mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-27 04:20:51 +07:00
perf trace: Implement -o/--output filename
To output all 'trace' output to a filename, just like 'strace -ofile' Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-6q1homkwoayhmoq64y5vhel6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
parent
e3e1a54fce
commit
c24ff998fc
@ -30,6 +30,10 @@ OPTIONS
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--expr::
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List of events to show, currently only syscall names.
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-o::
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--output=::
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Output file name.
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-p::
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--pid=::
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Record events on existing process ID (comma separated list).
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@ -63,7 +63,7 @@ static size_t fprintf_duration(unsigned long t, FILE *fp)
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printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration);
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else
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printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration);
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return printed + fprintf(stdout, "): ");
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return printed + fprintf(fp, "): ");
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}
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struct thread_trace {
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@ -80,7 +80,7 @@ static struct thread_trace *thread_trace__new(void)
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return zalloc(sizeof(struct thread_trace));
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}
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static struct thread_trace *thread__trace(struct thread *thread)
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static struct thread_trace *thread__trace(struct thread *thread, FILE *fp)
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{
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struct thread_trace *ttrace;
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@ -98,12 +98,13 @@ static struct thread_trace *thread__trace(struct thread *thread)
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return ttrace;
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fail:
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color_fprintf(stdout, PERF_COLOR_RED,
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color_fprintf(fp, PERF_COLOR_RED,
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"WARNING: not enough memory, dropping samples!\n");
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return NULL;
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}
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struct trace {
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struct perf_tool tool;
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int audit_machine;
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struct {
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int max;
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@ -112,6 +113,7 @@ struct trace {
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struct perf_record_opts opts;
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struct machine host;
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u64 base_time;
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FILE *output;
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struct strlist *ev_qualifier;
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unsigned long nr_events;
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bool sched;
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@ -151,13 +153,14 @@ static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thre
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return printed;
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}
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static int trace__process_event(struct machine *machine, union perf_event *event)
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static int trace__process_event(struct trace *trace, struct machine *machine,
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union perf_event *event)
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{
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int ret = 0;
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switch (event->header.type) {
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case PERF_RECORD_LOST:
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color_fprintf(stdout, PERF_COLOR_RED,
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color_fprintf(trace->output, PERF_COLOR_RED,
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"LOST %" PRIu64 " events!\n", event->lost.lost);
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ret = machine__process_lost_event(machine, event);
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default:
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@ -168,12 +171,13 @@ static int trace__process_event(struct machine *machine, union perf_event *event
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return ret;
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}
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static int trace__tool_process(struct perf_tool *tool __maybe_unused,
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static int trace__tool_process(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine)
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{
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return trace__process_event(machine, event);
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struct trace *trace = container_of(tool, struct trace, tool);
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return trace__process_event(trace, machine, event);
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}
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static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
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@ -187,11 +191,11 @@ static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
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machine__create_kernel_maps(&trace->host);
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if (perf_target__has_task(&trace->opts.target)) {
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err = perf_event__synthesize_thread_map(NULL, evlist->threads,
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err = perf_event__synthesize_thread_map(&trace->tool, evlist->threads,
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trace__tool_process,
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&trace->host);
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} else {
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err = perf_event__synthesize_threads(NULL, trace__tool_process,
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err = perf_event__synthesize_threads(&trace->tool, trace__tool_process,
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&trace->host);
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}
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@ -288,7 +292,7 @@ static struct syscall *trace__syscall_info(struct trace *trace,
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int id = perf_evsel__intval(evsel, sample, "id");
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if (id < 0) {
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printf("Invalid syscall %d id, skipping...\n", id);
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fprintf(trace->output, "Invalid syscall %d id, skipping...\n", id);
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return NULL;
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}
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@ -302,10 +306,10 @@ static struct syscall *trace__syscall_info(struct trace *trace,
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return &trace->syscalls.table[id];
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out_cant_read:
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printf("Problems reading syscall %d", id);
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fprintf(trace->output, "Problems reading syscall %d", id);
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if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
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printf("(%s)", trace->syscalls.table[id].name);
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puts(" information");
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fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
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fputs(" information", trace->output);
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return NULL;
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}
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@ -326,13 +330,13 @@ static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
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return 0;
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thread = machine__findnew_thread(&trace->host, sample->tid);
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ttrace = thread__trace(thread);
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ttrace = thread__trace(thread, trace->output);
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if (ttrace == NULL)
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return -1;
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args = perf_evsel__rawptr(evsel, sample, "args");
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if (args == NULL) {
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printf("Problems reading syscall arguments\n");
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fprintf(trace->output, "Problems reading syscall arguments\n");
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return -1;
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}
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@ -352,8 +356,8 @@ static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
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if (!strcmp(sc->name, "exit_group") || !strcmp(sc->name, "exit")) {
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if (!trace->duration_filter) {
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trace__fprintf_entry_head(trace, thread, 1, sample->time, stdout);
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printf("%-70s\n", ttrace->entry_str);
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trace__fprintf_entry_head(trace, thread, 1, sample->time, trace->output);
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fprintf(trace->output, "%-70s\n", ttrace->entry_str);
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}
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} else
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ttrace->entry_pending = true;
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@ -377,7 +381,7 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
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return 0;
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thread = machine__findnew_thread(&trace->host, sample->tid);
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ttrace = thread__trace(thread);
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ttrace = thread__trace(thread, trace->output);
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if (ttrace == NULL)
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return -1;
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@ -394,14 +398,14 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
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} else if (trace->duration_filter)
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goto out;
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trace__fprintf_entry_head(trace, thread, duration, sample->time, stdout);
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trace__fprintf_entry_head(trace, thread, duration, sample->time, trace->output);
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if (ttrace->entry_pending) {
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printf("%-70s", ttrace->entry_str);
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fprintf(trace->output, "%-70s", ttrace->entry_str);
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} else {
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printf(" ... [");
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color_fprintf(stdout, PERF_COLOR_YELLOW, "continued");
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printf("]: %s()", sc->name);
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fprintf(trace->output, " ... [");
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color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued");
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fprintf(trace->output, "]: %s()", sc->name);
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}
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if (ret < 0 && sc->fmt && sc->fmt->errmsg) {
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@ -409,13 +413,13 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
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const char *emsg = strerror_r(-ret, bf, sizeof(bf)),
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*e = audit_errno_to_name(-ret);
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printf(") = -1 %s %s", e, emsg);
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fprintf(trace->output, ") = -1 %s %s", e, emsg);
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} else if (ret == 0 && sc->fmt && sc->fmt->timeout)
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printf(") = 0 Timeout");
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fprintf(trace->output, ") = 0 Timeout");
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else
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printf(") = %d", ret);
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fprintf(trace->output, ") = %d", ret);
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putchar('\n');
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fputc('\n', trace->output);
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out:
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ttrace->entry_pending = false;
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@ -428,7 +432,7 @@ static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evs
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u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
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double runtime_ms = (double)runtime / NSEC_PER_MSEC;
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struct thread *thread = machine__findnew_thread(&trace->host, sample->tid);
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struct thread_trace *ttrace = thread__trace(thread);
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struct thread_trace *ttrace = thread__trace(thread, trace->output);
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if (ttrace == NULL)
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goto out_dump;
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@ -438,7 +442,7 @@ static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evs
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return 0;
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out_dump:
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printf("%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
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fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
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evsel->name,
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perf_evsel__strval(evsel, sample, "comm"),
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(pid_t)perf_evsel__intval(evsel, sample, "pid"),
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@ -456,32 +460,32 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
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const bool forks = argc > 0;
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if (evlist == NULL) {
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printf("Not enough memory to run!\n");
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fprintf(trace->output, "Not enough memory to run!\n");
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goto out;
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}
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if (perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_enter", trace__sys_enter) ||
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perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_exit", trace__sys_exit)) {
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printf("Couldn't read the raw_syscalls tracepoints information!\n");
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fprintf(trace->output, "Couldn't read the raw_syscalls tracepoints information!\n");
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goto out_delete_evlist;
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}
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if (trace->sched &&
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perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
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trace__sched_stat_runtime)) {
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printf("Couldn't read the sched_stat_runtime tracepoint information!\n");
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fprintf(trace->output, "Couldn't read the sched_stat_runtime tracepoint information!\n");
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goto out_delete_evlist;
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}
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err = perf_evlist__create_maps(evlist, &trace->opts.target);
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if (err < 0) {
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printf("Problems parsing the target to trace, check your options!\n");
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fprintf(trace->output, "Problems parsing the target to trace, check your options!\n");
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goto out_delete_evlist;
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}
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err = trace__symbols_init(trace, evlist);
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if (err < 0) {
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printf("Problems initializing symbol libraries!\n");
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fprintf(trace->output, "Problems initializing symbol libraries!\n");
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goto out_delete_maps;
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}
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@ -494,20 +498,20 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
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err = perf_evlist__prepare_workload(evlist, &trace->opts.target,
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argv, false, false);
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if (err < 0) {
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printf("Couldn't run the workload!\n");
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fprintf(trace->output, "Couldn't run the workload!\n");
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goto out_delete_maps;
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}
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}
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err = perf_evlist__open(evlist);
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if (err < 0) {
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printf("Couldn't create the events: %s\n", strerror(errno));
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fprintf(trace->output, "Couldn't create the events: %s\n", strerror(errno));
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goto out_delete_maps;
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}
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err = perf_evlist__mmap(evlist, UINT_MAX, false);
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if (err < 0) {
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printf("Couldn't mmap the events: %s\n", strerror(errno));
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fprintf(trace->output, "Couldn't mmap the events: %s\n", strerror(errno));
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goto out_close_evlist;
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}
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@ -532,7 +536,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
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err = perf_evlist__parse_sample(evlist, event, &sample);
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if (err) {
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printf("Can't parse sample, err = %d, skipping...\n", err);
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fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err);
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continue;
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}
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@ -540,18 +544,18 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
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trace->base_time = sample.time;
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if (type != PERF_RECORD_SAMPLE) {
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trace__process_event(&trace->host, event);
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trace__process_event(trace, &trace->host, event);
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continue;
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}
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evsel = perf_evlist__id2evsel(evlist, sample.id);
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if (evsel == NULL) {
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printf("Unknown tp ID %" PRIu64 ", skipping...\n", sample.id);
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fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample.id);
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continue;
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}
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if (sample.raw_data == NULL) {
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printf("%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
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fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
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perf_evsel__name(evsel), sample.tid,
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sample.cpu, sample.raw_size);
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continue;
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@ -640,6 +644,23 @@ static int trace__set_duration(const struct option *opt, const char *str,
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return 0;
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}
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static int trace__open_output(struct trace *trace, const char *filename)
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{
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struct stat st;
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if (!stat(filename, &st) && st.st_size) {
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char oldname[PATH_MAX];
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scnprintf(oldname, sizeof(oldname), "%s.old", filename);
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unlink(oldname);
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rename(filename, oldname);
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}
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trace->output = fopen(filename, "w");
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return trace->output == NULL ? -errno : 0;
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}
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int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
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{
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const char * const trace_usage[] = {
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@ -662,11 +683,14 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
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.no_delay = true,
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.mmap_pages = 1024,
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},
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.output = stdout,
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};
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const char *output_name = NULL;
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const char *ev_qualifier_str = NULL;
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const struct option trace_options[] = {
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OPT_STRING('e', "expr", &ev_qualifier_str, "expr",
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"list of events to trace"),
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OPT_STRING('o', "output", &output_name, "file", "output file name"),
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OPT_STRING('p', "pid", &trace.opts.target.pid, "pid",
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"trace events on existing process id"),
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OPT_STRING(0, "tid", &trace.opts.target.tid, "tid",
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@ -692,26 +716,36 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
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argc = parse_options(argc, argv, trace_options, trace_usage, 0);
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if (output_name != NULL) {
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err = trace__open_output(&trace, output_name);
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if (err < 0) {
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perror("failed to create output file");
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goto out;
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}
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}
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if (ev_qualifier_str != NULL) {
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trace.ev_qualifier = strlist__new(true, ev_qualifier_str);
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if (trace.ev_qualifier == NULL) {
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puts("Not enough memory to parse event qualifier");
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return -ENOMEM;
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fputs("Not enough memory to parse event qualifier",
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trace.output);
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err = -ENOMEM;
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goto out_close;
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}
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}
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err = perf_target__validate(&trace.opts.target);
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if (err) {
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perf_target__strerror(&trace.opts.target, err, bf, sizeof(bf));
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printf("%s", bf);
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return err;
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fprintf(trace.output, "%s", bf);
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goto out_close;
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}
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err = perf_target__parse_uid(&trace.opts.target);
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if (err) {
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perf_target__strerror(&trace.opts.target, err, bf, sizeof(bf));
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printf("%s", bf);
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return err;
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fprintf(trace.output, "%s", bf);
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goto out_close;
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}
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if (!argc && perf_target__none(&trace.opts.target))
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@ -720,7 +754,11 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
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err = trace__run(&trace, argc, argv);
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if (trace.sched && !err)
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trace__fprintf_thread_summary(&trace, stdout);
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trace__fprintf_thread_summary(&trace, trace.output);
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out_close:
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if (output_name != NULL)
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fclose(trace.output);
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out:
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return err;
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}
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