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Diffstat (limited to 'tools/perf/builtin-trace.c')
-rw-r--r--tools/perf/builtin-trace.c403
1 files changed, 370 insertions, 33 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 7aaee39f6774..7932ffa29889 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1,5 +1,8 @@
#include "builtin.h"
+#include "util/color.h"
#include "util/evlist.h"
+#include "util/machine.h"
+#include "util/thread.h"
#include "util/parse-options.h"
#include "util/thread_map.h"
#include "event-parse.h"
@@ -13,15 +16,18 @@ static struct syscall_fmt {
bool errmsg;
bool timeout;
} syscall_fmts[] = {
+ { .name = "access", .errmsg = true, },
{ .name = "arch_prctl", .errmsg = true, .alias = "prctl", },
{ .name = "fstat", .errmsg = true, .alias = "newfstat", },
{ .name = "fstatat", .errmsg = true, .alias = "newfstatat", },
{ .name = "futex", .errmsg = true, },
+ { .name = "open", .errmsg = true, },
{ .name = "poll", .errmsg = true, .timeout = true, },
{ .name = "ppoll", .errmsg = true, .timeout = true, },
{ .name = "read", .errmsg = true, },
{ .name = "recvfrom", .errmsg = true, },
{ .name = "select", .errmsg = true, .timeout = true, },
+ { .name = "socket", .errmsg = true, },
{ .name = "stat", .errmsg = true, .alias = "newstat", },
};
@@ -43,6 +49,57 @@ struct syscall {
struct syscall_fmt *fmt;
};
+static size_t fprintf_duration(unsigned long t, FILE *fp)
+{
+ double duration = (double)t / NSEC_PER_MSEC;
+ size_t printed = fprintf(fp, "(");
+
+ if (duration >= 1.0)
+ printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration);
+ else if (duration >= 0.01)
+ printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration);
+ else
+ printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration);
+ return printed + fprintf(stdout, "): ");
+}
+
+struct thread_trace {
+ u64 entry_time;
+ u64 exit_time;
+ bool entry_pending;
+ unsigned long nr_events;
+ char *entry_str;
+ double runtime_ms;
+};
+
+static struct thread_trace *thread_trace__new(void)
+{
+ return zalloc(sizeof(struct thread_trace));
+}
+
+static struct thread_trace *thread__trace(struct thread *thread)
+{
+ struct thread_trace *ttrace;
+
+ if (thread == NULL)
+ goto fail;
+
+ if (thread->priv == NULL)
+ thread->priv = thread_trace__new();
+
+ if (thread->priv == NULL)
+ goto fail;
+
+ ttrace = thread->priv;
+ ++ttrace->nr_events;
+
+ return ttrace;
+fail:
+ color_fprintf(stdout, PERF_COLOR_RED,
+ "WARNING: not enough memory, dropping samples!\n");
+ return NULL;
+}
+
struct trace {
int audit_machine;
struct {
@@ -50,8 +107,96 @@ struct trace {
struct syscall *table;
} syscalls;
struct perf_record_opts opts;
+ struct machine host;
+ u64 base_time;
+ unsigned long nr_events;
+ bool sched;
+ bool multiple_threads;
+ double duration_filter;
+ double runtime_ms;
};
+static bool trace__filter_duration(struct trace *trace, double t)
+{
+ return t < (trace->duration_filter * NSEC_PER_MSEC);
+}
+
+static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
+{
+ double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC;
+
+ return fprintf(fp, "%10.3f ", ts);
+}
+
+static bool done = false;
+
+static void sig_handler(int sig __maybe_unused)
+{
+ done = true;
+}
+
+static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread,
+ u64 duration, u64 tstamp, FILE *fp)
+{
+ size_t printed = trace__fprintf_tstamp(trace, tstamp, fp);
+ printed += fprintf_duration(duration, fp);
+
+ if (trace->multiple_threads)
+ printed += fprintf(fp, "%d ", thread->pid);
+
+ return printed;
+}
+
+static int trace__process_event(struct machine *machine, union perf_event *event)
+{
+ int ret = 0;
+
+ switch (event->header.type) {
+ case PERF_RECORD_LOST:
+ color_fprintf(stdout, PERF_COLOR_RED,
+ "LOST %" PRIu64 " events!\n", event->lost.lost);
+ ret = machine__process_lost_event(machine, event);
+ default:
+ ret = machine__process_event(machine, event);
+ break;
+ }
+
+ return ret;
+}
+
+static int trace__tool_process(struct perf_tool *tool __maybe_unused,
+ union perf_event *event,
+ struct perf_sample *sample __maybe_unused,
+ struct machine *machine)
+{
+ return trace__process_event(machine, event);
+}
+
+static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
+{
+ int err = symbol__init();
+
+ if (err)
+ return err;
+
+ machine__init(&trace->host, "", HOST_KERNEL_ID);
+ machine__create_kernel_maps(&trace->host);
+
+ if (perf_target__has_task(&trace->opts.target)) {
+ err = perf_event__synthesize_thread_map(NULL, evlist->threads,
+ trace__tool_process,
+ &trace->host);
+ } else {
+ err = perf_event__synthesize_threads(NULL, trace__tool_process,
+ &trace->host);
+ }
+
+ if (err)
+ symbol__exit();
+
+ return err;
+}
+
static int trace__read_syscall_info(struct trace *trace, int id)
{
char tp_name[128];
@@ -93,7 +238,8 @@ static int trace__read_syscall_info(struct trace *trace, int id)
return sc->tp_format != NULL ? 0 : -1;
}
-static size_t syscall__fprintf_args(struct syscall *sc, unsigned long *args, FILE *fp)
+static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
+ unsigned long *args)
{
int i = 0;
size_t printed = 0;
@@ -102,12 +248,15 @@ static size_t syscall__fprintf_args(struct syscall *sc, unsigned long *args, FIL
struct format_field *field;
for (field = sc->tp_format->format.fields->next; field; field = field->next) {
- printed += fprintf(fp, "%s%s: %ld", printed ? ", " : "",
- field->name, args[i++]);
+ printed += scnprintf(bf + printed, size - printed,
+ "%s%s: %ld", printed ? ", " : "",
+ field->name, args[i++]);
}
} else {
while (i < 6) {
- printed += fprintf(fp, "%sarg%d: %ld", printed ? ", " : "", i, args[i]);
+ printed += scnprintf(bf + printed, size - printed,
+ "%sarg%d: %ld",
+ printed ? ", " : "", i, args[i]);
++i;
}
}
@@ -139,17 +288,24 @@ static struct syscall *trace__syscall_info(struct trace *trace,
return &trace->syscalls.table[id];
out_cant_read:
- printf("Problems reading syscall %d information\n", id);
+ printf("Problems reading syscall %d", id);
+ if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
+ printf("(%s)", trace->syscalls.table[id].name);
+ puts(" information");
return NULL;
}
static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
struct perf_sample *sample)
{
+ char *msg;
void *args;
+ size_t printed = 0;
+ struct thread *thread = machine__findnew_thread(&trace->host, sample->tid);
struct syscall *sc = trace__syscall_info(trace, evsel, sample);
+ struct thread_trace *ttrace = thread__trace(thread);
- if (sc == NULL)
+ if (ttrace == NULL || sc == NULL)
return -1;
args = perf_evsel__rawptr(evsel, sample, "args");
@@ -158,8 +314,27 @@ static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
return -1;
}
- printf("%s(", sc->name);
- syscall__fprintf_args(sc, args, stdout);
+ ttrace = thread->priv;
+
+ if (ttrace->entry_str == NULL) {
+ ttrace->entry_str = malloc(1024);
+ if (!ttrace->entry_str)
+ return -1;
+ }
+
+ ttrace->entry_time = sample->time;
+ msg = ttrace->entry_str;
+ printed += scnprintf(msg + printed, 1024 - printed, "%s(", sc->name);
+
+ printed += syscall__scnprintf_args(sc, msg + printed, 1024 - printed, args);
+
+ if (!strcmp(sc->name, "exit_group") || !strcmp(sc->name, "exit")) {
+ if (!trace->duration_filter) {
+ trace__fprintf_entry_head(trace, thread, 1, sample->time, stdout);
+ printf("%-70s\n", ttrace->entry_str);
+ }
+ } else
+ ttrace->entry_pending = true;
return 0;
}
@@ -168,13 +343,37 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
struct perf_sample *sample)
{
int ret;
+ u64 duration = 0;
+ struct thread *thread = machine__findnew_thread(&trace->host, sample->tid);
+ struct thread_trace *ttrace = thread__trace(thread);
struct syscall *sc = trace__syscall_info(trace, evsel, sample);
- if (sc == NULL)
+ if (ttrace == NULL || sc == NULL)
return -1;
ret = perf_evsel__intval(evsel, sample, "ret");
+ ttrace = thread->priv;
+
+ ttrace->exit_time = sample->time;
+
+ if (ttrace->entry_time) {
+ duration = sample->time - ttrace->entry_time;
+ if (trace__filter_duration(trace, duration))
+ goto out;
+ } else if (trace->duration_filter)
+ goto out;
+
+ trace__fprintf_entry_head(trace, thread, duration, sample->time, stdout);
+
+ if (ttrace->entry_pending) {
+ printf("%-70s", ttrace->entry_str);
+ } else {
+ printf(" ... [");
+ color_fprintf(stdout, PERF_COLOR_YELLOW, "continued");
+ printf("]: %s()", sc->name);
+ }
+
if (ret < 0 && sc->fmt && sc->fmt->errmsg) {
char bf[256];
const char *emsg = strerror_r(-ret, bf, sizeof(bf)),
@@ -187,14 +386,44 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
printf(") = %d", ret);
putchar('\n');
+out:
+ ttrace->entry_pending = false;
+
+ return 0;
+}
+
+static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel,
+ struct perf_sample *sample)
+{
+ u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
+ double runtime_ms = (double)runtime / NSEC_PER_MSEC;
+ struct thread *thread = machine__findnew_thread(&trace->host, sample->tid);
+ struct thread_trace *ttrace = thread__trace(thread);
+
+ if (ttrace == NULL)
+ goto out_dump;
+
+ ttrace->runtime_ms += runtime_ms;
+ trace->runtime_ms += runtime_ms;
+ return 0;
+
+out_dump:
+ printf("%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
+ evsel->name,
+ perf_evsel__strval(evsel, sample, "comm"),
+ (pid_t)perf_evsel__intval(evsel, sample, "pid"),
+ runtime,
+ perf_evsel__intval(evsel, sample, "vruntime"));
return 0;
}
-static int trace__run(struct trace *trace)
+static int trace__run(struct trace *trace, int argc, const char **argv)
{
struct perf_evlist *evlist = perf_evlist__new(NULL, NULL);
struct perf_evsel *evsel;
- int err = -1, i, nr_events = 0, before;
+ int err = -1, i;
+ unsigned long before;
+ const bool forks = argc > 0;
if (evlist == NULL) {
printf("Not enough memory to run!\n");
@@ -207,14 +436,38 @@ static int trace__run(struct trace *trace)
goto out_delete_evlist;
}
+ if (trace->sched &&
+ perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
+ trace__sched_stat_runtime)) {
+ printf("Couldn't read the sched_stat_runtime tracepoint information!\n");
+ goto out_delete_evlist;
+ }
+
err = perf_evlist__create_maps(evlist, &trace->opts.target);
if (err < 0) {
printf("Problems parsing the target to trace, check your options!\n");
goto out_delete_evlist;
}
+ err = trace__symbols_init(trace, evlist);
+ if (err < 0) {
+ printf("Problems initializing symbol libraries!\n");
+ goto out_delete_evlist;
+ }
+
perf_evlist__config_attrs(evlist, &trace->opts);
+ signal(SIGCHLD, sig_handler);
+ signal(SIGINT, sig_handler);
+
+ if (forks) {
+ err = perf_evlist__prepare_workload(evlist, &trace->opts, argv);
+ if (err < 0) {
+ printf("Couldn't run the workload!\n");
+ goto out_delete_evlist;
+ }
+ }
+
err = perf_evlist__open(evlist);
if (err < 0) {
printf("Couldn't create the events: %s\n", strerror(errno));
@@ -228,8 +481,13 @@ static int trace__run(struct trace *trace)
}
perf_evlist__enable(evlist);
+
+ if (forks)
+ perf_evlist__start_workload(evlist);
+
+ trace->multiple_threads = evlist->threads->map[0] == -1 || evlist->threads->nr > 1;
again:
- before = nr_events;
+ before = trace->nr_events;
for (i = 0; i < evlist->nr_mmaps; i++) {
union perf_event *event;
@@ -239,19 +497,7 @@ again:
tracepoint_handler handler;
struct perf_sample sample;
- ++nr_events;
-
- switch (type) {
- case PERF_RECORD_SAMPLE:
- break;
- case PERF_RECORD_LOST:
- printf("LOST %" PRIu64 " events!\n", event->lost.lost);
- continue;
- default:
- printf("Unexpected %s event, skipping...\n",
- perf_event__name(type));
- continue;
- }
+ ++trace->nr_events;
err = perf_evlist__parse_sample(evlist, event, &sample);
if (err) {
@@ -259,14 +505,26 @@ again:
continue;
}
+ if (trace->base_time == 0)
+ trace->base_time = sample.time;
+
+ if (type != PERF_RECORD_SAMPLE) {
+ trace__process_event(&trace->host, event);
+ continue;
+ }
+
evsel = perf_evlist__id2evsel(evlist, sample.id);
if (evsel == NULL) {
printf("Unknown tp ID %" PRIu64 ", skipping...\n", sample.id);
continue;
}
- if (evlist->threads->map[0] == -1 || evlist->threads->nr > 1)
- printf("%d ", sample.tid);
+ if (sample.raw_data == NULL) {
+ printf("%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
+ perf_evsel__name(evsel), sample.tid,
+ sample.cpu, sample.raw_size);
+ continue;
+ }
if (sample.raw_data == NULL) {
printf("%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
@@ -280,8 +538,15 @@ again:
}
}
- if (nr_events == before)
+ if (trace->nr_events == before) {
+ if (done)
+ goto out_delete_evlist;
+
poll(evlist->pollfd, evlist->nr_fds, -1);
+ }
+
+ if (done)
+ perf_evlist__disable(evlist);
goto again;
@@ -291,10 +556,65 @@ out:
return err;
}
+static size_t trace__fprintf_threads_header(FILE *fp)
+{
+ size_t printed;
+
+ printed = fprintf(fp, "\n _____________________________________________________________________\n");
+ printed += fprintf(fp," __) Summary of events (__\n\n");
+ printed += fprintf(fp," [ task - pid ] [ events ] [ ratio ] [ runtime ]\n");
+ printed += fprintf(fp," _____________________________________________________________________\n\n");
+
+ return printed;
+}
+
+static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp)
+{
+ size_t printed = trace__fprintf_threads_header(fp);
+ struct rb_node *nd;
+
+ for (nd = rb_first(&trace->host.threads); nd; nd = rb_next(nd)) {
+ struct thread *thread = rb_entry(nd, struct thread, rb_node);
+ struct thread_trace *ttrace = thread->priv;
+ const char *color;
+ double ratio;
+
+ if (ttrace == NULL)
+ continue;
+
+ ratio = (double)ttrace->nr_events / trace->nr_events * 100.0;
+
+ color = PERF_COLOR_NORMAL;
+ if (ratio > 50.0)
+ color = PERF_COLOR_RED;
+ else if (ratio > 25.0)
+ color = PERF_COLOR_GREEN;
+ else if (ratio > 5.0)
+ color = PERF_COLOR_YELLOW;
+
+ printed += color_fprintf(fp, color, "%20s", thread->comm);
+ printed += fprintf(fp, " - %-5d :%11lu [", thread->pid, ttrace->nr_events);
+ printed += color_fprintf(fp, color, "%5.1f%%", ratio);
+ printed += fprintf(fp, " ] %10.3f ms\n", ttrace->runtime_ms);
+ }
+
+ return printed;
+}
+
+static int trace__set_duration(const struct option *opt, const char *str,
+ int unset __maybe_unused)
+{
+ struct trace *trace = opt->value;
+
+ trace->duration_filter = atof(str);
+ return 0;
+}
+
int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
{
const char * const trace_usage[] = {
- "perf trace [<options>]",
+ "perf trace [<options>] [<command>]",
+ "perf trace [<options>] -- <command> [<options>]",
NULL
};
struct trace trace = {
@@ -328,21 +648,38 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
"number of mmap data pages"),
OPT_STRING(0, "uid", &trace.opts.target.uid_str, "user",
"user to profile"),
+ OPT_CALLBACK(0, "duration", &trace, "float",
+ "show only events with duration > N.M ms",
+ trace__set_duration),
+ OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
OPT_END()
};
int err;
+ char bf[BUFSIZ];
argc = parse_options(argc, argv, trace_options, trace_usage, 0);
- if (argc)
- usage_with_options(trace_usage, trace_options);
+
+ err = perf_target__validate(&trace.opts.target);
+ if (err) {
+ perf_target__strerror(&trace.opts.target, err, bf, sizeof(bf));
+ printf("%s", bf);
+ return err;
+ }
err = perf_target__parse_uid(&trace.opts.target);
if (err) {
- char bf[BUFSIZ];
perf_target__strerror(&trace.opts.target, err, bf, sizeof(bf));
printf("%s", bf);
return err;
}
- return trace__run(&trace);
+ if (!argc && perf_target__none(&trace.opts.target))
+ trace.opts.target.system_wide = true;
+
+ err = trace__run(&trace, argc, argv);
+
+ if (trace.sched && !err)
+ trace__fprintf_thread_summary(&trace, stdout);
+
+ return err;
}