struct event_format *tp_format;
const char *name;
bool filtered;
+ bool is_exit;
struct syscall_fmt *fmt;
size_t (**arg_scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
void **arg_parm;
u64 exit_time;
bool entry_pending;
unsigned long nr_events;
+ unsigned long pfmaj, pfmin;
char *entry_str;
double runtime_ms;
struct {
return NULL;
}
+#define TRACE_PFMAJ (1 << 0)
+#define TRACE_PFMIN (1 << 1)
+
struct trace {
struct perf_tool tool;
struct {
bool summary_only;
bool show_comm;
bool show_tool_stats;
+ bool trace_syscalls;
+ int trace_pgfaults;
};
static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname)
if (fd < 0)
return NULL;
- if ((fd > ttrace->paths.max || ttrace->paths.table[fd] == NULL))
+ if ((fd > ttrace->paths.max || ttrace->paths.table[fd] == NULL)) {
if (!trace->live)
return NULL;
++trace->stats.proc_getname;
- if (thread__read_fd_path(thread, fd)) {
+ if (thread__read_fd_path(thread, fd))
return NULL;
}
if (sc->tp_format == NULL)
return -1;
+ sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit");
+
return syscall__set_arg_fmts(sc);
}
}
typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel,
+ union perf_event *event,
struct perf_sample *sample);
static struct syscall *trace__syscall_info(struct trace *trace,
}
static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
+ union perf_event *event __maybe_unused,
struct perf_sample *sample)
{
char *msg;
return -1;
args = perf_evsel__sc_tp_ptr(evsel, args, sample);
- ttrace = thread->priv;
if (ttrace->entry_str == NULL) {
ttrace->entry_str = malloc(1024);
printed += syscall__scnprintf_args(sc, msg + printed, 1024 - printed,
args, trace, thread);
- if (!strcmp(sc->name, "exit_group") || !strcmp(sc->name, "exit")) {
+ if (sc->is_exit) {
if (!trace->duration_filter && !trace->summary_only) {
trace__fprintf_entry_head(trace, thread, 1, sample->time, trace->output);
fprintf(trace->output, "%-70s\n", ttrace->entry_str);
}
static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
+ union perf_event *event __maybe_unused,
struct perf_sample *sample)
{
int ret;
++trace->stats.vfs_getname;
}
- ttrace = thread->priv;
-
ttrace->exit_time = sample->time;
if (ttrace->entry_time) {
}
static int trace__vfs_getname(struct trace *trace, struct perf_evsel *evsel,
+ union perf_event *event __maybe_unused,
struct perf_sample *sample)
{
trace->last_vfs_getname = perf_evsel__rawptr(evsel, sample, "pathname");
}
static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel,
+ union perf_event *event __maybe_unused,
struct perf_sample *sample)
{
u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
return 0;
}
+static void print_location(FILE *f, struct perf_sample *sample,
+ struct addr_location *al,
+ bool print_dso, bool print_sym)
+{
+
+ if ((verbose || print_dso) && al->map)
+ fprintf(f, "%s@", al->map->dso->long_name);
+
+ if ((verbose || print_sym) && al->sym)
+ fprintf(f, "%s+0x%" PRIx64, al->sym->name,
+ al->addr - al->sym->start);
+ else if (al->map)
+ fprintf(f, "0x%" PRIx64, al->addr);
+ else
+ fprintf(f, "0x%" PRIx64, sample->addr);
+}
+
+static int trace__pgfault(struct trace *trace,
+ struct perf_evsel *evsel,
+ union perf_event *event,
+ struct perf_sample *sample)
+{
+ struct thread *thread;
+ u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ struct addr_location al;
+ char map_type = 'd';
+ struct thread_trace *ttrace;
+
+ thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
+ ttrace = thread__trace(thread, trace->output);
+ if (ttrace == NULL)
+ return -1;
+
+ if (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)
+ ttrace->pfmaj++;
+ else
+ ttrace->pfmin++;
+
+ if (trace->summary_only)
+ return 0;
+
+ thread__find_addr_location(thread, trace->host, cpumode, MAP__FUNCTION,
+ sample->ip, &al);
+
+ trace__fprintf_entry_head(trace, thread, 0, sample->time, trace->output);
+
+ fprintf(trace->output, "%sfault [",
+ evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ?
+ "maj" : "min");
+
+ print_location(trace->output, sample, &al, false, true);
+
+ fprintf(trace->output, "] => ");
+
+ thread__find_addr_location(thread, trace->host, cpumode, MAP__VARIABLE,
+ sample->addr, &al);
+
+ if (!al.map) {
+ thread__find_addr_location(thread, trace->host, cpumode,
+ MAP__FUNCTION, sample->addr, &al);
+
+ if (al.map)
+ map_type = 'x';
+ else
+ map_type = '?';
+ }
+
+ print_location(trace->output, sample, &al, true, false);
+
+ fprintf(trace->output, " (%c%c)\n", map_type, al.level);
+
+ return 0;
+}
+
static bool skip_sample(struct trace *trace, struct perf_sample *sample)
{
if ((trace->pid_list && intlist__find(trace->pid_list, sample->pid)) ||
}
static int trace__process_sample(struct perf_tool *tool,
- union perf_event *event __maybe_unused,
+ union perf_event *event,
struct perf_sample *sample,
struct perf_evsel *evsel,
struct machine *machine __maybe_unused)
if (handler) {
++trace->nr_events;
- handler(trace, evsel, sample);
+ handler(trace, evsel, event, sample);
}
return err;
return 0;
}
-static int trace__record(int argc, const char **argv)
+static int trace__record(struct trace *trace, int argc, const char **argv)
{
unsigned int rec_argc, i, j;
const char **rec_argv;
"-R",
"-m", "1024",
"-c", "1",
- "-e",
};
+ const char * const sc_args[] = { "-e", };
+ unsigned int sc_args_nr = ARRAY_SIZE(sc_args);
+ const char * const majpf_args[] = { "-e", "major-faults" };
+ unsigned int majpf_args_nr = ARRAY_SIZE(majpf_args);
+ const char * const minpf_args[] = { "-e", "minor-faults" };
+ unsigned int minpf_args_nr = ARRAY_SIZE(minpf_args);
+
/* +1 is for the event string below */
- rec_argc = ARRAY_SIZE(record_args) + 1 + argc;
+ rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 1 +
+ majpf_args_nr + minpf_args_nr + argc;
rec_argv = calloc(rec_argc + 1, sizeof(char *));
if (rec_argv == NULL)
return -ENOMEM;
+ j = 0;
for (i = 0; i < ARRAY_SIZE(record_args); i++)
- rec_argv[i] = record_args[i];
-
- /* event string may be different for older kernels - e.g., RHEL6 */
- if (is_valid_tracepoint("raw_syscalls:sys_enter"))
- rec_argv[i] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit";
- else if (is_valid_tracepoint("syscalls:sys_enter"))
- rec_argv[i] = "syscalls:sys_enter,syscalls:sys_exit";
- else {
- pr_err("Neither raw_syscalls nor syscalls events exist.\n");
- return -1;
+ rec_argv[j++] = record_args[i];
+
+ if (trace->trace_syscalls) {
+ for (i = 0; i < sc_args_nr; i++)
+ rec_argv[j++] = sc_args[i];
+
+ /* event string may be different for older kernels - e.g., RHEL6 */
+ if (is_valid_tracepoint("raw_syscalls:sys_enter"))
+ rec_argv[j++] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit";
+ else if (is_valid_tracepoint("syscalls:sys_enter"))
+ rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit";
+ else {
+ pr_err("Neither raw_syscalls nor syscalls events exist.\n");
+ return -1;
+ }
}
- i++;
- for (j = 0; j < (unsigned int)argc; j++, i++)
- rec_argv[i] = argv[j];
+ if (trace->trace_pgfaults & TRACE_PFMAJ)
+ for (i = 0; i < majpf_args_nr; i++)
+ rec_argv[j++] = majpf_args[i];
+
+ if (trace->trace_pgfaults & TRACE_PFMIN)
+ for (i = 0; i < minpf_args_nr; i++)
+ rec_argv[j++] = minpf_args[i];
+
+ for (i = 0; i < (unsigned int)argc; i++)
+ rec_argv[j++] = argv[i];
- return cmd_record(i, rec_argv, NULL);
+ return cmd_record(j, rec_argv, NULL);
}
static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp);
perf_evlist__add(evlist, evsel);
}
+static int perf_evlist__add_pgfault(struct perf_evlist *evlist,
+ u64 config)
+{
+ struct perf_evsel *evsel;
+ struct perf_event_attr attr = {
+ .type = PERF_TYPE_SOFTWARE,
+ .mmap_data = 1,
+ };
+
+ attr.config = config;
+ attr.sample_period = 1;
+
+ event_attr_init(&attr);
+
+ evsel = perf_evsel__new(&attr);
+ if (!evsel)
+ return -ENOMEM;
+
+ evsel->handler = trace__pgfault;
+ perf_evlist__add(evlist, evsel);
+
+ return 0;
+}
+
static int trace__run(struct trace *trace, int argc, const char **argv)
{
struct perf_evlist *evlist = perf_evlist__new();
goto out;
}
- if (perf_evlist__add_syscall_newtp(evlist, trace__sys_enter, trace__sys_exit))
+ if (trace->trace_syscalls &&
+ perf_evlist__add_syscall_newtp(evlist, trace__sys_enter,
+ trace__sys_exit))
goto out_error_tp;
- perf_evlist__add_vfs_getname(evlist);
+ if (trace->trace_syscalls)
+ perf_evlist__add_vfs_getname(evlist);
+
+ if ((trace->trace_pgfaults & TRACE_PFMAJ) &&
+ perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MAJ))
+ goto out_error_tp;
+
+ if ((trace->trace_pgfaults & TRACE_PFMIN) &&
+ perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MIN))
+ goto out_error_tp;
if (trace->sched &&
perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
goto next_event;
}
- if (sample.raw_data == NULL) {
+ if (evsel->attr.type == PERF_TYPE_TRACEPOINT &&
+ sample.raw_data == NULL) {
fprintf(trace->output, "%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);
}
handler = evsel->handler;
- handler(trace, evsel, &sample);
+ handler(trace, evsel, event, &sample);
next_event:
perf_evlist__mmap_consume(evlist, i);
if (evsel == NULL)
evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
"syscalls:sys_enter");
- if (evsel == NULL) {
- pr_err("Data file does not have raw_syscalls:sys_enter event\n");
- goto out;
- }
- if (perf_evsel__init_syscall_tp(evsel, trace__sys_enter) < 0 ||
- perf_evsel__init_sc_tp_ptr_field(evsel, args)) {
+ if (evsel &&
+ (perf_evsel__init_syscall_tp(evsel, trace__sys_enter) < 0 ||
+ perf_evsel__init_sc_tp_ptr_field(evsel, args))) {
pr_err("Error during initialize raw_syscalls:sys_enter event\n");
goto out;
}
if (evsel == NULL)
evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
"syscalls:sys_exit");
- if (evsel == NULL) {
- pr_err("Data file does not have raw_syscalls:sys_exit event\n");
+ if (evsel &&
+ (perf_evsel__init_syscall_tp(evsel, trace__sys_exit) < 0 ||
+ perf_evsel__init_sc_tp_uint_field(evsel, ret))) {
+ pr_err("Error during initialize raw_syscalls:sys_exit event\n");
goto out;
}
- if (perf_evsel__init_syscall_tp(evsel, trace__sys_exit) < 0 ||
- perf_evsel__init_sc_tp_uint_field(evsel, ret)) {
- pr_err("Error during initialize raw_syscalls:sys_exit event\n");
- goto out;
+ evlist__for_each(session->evlist, evsel) {
+ if (evsel->attr.type == PERF_TYPE_SOFTWARE &&
+ (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ||
+ evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
+ evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS))
+ evsel->handler = trace__pgfault;
}
err = parse_target_str(trace);
printed += fprintf(fp, " %s (%d), ", thread__comm_str(thread), thread->tid);
printed += fprintf(fp, "%lu events, ", ttrace->nr_events);
printed += fprintf(fp, "%.1f%%", ratio);
+ if (ttrace->pfmaj)
+ printed += fprintf(fp, ", %lu majfaults", ttrace->pfmaj);
+ if (ttrace->pfmin)
+ printed += fprintf(fp, ", %lu minfaults", ttrace->pfmin);
printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms);
printed += thread__dump_stats(ttrace, trace, fp);
return trace->output == NULL ? -errno : 0;
}
+static int parse_pagefaults(const struct option *opt, const char *str,
+ int unset __maybe_unused)
+{
+ int *trace_pgfaults = opt->value;
+
+ if (strcmp(str, "all") == 0)
+ *trace_pgfaults |= TRACE_PFMAJ | TRACE_PFMIN;
+ else if (strcmp(str, "maj") == 0)
+ *trace_pgfaults |= TRACE_PFMAJ;
+ else if (strcmp(str, "min") == 0)
+ *trace_pgfaults |= TRACE_PFMIN;
+ else
+ return -1;
+
+ return 0;
+}
+
int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
{
const char * const trace_usage[] = {
},
.output = stdout,
.show_comm = true,
+ .trace_syscalls = true,
};
const char *output_name = NULL;
const char *ev_qualifier_str = NULL;
"Show only syscall summary with statistics"),
OPT_BOOLEAN('S', "with-summary", &trace.summary,
"Show all syscalls and summary with statistics"),
+ OPT_CALLBACK_DEFAULT('F', "pf", &trace.trace_pgfaults, "all|maj|min",
+ "Trace pagefaults", parse_pagefaults, "maj"),
+ OPT_BOOLEAN(0, "syscalls", &trace.trace_syscalls, "Trace syscalls"),
OPT_END()
};
int err;
char bf[BUFSIZ];
- if ((argc > 1) && (strcmp(argv[1], "record") == 0))
- return trace__record(argc-2, &argv[2]);
+ argc = parse_options(argc, argv, trace_options, trace_usage,
+ PARSE_OPT_STOP_AT_NON_OPTION);
- argc = parse_options(argc, argv, trace_options, trace_usage, 0);
+ if (trace.trace_pgfaults) {
+ trace.opts.sample_address = true;
+ trace.opts.sample_time = true;
+ }
+
+ if ((argc >= 1) && (strcmp(argv[0], "record") == 0))
+ return trace__record(&trace, argc-1, &argv[1]);
/* summary_only implies summary option, but don't overwrite summary if set */
if (trace.summary_only)
trace.summary = trace.summary_only;
+ if (!trace.trace_syscalls && !trace.trace_pgfaults) {
+ pr_err("Please specify something to trace.\n");
+ return -1;
+ }
+
if (output_name != NULL) {
err = trace__open_output(&trace, output_name);
if (err < 0) {
projects / cascardo / linux.git / blobdiff