194 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * trace-event-scripting. Scripting engine common and initialization code.4 *5 * Copyright (C) 2009-2010 Tom Zanussi <tzanussi@gmail.com>6 */7 8#include <stdio.h>9#include <stdlib.h>10#include <string.h>11#include <errno.h>12#ifdef HAVE_LIBTRACEEVENT13#include <traceevent/event-parse.h>14#endif15 16#include "debug.h"17#include "trace-event.h"18#include "evsel.h"19#include <linux/zalloc.h>20#include "util/sample.h"21 22struct scripting_context *scripting_context;23 24void scripting_context__update(struct scripting_context *c,25 union perf_event *event,26 struct perf_sample *sample,27 struct evsel *evsel,28 struct addr_location *al,29 struct addr_location *addr_al)30{31 c->event_data = sample->raw_data;32 c->pevent = NULL;33#ifdef HAVE_LIBTRACEEVENT34 if (evsel->tp_format)35 c->pevent = evsel->tp_format->tep;36#endif37 c->event = event;38 c->sample = sample;39 c->evsel = evsel;40 c->al = al;41 c->addr_al = addr_al;42}43 44static int flush_script_unsupported(void)45{46 return 0;47}48 49static int stop_script_unsupported(void)50{51 return 0;52}53 54static void process_event_unsupported(union perf_event *event __maybe_unused,55 struct perf_sample *sample __maybe_unused,56 struct evsel *evsel __maybe_unused,57 struct addr_location *al __maybe_unused,58 struct addr_location *addr_al __maybe_unused)59{60}61 62static void print_python_unsupported_msg(void)63{64 fprintf(stderr, "Python scripting not supported."65 " Install libpython and rebuild perf to enable it.\n"66 "For example:\n # apt-get install python-dev (ubuntu)"67 "\n # yum install python-devel (Fedora)"68 "\n etc.\n");69}70 71static int python_start_script_unsupported(const char *script __maybe_unused,72 int argc __maybe_unused,73 const char **argv __maybe_unused,74 struct perf_session *session __maybe_unused)75{76 print_python_unsupported_msg();77 78 return -1;79}80 81static int python_generate_script_unsupported(struct tep_handle *pevent82 __maybe_unused,83 const char *outfile84 __maybe_unused)85{86 print_python_unsupported_msg();87 88 return -1;89}90 91struct scripting_ops python_scripting_unsupported_ops = {92 .name = "Python",93 .dirname = "python",94 .start_script = python_start_script_unsupported,95 .flush_script = flush_script_unsupported,96 .stop_script = stop_script_unsupported,97 .process_event = process_event_unsupported,98 .generate_script = python_generate_script_unsupported,99};100 101static void register_python_scripting(struct scripting_ops *scripting_ops)102{103 if (scripting_context == NULL)104 scripting_context = malloc(sizeof(*scripting_context));105 106 if (scripting_context == NULL ||107 script_spec_register("Python", scripting_ops) ||108 script_spec_register("py", scripting_ops)) {109 pr_err("Error registering Python script extension: disabling it\n");110 zfree(&scripting_context);111 }112}113 114#ifndef HAVE_LIBPYTHON_SUPPORT115void setup_python_scripting(void)116{117 register_python_scripting(&python_scripting_unsupported_ops);118}119#else120extern struct scripting_ops python_scripting_ops;121 122void setup_python_scripting(void)123{124 register_python_scripting(&python_scripting_ops);125}126#endif127 128#ifdef HAVE_LIBTRACEEVENT129static void print_perl_unsupported_msg(void)130{131 fprintf(stderr, "Perl scripting not supported."132 " Install libperl and rebuild perf to enable it.\n"133 "For example:\n # apt-get install libperl-dev (ubuntu)"134 "\n # yum install 'perl(ExtUtils::Embed)' (Fedora)"135 "\n etc.\n");136}137 138static int perl_start_script_unsupported(const char *script __maybe_unused,139 int argc __maybe_unused,140 const char **argv __maybe_unused,141 struct perf_session *session __maybe_unused)142{143 print_perl_unsupported_msg();144 145 return -1;146}147 148static int perl_generate_script_unsupported(struct tep_handle *pevent149 __maybe_unused,150 const char *outfile __maybe_unused)151{152 print_perl_unsupported_msg();153 154 return -1;155}156 157struct scripting_ops perl_scripting_unsupported_ops = {158 .name = "Perl",159 .dirname = "perl",160 .start_script = perl_start_script_unsupported,161 .flush_script = flush_script_unsupported,162 .stop_script = stop_script_unsupported,163 .process_event = process_event_unsupported,164 .generate_script = perl_generate_script_unsupported,165};166 167static void register_perl_scripting(struct scripting_ops *scripting_ops)168{169 if (scripting_context == NULL)170 scripting_context = malloc(sizeof(*scripting_context));171 172 if (scripting_context == NULL ||173 script_spec_register("Perl", scripting_ops) ||174 script_spec_register("pl", scripting_ops)) {175 pr_err("Error registering Perl script extension: disabling it\n");176 zfree(&scripting_context);177 }178}179 180#ifndef HAVE_LIBPERL_SUPPORT181void setup_perl_scripting(void)182{183 register_perl_scripting(&perl_scripting_unsupported_ops);184}185#else186extern struct scripting_ops perl_scripting_ops;187 188void setup_perl_scripting(void)189{190 register_perl_scripting(&perl_scripting_ops);191}192#endif193#endif194