tmp_suning_uos_patched/tools/perf/builtin-script.c
Feng Tang 49e639e256 perf script: Add more filter to find_scripts()
As suggested by Arnaldo, many scripts have their own usages and need
capture specific events or tracepoints, so only those scripts whose
target events match the events in current perf data file should be
listed in the script browser menu.

This patch will add the event match checking, by opening "xxx-record"
script to cherry pick out all events name and comparing them with
those inside the perf data file.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1351569369-26732-3-git-send-email-feng.tang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-10-29 11:46:23 -02:00

1554 lines
36 KiB
C

#include "builtin.h"
#include "perf.h"
#include "util/cache.h"
#include "util/debug.h"
#include "util/exec_cmd.h"
#include "util/header.h"
#include "util/parse-options.h"
#include "util/session.h"
#include "util/tool.h"
#include "util/symbol.h"
#include "util/thread.h"
#include "util/trace-event.h"
#include "util/util.h"
#include "util/evlist.h"
#include "util/evsel.h"
#include "util/sort.h"
#include <linux/bitmap.h>
static char const *script_name;
static char const *generate_script_lang;
static bool debug_mode;
static u64 last_timestamp;
static u64 nr_unordered;
extern const struct option record_options[];
static bool no_callchain;
static bool system_wide;
static const char *cpu_list;
static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
enum perf_output_field {
PERF_OUTPUT_COMM = 1U << 0,
PERF_OUTPUT_TID = 1U << 1,
PERF_OUTPUT_PID = 1U << 2,
PERF_OUTPUT_TIME = 1U << 3,
PERF_OUTPUT_CPU = 1U << 4,
PERF_OUTPUT_EVNAME = 1U << 5,
PERF_OUTPUT_TRACE = 1U << 6,
PERF_OUTPUT_IP = 1U << 7,
PERF_OUTPUT_SYM = 1U << 8,
PERF_OUTPUT_DSO = 1U << 9,
PERF_OUTPUT_ADDR = 1U << 10,
PERF_OUTPUT_SYMOFFSET = 1U << 11,
};
struct output_option {
const char *str;
enum perf_output_field field;
} all_output_options[] = {
{.str = "comm", .field = PERF_OUTPUT_COMM},
{.str = "tid", .field = PERF_OUTPUT_TID},
{.str = "pid", .field = PERF_OUTPUT_PID},
{.str = "time", .field = PERF_OUTPUT_TIME},
{.str = "cpu", .field = PERF_OUTPUT_CPU},
{.str = "event", .field = PERF_OUTPUT_EVNAME},
{.str = "trace", .field = PERF_OUTPUT_TRACE},
{.str = "ip", .field = PERF_OUTPUT_IP},
{.str = "sym", .field = PERF_OUTPUT_SYM},
{.str = "dso", .field = PERF_OUTPUT_DSO},
{.str = "addr", .field = PERF_OUTPUT_ADDR},
{.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
};
/* default set to maintain compatibility with current format */
static struct {
bool user_set;
bool wildcard_set;
u64 fields;
u64 invalid_fields;
} output[PERF_TYPE_MAX] = {
[PERF_TYPE_HARDWARE] = {
.user_set = false,
.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
.invalid_fields = PERF_OUTPUT_TRACE,
},
[PERF_TYPE_SOFTWARE] = {
.user_set = false,
.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
.invalid_fields = PERF_OUTPUT_TRACE,
},
[PERF_TYPE_TRACEPOINT] = {
.user_set = false,
.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE,
},
[PERF_TYPE_RAW] = {
.user_set = false,
.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
.invalid_fields = PERF_OUTPUT_TRACE,
},
};
static bool output_set_by_user(void)
{
int j;
for (j = 0; j < PERF_TYPE_MAX; ++j) {
if (output[j].user_set)
return true;
}
return false;
}
static const char *output_field2str(enum perf_output_field field)
{
int i, imax = ARRAY_SIZE(all_output_options);
const char *str = "";
for (i = 0; i < imax; ++i) {
if (all_output_options[i].field == field) {
str = all_output_options[i].str;
break;
}
}
return str;
}
#define PRINT_FIELD(x) (output[attr->type].fields & PERF_OUTPUT_##x)
static int perf_evsel__check_stype(struct perf_evsel *evsel,
u64 sample_type, const char *sample_msg,
enum perf_output_field field)
{
struct perf_event_attr *attr = &evsel->attr;
int type = attr->type;
const char *evname;
if (attr->sample_type & sample_type)
return 0;
if (output[type].user_set) {
evname = perf_evsel__name(evsel);
pr_err("Samples for '%s' event do not have %s attribute set. "
"Cannot print '%s' field.\n",
evname, sample_msg, output_field2str(field));
return -1;
}
/* user did not ask for it explicitly so remove from the default list */
output[type].fields &= ~field;
evname = perf_evsel__name(evsel);
pr_debug("Samples for '%s' event do not have %s attribute set. "
"Skipping '%s' field.\n",
evname, sample_msg, output_field2str(field));
return 0;
}
static int perf_evsel__check_attr(struct perf_evsel *evsel,
struct perf_session *session)
{
struct perf_event_attr *attr = &evsel->attr;
if (PRINT_FIELD(TRACE) &&
!perf_session__has_traces(session, "record -R"))
return -EINVAL;
if (PRINT_FIELD(IP)) {
if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP",
PERF_OUTPUT_IP))
return -EINVAL;
if (!no_callchain &&
!(attr->sample_type & PERF_SAMPLE_CALLCHAIN))
symbol_conf.use_callchain = false;
}
if (PRINT_FIELD(ADDR) &&
perf_evsel__check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR",
PERF_OUTPUT_ADDR))
return -EINVAL;
if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
pr_err("Display of symbols requested but neither sample IP nor "
"sample address\nis selected. Hence, no addresses to convert "
"to symbols.\n");
return -EINVAL;
}
if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) {
pr_err("Display of offsets requested but symbol is not"
"selected.\n");
return -EINVAL;
}
if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
pr_err("Display of DSO requested but neither sample IP nor "
"sample address\nis selected. Hence, no addresses to convert "
"to DSO.\n");
return -EINVAL;
}
if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID",
PERF_OUTPUT_TID|PERF_OUTPUT_PID))
return -EINVAL;
if (PRINT_FIELD(TIME) &&
perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME",
PERF_OUTPUT_TIME))
return -EINVAL;
if (PRINT_FIELD(CPU) &&
perf_evsel__check_stype(evsel, PERF_SAMPLE_CPU, "CPU",
PERF_OUTPUT_CPU))
return -EINVAL;
return 0;
}
/*
* verify all user requested events exist and the samples
* have the expected data
*/
static int perf_session__check_output_opt(struct perf_session *session)
{
int j;
struct perf_evsel *evsel;
for (j = 0; j < PERF_TYPE_MAX; ++j) {
evsel = perf_session__find_first_evtype(session, j);
/*
* even if fields is set to 0 (ie., show nothing) event must
* exist if user explicitly includes it on the command line
*/
if (!evsel && output[j].user_set && !output[j].wildcard_set) {
pr_err("%s events do not exist. "
"Remove corresponding -f option to proceed.\n",
event_type(j));
return -1;
}
if (evsel && output[j].fields &&
perf_evsel__check_attr(evsel, session))
return -1;
}
return 0;
}
static void print_sample_start(struct perf_sample *sample,
struct thread *thread,
struct perf_evsel *evsel)
{
struct perf_event_attr *attr = &evsel->attr;
const char *evname = NULL;
unsigned long secs;
unsigned long usecs;
unsigned long long nsecs;
if (PRINT_FIELD(COMM)) {
if (latency_format)
printf("%8.8s ", thread->comm);
else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
printf("%s ", thread->comm);
else
printf("%16s ", thread->comm);
}
if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
printf("%5d/%-5d ", sample->pid, sample->tid);
else if (PRINT_FIELD(PID))
printf("%5d ", sample->pid);
else if (PRINT_FIELD(TID))
printf("%5d ", sample->tid);
if (PRINT_FIELD(CPU)) {
if (latency_format)
printf("%3d ", sample->cpu);
else
printf("[%03d] ", sample->cpu);
}
if (PRINT_FIELD(TIME)) {
nsecs = sample->time;
secs = nsecs / NSECS_PER_SEC;
nsecs -= secs * NSECS_PER_SEC;
usecs = nsecs / NSECS_PER_USEC;
printf("%5lu.%06lu: ", secs, usecs);
}
if (PRINT_FIELD(EVNAME)) {
evname = perf_evsel__name(evsel);
printf("%s: ", evname ? evname : "[unknown]");
}
}
static bool is_bts_event(struct perf_event_attr *attr)
{
return ((attr->type == PERF_TYPE_HARDWARE) &&
(attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
(attr->sample_period == 1));
}
static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
{
if ((attr->type == PERF_TYPE_SOFTWARE) &&
((attr->config == PERF_COUNT_SW_PAGE_FAULTS) ||
(attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN) ||
(attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
return true;
if (is_bts_event(attr))
return true;
return false;
}
static void print_sample_addr(union perf_event *event,
struct perf_sample *sample,
struct machine *machine,
struct thread *thread,
struct perf_event_attr *attr)
{
struct addr_location al;
u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
printf("%16" PRIx64, sample->addr);
if (!sample_addr_correlates_sym(attr))
return;
thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
sample->addr, &al);
if (!al.map)
thread__find_addr_map(thread, machine, cpumode, MAP__VARIABLE,
sample->addr, &al);
al.cpu = sample->cpu;
al.sym = NULL;
if (al.map)
al.sym = map__find_symbol(al.map, al.addr, NULL);
if (PRINT_FIELD(SYM)) {
printf(" ");
if (PRINT_FIELD(SYMOFFSET))
symbol__fprintf_symname_offs(al.sym, &al, stdout);
else
symbol__fprintf_symname(al.sym, stdout);
}
if (PRINT_FIELD(DSO)) {
printf(" (");
map__fprintf_dsoname(al.map, stdout);
printf(")");
}
}
static void print_sample_bts(union perf_event *event,
struct perf_sample *sample,
struct perf_evsel *evsel,
struct machine *machine,
struct thread *thread)
{
struct perf_event_attr *attr = &evsel->attr;
/* print branch_from information */
if (PRINT_FIELD(IP)) {
if (!symbol_conf.use_callchain)
printf(" ");
else
printf("\n");
perf_evsel__print_ip(evsel, event, sample, machine,
PRINT_FIELD(SYM), PRINT_FIELD(DSO),
PRINT_FIELD(SYMOFFSET));
}
printf(" => ");
/* print branch_to information */
if (PRINT_FIELD(ADDR))
print_sample_addr(event, sample, machine, thread, attr);
printf("\n");
}
static void process_event(union perf_event *event, struct perf_sample *sample,
struct perf_evsel *evsel, struct machine *machine,
struct addr_location *al)
{
struct perf_event_attr *attr = &evsel->attr;
struct thread *thread = al->thread;
if (output[attr->type].fields == 0)
return;
print_sample_start(sample, thread, evsel);
if (is_bts_event(attr)) {
print_sample_bts(event, sample, evsel, machine, thread);
return;
}
if (PRINT_FIELD(TRACE))
event_format__print(evsel->tp_format, sample->cpu,
sample->raw_data, sample->raw_size);
if (PRINT_FIELD(ADDR))
print_sample_addr(event, sample, machine, thread, attr);
if (PRINT_FIELD(IP)) {
if (!symbol_conf.use_callchain)
printf(" ");
else
printf("\n");
perf_evsel__print_ip(evsel, event, sample, machine,
PRINT_FIELD(SYM), PRINT_FIELD(DSO),
PRINT_FIELD(SYMOFFSET));
}
printf("\n");
}
static int default_start_script(const char *script __maybe_unused,
int argc __maybe_unused,
const char **argv __maybe_unused)
{
return 0;
}
static int default_stop_script(void)
{
return 0;
}
static int default_generate_script(struct pevent *pevent __maybe_unused,
const char *outfile __maybe_unused)
{
return 0;
}
static struct scripting_ops default_scripting_ops = {
.start_script = default_start_script,
.stop_script = default_stop_script,
.process_event = process_event,
.generate_script = default_generate_script,
};
static struct scripting_ops *scripting_ops;
static void setup_scripting(void)
{
setup_perl_scripting();
setup_python_scripting();
scripting_ops = &default_scripting_ops;
}
static int cleanup_scripting(void)
{
pr_debug("\nperf script stopped\n");
return scripting_ops->stop_script();
}
static int process_sample_event(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample,
struct perf_evsel *evsel,
struct machine *machine)
{
struct addr_location al;
struct thread *thread = machine__findnew_thread(machine, event->ip.tid);
if (thread == NULL) {
pr_debug("problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
if (debug_mode) {
if (sample->time < last_timestamp) {
pr_err("Samples misordered, previous: %" PRIu64
" this: %" PRIu64 "\n", last_timestamp,
sample->time);
nr_unordered++;
}
last_timestamp = sample->time;
return 0;
}
if (perf_event__preprocess_sample(event, machine, &al, sample, 0) < 0) {
pr_err("problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
if (al.filtered)
return 0;
if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
return 0;
scripting_ops->process_event(event, sample, evsel, machine, &al);
evsel->hists.stats.total_period += sample->period;
return 0;
}
static struct perf_tool perf_script = {
.sample = process_sample_event,
.mmap = perf_event__process_mmap,
.comm = perf_event__process_comm,
.exit = perf_event__process_exit,
.fork = perf_event__process_fork,
.attr = perf_event__process_attr,
.event_type = perf_event__process_event_type,
.tracing_data = perf_event__process_tracing_data,
.build_id = perf_event__process_build_id,
.ordered_samples = true,
.ordering_requires_timestamps = true,
};
extern volatile int session_done;
static void sig_handler(int sig __maybe_unused)
{
session_done = 1;
}
static int __cmd_script(struct perf_session *session)
{
int ret;
signal(SIGINT, sig_handler);
ret = perf_session__process_events(session, &perf_script);
if (debug_mode)
pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
return ret;
}
struct script_spec {
struct list_head node;
struct scripting_ops *ops;
char spec[0];
};
static LIST_HEAD(script_specs);
static struct script_spec *script_spec__new(const char *spec,
struct scripting_ops *ops)
{
struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
if (s != NULL) {
strcpy(s->spec, spec);
s->ops = ops;
}
return s;
}
static void script_spec__add(struct script_spec *s)
{
list_add_tail(&s->node, &script_specs);
}
static struct script_spec *script_spec__find(const char *spec)
{
struct script_spec *s;
list_for_each_entry(s, &script_specs, node)
if (strcasecmp(s->spec, spec) == 0)
return s;
return NULL;
}
static struct script_spec *script_spec__findnew(const char *spec,
struct scripting_ops *ops)
{
struct script_spec *s = script_spec__find(spec);
if (s)
return s;
s = script_spec__new(spec, ops);
if (!s)
return NULL;
script_spec__add(s);
return s;
}
int script_spec_register(const char *spec, struct scripting_ops *ops)
{
struct script_spec *s;
s = script_spec__find(spec);
if (s)
return -1;
s = script_spec__findnew(spec, ops);
if (!s)
return -1;
return 0;
}
static struct scripting_ops *script_spec__lookup(const char *spec)
{
struct script_spec *s = script_spec__find(spec);
if (!s)
return NULL;
return s->ops;
}
static void list_available_languages(void)
{
struct script_spec *s;
fprintf(stderr, "\n");
fprintf(stderr, "Scripting language extensions (used in "
"perf script -s [spec:]script.[spec]):\n\n");
list_for_each_entry(s, &script_specs, node)
fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
fprintf(stderr, "\n");
}
static int parse_scriptname(const struct option *opt __maybe_unused,
const char *str, int unset __maybe_unused)
{
char spec[PATH_MAX];
const char *script, *ext;
int len;
if (strcmp(str, "lang") == 0) {
list_available_languages();
exit(0);
}
script = strchr(str, ':');
if (script) {
len = script - str;
if (len >= PATH_MAX) {
fprintf(stderr, "invalid language specifier");
return -1;
}
strncpy(spec, str, len);
spec[len] = '\0';
scripting_ops = script_spec__lookup(spec);
if (!scripting_ops) {
fprintf(stderr, "invalid language specifier");
return -1;
}
script++;
} else {
script = str;
ext = strrchr(script, '.');
if (!ext) {
fprintf(stderr, "invalid script extension");
return -1;
}
scripting_ops = script_spec__lookup(++ext);
if (!scripting_ops) {
fprintf(stderr, "invalid script extension");
return -1;
}
}
script_name = strdup(script);
return 0;
}
static int parse_output_fields(const struct option *opt __maybe_unused,
const char *arg, int unset __maybe_unused)
{
char *tok;
int i, imax = sizeof(all_output_options) / sizeof(struct output_option);
int j;
int rc = 0;
char *str = strdup(arg);
int type = -1;
if (!str)
return -ENOMEM;
/* first word can state for which event type the user is specifying
* the fields. If no type exists, the specified fields apply to all
* event types found in the file minus the invalid fields for a type.
*/
tok = strchr(str, ':');
if (tok) {
*tok = '\0';
tok++;
if (!strcmp(str, "hw"))
type = PERF_TYPE_HARDWARE;
else if (!strcmp(str, "sw"))
type = PERF_TYPE_SOFTWARE;
else if (!strcmp(str, "trace"))
type = PERF_TYPE_TRACEPOINT;
else if (!strcmp(str, "raw"))
type = PERF_TYPE_RAW;
else {
fprintf(stderr, "Invalid event type in field string.\n");
rc = -EINVAL;
goto out;
}
if (output[type].user_set)
pr_warning("Overriding previous field request for %s events.\n",
event_type(type));
output[type].fields = 0;
output[type].user_set = true;
output[type].wildcard_set = false;
} else {
tok = str;
if (strlen(str) == 0) {
fprintf(stderr,
"Cannot set fields to 'none' for all event types.\n");
rc = -EINVAL;
goto out;
}
if (output_set_by_user())
pr_warning("Overriding previous field request for all events.\n");
for (j = 0; j < PERF_TYPE_MAX; ++j) {
output[j].fields = 0;
output[j].user_set = true;
output[j].wildcard_set = true;
}
}
tok = strtok(tok, ",");
while (tok) {
for (i = 0; i < imax; ++i) {
if (strcmp(tok, all_output_options[i].str) == 0)
break;
}
if (i == imax) {
fprintf(stderr, "Invalid field requested.\n");
rc = -EINVAL;
goto out;
}
if (type == -1) {
/* add user option to all events types for
* which it is valid
*/
for (j = 0; j < PERF_TYPE_MAX; ++j) {
if (output[j].invalid_fields & all_output_options[i].field) {
pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
all_output_options[i].str, event_type(j));
} else
output[j].fields |= all_output_options[i].field;
}
} else {
if (output[type].invalid_fields & all_output_options[i].field) {
fprintf(stderr, "\'%s\' not valid for %s events.\n",
all_output_options[i].str, event_type(type));
rc = -EINVAL;
goto out;
}
output[type].fields |= all_output_options[i].field;
}
tok = strtok(NULL, ",");
}
if (type >= 0) {
if (output[type].fields == 0) {
pr_debug("No fields requested for %s type. "
"Events will not be displayed.\n", event_type(type));
}
}
out:
free(str);
return rc;
}
/* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
static int is_directory(const char *base_path, const struct dirent *dent)
{
char path[PATH_MAX];
struct stat st;
sprintf(path, "%s/%s", base_path, dent->d_name);
if (stat(path, &st))
return 0;
return S_ISDIR(st.st_mode);
}
#define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
lang_next) \
if ((lang_dirent.d_type == DT_DIR || \
(lang_dirent.d_type == DT_UNKNOWN && \
is_directory(scripts_path, &lang_dirent))) && \
(strcmp(lang_dirent.d_name, ".")) && \
(strcmp(lang_dirent.d_name, "..")))
#define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
script_next) \
if (script_dirent.d_type != DT_DIR && \
(script_dirent.d_type != DT_UNKNOWN || \
!is_directory(lang_path, &script_dirent)))
#define RECORD_SUFFIX "-record"
#define REPORT_SUFFIX "-report"
struct script_desc {
struct list_head node;
char *name;
char *half_liner;
char *args;
};
static LIST_HEAD(script_descs);
static struct script_desc *script_desc__new(const char *name)
{
struct script_desc *s = zalloc(sizeof(*s));
if (s != NULL && name)
s->name = strdup(name);
return s;
}
static void script_desc__delete(struct script_desc *s)
{
free(s->name);
free(s->half_liner);
free(s->args);
free(s);
}
static void script_desc__add(struct script_desc *s)
{
list_add_tail(&s->node, &script_descs);
}
static struct script_desc *script_desc__find(const char *name)
{
struct script_desc *s;
list_for_each_entry(s, &script_descs, node)
if (strcasecmp(s->name, name) == 0)
return s;
return NULL;
}
static struct script_desc *script_desc__findnew(const char *name)
{
struct script_desc *s = script_desc__find(name);
if (s)
return s;
s = script_desc__new(name);
if (!s)
goto out_delete_desc;
script_desc__add(s);
return s;
out_delete_desc:
script_desc__delete(s);
return NULL;
}
static const char *ends_with(const char *str, const char *suffix)
{
size_t suffix_len = strlen(suffix);
const char *p = str;
if (strlen(str) > suffix_len) {
p = str + strlen(str) - suffix_len;
if (!strncmp(p, suffix, suffix_len))
return p;
}
return NULL;
}
static char *ltrim(char *str)
{
int len = strlen(str);
while (len && isspace(*str)) {
len--;
str++;
}
return str;
}
static int read_script_info(struct script_desc *desc, const char *filename)
{
char line[BUFSIZ], *p;
FILE *fp;
fp = fopen(filename, "r");
if (!fp)
return -1;
while (fgets(line, sizeof(line), fp)) {
p = ltrim(line);
if (strlen(p) == 0)
continue;
if (*p != '#')
continue;
p++;
if (strlen(p) && *p == '!')
continue;
p = ltrim(p);
if (strlen(p) && p[strlen(p) - 1] == '\n')
p[strlen(p) - 1] = '\0';
if (!strncmp(p, "description:", strlen("description:"))) {
p += strlen("description:");
desc->half_liner = strdup(ltrim(p));
continue;
}
if (!strncmp(p, "args:", strlen("args:"))) {
p += strlen("args:");
desc->args = strdup(ltrim(p));
continue;
}
}
fclose(fp);
return 0;
}
static char *get_script_root(struct dirent *script_dirent, const char *suffix)
{
char *script_root, *str;
script_root = strdup(script_dirent->d_name);
if (!script_root)
return NULL;
str = (char *)ends_with(script_root, suffix);
if (!str) {
free(script_root);
return NULL;
}
*str = '\0';
return script_root;
}
static int list_available_scripts(const struct option *opt __maybe_unused,
const char *s __maybe_unused,
int unset __maybe_unused)
{
struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
char scripts_path[MAXPATHLEN];
DIR *scripts_dir, *lang_dir;
char script_path[MAXPATHLEN];
char lang_path[MAXPATHLEN];
struct script_desc *desc;
char first_half[BUFSIZ];
char *script_root;
snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
scripts_dir = opendir(scripts_path);
if (!scripts_dir)
return -1;
for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
lang_dirent.d_name);
lang_dir = opendir(lang_path);
if (!lang_dir)
continue;
for_each_script(lang_path, lang_dir, script_dirent, script_next) {
script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
if (script_root) {
desc = script_desc__findnew(script_root);
snprintf(script_path, MAXPATHLEN, "%s/%s",
lang_path, script_dirent.d_name);
read_script_info(desc, script_path);
free(script_root);
}
}
}
fprintf(stdout, "List of available trace scripts:\n");
list_for_each_entry(desc, &script_descs, node) {
sprintf(first_half, "%s %s", desc->name,
desc->args ? desc->args : "");
fprintf(stdout, " %-36s %s\n", first_half,
desc->half_liner ? desc->half_liner : "");
}
exit(0);
}
/*
* Some scripts specify the required events in their "xxx-record" file,
* this function will check if the events in perf.data match those
* mentioned in the "xxx-record".
*
* Fixme: All existing "xxx-record" are all in good formats "-e event ",
* which is covered well now. And new parsing code should be added to
* cover the future complexing formats like event groups etc.
*/
static int check_ev_match(char *dir_name, char *scriptname,
struct perf_session *session)
{
char filename[MAXPATHLEN], evname[128];
char line[BUFSIZ], *p;
struct perf_evsel *pos;
int match, len;
FILE *fp;
sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);
fp = fopen(filename, "r");
if (!fp)
return -1;
while (fgets(line, sizeof(line), fp)) {
p = ltrim(line);
if (*p == '#')
continue;
while (strlen(p)) {
p = strstr(p, "-e");
if (!p)
break;
p += 2;
p = ltrim(p);
len = strcspn(p, " \t");
if (!len)
break;
snprintf(evname, len + 1, "%s", p);
match = 0;
list_for_each_entry(pos,
&session->evlist->entries, node) {
if (!strcmp(perf_evsel__name(pos), evname)) {
match = 1;
break;
}
}
if (!match) {
fclose(fp);
return -1;
}
}
}
fclose(fp);
return 0;
}
/*
* Return -1 if none is found, otherwise the actual scripts number.
*
* Currently the only user of this function is the script browser, which
* will list all statically runnable scripts, select one, execute it and
* show the output in a perf browser.
*/
int find_scripts(char **scripts_array, char **scripts_path_array)
{
struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
DIR *scripts_dir, *lang_dir;
struct perf_session *session;
char *temp;
int i = 0;
session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
if (!session)
return -1;
snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
scripts_dir = opendir(scripts_path);
if (!scripts_dir) {
perf_session__delete(session);
return -1;
}
for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
lang_dirent.d_name);
#ifdef NO_LIBPERL
if (strstr(lang_path, "perl"))
continue;
#endif
#ifdef NO_LIBPYTHON
if (strstr(lang_path, "python"))
continue;
#endif
lang_dir = opendir(lang_path);
if (!lang_dir)
continue;
for_each_script(lang_path, lang_dir, script_dirent, script_next) {
/* Skip those real time scripts: xxxtop.p[yl] */
if (strstr(script_dirent.d_name, "top."))
continue;
sprintf(scripts_path_array[i], "%s/%s", lang_path,
script_dirent.d_name);
temp = strchr(script_dirent.d_name, '.');
snprintf(scripts_array[i],
(temp - script_dirent.d_name) + 1,
"%s", script_dirent.d_name);
if (check_ev_match(lang_path,
scripts_array[i], session))
continue;
i++;
}
closedir(lang_dir);
}
closedir(scripts_dir);
perf_session__delete(session);
return i;
}
static char *get_script_path(const char *script_root, const char *suffix)
{
struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
char scripts_path[MAXPATHLEN];
char script_path[MAXPATHLEN];
DIR *scripts_dir, *lang_dir;
char lang_path[MAXPATHLEN];
char *__script_root;
snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
scripts_dir = opendir(scripts_path);
if (!scripts_dir)
return NULL;
for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
lang_dirent.d_name);
lang_dir = opendir(lang_path);
if (!lang_dir)
continue;
for_each_script(lang_path, lang_dir, script_dirent, script_next) {
__script_root = get_script_root(&script_dirent, suffix);
if (__script_root && !strcmp(script_root, __script_root)) {
free(__script_root);
closedir(lang_dir);
closedir(scripts_dir);
snprintf(script_path, MAXPATHLEN, "%s/%s",
lang_path, script_dirent.d_name);
return strdup(script_path);
}
free(__script_root);
}
closedir(lang_dir);
}
closedir(scripts_dir);
return NULL;
}
static bool is_top_script(const char *script_path)
{
return ends_with(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 int have_cmd(int argc, const char **argv)
{
char **__argv = malloc(sizeof(const char *) * argc);
if (!__argv) {
pr_err("malloc failed\n");
return -1;
}
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);
system_wide = (argc == 0);
return 0;
}
int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
{
bool show_full_info = false;
char *rec_script_path = NULL;
char *rep_script_path = NULL;
struct perf_session *session;
char *script_path = NULL;
const char **__argv;
int i, j, err;
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_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
"file", "vmlinux pathname"),
OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
"file", "kallsyms pathname"),
OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
"When printing symbols do not display call chain"),
OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
"Look for files with symbols relative to this directory"),
OPT_CALLBACK('f', "fields", NULL, "str",
"comma separated output fields prepend with 'type:'. "
"Valid types: hw,sw,trace,raw. "
"Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
"addr,symoff", parse_output_fields),
OPT_BOOLEAN('a', "all-cpus", &system_wide,
"system-wide collection from all CPUs"),
OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
"only consider these symbols"),
OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
"only display events for these comms"),
OPT_BOOLEAN('I', "show-info", &show_full_info,
"display extended information from perf.data file"),
OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
"Show the path of [kernel.kallsyms]"),
OPT_END()
};
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
};
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");
return -1;
}
pid = fork();
if (pid < 0) {
perror("failed to fork");
return -1;
}
if (!pid) {
j = 0;
dup2(live_pipe[1], 1);
close(live_pipe[0]);
if (is_top_script(argv[0])) {
system_wide = true;
} else if (!system_wide) {
if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
err = -1;
goto out;
}
}
__argv = malloc((argc + 6) * sizeof(const char *));
if (!__argv) {
pr_err("malloc failed\n");
err = -ENOMEM;
goto out;
}
__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) {
pr_err("malloc failed\n");
err = -ENOMEM;
goto out;
}
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) {
j = 0;
if (!rec_script_path)
system_wide = false;
else if (!system_wide) {
if (have_cmd(argc - 1, &argv[1]) != 0) {
err = -1;
goto out;
}
}
__argv = malloc((argc + 2) * sizeof(const char *));
if (!__argv) {
pr_err("malloc failed\n");
err = -ENOMEM;
goto out;
}
__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,
&perf_script);
if (session == NULL)
return -ENOMEM;
if (cpu_list) {
if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap))
return -1;
}
perf_session__fprintf_info(session, stdout, show_full_info);
if (!no_callchain)
symbol_conf.use_callchain = true;
else
symbol_conf.use_callchain = false;
if (generate_script_lang) {
struct stat perf_stat;
int input;
if (output_set_by_user()) {
fprintf(stderr,
"custom fields not supported for generated scripts");
return -1;
}
input = open(session->filename, O_RDONLY); /* input_name */
if (input < 0) {
perror("failed to open file");
return -1;
}
err = fstat(input, &perf_stat);
if (err < 0) {
perror("failed to stat file");
return -1;
}
if (!perf_stat.st_size) {
fprintf(stderr, "zero-sized file, nothing to do!\n");
return 0;
}
scripting_ops = script_spec__lookup(generate_script_lang);
if (!scripting_ops) {
fprintf(stderr, "invalid language specifier");
return -1;
}
err = scripting_ops->generate_script(session->pevent,
"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 = perf_session__check_output_opt(session);
if (err < 0)
goto out;
err = __cmd_script(session);
perf_session__delete(session);
cleanup_scripting();
out:
return err;
}