||
PyObject *handler, *retval;
|
||||
int err = 0;
|
||||
|
||||
main_module = PyImport_AddModule("__main__");
|
||||
if (main_module == NULL)
|
||||
return -1;
|
||||
Py_INCREF(main_module);
|
||||
|
||||
main_dict = PyModule_GetDict(main_module);
|
||||
if (main_dict == NULL) {
|
||||
err = -1;
|
||||
goto error;
|
||||
}
|
||||
Py_INCREF(main_dict);
|
||||
|
||||
handler = PyDict_GetItemString(main_dict, "trace_begin");
|
||||
if (handler == NULL || !PyCallable_Check(handler))
|
||||
goto out;
|
||||
|
||||
retval = PyObject_CallObject(handler, NULL);
|
||||
if (retval == NULL)
|
||||
handler_call_die("trace_begin");
|
||||
|
||||
Py_DECREF(retval);
|
||||
return err;
|
||||
error:
|
||||
Py_XDECREF(main_dict);
|
||||
Py_XDECREF(main_module);
|
||||
out:
|
||||
return err;
|
||||
}
|
||||
|
||||
/*
|
||||
* Start trace script
|
||||
*/
|
||||
static int python_start_script(const char *script, int argc, const char **argv)
|
||||
{
|
||||
const char **command_line;
|
||||
char buf[PATH_MAX];
|
||||
int i, err = 0;
|
||||
FILE *fp;
|
||||
|
||||
command_line = malloc((argc + 1) * sizeof(const char *));
|
||||
command_line[0] = script;
|
||||
for (i = 1; i < argc + 1; i++)
|
||||
command_line[i] = argv[i - 1];
|
||||
|
||||
Py_Initialize();
|
||||
|
||||
initperf_trace_context();
|
||||
|
||||
PySys_SetArgv(argc + 1, (char **)command_line);
|
||||
|
||||
fp = fopen(script, "r");
|
||||
if (!fp) {
|
||||
sprintf(buf, "Can't open python script \"%s\"", script);
|
||||
perror(buf);
|
||||
err = -1;
|
||||
goto error;
|
||||
}
|
||||
|
||||
err = PyRun_SimpleFile(fp, script);
|
||||
if (err) {
|
||||
fprintf(stderr, "Error running python script %s\n", script);
|
||||
goto error;
|
||||
}
|
||||
|
||||
err = run_start_sub();
|
||||
if (err) {
|
||||
fprintf(stderr, "Error starting python script %s\n", script);
|
||||
goto error;
|
||||
}
|
||||
|
||||
free(command_line);
|
||||
fprintf(stderr, "perf trace started with Python script %s\n\n",
|
||||
script);
|
||||
|
||||
return err;
|
||||
error:
|
||||
Py_Finalize();
|
||||
free(command_line);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
/*
|
||||
* Stop trace script
|
||||
*/
|
||||
static int python_stop_script(void)
|
||||
{
|
||||
PyObject *handler, *retval;
|
||||
int err = 0;
|
||||
|
||||
handler = PyDict_GetItemString(main_dict, "trace_end");
|
||||
if (handler == NULL || !PyCallable_Check(handler))
|
||||
goto out;
|
||||
|
||||
retval = PyObject_CallObject(handler, NULL);
|
||||
if (retval == NULL)
|
||||
handler_call_die("trace_end");
|
||||
else
|
||||
Py_DECREF(retval);
|
||||
out:
|
||||
Py_XDECREF(main_dict);
|
||||
Py_XDECREF(main_module);
|
||||
Py_Finalize();
|
||||
|
||||
fprintf(stderr, "\nperf trace Python script stopped\n");
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static int python_generate_script(const char *outfile)
|
||||
{
|
||||
struct event *event = NULL;
|
||||
struct format_field *f;
|
||||
char fname[PATH_MAX];
|
||||
int not_first, count;
|
||||
FILE *ofp;
|
||||
|
||||
sprintf(fname, "%s.py", outfile);
|
||||
ofp = fopen(fname, "w");
|
||||
if (ofp == NULL) {
|
||||
fprintf(stderr, "couldn't open %s\n", fname);
|
||||
return -1;
|
||||
}
|
||||
fprintf(ofp, "# perf trace event handlers, "
|
||||
"generated by perf trace -g python\n");
|
||||
|
||||
fprintf(ofp, "# Licensed under the terms of the GNU GPL"
|
||||
" License version 2\n\n");
|
||||
|
||||
fprintf(ofp, "# The common_* event handler fields are the most useful "
|
||||
"fields common to\n");
|
||||
|
||||
fprintf(ofp, "# all events. They don't necessarily correspond to "
|
||||
"the 'common_*' fields\n");
|
||||
|
||||
fprintf(ofp, "# in the format files. Those fields not available as "
|
||||
"handler params can\n");
|
||||
|
||||
fprintf(ofp, "# be retrieved using Python functions of the form "
|
||||
"common_*(context).\n");
|
||||
|
||||
fprintf(ofp, "# See the perf-trace-python Documentation for the list "
|
||||
"of available functions.\n\n");
|
||||
|
||||
fprintf(ofp, "import os\n");
|
||||
fprintf(ofp, "import sys\n\n");
|
||||
|
||||
fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
|
||||
fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
|
||||
fprintf(ofp, "\nfrom perf_trace_context import *\n");
|
||||
fprintf(ofp, "from Core import *\n\n\n");
|
||||
|
||||
fprintf(ofp, "def trace_begin():\n");
|
||||
fprintf(ofp, "\tprint \"in trace_begin\"\n\n");
|
||||
|
||||
fprintf(ofp, "def trace_end():\n");
|
||||
fprintf(ofp, "\tprint \"in trace_end\"\n\n");
|
||||
|
||||
while ((event = trace_find_next_event(event))) {
|
||||
fprintf(ofp, "def %s__%s(", event->system, event->name);
|
||||
fprintf(ofp, "event_name, ");
|
||||
fprintf(ofp, "context, ");
|
||||
fprintf(ofp, "common_cpu,\n");
|
||||
fprintf(ofp, "\tcommon_secs, ");
|
||||
fprintf(ofp, "common_nsecs, ");
|
||||
fprintf(ofp, "common_pid, ");
|
||||
fprintf(ofp, "common_comm,\n\t");
|
||||
|
||||
not_first = 0;
|
||||
count = 0;
|
||||
|
||||
for (f = event->format.fields; f; f = f->next) {
|
||||
if (not_first++)
|
||||
fprintf(ofp, ", ");
|
||||
if (++count % 5 == 0)
|
||||
fprintf(ofp, "\n\t");
|
||||
|
||||
fprintf(ofp, "%s", f->name);
|
||||
}
|
||||
fprintf(ofp, "):\n");
|
||||
|
||||
fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
|
||||
"common_secs, common_nsecs,\n\t\t\t"
|
||||
"common_pid, common_comm)\n\n");
|
||||
|
||||
fprintf(ofp, "\t\tprint \"");
|
||||
|
||||
not_first = 0;
|
||||
count = 0;
|
||||
|
||||
for (f = event->format.fields; f; f = f->next) {
|
||||
if (not_first++)
|
||||
fprintf(ofp, ", ");
|
||||
if (count && count % 3 == 0) {
|
||||
fprintf(ofp, "\" \\\n\t\t\"");
|
||||
}
|
||||
count++;
|
||||
|
||||
fprintf(ofp, "%s=", f->name);
|
||||
if (f->flags & FIELD_IS_STRING ||
|
||||
f->flags & FIELD_IS_FLAG ||
|
||||
f->flags & FIELD_IS_SYMBOLIC)
|
||||
fprintf(ofp, "%%s");
|
||||
else if (f->flags & FIELD_IS_SIGNED)
|
||||
fprintf(ofp, "%%d");
|
||||
else
|
||||
fprintf(ofp, "%%u");
|
||||
}
|
||||
|
||||
fprintf(ofp, "\\n\" %% \\\n\t\t(");
|
||||
|
||||
not_first = 0;
|
||||
count = 0;
|
||||
|
||||
for (f = event->format.fields; f; f = f->next) {
|
||||
if (not_first++)
|
||||
fprintf(ofp, ", ");
|
||||
|
||||
if (++count % 5 == 0)
|
||||
fprintf(ofp, "\n\t\t");
|
||||
|
||||
if (f->flags & FIELD_IS_FLAG) {
|
||||
if ((count - 1) % 5 != 0) {
|
||||
fprintf(ofp, "\n\t\t");
|
||||
count = 4;
|
||||
}
|
||||
fprintf(ofp, "flag_str(\"");
|
||||
fprintf(ofp, "%s__%s\", ", event->system,
|
||||
event->name);
|
||||
fprintf(ofp, "\"%s\", %s)", f->name,
|
||||
f->name);
|
||||
} else if (f->flags & FIELD_IS_SYMBOLIC) {
|
||||
if ((count - 1) % 5 != 0) {
|
||||
fprintf(ofp, "\n\t\t");
|
||||
count = 4;
|
||||
}
|
||||
fprintf(ofp, "symbol_str(\"");
|
||||
fprintf(ofp, "%s__%s\", ", event->system,
|
||||
event->name);
|
||||
fprintf(ofp, "\"%s\", %s)", f->name,
|
||||
f->name);
|
||||
} else
|
||||
fprintf(ofp, "%s", f->name);
|
||||
}
|
||||
|
||||
fprintf(ofp, "),\n\n");
|
||||
}
|
||||
|
||||
fprintf(ofp, "def trace_unhandled(event_name, context, "
|
||||
"common_cpu, common_secs, common_nsecs,\n\t\t"
|
||||
"common_pid, common_comm):\n");
|
||||
|
||||
fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
|
||||
"common_secs, common_nsecs,\n\t\tcommon_pid, "
|
||||
"common_comm)\n\n");
|
||||
|
||||
fprintf(ofp, "def print_header("
|
||||
"event_name, cpu, secs, nsecs, pid, comm):\n"
|
||||
"\tprint \"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
|
||||
"(event_name, cpu, secs, nsecs, pid, comm),\n");
|
||||
|
||||
fclose(ofp);
|
||||
|
||||
fprintf(stderr, "generated Python script: %s\n", fname);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
struct scripting_ops python_scripting_ops = {
|
||||
.name = "Python",
|
||||
.start_script = python_start_script,
|
||||
.stop_script = python_stop_script,
|
||||
.process_event = python_process_event,
|
||||
.generate_script = python_generate_script,
|
||||
};
|
||||
|
|
@ -44,6 +44,67 @@ static void process_event_unsupported(int cpu __unused,
|
|||
{
|
||||
}
|
||||
|
||||
static void print_python_unsupported_msg(void)
|
||||
{
|
||||
fprintf(stderr, "Python scripting not supported."
|
||||
" Install libpython and rebuild perf to enable it.\n"
|
||||
"For example:\n # apt-get install python-dev (ubuntu)"
|
||||
"\n # yum install python-devel (Fedora)"
|
||||
"\n etc.\n");
|
||||
}
|
||||
|
||||
static int python_start_script_unsupported(const char *script __unused,
|
||||
int argc __unused,
|
||||
const char **argv __unused)
|
||||
{
|
||||
print_python_unsupported_msg();
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int python_generate_script_unsupported(const char *outfile __unused)
|
||||
{
|
||||
print_python_unsupported_msg();
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
struct scripting_ops python_scripting_unsupported_ops = {
|
||||
.name = "Python",
|
||||
.start_script = python_start_script_unsupported,
|
||||
.stop_script = stop_script_unsupported,
|
||||
.process_event = process_event_unsupported,
|
||||
.generate_script = python_generate_script_unsupported,
|
||||
};
|
||||
|
||||
static void register_python_scripting(struct scripting_ops *scripting_ops)
|
||||
{
|
||||
int err;
|
||||
err = script_spec_register("Python", scripting_ops);
|
||||
if (err)
|
||||
die("error registering Python script extension");
|
||||
|
||||
err = script_spec_register("py", scripting_ops);
|
||||
if (err)
|
||||
die("error registering py script extension");
|
||||
|
||||
scripting_context = malloc(sizeof(struct scripting_context));
|
||||
}
|
||||
|
||||
#ifdef NO_LIBPYTHON
|
||||
void setup_python_scripting(void)
|
||||
{
|
||||
register_python_scripting(&python_scripting_unsupported_ops);
|
||||
}
|
||||
#else
|
||||
struct scripting_ops python_scripting_ops;
|
||||
|
||||
void setup_python_scripting(void)
|
||||
{
|
||||
register_python_scripting(&python_scripting_ops);
|
||||
}
|
||||
#endif
|
||||
|
||||
static void print_perl_unsupported_msg(void)
|
||||
{
|
||||
fprintf(stderr, "Perl scripting not supported."
|
||||
|
|
|
|||
|
|
@ -280,6 +280,7 @@ struct scripting_ops {
|
|||
int script_spec_register(const char *spec, struct scripting_ops *ops);
|
||||
|
||||
void setup_perl_scripting(void);
|
||||
void setup_python_scripting(void);
|
||||
|
||||
struct scripting_context {
|
||||
void *event_data;
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче