perf: Rename 'perf trace' to 'perf script'
Free the perf trace name space and rename the trace to 'script' which is a better match for the scripting engine. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ingo Molnar
committed by
Thomas Gleixner
Thomas Gleixner
parent
e53beacd23
commit
133dc4c39c
826
tools/perf/builtin-script.c
Normal file
826
tools/perf/builtin-script.c
Normal file
@@ -0,0 +1,826 @@
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#include "builtin.h"
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#include "perf.h"
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#include "util/cache.h"
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#include "util/debug.h"
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#include "util/exec_cmd.h"
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#include "util/header.h"
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#include "util/parse-options.h"
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#include "util/session.h"
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#include "util/symbol.h"
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#include "util/thread.h"
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#include "util/trace-event.h"
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#include "util/parse-options.h"
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#include "util/util.h"
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static char const *script_name;
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static char const *generate_script_lang;
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static bool debug_mode;
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static u64 last_timestamp;
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static u64 nr_unordered;
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extern const struct option record_options[];
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static int default_start_script(const char *script __unused,
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int argc __unused,
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const char **argv __unused)
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{
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return 0;
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}
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static int default_stop_script(void)
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{
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return 0;
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}
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static int default_generate_script(const char *outfile __unused)
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{
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return 0;
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}
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static struct scripting_ops default_scripting_ops = {
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.start_script = default_start_script,
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.stop_script = default_stop_script,
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.process_event = print_event,
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.generate_script = default_generate_script,
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};
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static struct scripting_ops *scripting_ops;
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static void setup_scripting(void)
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{
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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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static int cleanup_scripting(void)
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{
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pr_debug("\nperf script stopped\n");
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return scripting_ops->stop_script();
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}
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static char const *input_name = "perf.data";
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static int process_sample_event(event_t *event, struct perf_session *session)
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{
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struct sample_data data;
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struct thread *thread;
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memset(&data, 0, sizeof(data));
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data.time = -1;
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data.cpu = -1;
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data.period = 1;
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event__parse_sample(event, session->sample_type, &data);
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dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld\n", event->header.misc,
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data.pid, data.tid, data.ip, data.period);
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thread = perf_session__findnew(session, event->ip.pid);
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if (thread == NULL) {
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pr_debug("problem processing %d event, skipping it.\n",
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event->header.type);
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return -1;
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}
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if (session->sample_type & PERF_SAMPLE_RAW) {
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if (debug_mode) {
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if (data.time < last_timestamp) {
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pr_err("Samples misordered, previous: %llu "
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"this: %llu\n", last_timestamp,
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data.time);
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nr_unordered++;
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}
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last_timestamp = data.time;
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return 0;
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}
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/*
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* FIXME: better resolve from pid from the struct trace_entry
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* field, although it should be the same than this perf
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* event pid
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*/
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scripting_ops->process_event(data.cpu, data.raw_data,
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data.raw_size,
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data.time, thread->comm);
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}
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session->hists.stats.total_period += data.period;
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return 0;
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}
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static u64 nr_lost;
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static int process_lost_event(event_t *event, struct perf_session *session __used)
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{
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nr_lost += event->lost.lost;
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return 0;
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}
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static struct perf_event_ops event_ops = {
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.sample = process_sample_event,
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.comm = event__process_comm,
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.attr = event__process_attr,
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.event_type = event__process_event_type,
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.tracing_data = event__process_tracing_data,
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.build_id = event__process_build_id,
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.lost = process_lost_event,
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.ordered_samples = true,
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};
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extern volatile int session_done;
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static void sig_handler(int sig __unused)
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{
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session_done = 1;
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}
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static int __cmd_script(struct perf_session *session)
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{
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int ret;
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signal(SIGINT, sig_handler);
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ret = perf_session__process_events(session, &event_ops);
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if (debug_mode) {
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pr_err("Misordered timestamps: %llu\n", nr_unordered);
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pr_err("Lost events: %llu\n", nr_lost);
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}
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return ret;
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}
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struct script_spec {
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struct list_head node;
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struct scripting_ops *ops;
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char spec[0];
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};
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LIST_HEAD(script_specs);
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static struct script_spec *script_spec__new(const char *spec,
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struct scripting_ops *ops)
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{
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struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
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if (s != NULL) {
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strcpy(s->spec, spec);
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s->ops = ops;
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}
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return s;
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}
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static void script_spec__delete(struct script_spec *s)
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{
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free(s->spec);
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free(s);
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}
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static void script_spec__add(struct script_spec *s)
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{
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list_add_tail(&s->node, &script_specs);
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}
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static struct script_spec *script_spec__find(const char *spec)
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{
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struct script_spec *s;
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list_for_each_entry(s, &script_specs, node)
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if (strcasecmp(s->spec, spec) == 0)
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return s;
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return NULL;
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}
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static struct script_spec *script_spec__findnew(const char *spec,
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struct scripting_ops *ops)
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{
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struct script_spec *s = script_spec__find(spec);
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if (s)
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return s;
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s = script_spec__new(spec, ops);
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if (!s)
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goto out_delete_spec;
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script_spec__add(s);
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return s;
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out_delete_spec:
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script_spec__delete(s);
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return NULL;
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}
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int script_spec_register(const char *spec, struct scripting_ops *ops)
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{
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struct script_spec *s;
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s = script_spec__find(spec);
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if (s)
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return -1;
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s = script_spec__findnew(spec, ops);
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if (!s)
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return -1;
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return 0;
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}
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static struct scripting_ops *script_spec__lookup(const char *spec)
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{
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struct script_spec *s = script_spec__find(spec);
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if (!s)
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return NULL;
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return s->ops;
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}
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static void list_available_languages(void)
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{
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struct script_spec *s;
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fprintf(stderr, "\n");
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fprintf(stderr, "Scripting language extensions (used in "
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"perf script -s [spec:]script.[spec]):\n\n");
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list_for_each_entry(s, &script_specs, node)
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fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
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fprintf(stderr, "\n");
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}
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static int parse_scriptname(const struct option *opt __used,
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const char *str, int unset __used)
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{
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char spec[PATH_MAX];
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const char *script, *ext;
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int len;
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if (strcmp(str, "lang") == 0) {
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list_available_languages();
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exit(0);
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}
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script = strchr(str, ':');
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if (script) {
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len = script - str;
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if (len >= PATH_MAX) {
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fprintf(stderr, "invalid language specifier");
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return -1;
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}
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strncpy(spec, str, len);
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spec[len] = '\0';
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scripting_ops = script_spec__lookup(spec);
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if (!scripting_ops) {
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fprintf(stderr, "invalid language specifier");
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return -1;
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}
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script++;
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} else {
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script = str;
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ext = strrchr(script, '.');
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if (!ext) {
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fprintf(stderr, "invalid script extension");
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return -1;
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}
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scripting_ops = script_spec__lookup(++ext);
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if (!scripting_ops) {
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fprintf(stderr, "invalid script extension");
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return -1;
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}
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}
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script_name = strdup(script);
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return 0;
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}
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#define for_each_lang(scripts_dir, lang_dirent, lang_next) \
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while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
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lang_next) \
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if (lang_dirent.d_type == DT_DIR && \
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(strcmp(lang_dirent.d_name, ".")) && \
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(strcmp(lang_dirent.d_name, "..")))
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#define for_each_script(lang_dir, script_dirent, script_next) \
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while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
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script_next) \
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if (script_dirent.d_type != DT_DIR)
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#define RECORD_SUFFIX "-record"
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#define REPORT_SUFFIX "-report"
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struct script_desc {
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struct list_head node;
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char *name;
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char *half_liner;
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char *args;
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};
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LIST_HEAD(script_descs);
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static struct script_desc *script_desc__new(const char *name)
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{
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struct script_desc *s = zalloc(sizeof(*s));
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if (s != NULL && name)
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s->name = strdup(name);
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return s;
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}
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static void script_desc__delete(struct script_desc *s)
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{
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free(s->name);
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free(s->half_liner);
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free(s->args);
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free(s);
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}
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static void script_desc__add(struct script_desc *s)
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{
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list_add_tail(&s->node, &script_descs);
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}
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static struct script_desc *script_desc__find(const char *name)
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{
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struct script_desc *s;
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list_for_each_entry(s, &script_descs, node)
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if (strcasecmp(s->name, name) == 0)
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return s;
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return NULL;
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}
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static struct script_desc *script_desc__findnew(const char *name)
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{
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struct script_desc *s = script_desc__find(name);
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if (s)
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return s;
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s = script_desc__new(name);
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if (!s)
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goto out_delete_desc;
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script_desc__add(s);
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return s;
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out_delete_desc:
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script_desc__delete(s);
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return NULL;
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}
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static char *ends_with(char *str, const char *suffix)
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{
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size_t suffix_len = strlen(suffix);
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char *p = str;
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if (strlen(str) > suffix_len) {
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p = str + strlen(str) - suffix_len;
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if (!strncmp(p, suffix, suffix_len))
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return p;
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}
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return NULL;
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}
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static char *ltrim(char *str)
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{
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int len = strlen(str);
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while (len && isspace(*str)) {
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len--;
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str++;
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}
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return str;
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}
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static int read_script_info(struct script_desc *desc, const char *filename)
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{
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char line[BUFSIZ], *p;
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FILE *fp;
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fp = fopen(filename, "r");
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if (!fp)
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return -1;
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while (fgets(line, sizeof(line), fp)) {
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p = ltrim(line);
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if (strlen(p) == 0)
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continue;
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if (*p != '#')
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continue;
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p++;
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if (strlen(p) && *p == '!')
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continue;
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p = ltrim(p);
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if (strlen(p) && p[strlen(p) - 1] == '\n')
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p[strlen(p) - 1] = '\0';
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if (!strncmp(p, "description:", strlen("description:"))) {
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p += strlen("description:");
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desc->half_liner = strdup(ltrim(p));
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continue;
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}
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if (!strncmp(p, "args:", strlen("args:"))) {
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p += strlen("args:");
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desc->args = strdup(ltrim(p));
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continue;
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}
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}
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fclose(fp);
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return 0;
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}
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static int list_available_scripts(const struct option *opt __used,
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const char *s __used, int unset __used)
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{
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struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
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char scripts_path[MAXPATHLEN];
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DIR *scripts_dir, *lang_dir;
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char script_path[MAXPATHLEN];
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char lang_path[MAXPATHLEN];
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struct script_desc *desc;
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char first_half[BUFSIZ];
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char *script_root;
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char *str;
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snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
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scripts_dir = opendir(scripts_path);
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if (!scripts_dir)
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return -1;
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for_each_lang(scripts_dir, lang_dirent, lang_next) {
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snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
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lang_dirent.d_name);
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lang_dir = opendir(lang_path);
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if (!lang_dir)
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continue;
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for_each_script(lang_dir, script_dirent, script_next) {
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script_root = strdup(script_dirent.d_name);
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str = ends_with(script_root, REPORT_SUFFIX);
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if (str) {
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*str = '\0';
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desc = script_desc__findnew(script_root);
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snprintf(script_path, MAXPATHLEN, "%s/%s",
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lang_path, script_dirent.d_name);
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read_script_info(desc, script_path);
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}
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free(script_root);
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}
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}
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fprintf(stdout, "List of available trace scripts:\n");
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list_for_each_entry(desc, &script_descs, node) {
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sprintf(first_half, "%s %s", desc->name,
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desc->args ? desc->args : "");
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fprintf(stdout, " %-36s %s\n", first_half,
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desc->half_liner ? desc->half_liner : "");
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}
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exit(0);
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}
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static char *get_script_path(const char *script_root, const char *suffix)
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{
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struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
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char scripts_path[MAXPATHLEN];
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char script_path[MAXPATHLEN];
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DIR *scripts_dir, *lang_dir;
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char lang_path[MAXPATHLEN];
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char *str, *__script_root;
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char *path = NULL;
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snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
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scripts_dir = opendir(scripts_path);
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if (!scripts_dir)
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return NULL;
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for_each_lang(scripts_dir, lang_dirent, lang_next) {
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snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
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lang_dirent.d_name);
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lang_dir = opendir(lang_path);
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if (!lang_dir)
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continue;
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for_each_script(lang_dir, script_dirent, script_next) {
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__script_root = strdup(script_dirent.d_name);
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str = ends_with(__script_root, suffix);
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if (str) {
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*str = '\0';
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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;
|
||||
}
|
||||
Reference in New Issue
Block a user