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Commit 7e4b21b8 authored by Tom Zanussi's avatar Tom Zanussi Committed by Frederic Weisbecker
Browse files

perf/scripts: Add Python scripting engine 



Add base support for Python scripting to perf trace.

Signed-off-by: default avatarTom 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: default avatarFrederic Weisbecker <fweisbec@gmail.com>
parent 266fe2f2

tools/perf/Makefile

+21 −0
Original line number Diff line number Diff line
@@ -522,6 +522,19 @@ else 
	LIB_OBJS += scripts/perl/Perf-Trace-Util/Context.o

endif



ifndef NO_LIBPYTHON

PYTHON_EMBED_LDOPTS = `python-config --ldflags 2>/dev/null`

PYTHON_EMBED_CCOPTS = `python-config --cflags 2>/dev/null`

endif



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)

	BASIC_CFLAGS += -DNO_LIBPYTHON

else

	ALL_LDFLAGS += $(PYTHON_EMBED_LDOPTS)

	LIB_OBJS += util/scripting-engines/trace-event-python.o

	LIB_OBJS += scripts/python/Perf-Trace-Util/Context.o

endif



ifdef NO_DEMANGLE

	BASIC_CFLAGS += -DNO_DEMANGLE

else
@@ -899,6 +912,12 @@ util/scripting-engines/trace-event-perl.o: util/scripting-engines/trace-event-pe 
scripts/perl/Perf-Trace-Util/Context.o: scripts/perl/Perf-Trace-Util/Context.c PERF-CFLAGS

	$(QUIET_CC)$(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 $<



util/scripting-engines/trace-event-python.o: util/scripting-engines/trace-event-python.c PERF-CFLAGS

	$(QUIET_CC)$(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 $<



scripts/python/Perf-Trace-Util/Context.o: scripts/python/Perf-Trace-Util/Context.c PERF-CFLAGS

	$(QUIET_CC)$(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 $<



perf-%$X: %.o $(PERFLIBS)

	$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(LIBS)
@@ -1012,6 +1031,8 @@ install: all 
	$(INSTALL) scripts/perl/Perf-Trace-Util/lib/Perf/Trace/* -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util/lib/Perf/Trace'

	$(INSTALL) scripts/perl/*.pl -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl'

	$(INSTALL) scripts/perl/bin/* -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/bin'

	$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/python/Perf-Trace-Util/lib/Perf/Trace'

	$(INSTALL) scripts/python/Perf-Trace-Util/lib/Perf/Trace/* -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/python/Perf-Trace-Util/lib/Perf/Trace'



ifdef BUILT_INS

	$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)'

tools/perf/builtin-trace.c

+1 −0
Original line number Diff line number Diff line
@@ -44,6 +44,7 @@ static void setup_scripting(void) 
	perf_set_argv_exec_path(perf_exec_path());



	setup_perl_scripting();

	setup_python_scripting();



	scripting_ops = &default_scripting_ops;

}

tools/perf/scripts/python/Perf-Trace-Util/Context.c

0 → 100644
+88 −0
Original line number Diff line number Diff line 
/*

 * Context.c.  Python interfaces for perf trace.

 *

 * 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

 *

 */



#include <Python.h>

#include "../../../perf.h"

#include "../../../util/trace-event.h"



PyMODINIT_FUNC initperf_trace_context(void);



static PyObject *perf_trace_context_common_pc(PyObject *self, PyObject *args)

{

	static struct scripting_context *scripting_context;

	PyObject *context;

	int retval;



	if (!PyArg_ParseTuple(args, "O", &context))

		return NULL;



	scripting_context = PyCObject_AsVoidPtr(context);

	retval = common_pc(scripting_context);



	return Py_BuildValue("i", retval);

}



static PyObject *perf_trace_context_common_flags(PyObject *self,

						 PyObject *args)

{

	static struct scripting_context *scripting_context;

	PyObject *context;

	int retval;



	if (!PyArg_ParseTuple(args, "O", &context))

		return NULL;



	scripting_context = PyCObject_AsVoidPtr(context);

	retval = common_flags(scripting_context);



	return Py_BuildValue("i", retval);

}



static PyObject *perf_trace_context_common_lock_depth(PyObject *self,

						      PyObject *args)

{

	static struct scripting_context *scripting_context;

	PyObject *context;

	int retval;



	if (!PyArg_ParseTuple(args, "O", &context))

		return NULL;



	scripting_context = PyCObject_AsVoidPtr(context);

	retval = common_lock_depth(scripting_context);



	return Py_BuildValue("i", retval);

}



static PyMethodDef ContextMethods[] = {

	{ "common_pc", perf_trace_context_common_pc, METH_VARARGS,

	  "Get the common preempt count event field value."},

	{ "common_flags", perf_trace_context_common_flags, METH_VARARGS,

	  "Get the common flags event field value."},

	{ "common_lock_depth", perf_trace_context_common_lock_depth,

	  METH_VARARGS,	"Get the common lock depth event field value."},

	{ NULL, NULL, 0, NULL}

};



PyMODINIT_FUNC initperf_trace_context(void)

{

	(void) Py_InitModule("perf_trace_context", ContextMethods);

}

tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Core.py

0 → 100644
+91 −0
Original line number Diff line number Diff line 
# Core.py - Python extension for perf trace, core functions

#

# Copyright (C) 2010 by Tom Zanussi <tzanussi@gmail.com>

#

# This software may be distributed under the terms of the GNU General

# Public License ("GPL") version 2 as published by the Free Software

# Foundation.



from collections import defaultdict



def autodict():

    return defaultdict(autodict)



flag_fields = autodict()

symbolic_fields = autodict()



def define_flag_field(event_name, field_name, delim):

    flag_fields[event_name][field_name]['delim'] = delim



def define_flag_value(event_name, field_name, value, field_str):

    flag_fields[event_name][field_name]['values'][value] = field_str



def define_symbolic_field(event_name, field_name):

    # nothing to do, really

    pass



def define_symbolic_value(event_name, field_name, value, field_str):

    symbolic_fields[event_name][field_name]['values'][value] = field_str



def flag_str(event_name, field_name, value):

    string = ""



    if flag_fields[event_name][field_name]:

	print_delim = 0

        keys = flag_fields[event_name][field_name]['values'].keys()

        keys.sort()

        for idx in keys:

            if not value and not idx:

                string += flag_fields[event_name][field_name]['values'][idx]

                break

            if idx and (value & idx) == idx:

                if print_delim and flag_fields[event_name][field_name]['delim']:

                    string += " " + flag_fields[event_name][field_name]['delim'] + " "

                string += flag_fields[event_name][field_name]['values'][idx]

                print_delim = 1

                value &= ~idx



    return string



def symbol_str(event_name, field_name, value):

    string = ""



    if symbolic_fields[event_name][field_name]:

        keys = symbolic_fields[event_name][field_name]['values'].keys()

        keys.sort()

        for idx in keys:

            if not value and not idx:

		string = symbolic_fields[event_name][field_name]['values'][idx]

                break

	    if (value == idx):

		string = symbolic_fields[event_name][field_name]['values'][idx]

                break



    return string



trace_flags = { 0x00: "NONE", \

                    0x01: "IRQS_OFF", \

                    0x02: "IRQS_NOSUPPORT", \

                    0x04: "NEED_RESCHED", \

                    0x08: "HARDIRQ", \

                    0x10: "SOFTIRQ" }



def trace_flag_str(value):

    string = ""

    print_delim = 0



    keys = trace_flags.keys()



    for idx in keys:

	if not value and not idx:

	    string += "NONE"

	    break



	if idx and (value & idx) == idx:

	    if print_delim:

		string += " | ";

	    string += trace_flags[idx]

	    print_delim = 1

	    value &= ~idx



    return string

tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py

0 → 100644
+25 −0
Original line number Diff line number Diff line 
# Util.py - Python extension for perf trace, miscellaneous utility code

#

# Copyright (C) 2010 by Tom Zanussi <tzanussi@gmail.com>

#

# This software may be distributed under the terms of the GNU General

# Public License ("GPL") version 2 as published by the Free Software

# Foundation.



NSECS_PER_SEC    = 1000000000



def avg(total, n):

    return total / n



def nsecs(secs, nsecs):

    return secs * NSECS_PER_SEC + nsecs



def nsecs_secs(nsecs):

    return nsecs / NSECS_PER_SEC



def nsecs_nsecs(nsecs):

    return nsecs % NSECS_PER_SEC



def nsecs_str(nsecs):

    str = "%5u.%09u" % (nsecs_secs(nsecs), nsecs_nsecs(nsecs)),

    return str