// SPDX-License-Identifier: GPL-2.0
/*
* builtin-list.c
*
* Builtin list command: list all event types
*
* Copyright (C) 2009, Thomas Gleixner <tglx@linutronix.de>
* Copyright (C) 2008-2009, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
* Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
*/
#include "builtin.h"
#include "util/print-events.h"
#include "util/pmus.h"
#include "util/pmu.h"
#include "util/debug.h"
#include "util/metricgroup.h"
#include "util/pfm.h"
#include "util/string2.h"
#include "util/strlist.h"
#include "util/strbuf.h"
#include "util/tool_pmu.h"
#include <subcmd/pager.h>
#include <subcmd/parse-options.h>
#include <linux/zalloc.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
/**
* struct print_state - State and configuration passed to the default_print
* functions.
*/
struct print_state {
/** @fp: File to write output to. */
FILE *fp;
/**
* @pmu_glob: Optionally restrict PMU and metric matching to PMU or
* debugfs subsystem name.
*/
char *pmu_glob;
/** @event_glob: Optional pattern matching glob. */
char *event_glob;
/** @name_only: Print event or metric names only. */
bool name_only;
/** @desc: Print the event or metric description. */
bool desc;
/** @long_desc: Print longer event or metric description. */
bool long_desc;
/** @deprecated: Print deprecated events or metrics. */
bool deprecated;
/**
* @detailed: Print extra information on the perf event such as names
* and expressions used internally by events.
*/
bool detailed;
/** @metrics: Controls printing of metric and metric groups. */
bool metrics;
/** @metricgroups: Controls printing of metric and metric groups. */
bool metricgroups;
/** @exclude_abi: Exclude PMUs with types less than PERF_TYPE_MAX except PERF_TYPE_RAW. */
bool exclude_abi;
/** @last_topic: The last printed event topic. */
char *last_topic;
/** @last_metricgroups: The last printed metric group. */
char *last_metricgroups;
/** @visited_metrics: Metrics that are printed to avoid duplicates. */
struct strlist *visited_metrics;
};
static void default_print_start(void *ps)
{
struct print_state *print_state = ps;
if (!print_state->name_only && pager_in_use()) {
fprintf(print_state->fp,
"\nList of pre-defined events (to be used in -e or -M):\n\n" );
}
}
static void default_print_end(void *print_state __maybe_unused) {}
static const char *skip_spaces_or_commas(const char *str)
{
while (isspace(*str) || *str == ',' )
++str;
return str;
}
static void wordwrap(FILE *fp, const char *s, int start, int max, int corr)
{
int column = start;
int n;
bool saw_newline = false ;
bool comma = false ;
while (*s) {
int wlen = strcspn(s, " ,\t\n" );
const char *sep = comma ? "," : " " ;
if ((column + wlen >= max && column > start) || saw_newline) {
fprintf(fp, comma ? ",\n%*s" : "\n%*s" , start, "" );
column = start + corr;
}
if (column <= start)
sep = "" ;
n = fprintf(fp, "%s%.*s" , sep, wlen, s);
if (n <= 0)
break ;
saw_newline = s[wlen] == '\n' ;
s += wlen;
comma = s[0] == ',' ;
column += n;
s = skip_spaces_or_commas(s);
}
}
static void default_print_event(void *ps, const char *topic,
const char *pmu_name, u32 pmu_type,
const char *event_name, const char *event_alias,
const char *scale_unit __maybe_unused,
bool deprecated, const char *event_type_desc,
const char *desc, const char *long_desc,
const char *encoding_desc)
{
struct print_state *print_state = ps;
int pos;
FILE *fp = print_state->fp;
if (deprecated && !print_state->deprecated)
return ;
if (print_state->pmu_glob && pmu_name && !strglobmatch(pmu_name, print_state->pmu_glob))
return ;
if (print_state->exclude_abi && pmu_type < PERF_TYPE_MAX && pmu_type != PERF_TYPE_RAW)
return ;
if (print_state->event_glob &&
(!event_name || !strglobmatch(event_name, print_state->event_glob)) &&
(!event_alias || !strglobmatch(event_alias, print_state->event_glob)) &&
(!topic || !strglobmatch_nocase(topic, print_state->event_glob)))
return ;
if (print_state->name_only) {
if (event_alias && strlen(event_alias))
fprintf(fp, "%s " , event_alias);
else
fprintf(fp, "%s " , event_name);
return ;
}
if (strcmp(print_state->last_topic, topic ?: "" )) {
if (topic)
fprintf(fp, "\n%s:\n" , topic);
zfree(&print_state->last_topic);
print_state->last_topic = strdup(topic ?: "" );
}
if (event_alias && strlen(event_alias))
pos = fprintf(fp, " %s OR %s" , event_name, event_alias);
else
pos = fprintf(fp, " %s" , event_name);
if (!topic && event_type_desc) {
for (; pos < 53; pos++)
fputc(' ' , fp);
fprintf(fp, "[%s]\n" , event_type_desc);
} else
fputc('\n' , fp);
if (long_desc && print_state->long_desc)
desc = long_desc;
if (desc && (print_state->desc || print_state->long_desc)) {
char *desc_with_unit = NULL;
int desc_len = -1;
if (pmu_name && strcmp(pmu_name, "default_core" )) {
desc_len = strlen(desc);
desc_len = asprintf(&desc_with_unit,
desc_len > 0 && desc[desc_len - 1] != '.'
? "%s. Unit: %s" : "%s Unit: %s" ,
desc, pmu_name);
}
fprintf(fp, "%*s" , 8, "[" );
wordwrap(fp, desc_len > 0 ? desc_with_unit : desc, 8, pager_get_columns(), 0);
fprintf(fp, "]\n" );
free(desc_with_unit);
}
if (print_state->detailed && encoding_desc) {
fprintf(fp, "%*s" , 8, "" );
wordwrap(fp, encoding_desc, 8, pager_get_columns(), 0);
fputc('\n' , fp);
}
}
static void default_print_metric(void *ps,
const char *group,
const char *name,
const char *desc,
const char *long_desc,
const char *expr,
const char *threshold,
const char *unit __maybe_unused,
const char *pmu_name __maybe_unused)
{
struct print_state *print_state = ps;
FILE *fp = print_state->fp;
if (print_state->event_glob &&
(!print_state->metrics || !name || !strglobmatch(name, print_state->event_glob)) &&
(!print_state->metricgroups || !group || !strglobmatch(group, print_state->event_glob)))
return ;
if (!print_state->name_only && !print_state->last_metricgroups) {
if (print_state->metricgroups) {
fprintf(fp, "\nMetric Groups:\n" );
if (!print_state->metrics)
fputc('\n' , fp);
} else {
fprintf(fp, "\nMetrics:\n\n" );
}
}
if (!print_state->last_metricgroups ||
strcmp(print_state->last_metricgroups, group ?: "" )) {
if (group && print_state->metricgroups) {
if (print_state->name_only) {
fprintf(fp, "%s " , group);
} else {
const char *gdesc = print_state->desc
? describe_metricgroup(group)
: NULL;
const char *print_colon = "" ;
if (print_state->metrics) {
print_colon = ":" ;
fputc('\n' , fp);
}
if (gdesc)
fprintf(fp, "%s%s [%s]\n" , group, print_colon, gdesc);
else
fprintf(fp, "%s%s\n" , group, print_colon);
}
}
zfree(&print_state->last_metricgroups);
print_state->last_metricgroups = strdup(group ?: "" );
}
if (!print_state->metrics)
return ;
if (print_state->name_only) {
if (print_state->metrics &&
!strlist__has_entry(print_state->visited_metrics, name)) {
fprintf(fp, "%s " , name);
strlist__add(print_state->visited_metrics, name);
}
return ;
}
fprintf(fp, " %s\n" , name);
if (long_desc && print_state->long_desc) {
fprintf(fp, "%*s" , 8, "[" );
wordwrap(fp, long_desc, 8, pager_get_columns(), 0);
fprintf(fp, "]\n" );
} else if (desc && print_state->desc) {
fprintf(fp, "%*s" , 8, "[" );
wordwrap(fp, desc, 8, pager_get_columns(), 0);
fprintf(fp, "]\n" );
}
if (expr && print_state->detailed) {
fprintf(fp, "%*s" , 8, "[" );
wordwrap(fp, expr, 8, pager_get_columns(), 0);
fprintf(fp, "]\n" );
}
if (threshold && print_state->detailed) {
fprintf(fp, "%*s" , 8, "[" );
wordwrap(fp, threshold, 8, pager_get_columns(), 0);
fprintf(fp, "]\n" );
}
}
struct json_print_state {
/** @fp: File to write output to. */
FILE *fp;
/** Should a separator be printed prior to the next item? */
bool need_sep;
};
static void json_print_start(void *ps)
{
struct json_print_state *print_state = ps;
FILE *fp = print_state->fp;
fprintf(fp, "[\n" );
}
static void json_print_end(void *ps)
{
struct json_print_state *print_state = ps;
FILE *fp = print_state->fp;
fprintf(fp, "%s]\n" , print_state->need_sep ? "\n" : "" );
}
static void fix_escape_fprintf(FILE *fp, struct strbuf *buf, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
strbuf_setlen(buf, 0);
for (size_t fmt_pos = 0; fmt_pos < strlen(fmt); fmt_pos++) {
switch (fmt[fmt_pos]) {
case '%' :
fmt_pos++;
switch (fmt[fmt_pos]) {
case 's' : {
const char *s = va_arg(args, const char *);
strbuf_addstr(buf, s);
break ;
}
case 'S' : {
const char *s = va_arg(args, const char *);
for (size_t s_pos = 0; s_pos < strlen(s); s_pos++) {
switch (s[s_pos]) {
case '\n' :
strbuf_addstr(buf, "\\n" );
break ;
case '\r' :
strbuf_addstr(buf, "\\r" );
break ;
case '\\' :
fallthrough;
case '\"' :
strbuf_addch(buf, '\\' );
fallthrough;
default :
strbuf_addch(buf, s[s_pos]);
break ;
}
}
break ;
}
default :
pr_err("Unexpected format character '%c'\n" , fmt[fmt_pos]);
strbuf_addch(buf, '%' );
strbuf_addch(buf, fmt[fmt_pos]);
}
break ;
default :
strbuf_addch(buf, fmt[fmt_pos]);
break ;
}
}
va_end(args);
fputs(buf->buf, fp);
}
static void json_print_event(void *ps, const char *topic,
const char *pmu_name, u32 pmu_type __maybe_unused,
const char *event_name, const char *event_alias,
const char *scale_unit,
bool deprecated, const char *event_type_desc,
const char *desc, const char *long_desc,
const char *encoding_desc)
{
struct json_print_state *print_state = ps;
bool need_sep = false ;
FILE *fp = print_state->fp;
struct strbuf buf;
strbuf_init(&buf, 0);
fprintf(fp, "%s{\n" , print_state->need_sep ? ",\n" : "" );
print_state->need_sep = true ;
if (pmu_name) {
fix_escape_fprintf(fp, &buf, "\t\" Unit\": \" %S\"" , pmu_name);
need_sep = true ;
}
if (topic) {
fix_escape_fprintf(fp, &buf, "%s\t\" Topic\": \" %S\"" ,
need_sep ? ",\n" : "" ,
topic);
need_sep = true ;
}
if (event_name) {
fix_escape_fprintf(fp, &buf, "%s\t\" EventName\": \" %S\"" ,
need_sep ? ",\n" : "" ,
event_name);
need_sep = true ;
}
if (event_alias && strlen(event_alias)) {
fix_escape_fprintf(fp, &buf, "%s\t\" EventAlias\": \" %S\"" ,
need_sep ? ",\n" : "" ,
event_alias);
need_sep = true ;
}
if (scale_unit && strlen(scale_unit)) {
fix_escape_fprintf(fp, &buf, "%s\t\" ScaleUnit\": \" %S\"" ,
need_sep ? ",\n" : "" ,
scale_unit);
need_sep = true ;
}
if (event_type_desc) {
fix_escape_fprintf(fp, &buf, "%s\t\" EventType\": \" %S\"" ,
need_sep ? ",\n" : "" ,
event_type_desc);
need_sep = true ;
}
if (deprecated) {
fix_escape_fprintf(fp, &buf, "%s\t\" Deprecated\": \" %S\"" ,
need_sep ? ",\n" : "" ,
deprecated ? "1" : "0" );
need_sep = true ;
}
if (desc) {
fix_escape_fprintf(fp, &buf, "%s\t\" BriefDescription\": \" %S\"" ,
need_sep ? ",\n" : "" ,
desc);
need_sep = true ;
}
if (long_desc) {
fix_escape_fprintf(fp, &buf, "%s\t\" PublicDescription\": \" %S\"" ,
need_sep ? ",\n" : "" ,
long_desc);
need_sep = true ;
}
if (encoding_desc) {
fix_escape_fprintf(fp, &buf, "%s\t\" Encoding\": \" %S\"" ,
need_sep ? ",\n" : "" ,
encoding_desc);
need_sep = true ;
}
fprintf(fp, "%s}" , need_sep ? "\n" : "" );
strbuf_release(&buf);
}
static void json_print_metric(void *ps __maybe_unused, const char *group,
const char *name, const char *desc,
const char *long_desc, const char *expr,
const char *threshold, const char *unit,
const char *pmu_name)
{
struct json_print_state *print_state = ps;
bool need_sep = false ;
FILE *fp = print_state->fp;
struct strbuf buf;
strbuf_init(&buf, 0);
fprintf(fp, "%s{\n" , print_state->need_sep ? ",\n" : "" );
print_state->need_sep = true ;
if (group) {
fix_escape_fprintf(fp, &buf, "\t\" MetricGroup\": \" %S\"" , group);
need_sep = true ;
}
if (name) {
fix_escape_fprintf(fp, &buf, "%s\t\" MetricName\": \" %S\"" ,
need_sep ? ",\n" : "" ,
name);
need_sep = true ;
}
if (expr) {
fix_escape_fprintf(fp, &buf, "%s\t\" MetricExpr\": \" %S\"" ,
need_sep ? ",\n" : "" ,
expr);
need_sep = true ;
}
if (threshold) {
fix_escape_fprintf(fp, &buf, "%s\t\" MetricThreshold\": \" %S\"" ,
need_sep ? ",\n" : "" ,
threshold);
need_sep = true ;
}
if (unit) {
fix_escape_fprintf(fp, &buf, "%s\t\" ScaleUnit\": \" %S\"" ,
need_sep ? ",\n" : "" ,
unit);
need_sep = true ;
}
if (desc) {
fix_escape_fprintf(fp, &buf, "%s\t\" BriefDescription\": \" %S\"" ,
need_sep ? ",\n" : "" ,
desc);
need_sep = true ;
}
if (long_desc) {
fix_escape_fprintf(fp, &buf, "%s\t\" PublicDescription\": \" %S\"" ,
need_sep ? ",\n" : "" ,
long_desc);
need_sep = true ;
}
if (pmu_name) {
fix_escape_fprintf(fp, &buf, "%s\t\" Unit\": \" %S\"" ,
need_sep ? ",\n" : "" ,
pmu_name);
need_sep = true ;
}
fprintf(fp, "%s}" , need_sep ? "\n" : "" );
strbuf_release(&buf);
}
static bool json_skip_duplicate_pmus(void *ps __maybe_unused)
{
return false ;
}
static bool default_skip_duplicate_pmus(void *ps)
{
struct print_state *print_state = ps;
return !print_state->long_desc;
}
int cmd_list(int argc, const char **argv)
{
int i, ret = 0;
struct print_state default_ps = {
.fp = stdout,
.desc = true ,
};
struct print_state json_ps = {
.fp = stdout,
};
void *ps = &default_ps;
struct print_callbacks print_cb = {
.print_start = default_print_start,
.print_end = default_print_end,
.print_event = default_print_event,
.print_metric = default_print_metric,
.skip_duplicate_pmus = default_skip_duplicate_pmus,
};
const char *cputype = NULL;
const char *unit_name = NULL;
const char *output_path = NULL;
bool json = false ;
struct option list_options[] = {
OPT_BOOLEAN(0, "raw-dump" , &default_ps.name_only, "Dump raw events" ),
OPT_BOOLEAN('j' , "json" , &json, "JSON encode events and metrics" ),
OPT_BOOLEAN('d' , "desc" , &default_ps.desc,
"Print extra event descriptions. --no-desc to not print." ),
OPT_BOOLEAN('v' , "long-desc" , &default_ps.long_desc,
"Print longer event descriptions and all similar PMUs with alphanumeric suffixes." ),
OPT_BOOLEAN(0, "details" , &default_ps.detailed,
"Print information on the perf event names and expressions used internally by events." ),
OPT_STRING('o' , "output" , &output_path, "file" , "output file name" ),
OPT_BOOLEAN(0, "deprecated" , &default_ps.deprecated,
"Print deprecated events." ),
OPT_STRING(0, "cputype" , &cputype, "cpu type" ,
"Limit PMU or metric printing to the given PMU (e.g. cpu, core or atom)." ),
OPT_STRING(0, "unit" , &unit_name, "PMU name" ,
"Limit PMU or metric printing to the specified PMU." ),
OPT_INCR(0, "debug" , &verbose,
"Enable debugging output" ),
OPT_END()
};
const char * const list_usage[] = {
#ifdef HAVE_LIBPFM
"perf list [] [hw|sw|cache|tracepoint|pmu|sdt|metric|metricgroup|event_glob|pfm]" ,
#else
"perf list [] [hw|sw|cache|tracepoint|pmu|sdt|metric|metricgroup|event_glob]" ,
#endif
NULL
};
set_option_flag(list_options, 0, "raw-dump" , PARSE_OPT_HIDDEN);
/* Hide hybrid flag for the more generic 'unit' flag. */
set_option_flag(list_options, 0, "cputype" , PARSE_OPT_HIDDEN);
argc = parse_options(argc, argv, list_options, list_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (output_path) {
default_ps.fp = fopen(output_path, "w" );
json_ps.fp = default_ps.fp;
}
setup_pager();
if (!default_ps.name_only)
setup_pager();
if (json) {
print_cb = (struct print_callbacks){
.print_start = json_print_start,
.print_end = json_print_end,
.print_event = json_print_event,
.print_metric = json_print_metric,
.skip_duplicate_pmus = json_skip_duplicate_pmus,
};
ps = &json_ps;
} else {
default_ps.last_topic = strdup("" );
assert(default_ps.last_topic);
default_ps.visited_metrics = strlist__new(NULL, NULL);
assert(default_ps.visited_metrics);
if (unit_name)
default_ps.pmu_glob = strdup(unit_name);
else if (cputype) {
const struct perf_pmu *pmu = perf_pmus__pmu_for_pmu_filter(cputype);
if (!pmu) {
pr_err("ERROR: cputype is not supported!\n" );
ret = -1;
goto out;
}
default_ps.pmu_glob = strdup(pmu->name);
}
}
print_cb.print_start(ps);
if (argc == 0) {
default_ps.metrics = true ;
default_ps.metricgroups = true ;
print_events(&print_cb, ps);
goto out;
}
for (i = 0; i < argc; ++i) {
char *sep, *s;
if (strcmp(argv[i], "tracepoint" ) == 0) {
char *old_pmu_glob = default_ps.pmu_glob;
default_ps.pmu_glob = strdup("tracepoint" );
if (!default_ps.pmu_glob) {
ret = -1;
goto out;
}
perf_pmus__print_pmu_events(&print_cb, ps);
zfree(&default_ps.pmu_glob);
default_ps.pmu_glob = old_pmu_glob;
} else if (strcmp(argv[i], "hw" ) == 0 ||
strcmp(argv[i], "hardware" ) == 0)
print_symbol_events(&print_cb, ps, PERF_TYPE_HARDWARE,
event_symbols_hw, PERF_COUNT_HW_MAX);
else if (strcmp(argv[i], "sw" ) == 0 ||
strcmp(argv[i], "software" ) == 0) {
char *old_pmu_glob = default_ps.pmu_glob;
static const char * const sw_globs[] = { "software" , "tool" };
for (size_t j = 0; j < ARRAY_SIZE(sw_globs); j++) {
default_ps.pmu_glob = strdup(sw_globs[j]);
if (!default_ps.pmu_glob) {
ret = -1;
goto out;
}
perf_pmus__print_pmu_events(&print_cb, ps);
zfree(&default_ps.pmu_glob);
}
default_ps.pmu_glob = old_pmu_glob;
} else if (strcmp(argv[i], "cache" ) == 0 ||
strcmp(argv[i], "hwcache" ) == 0)
print_hwcache_events(&print_cb, ps);
else if (strcmp(argv[i], "pmu" ) == 0) {
default_ps.exclude_abi = true ;
perf_pmus__print_pmu_events(&print_cb, ps);
default_ps.exclude_abi = false ;
} else if (strcmp(argv[i], "sdt" ) == 0)
print_sdt_events(&print_cb, ps);
else if (strcmp(argv[i], "metric" ) == 0 || strcmp(argv[i], "metrics" ) == 0) {
default_ps.metricgroups = false ;
default_ps.metrics = true ;
metricgroup__print(&print_cb, ps);
} else if (strcmp(argv[i], "metricgroup" ) == 0 ||
strcmp(argv[i], "metricgroups" ) == 0) {
default_ps.metricgroups = true ;
default_ps.metrics = false ;
metricgroup__print(&print_cb, ps);
}
#ifdef HAVE_LIBPFM
else if (strcmp(argv[i], "pfm" ) == 0)
print_libpfm_events(&print_cb, ps);
#endif
else if ((sep = strchr(argv[i], ':' )) != NULL) {
char *old_pmu_glob = default_ps.pmu_glob;
char *old_event_glob = default_ps.event_glob;
default_ps.event_glob = strdup(argv[i]);
if (!default_ps.event_glob) {
ret = -1;
goto out;
}
default_ps.pmu_glob = strdup("tracepoint" );
if (!default_ps.pmu_glob) {
zfree(&default_ps.event_glob);
ret = -1;
goto out;
}
perf_pmus__print_pmu_events(&print_cb, ps);
zfree(&default_ps.pmu_glob);
default_ps.pmu_glob = old_pmu_glob;
print_sdt_events(&print_cb, ps);
default_ps.metrics = true ;
default_ps.metricgroups = true ;
metricgroup__print(&print_cb, ps);
zfree(&default_ps.event_glob);
default_ps.event_glob = old_event_glob;
} else {
if (asprintf(&s, "*%s*" , argv[i]) < 0) {
printf("Critical: Not enough memory! Trying to continue...\n" );
continue ;
}
default_ps.event_glob = s;
print_symbol_events(&print_cb, ps, PERF_TYPE_HARDWARE,
event_symbols_hw, PERF_COUNT_HW_MAX);
print_hwcache_events(&print_cb, ps);
perf_pmus__print_pmu_events(&print_cb, ps);
print_sdt_events(&print_cb, ps);
default_ps.metrics = true ;
default_ps.metricgroups = true ;
metricgroup__print(&print_cb, ps);
free(s);
}
}
out:
print_cb.print_end(ps);
free(default_ps.pmu_glob);
free(default_ps.last_topic);
free(default_ps.last_metricgroups);
strlist__delete(default_ps.visited_metrics);
if (output_path)
fclose(default_ps.fp);
return ret;
}
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