You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
717 lines
15 KiB
717 lines
15 KiB
#include "builtin.h"
|
|
|
|
#include "util/util.h"
|
|
#include "util/cache.h"
|
|
#include "util/symbol.h"
|
|
#include "util/thread.h"
|
|
#include "util/header.h"
|
|
#include "util/exec_cmd.h"
|
|
#include "util/trace-event.h"
|
|
#include "util/session.h"
|
|
|
|
static char const *script_name;
|
|
static char const *generate_script_lang;
|
|
static bool debug_ordering;
|
|
static u64 last_timestamp;
|
|
|
|
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)
|
|
{
|
|
/* make sure PERF_EXEC_PATH is set for scripts */
|
|
perf_set_argv_exec_path(perf_exec_path());
|
|
|
|
setup_perl_scripting();
|
|
setup_python_scripting();
|
|
|
|
scripting_ops = &default_scripting_ops;
|
|
}
|
|
|
|
static int cleanup_scripting(void)
|
|
{
|
|
pr_debug("\nperf trace script stopped\n");
|
|
|
|
return scripting_ops->stop_script();
|
|
}
|
|
|
|
#include "util/parse-options.h"
|
|
|
|
#include "perf.h"
|
|
#include "util/debug.h"
|
|
|
|
#include "util/trace-event.h"
|
|
#include "util/exec_cmd.h"
|
|
|
|
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_ordering) {
|
|
if (data.time < last_timestamp) {
|
|
pr_err("Samples misordered, previous: %llu "
|
|
"this: %llu\n", last_timestamp,
|
|
data.time);
|
|
}
|
|
last_timestamp = data.time;
|
|
}
|
|
/*
|
|
* 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 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,
|
|
.ordered_samples = true,
|
|
};
|
|
|
|
extern volatile int session_done;
|
|
|
|
static void sig_handler(int sig __unused)
|
|
{
|
|
session_done = 1;
|
|
}
|
|
|
|
static int __cmd_trace(struct perf_session *session)
|
|
{
|
|
signal(SIGINT, sig_handler);
|
|
|
|
return perf_session__process_events(session, &event_ops);
|
|
}
|
|
|
|
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 trace -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 = strchr(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;
|
|
}
|
|
|
|
#define for_each_lang(scripts_dir, lang_dirent, lang_next) \
|
|
while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
|
|
lang_next) \
|
|
if (lang_dirent.d_type == DT_DIR && \
|
|
(strcmp(lang_dirent.d_name, ".")) && \
|
|
(strcmp(lang_dirent.d_name, "..")))
|
|
|
|
#define for_each_script(lang_dir, script_dirent, script_next) \
|
|
while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
|
|
script_next) \
|
|
if (script_dirent.d_type != DT_DIR)
|
|
|
|
|
|
#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)
|
|
s->name = strdup(name);
|
|
|
|
return s;
|
|
}
|
|
|
|
static void script_desc__delete(struct script_desc *s)
|
|
{
|
|
free(s->name);
|
|
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_lang(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_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_lang(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_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 const char * const trace_usage[] = {
|
|
"perf trace [<options>] <command>",
|
|
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-trace.xx script in specified language"),
|
|
OPT_STRING('i', "input", &input_name, "file",
|
|
"input file name"),
|
|
OPT_BOOLEAN('d', "debug-ordering", &debug_ordering,
|
|
"check that samples time ordering is monotonic"),
|
|
|
|
OPT_END()
|
|
};
|
|
|
|
int cmd_trace(int argc, const char **argv, const char *prefix __used)
|
|
{
|
|
struct perf_session *session;
|
|
const char *suffix = NULL;
|
|
const char **__argv;
|
|
char *script_path;
|
|
int i, err;
|
|
|
|
if (argc >= 2 && strncmp(argv[1], "rec", strlen("rec")) == 0) {
|
|
if (argc < 3) {
|
|
fprintf(stderr,
|
|
"Please specify a record script\n");
|
|
return -1;
|
|
}
|
|
suffix = RECORD_SUFFIX;
|
|
}
|
|
|
|
if (argc >= 2 && strncmp(argv[1], "rep", strlen("rep")) == 0) {
|
|
if (argc < 3) {
|
|
fprintf(stderr,
|
|
"Please specify a report script\n");
|
|
return -1;
|
|
}
|
|
suffix = REPORT_SUFFIX;
|
|
}
|
|
|
|
if (!suffix && argc >= 2 && strncmp(argv[1], "-", strlen("-")) != 0) {
|
|
char *record_script_path, *report_script_path;
|
|
int live_pipe[2];
|
|
pid_t pid;
|
|
|
|
record_script_path = get_script_path(argv[1], RECORD_SUFFIX);
|
|
if (!record_script_path) {
|
|
fprintf(stderr, "record script not found\n");
|
|
return -1;
|
|
}
|
|
|
|
report_script_path = get_script_path(argv[1], REPORT_SUFFIX);
|
|
if (!report_script_path) {
|
|
fprintf(stderr, "report script not found\n");
|
|
return -1;
|
|
}
|
|
|
|
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) {
|
|
dup2(live_pipe[1], 1);
|
|
close(live_pipe[0]);
|
|
|
|
__argv = malloc(5 * sizeof(const char *));
|
|
__argv[0] = "/bin/sh";
|
|
__argv[1] = record_script_path;
|
|
__argv[2] = "-o";
|
|
__argv[3] = "-";
|
|
__argv[4] = NULL;
|
|
|
|
execvp("/bin/sh", (char **)__argv);
|
|
exit(-1);
|
|
}
|
|
|
|
dup2(live_pipe[0], 0);
|
|
close(live_pipe[1]);
|
|
|
|
__argv = malloc((argc + 3) * sizeof(const char *));
|
|
__argv[0] = "/bin/sh";
|
|
__argv[1] = report_script_path;
|
|
for (i = 2; i < argc; i++)
|
|
__argv[i] = argv[i];
|
|
__argv[i++] = "-i";
|
|
__argv[i++] = "-";
|
|
__argv[i++] = NULL;
|
|
|
|
execvp("/bin/sh", (char **)__argv);
|
|
exit(-1);
|
|
}
|
|
|
|
if (suffix) {
|
|
script_path = get_script_path(argv[2], suffix);
|
|
if (!script_path) {
|
|
fprintf(stderr, "script not found\n");
|
|
return -1;
|
|
}
|
|
|
|
__argv = malloc((argc + 1) * sizeof(const char *));
|
|
__argv[0] = "/bin/sh";
|
|
__argv[1] = script_path;
|
|
for (i = 3; i < argc; i++)
|
|
__argv[i - 1] = argv[i];
|
|
__argv[argc - 1] = NULL;
|
|
|
|
execvp("/bin/sh", (char **)__argv);
|
|
exit(-1);
|
|
}
|
|
|
|
setup_scripting();
|
|
|
|
argc = parse_options(argc, argv, options, trace_usage,
|
|
PARSE_OPT_STOP_AT_NON_OPTION);
|
|
|
|
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-trace");
|
|
goto out;
|
|
}
|
|
|
|
if (script_name) {
|
|
err = scripting_ops->start_script(script_name, argc, argv);
|
|
if (err)
|
|
goto out;
|
|
pr_debug("perf trace started with script %s\n\n", script_name);
|
|
}
|
|
|
|
err = __cmd_trace(session);
|
|
|
|
perf_session__delete(session);
|
|
cleanup_scripting();
|
|
out:
|
|
return err;
|
|
}
|
|
|