--- /dev/null
-#define for_each_lang(scripts_dir, lang_dirent, lang_next) \
+ #include "builtin.h"
+
+ #include "perf.h"
+ #include "util/cache.h"
+ #include "util/debug.h"
+ #include "util/exec_cmd.h"
+ #include "util/header.h"
+ #include "util/parse-options.h"
+ #include "util/session.h"
+ #include "util/symbol.h"
+ #include "util/thread.h"
+ #include "util/trace-event.h"
+ #include "util/parse-options.h"
+ #include "util/util.h"
+
+ static char const *script_name;
+ static char const *generate_script_lang;
+ static bool debug_mode;
+ static u64 last_timestamp;
+ static u64 nr_unordered;
+ extern const struct option record_options[];
+
+ static int default_start_script(const char *script __unused,
+ int argc __unused,
+ const char **argv __unused)
+ {
+ return 0;
+ }
+
+ static int default_stop_script(void)
+ {
+ return 0;
+ }
+
+ static int default_generate_script(const char *outfile __unused)
+ {
+ return 0;
+ }
+
+ static struct scripting_ops default_scripting_ops = {
+ .start_script = default_start_script,
+ .stop_script = default_stop_script,
+ .process_event = print_event,
+ .generate_script = default_generate_script,
+ };
+
+ static struct scripting_ops *scripting_ops;
+
+ static void setup_scripting(void)
+ {
+ setup_perl_scripting();
+ setup_python_scripting();
+
+ scripting_ops = &default_scripting_ops;
+ }
+
+ static int cleanup_scripting(void)
+ {
+ pr_debug("\nperf script stopped\n");
+
+ return scripting_ops->stop_script();
+ }
+
+ static char const *input_name = "perf.data";
+
+ static int process_sample_event(event_t *event, struct perf_session *session)
+ {
+ struct sample_data data;
+ struct thread *thread;
+
+ memset(&data, 0, sizeof(data));
+ data.time = -1;
+ data.cpu = -1;
+ data.period = 1;
+
+ event__parse_sample(event, session->sample_type, &data);
+
+ dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld\n", event->header.misc,
+ data.pid, data.tid, data.ip, data.period);
+
+ thread = perf_session__findnew(session, event->ip.pid);
+ if (thread == NULL) {
+ pr_debug("problem processing %d event, skipping it.\n",
+ event->header.type);
+ return -1;
+ }
+
+ if (session->sample_type & PERF_SAMPLE_RAW) {
+ if (debug_mode) {
+ if (data.time < last_timestamp) {
+ pr_err("Samples misordered, previous: %llu "
+ "this: %llu\n", last_timestamp,
+ data.time);
+ nr_unordered++;
+ }
+ last_timestamp = data.time;
+ return 0;
+ }
+ /*
+ * FIXME: better resolve from pid from the struct trace_entry
+ * field, although it should be the same than this perf
+ * event pid
+ */
+ scripting_ops->process_event(data.cpu, data.raw_data,
+ data.raw_size,
+ data.time, thread->comm);
+ }
+
+ session->hists.stats.total_period += data.period;
+ return 0;
+ }
+
+ static u64 nr_lost;
+
+ static int process_lost_event(event_t *event, struct perf_session *session __used)
+ {
+ nr_lost += event->lost.lost;
+
+ return 0;
+ }
+
+ static struct perf_event_ops event_ops = {
+ .sample = process_sample_event,
+ .comm = event__process_comm,
+ .attr = event__process_attr,
+ .event_type = event__process_event_type,
+ .tracing_data = event__process_tracing_data,
+ .build_id = event__process_build_id,
+ .lost = process_lost_event,
+ .ordered_samples = true,
+ };
+
+ extern volatile int session_done;
+
+ static void sig_handler(int sig __unused)
+ {
+ session_done = 1;
+ }
+
+ static int __cmd_script(struct perf_session *session)
+ {
+ int ret;
+
+ signal(SIGINT, sig_handler);
+
+ ret = perf_session__process_events(session, &event_ops);
+
+ if (debug_mode) {
+ pr_err("Misordered timestamps: %llu\n", nr_unordered);
+ pr_err("Lost events: %llu\n", nr_lost);
+ }
+
+ return ret;
+ }
+
+ struct script_spec {
+ struct list_head node;
+ struct scripting_ops *ops;
+ char spec[0];
+ };
+
+ LIST_HEAD(script_specs);
+
+ static struct script_spec *script_spec__new(const char *spec,
+ struct scripting_ops *ops)
+ {
+ struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
+
+ if (s != NULL) {
+ strcpy(s->spec, spec);
+ s->ops = ops;
+ }
+
+ return s;
+ }
+
+ static void script_spec__delete(struct script_spec *s)
+ {
+ free(s->spec);
+ free(s);
+ }
+
+ static void script_spec__add(struct script_spec *s)
+ {
+ list_add_tail(&s->node, &script_specs);
+ }
+
+ static struct script_spec *script_spec__find(const char *spec)
+ {
+ struct script_spec *s;
+
+ list_for_each_entry(s, &script_specs, node)
+ if (strcasecmp(s->spec, spec) == 0)
+ return s;
+ return NULL;
+ }
+
+ static struct script_spec *script_spec__findnew(const char *spec,
+ struct scripting_ops *ops)
+ {
+ struct script_spec *s = script_spec__find(spec);
+
+ if (s)
+ return s;
+
+ s = script_spec__new(spec, ops);
+ if (!s)
+ goto out_delete_spec;
+
+ script_spec__add(s);
+
+ return s;
+
+ out_delete_spec:
+ script_spec__delete(s);
+
+ return NULL;
+ }
+
+ int script_spec_register(const char *spec, struct scripting_ops *ops)
+ {
+ struct script_spec *s;
+
+ s = script_spec__find(spec);
+ if (s)
+ return -1;
+
+ s = script_spec__findnew(spec, ops);
+ if (!s)
+ return -1;
+
+ return 0;
+ }
+
+ static struct scripting_ops *script_spec__lookup(const char *spec)
+ {
+ struct script_spec *s = script_spec__find(spec);
+ if (!s)
+ return NULL;
+
+ return s->ops;
+ }
+
+ static void list_available_languages(void)
+ {
+ struct script_spec *s;
+
+ fprintf(stderr, "\n");
+ fprintf(stderr, "Scripting language extensions (used in "
+ "perf script -s [spec:]script.[spec]):\n\n");
+
+ list_for_each_entry(s, &script_specs, node)
+ fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
+
+ fprintf(stderr, "\n");
+ }
+
+ static int parse_scriptname(const struct option *opt __used,
+ const char *str, int unset __used)
+ {
+ char spec[PATH_MAX];
+ const char *script, *ext;
+ int len;
+
+ if (strcmp(str, "lang") == 0) {
+ list_available_languages();
+ exit(0);
+ }
+
+ script = strchr(str, ':');
+ if (script) {
+ len = script - str;
+ if (len >= PATH_MAX) {
+ fprintf(stderr, "invalid language specifier");
+ return -1;
+ }
+ strncpy(spec, str, len);
+ spec[len] = '\0';
+ scripting_ops = script_spec__lookup(spec);
+ if (!scripting_ops) {
+ fprintf(stderr, "invalid language specifier");
+ return -1;
+ }
+ script++;
+ } else {
+ script = str;
+ ext = strrchr(script, '.');
+ if (!ext) {
+ fprintf(stderr, "invalid script extension");
+ return -1;
+ }
+ scripting_ops = script_spec__lookup(++ext);
+ if (!scripting_ops) {
+ fprintf(stderr, "invalid script extension");
+ return -1;
+ }
+ }
+
+ script_name = strdup(script);
+
+ return 0;
+ }
+
- if (lang_dirent.d_type == DT_DIR && \
++/* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
++static int is_directory(const char *base_path, const struct dirent *dent)
++{
++ char path[PATH_MAX];
++ struct stat st;
++
++ sprintf(path, "%s/%s", base_path, dent->d_name);
++ if (stat(path, &st))
++ return 0;
++
++ return S_ISDIR(st.st_mode);
++}
++
++#define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
+ while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
+ lang_next) \
-#define for_each_script(lang_dir, script_dirent, script_next) \
++ if ((lang_dirent.d_type == DT_DIR || \
++ (lang_dirent.d_type == DT_UNKNOWN && \
++ is_directory(scripts_path, &lang_dirent))) && \
+ (strcmp(lang_dirent.d_name, ".")) && \
+ (strcmp(lang_dirent.d_name, "..")))
+
- if (script_dirent.d_type != DT_DIR)
++#define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
+ while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
+ script_next) \
- for_each_lang(scripts_dir, lang_dirent, lang_next) {
++ if (script_dirent.d_type != DT_DIR && \
++ (script_dirent.d_type != DT_UNKNOWN || \
++ !is_directory(lang_path, &script_dirent)))
+
+
+ #define RECORD_SUFFIX "-record"
+ #define REPORT_SUFFIX "-report"
+
+ struct script_desc {
+ struct list_head node;
+ char *name;
+ char *half_liner;
+ char *args;
+ };
+
+ LIST_HEAD(script_descs);
+
+ static struct script_desc *script_desc__new(const char *name)
+ {
+ struct script_desc *s = zalloc(sizeof(*s));
+
+ if (s != NULL && name)
+ s->name = strdup(name);
+
+ return s;
+ }
+
+ static void script_desc__delete(struct script_desc *s)
+ {
+ free(s->name);
+ free(s->half_liner);
+ free(s->args);
+ free(s);
+ }
+
+ static void script_desc__add(struct script_desc *s)
+ {
+ list_add_tail(&s->node, &script_descs);
+ }
+
+ static struct script_desc *script_desc__find(const char *name)
+ {
+ struct script_desc *s;
+
+ list_for_each_entry(s, &script_descs, node)
+ if (strcasecmp(s->name, name) == 0)
+ return s;
+ return NULL;
+ }
+
+ static struct script_desc *script_desc__findnew(const char *name)
+ {
+ struct script_desc *s = script_desc__find(name);
+
+ if (s)
+ return s;
+
+ s = script_desc__new(name);
+ if (!s)
+ goto out_delete_desc;
+
+ script_desc__add(s);
+
+ return s;
+
+ out_delete_desc:
+ script_desc__delete(s);
+
+ return NULL;
+ }
+
+ static char *ends_with(char *str, const char *suffix)
+ {
+ size_t suffix_len = strlen(suffix);
+ char *p = str;
+
+ if (strlen(str) > suffix_len) {
+ p = str + strlen(str) - suffix_len;
+ if (!strncmp(p, suffix, suffix_len))
+ return p;
+ }
+
+ return NULL;
+ }
+
+ static char *ltrim(char *str)
+ {
+ int len = strlen(str);
+
+ while (len && isspace(*str)) {
+ len--;
+ str++;
+ }
+
+ return str;
+ }
+
+ static int read_script_info(struct script_desc *desc, const char *filename)
+ {
+ char line[BUFSIZ], *p;
+ FILE *fp;
+
+ fp = fopen(filename, "r");
+ if (!fp)
+ return -1;
+
+ while (fgets(line, sizeof(line), fp)) {
+ p = ltrim(line);
+ if (strlen(p) == 0)
+ continue;
+ if (*p != '#')
+ continue;
+ p++;
+ if (strlen(p) && *p == '!')
+ continue;
+
+ p = ltrim(p);
+ if (strlen(p) && p[strlen(p) - 1] == '\n')
+ p[strlen(p) - 1] = '\0';
+
+ if (!strncmp(p, "description:", strlen("description:"))) {
+ p += strlen("description:");
+ desc->half_liner = strdup(ltrim(p));
+ continue;
+ }
+
+ if (!strncmp(p, "args:", strlen("args:"))) {
+ p += strlen("args:");
+ desc->args = strdup(ltrim(p));
+ continue;
+ }
+ }
+
+ fclose(fp);
+
+ return 0;
+ }
+
+ static int list_available_scripts(const struct option *opt __used,
+ const char *s __used, int unset __used)
+ {
+ struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
+ char scripts_path[MAXPATHLEN];
+ DIR *scripts_dir, *lang_dir;
+ char script_path[MAXPATHLEN];
+ char lang_path[MAXPATHLEN];
+ struct script_desc *desc;
+ char first_half[BUFSIZ];
+ char *script_root;
+ char *str;
+
+ snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
+
+ scripts_dir = opendir(scripts_path);
+ if (!scripts_dir)
+ return -1;
+
- for_each_script(lang_dir, script_dirent, script_next) {
++ for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
+ snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
+ lang_dirent.d_name);
+ lang_dir = opendir(lang_path);
+ if (!lang_dir)
+ continue;
+
- for_each_lang(scripts_dir, lang_dirent, lang_next) {
++ for_each_script(lang_path, lang_dir, script_dirent, script_next) {
+ script_root = strdup(script_dirent.d_name);
+ str = ends_with(script_root, REPORT_SUFFIX);
+ if (str) {
+ *str = '\0';
+ desc = script_desc__findnew(script_root);
+ snprintf(script_path, MAXPATHLEN, "%s/%s",
+ lang_path, script_dirent.d_name);
+ read_script_info(desc, script_path);
+ }
+ free(script_root);
+ }
+ }
+
+ fprintf(stdout, "List of available trace scripts:\n");
+ list_for_each_entry(desc, &script_descs, node) {
+ sprintf(first_half, "%s %s", desc->name,
+ desc->args ? desc->args : "");
+ fprintf(stdout, " %-36s %s\n", first_half,
+ desc->half_liner ? desc->half_liner : "");
+ }
+
+ exit(0);
+ }
+
+ static char *get_script_path(const char *script_root, const char *suffix)
+ {
+ struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
+ char scripts_path[MAXPATHLEN];
+ char script_path[MAXPATHLEN];
+ DIR *scripts_dir, *lang_dir;
+ char lang_path[MAXPATHLEN];
+ char *str, *__script_root;
+ char *path = NULL;
+
+ snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
+
+ scripts_dir = opendir(scripts_path);
+ if (!scripts_dir)
+ return NULL;
+
- for_each_script(lang_dir, script_dirent, script_next) {
++ for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
+ snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
+ lang_dirent.d_name);
+ lang_dir = opendir(lang_path);
+ if (!lang_dir)
+ continue;
+
++ for_each_script(lang_path, lang_dir, script_dirent, script_next) {
+ __script_root = strdup(script_dirent.d_name);
+ str = ends_with(__script_root, suffix);
+ if (str) {
+ *str = '\0';
+ if (strcmp(__script_root, script_root))
+ continue;
+ snprintf(script_path, MAXPATHLEN, "%s/%s",
+ lang_path, script_dirent.d_name);
+ path = strdup(script_path);
+ free(__script_root);
+ break;
+ }
+ free(__script_root);
+ }
+ }
+
+ return path;
+ }
+
+ static bool is_top_script(const char *script_path)
+ {
+ return ends_with((char *)script_path, "top") == NULL ? false : true;
+ }
+
+ static int has_required_arg(char *script_path)
+ {
+ struct script_desc *desc;
+ int n_args = 0;
+ char *p;
+
+ desc = script_desc__new(NULL);
+
+ if (read_script_info(desc, script_path))
+ goto out;
+
+ if (!desc->args)
+ goto out;
+
+ for (p = desc->args; *p; p++)
+ if (*p == '<')
+ n_args++;
+ out:
+ script_desc__delete(desc);
+
+ return n_args;
+ }
+
+ static const char * const script_usage[] = {
+ "perf script [<options>]",
+ "perf script [<options>] record <script> [<record-options>] <command>",
+ "perf script [<options>] report <script> [script-args]",
+ "perf script [<options>] <script> [<record-options>] <command>",
+ "perf script [<options>] <top-script> [script-args]",
+ NULL
+ };
+
+ static const struct option options[] = {
+ OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
+ "dump raw trace in ASCII"),
+ OPT_INCR('v', "verbose", &verbose,
+ "be more verbose (show symbol address, etc)"),
+ OPT_BOOLEAN('L', "Latency", &latency_format,
+ "show latency attributes (irqs/preemption disabled, etc)"),
+ OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
+ list_available_scripts),
+ OPT_CALLBACK('s', "script", NULL, "name",
+ "script file name (lang:script name, script name, or *)",
+ parse_scriptname),
+ OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
+ "generate perf-script.xx script in specified language"),
+ OPT_STRING('i', "input", &input_name, "file",
+ "input file name"),
+ OPT_BOOLEAN('d', "debug-mode", &debug_mode,
+ "do various checks like samples ordering and lost events"),
+
+ OPT_END()
+ };
+
+ static bool have_cmd(int argc, const char **argv)
+ {
+ char **__argv = malloc(sizeof(const char *) * argc);
+
+ if (!__argv)
+ die("malloc");
+ memcpy(__argv, argv, sizeof(const char *) * argc);
+ argc = parse_options(argc, (const char **)__argv, record_options,
+ NULL, PARSE_OPT_STOP_AT_NON_OPTION);
+ free(__argv);
+
+ return argc != 0;
+ }
+
+ int cmd_script(int argc, const char **argv, const char *prefix __used)
+ {
+ char *rec_script_path = NULL;
+ char *rep_script_path = NULL;
+ struct perf_session *session;
+ char *script_path = NULL;
+ const char **__argv;
+ bool system_wide;
+ int i, j, err;
+
+ setup_scripting();
+
+ argc = parse_options(argc, argv, options, script_usage,
+ PARSE_OPT_STOP_AT_NON_OPTION);
+
+ if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
+ rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
+ if (!rec_script_path)
+ return cmd_record(argc, argv, NULL);
+ }
+
+ if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
+ rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
+ if (!rep_script_path) {
+ fprintf(stderr,
+ "Please specify a valid report script"
+ "(see 'perf script -l' for listing)\n");
+ return -1;
+ }
+ }
+
+ /* make sure PERF_EXEC_PATH is set for scripts */
+ perf_set_argv_exec_path(perf_exec_path());
+
+ if (argc && !script_name && !rec_script_path && !rep_script_path) {
+ int live_pipe[2];
+ int rep_args;
+ pid_t pid;
+
+ rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
+ rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
+
+ if (!rec_script_path && !rep_script_path) {
+ fprintf(stderr, " Couldn't find script %s\n\n See perf"
+ " script -l for available scripts.\n", argv[0]);
+ usage_with_options(script_usage, options);
+ }
+
+ if (is_top_script(argv[0])) {
+ rep_args = argc - 1;
+ } else {
+ int rec_args;
+
+ rep_args = has_required_arg(rep_script_path);
+ rec_args = (argc - 1) - rep_args;
+ if (rec_args < 0) {
+ fprintf(stderr, " %s script requires options."
+ "\n\n See perf script -l for available "
+ "scripts and options.\n", argv[0]);
+ usage_with_options(script_usage, options);
+ }
+ }
+
+ if (pipe(live_pipe) < 0) {
+ perror("failed to create pipe");
+ exit(-1);
+ }
+
+ pid = fork();
+ if (pid < 0) {
+ perror("failed to fork");
+ exit(-1);
+ }
+
+ if (!pid) {
+ system_wide = true;
+ j = 0;
+
+ dup2(live_pipe[1], 1);
+ close(live_pipe[0]);
+
+ if (!is_top_script(argv[0]))
+ system_wide = !have_cmd(argc - rep_args,
+ &argv[rep_args]);
+
+ __argv = malloc((argc + 6) * sizeof(const char *));
+ if (!__argv)
+ die("malloc");
+
+ __argv[j++] = "/bin/sh";
+ __argv[j++] = rec_script_path;
+ if (system_wide)
+ __argv[j++] = "-a";
+ __argv[j++] = "-q";
+ __argv[j++] = "-o";
+ __argv[j++] = "-";
+ for (i = rep_args + 1; i < argc; i++)
+ __argv[j++] = argv[i];
+ __argv[j++] = NULL;
+
+ execvp("/bin/sh", (char **)__argv);
+ free(__argv);
+ exit(-1);
+ }
+
+ dup2(live_pipe[0], 0);
+ close(live_pipe[1]);
+
+ __argv = malloc((argc + 4) * sizeof(const char *));
+ if (!__argv)
+ die("malloc");
+ j = 0;
+ __argv[j++] = "/bin/sh";
+ __argv[j++] = rep_script_path;
+ for (i = 1; i < rep_args + 1; i++)
+ __argv[j++] = argv[i];
+ __argv[j++] = "-i";
+ __argv[j++] = "-";
+ __argv[j++] = NULL;
+
+ execvp("/bin/sh", (char **)__argv);
+ free(__argv);
+ exit(-1);
+ }
+
+ if (rec_script_path)
+ script_path = rec_script_path;
+ if (rep_script_path)
+ script_path = rep_script_path;
+
+ if (script_path) {
+ system_wide = false;
+ j = 0;
+
+ if (rec_script_path)
+ system_wide = !have_cmd(argc - 1, &argv[1]);
+
+ __argv = malloc((argc + 2) * sizeof(const char *));
+ if (!__argv)
+ die("malloc");
+ __argv[j++] = "/bin/sh";
+ __argv[j++] = script_path;
+ if (system_wide)
+ __argv[j++] = "-a";
+ for (i = 2; i < argc; i++)
+ __argv[j++] = argv[i];
+ __argv[j++] = NULL;
+
+ execvp("/bin/sh", (char **)__argv);
+ free(__argv);
+ exit(-1);
+ }
+
+ if (symbol__init() < 0)
+ return -1;
+ if (!script_name)
+ setup_pager();
+
+ session = perf_session__new(input_name, O_RDONLY, 0, false);
+ if (session == NULL)
+ return -ENOMEM;
+
+ if (strcmp(input_name, "-") &&
+ !perf_session__has_traces(session, "record -R"))
+ return -EINVAL;
+
+ if (generate_script_lang) {
+ struct stat perf_stat;
+
+ int input = open(input_name, O_RDONLY);
+ if (input < 0) {
+ perror("failed to open file");
+ exit(-1);
+ }
+
+ err = fstat(input, &perf_stat);
+ if (err < 0) {
+ perror("failed to stat file");
+ exit(-1);
+ }
+
+ if (!perf_stat.st_size) {
+ fprintf(stderr, "zero-sized file, nothing to do!\n");
+ exit(0);
+ }
+
+ scripting_ops = script_spec__lookup(generate_script_lang);
+ if (!scripting_ops) {
+ fprintf(stderr, "invalid language specifier");
+ return -1;
+ }
+
+ err = scripting_ops->generate_script("perf-script");
+ goto out;
+ }
+
+ if (script_name) {
+ err = scripting_ops->start_script(script_name, argc, argv);
+ if (err)
+ goto out;
+ pr_debug("perf script started with script %s\n\n", script_name);
+ }
+
+ err = __cmd_script(session);
+
+ perf_session__delete(session);
+ cleanup_scripting();
+ out:
+ return err;
+ }
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff