From b22da3d8526a935aa31e086e63f60ff3246cb61c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 07:24:11 +0000
Subject: [PATCH] add stmac read mac form eeprom
---
kernel/tools/perf/util/pmu.c | 467 ++++++++++++++++++++++++++++++++++++++++++---------------
1 files changed, 341 insertions(+), 126 deletions(-)
diff --git a/kernel/tools/perf/util/pmu.c b/kernel/tools/perf/util/pmu.c
index c42054f..ac45da0 100644
--- a/kernel/tools/perf/util/pmu.c
+++ b/kernel/tools/perf/util/pmu.c
@@ -1,6 +1,9 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/list.h>
#include <linux/compiler.h>
+#include <linux/string.h>
+#include <linux/zalloc.h>
+#include <subcmd/pager.h>
#include <sys/types.h>
#include <errno.h>
#include <fcntl.h>
@@ -13,14 +16,17 @@
#include <api/fs/fs.h>
#include <locale.h>
#include <regex.h>
-#include "util.h"
+#include <perf/cpumap.h>
+#include "debug.h"
+#include "evsel.h"
#include "pmu.h"
#include "parse-events.h"
-#include "cpumap.h"
#include "header.h"
-#include "pmu-events/pmu-events.h"
-#include "cache.h"
#include "string2.h"
+#include "strbuf.h"
+#include "fncache.h"
+
+struct perf_pmu perf_pmu__fake;
struct perf_pmu_format {
char *name;
@@ -28,8 +34,6 @@
DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS);
struct list_head list;
};
-
-#define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/"
int perf_pmu_parse(struct list_head *list, char *name);
extern FILE *perf_pmu_in;
@@ -81,7 +85,6 @@
*/
static int pmu_format(const char *name, struct list_head *format)
{
- struct stat st;
char path[PATH_MAX];
const char *sysfs = sysfs__mountpoint();
@@ -91,8 +94,8 @@
snprintf(path, PATH_MAX,
"%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name);
- if (stat(path, &st) < 0)
- return 0; /* no error if format does not exist */
+ if (!file_available(path))
+ return 0;
if (perf_pmu__format_parse(path, format))
return -1;
@@ -100,7 +103,7 @@
return 0;
}
-static int convert_scale(const char *scale, char **end, double *sval)
+int perf_pmu__convert_scale(const char *scale, char **end, double *sval)
{
char *lc;
int ret = 0;
@@ -163,7 +166,7 @@
else
scale[sret] = '\0';
- ret = convert_scale(scale, NULL, &alias->scale);
+ ret = perf_pmu__convert_scale(scale, NULL, &alias->scale);
error:
close(fd);
return ret;
@@ -271,7 +274,7 @@
}
/* Delete an alias entry. */
-static void perf_pmu_free_alias(struct perf_pmu_alias *newalias)
+void perf_pmu_free_alias(struct perf_pmu_alias *newalias)
{
zfree(&newalias->name);
zfree(&newalias->desc);
@@ -307,7 +310,8 @@
char *long_desc, char *topic,
char *unit, char *perpkg,
char *metric_expr,
- char *metric_name)
+ char *metric_name,
+ char *deprecated)
{
struct parse_events_term *term;
struct perf_pmu_alias *alias;
@@ -324,6 +328,7 @@
alias->unit[0] = '\0';
alias->per_pkg = false;
alias->snapshot = false;
+ alias->deprecated = false;
ret = parse_events_terms(&alias->terms, val);
if (ret) {
@@ -371,12 +376,15 @@
desc ? strdup(desc) : NULL;
alias->topic = topic ? strdup(topic) : NULL;
if (unit) {
- if (convert_scale(unit, &unit, &alias->scale) < 0)
+ if (perf_pmu__convert_scale(unit, &unit, &alias->scale) < 0)
return -1;
snprintf(alias->unit, sizeof(alias->unit), "%s", unit);
}
alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1;
alias->str = strdup(newval);
+
+ if (deprecated)
+ alias->deprecated = true;
if (!perf_pmu_merge_alias(alias, list))
list_add_tail(&alias->list, list);
@@ -396,10 +404,10 @@
buf[ret] = 0;
/* Remove trailing newline from sysfs file */
- rtrim(buf);
+ strim(buf);
return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL,
- NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL);
}
static inline bool pmu_alias_info_file(char *name)
@@ -469,7 +477,6 @@
*/
static int pmu_aliases(const char *name, struct list_head *head)
{
- struct stat st;
char path[PATH_MAX];
const char *sysfs = sysfs__mountpoint();
@@ -479,8 +486,8 @@
snprintf(path, PATH_MAX,
"%s/bus/event_source/devices/%s/events", sysfs, name);
- if (stat(path, &st) < 0)
- return 0; /* no error if 'events' does not exist */
+ if (!file_available(path))
+ return 0;
if (pmu_aliases_parse(path, head))
return -1;
@@ -519,7 +526,6 @@
*/
static int pmu_type(const char *name, __u32 *type)
{
- struct stat st;
char path[PATH_MAX];
FILE *file;
int ret = 0;
@@ -531,7 +537,7 @@
snprintf(path, PATH_MAX,
"%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name);
- if (stat(path, &st) < 0)
+ if (access(path, R_OK) < 0)
return -1;
file = fopen(path, "r");
@@ -573,16 +579,16 @@
closedir(dir);
}
-static struct cpu_map *__pmu_cpumask(const char *path)
+static struct perf_cpu_map *__pmu_cpumask(const char *path)
{
FILE *file;
- struct cpu_map *cpus;
+ struct perf_cpu_map *cpus;
file = fopen(path, "r");
if (!file)
return NULL;
- cpus = cpu_map__read(file);
+ cpus = perf_cpu_map__read(file);
fclose(file);
return cpus;
}
@@ -594,10 +600,10 @@
#define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask"
#define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus"
-static struct cpu_map *pmu_cpumask(const char *name)
+static struct perf_cpu_map *pmu_cpumask(const char *name)
{
char path[PATH_MAX];
- struct cpu_map *cpus;
+ struct perf_cpu_map *cpus;
const char *sysfs = sysfs__mountpoint();
const char *templates[] = {
CPUS_TEMPLATE_UNCORE,
@@ -622,14 +628,11 @@
static bool pmu_is_uncore(const char *name)
{
char path[PATH_MAX];
- struct cpu_map *cpus;
- const char *sysfs = sysfs__mountpoint();
+ const char *sysfs;
+ sysfs = sysfs__mountpoint();
snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name);
- cpus = __pmu_cpumask(path);
- cpu_map__put(cpus);
-
- return !!cpus;
+ return file_available(path);
}
/*
@@ -639,7 +642,6 @@
*/
static int is_arm_pmu_core(const char *name)
{
- struct stat st;
char path[PATH_MAX];
const char *sysfs = sysfs__mountpoint();
@@ -649,49 +651,7 @@
/* Look for cpu sysfs (specific to arm) */
scnprintf(path, PATH_MAX, "%s/bus/event_source/devices/%s/cpus",
sysfs, name);
- if (stat(path, &st) == 0)
- return 1;
-
- return 0;
-}
-
-/*
- * Return the CPU id as a raw string.
- *
- * Each architecture should provide a more precise id string that
- * can be use to match the architecture's "mapfile".
- */
-char * __weak get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
-{
- return NULL;
-}
-
-/* Return zero when the cpuid from the mapfile.csv matches the
- * cpuid string generated on this platform.
- * Otherwise return non-zero.
- */
-int strcmp_cpuid_str(const char *mapcpuid, const char *cpuid)
-{
- regex_t re;
- regmatch_t pmatch[1];
- int match;
-
- if (regcomp(&re, mapcpuid, REG_EXTENDED) != 0) {
- /* Warn unable to generate match particular string. */
- pr_info("Invalid regular expression %s\n", mapcpuid);
- return 1;
- }
-
- match = !regexec(&re, cpuid, 1, pmatch, 0);
- regfree(&re);
- if (match) {
- size_t match_len = (pmatch[0].rm_eo - pmatch[0].rm_so);
-
- /* Verify the entire string matched. */
- if (match_len == strlen(cpuid))
- return 0;
- }
- return 1;
+ return file_available(path);
}
static char *perf_pmu__getcpuid(struct perf_pmu *pmu)
@@ -741,21 +701,56 @@
return map;
}
+bool pmu_uncore_alias_match(const char *pmu_name, const char *name)
+{
+ char *tmp = NULL, *tok, *str;
+ bool res;
+
+ str = strdup(pmu_name);
+ if (!str)
+ return false;
+
+ /*
+ * uncore alias may be from different PMU with common prefix
+ */
+ tok = strtok_r(str, ",", &tmp);
+ if (strncmp(pmu_name, tok, strlen(tok))) {
+ res = false;
+ goto out;
+ }
+
+ /*
+ * Match more complex aliases where the alias name is a comma-delimited
+ * list of tokens, orderly contained in the matching PMU name.
+ *
+ * Example: For alias "socket,pmuname" and PMU "socketX_pmunameY", we
+ * match "socket" in "socketX_pmunameY" and then "pmuname" in
+ * "pmunameY".
+ */
+ for (; tok; name += strlen(tok), tok = strtok_r(NULL, ",", &tmp)) {
+ name = strstr(name, tok);
+ if (!name) {
+ res = false;
+ goto out;
+ }
+ }
+
+ res = true;
+out:
+ free(str);
+ return res;
+}
+
/*
* From the pmu_events_map, find the table of PMU events that corresponds
* to the current running CPU. Then, add all PMU events from that table
* as aliases.
*/
-static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu)
+void pmu_add_cpu_aliases_map(struct list_head *head, struct perf_pmu *pmu,
+ struct pmu_events_map *map)
{
int i;
- struct pmu_events_map *map;
const char *name = pmu->name;
-
- map = perf_pmu__find_map(pmu);
- if (!map)
- return;
-
/*
* Found a matching PMU events table. Create aliases
*/
@@ -771,12 +766,8 @@
break;
}
- /*
- * uncore alias may be from different PMU
- * with common prefix
- */
if (pmu_is_uncore(name) &&
- !strncmp(pname, name, strlen(pname)))
+ pmu_uncore_alias_match(pname, name))
goto new_alias;
if (strcmp(pname, name))
@@ -789,14 +780,39 @@
(char *)pe->long_desc, (char *)pe->topic,
(char *)pe->unit, (char *)pe->perpkg,
(char *)pe->metric_expr,
- (char *)pe->metric_name);
+ (char *)pe->metric_name,
+ (char *)pe->deprecated);
}
+}
+
+static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu)
+{
+ struct pmu_events_map *map;
+
+ map = perf_pmu__find_map(pmu);
+ if (!map)
+ return;
+
+ pmu_add_cpu_aliases_map(head, pmu, map);
}
struct perf_event_attr * __weak
perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused)
{
return NULL;
+}
+
+static int pmu_max_precise(const char *name)
+{
+ char path[PATH_MAX];
+ int max_precise = -1;
+
+ scnprintf(path, PATH_MAX,
+ "bus/event_source/devices/%s/caps/max_precise",
+ name);
+
+ sysfs__read_int(path, &max_precise);
+ return max_precise;
}
static struct perf_pmu *pmu_lookup(const char *name)
@@ -831,10 +847,12 @@
pmu->name = strdup(name);
pmu->type = type;
pmu->is_uncore = pmu_is_uncore(name);
+ pmu->max_precise = pmu_max_precise(name);
pmu_add_cpu_aliases(&aliases, pmu);
INIT_LIST_HEAD(&pmu->format);
INIT_LIST_HEAD(&pmu->aliases);
+ INIT_LIST_HEAD(&pmu->caps);
list_splice(&format, &pmu->format);
list_splice(&aliases, &pmu->aliases);
list_add_tail(&pmu->list, &pmus);
@@ -844,12 +862,40 @@
return pmu;
}
+void perf_pmu__warn_invalid_formats(struct perf_pmu *pmu)
+{
+ struct perf_pmu_format *format;
+
+ /* fake pmu doesn't have format list */
+ if (pmu == &perf_pmu__fake)
+ return;
+
+ list_for_each_entry(format, &pmu->format, list)
+ if (format->value >= PERF_PMU_FORMAT_VALUE_CONFIG_END) {
+ pr_warning("WARNING: '%s' format '%s' requires 'perf_event_attr::config%d'"
+ "which is not supported by this version of perf!\n",
+ pmu->name, format->name, format->value);
+ return;
+ }
+}
+
static struct perf_pmu *pmu_find(const char *name)
{
struct perf_pmu *pmu;
list_for_each_entry(pmu, &pmus, list)
if (!strcmp(pmu->name, name))
+ return pmu;
+
+ return NULL;
+}
+
+struct perf_pmu *perf_pmu__find_by_type(unsigned int type)
+{
+ struct perf_pmu *pmu;
+
+ list_for_each_entry(pmu, &pmus, list)
+ if (pmu->type == type)
return pmu;
return NULL;
@@ -868,6 +914,25 @@
list_for_each_entry_continue(pmu, &pmus, list)
return pmu;
return NULL;
+}
+
+struct perf_pmu *evsel__find_pmu(struct evsel *evsel)
+{
+ struct perf_pmu *pmu = NULL;
+
+ while ((pmu = perf_pmu__scan(pmu)) != NULL) {
+ if (pmu->type == evsel->core.attr.type)
+ break;
+ }
+
+ return pmu;
+}
+
+bool evsel__is_aux_event(struct evsel *evsel)
+{
+ struct perf_pmu *pmu = evsel__find_pmu(evsel);
+
+ return pmu && pmu->auxtrace;
}
struct perf_pmu *perf_pmu__find(const char *name)
@@ -911,6 +976,16 @@
bits |= 1ULL << fbit;
return bits;
+}
+
+int perf_pmu__format_type(struct list_head *formats, const char *name)
+{
+ struct perf_pmu_format *format = pmu_find_format(formats, name);
+
+ if (!format)
+ return -1;
+
+ return format->value;
}
/*
@@ -960,12 +1035,11 @@
struct parse_events_term *t;
list_for_each_entry(t, head_terms, list) {
- if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) {
- if (!strcmp(t->config, term->config)) {
- t->used = true;
- *value = t->val.num;
- return 0;
- }
+ if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM &&
+ t->config && !strcmp(t->config, term->config)) {
+ t->used = true;
+ *value = t->val.num;
+ return 0;
}
}
@@ -1001,7 +1075,8 @@
* Setup one of config[12] attr members based on the
* user input data - term parameter.
*/
-static int pmu_config_term(struct list_head *formats,
+static int pmu_config_term(const char *pmu_name,
+ struct list_head *formats,
struct perf_event_attr *attr,
struct parse_events_term *term,
struct list_head *head_terms,
@@ -1027,16 +1102,24 @@
format = pmu_find_format(formats, term->config);
if (!format) {
- if (verbose > 0)
- printf("Invalid event/parameter '%s'\n", term->config);
- if (err) {
- char *pmu_term = pmu_formats_string(formats);
+ char *pmu_term = pmu_formats_string(formats);
+ char *unknown_term;
+ char *help_msg;
- err->idx = term->err_term;
- err->str = strdup("unknown term");
- err->help = parse_events_formats_error_string(pmu_term);
- free(pmu_term);
+ if (asprintf(&unknown_term,
+ "unknown term '%s' for pmu '%s'",
+ term->config, pmu_name) < 0)
+ unknown_term = NULL;
+ help_msg = parse_events_formats_error_string(pmu_term);
+ if (err) {
+ parse_events__handle_error(err, term->err_term,
+ unknown_term,
+ help_msg);
+ } else {
+ pr_debug("%s (%s)\n", unknown_term, help_msg);
+ free(unknown_term);
}
+ free(pmu_term);
return -EINVAL;
}
@@ -1062,8 +1145,9 @@
if (term->no_value &&
bitmap_weight(format->bits, PERF_PMU_FORMAT_BITS) > 1) {
if (err) {
- err->idx = term->err_val;
- err->str = strdup("no value assigned for term");
+ parse_events__handle_error(err, term->err_val,
+ strdup("no value assigned for term"),
+ NULL);
}
return -EINVAL;
}
@@ -1076,8 +1160,9 @@
term->config, term->val.str);
}
if (err) {
- err->idx = term->err_val;
- err->str = strdup("expected numeric value");
+ parse_events__handle_error(err, term->err_val,
+ strdup("expected numeric value"),
+ NULL);
}
return -EINVAL;
}
@@ -1090,11 +1175,15 @@
max_val = pmu_format_max_value(format->bits);
if (val > max_val) {
if (err) {
- err->idx = term->err_val;
- if (asprintf(&err->str,
- "value too big for format, maximum is %llu",
- (unsigned long long)max_val) < 0)
- err->str = strdup("value too big for format");
+ char *err_str;
+
+ parse_events__handle_error(err, term->err_val,
+ asprintf(&err_str,
+ "value too big for format, maximum is %llu",
+ (unsigned long long)max_val) < 0
+ ? strdup("value too big for format")
+ : err_str,
+ NULL);
return -EINVAL;
}
/*
@@ -1107,7 +1196,7 @@
return 0;
}
-int perf_pmu__config_terms(struct list_head *formats,
+int perf_pmu__config_terms(const char *pmu_name, struct list_head *formats,
struct perf_event_attr *attr,
struct list_head *head_terms,
bool zero, struct parse_events_error *err)
@@ -1115,7 +1204,7 @@
struct parse_events_term *term;
list_for_each_entry(term, head_terms, list) {
- if (pmu_config_term(formats, attr, term, head_terms,
+ if (pmu_config_term(pmu_name, formats, attr, term, head_terms,
zero, err))
return -EINVAL;
}
@@ -1135,8 +1224,8 @@
bool zero = !!pmu->default_config;
attr->type = pmu->type;
- return perf_pmu__config_terms(&pmu->format, attr, head_terms,
- zero, err);
+ return perf_pmu__config_terms(pmu->name, &pmu->format, attr,
+ head_terms, zero, err);
}
static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu,
@@ -1235,8 +1324,8 @@
info->metric_expr = alias->metric_expr;
info->metric_name = alias->metric_name;
- list_del(&term->list);
- free(term);
+ list_del_init(&term->list);
+ parse_events_term__delete(term);
}
/*
@@ -1341,6 +1430,7 @@
char *pmu;
char *metric_expr;
char *metric_name;
+ int is_cpu;
};
static int cmp_sevent(const void *a, const void *b)
@@ -1357,6 +1447,11 @@
if (n)
return n;
}
+
+ /* Order CPU core events to be first */
+ if (as->is_cpu != bs->is_cpu)
+ return bs->is_cpu - as->is_cpu;
+
return strcmp(as->name, bs->name);
}
@@ -1377,12 +1472,17 @@
break;
s += wlen;
column += n;
- s = ltrim(s);
+ s = skip_spaces(s);
}
}
+bool is_pmu_core(const char *name)
+{
+ return !strcmp(name, "cpu") || is_arm_pmu_core(name);
+}
+
void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
- bool long_desc, bool details_flag)
+ bool long_desc, bool details_flag, bool deprecated)
{
struct perf_pmu *pmu;
struct perf_pmu_alias *alias;
@@ -1411,7 +1511,10 @@
list_for_each_entry(alias, &pmu->aliases, list) {
char *name = alias->desc ? alias->name :
format_alias(buf, sizeof(buf), pmu, alias);
- bool is_cpu = !strcmp(pmu->name, "cpu");
+ bool is_cpu = is_pmu_core(pmu->name);
+
+ if (alias->deprecated && !deprecated)
+ continue;
if (event_glob != NULL &&
!(strglobmatch_nocase(name, event_glob) ||
@@ -1440,6 +1543,7 @@
aliases[j].pmu = pmu->name;
aliases[j].metric_expr = alias->metric_expr;
aliases[j].metric_name = alias->metric_name;
+ aliases[j].is_cpu = is_cpu;
j++;
}
if (pmu->selectable &&
@@ -1518,7 +1622,6 @@
static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name)
{
- struct stat st;
char path[PATH_MAX];
const char *sysfs;
@@ -1528,10 +1631,8 @@
snprintf(path, PATH_MAX,
"%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name);
-
- if (stat(path, &st) < 0)
+ if (!file_available(path))
return NULL;
-
return fopen(path, "r");
}
@@ -1551,3 +1652,117 @@
va_end(args);
return ret;
}
+
+static int perf_pmu__new_caps(struct list_head *list, char *name, char *value)
+{
+ struct perf_pmu_caps *caps = zalloc(sizeof(*caps));
+
+ if (!caps)
+ return -ENOMEM;
+
+ caps->name = strdup(name);
+ if (!caps->name)
+ goto free_caps;
+ caps->value = strndup(value, strlen(value) - 1);
+ if (!caps->value)
+ goto free_name;
+ list_add_tail(&caps->list, list);
+ return 0;
+
+free_name:
+ zfree(caps->name);
+free_caps:
+ free(caps);
+
+ return -ENOMEM;
+}
+
+/*
+ * Reading/parsing the given pmu capabilities, which should be located at:
+ * /sys/bus/event_source/devices/<dev>/caps as sysfs group attributes.
+ * Return the number of capabilities
+ */
+int perf_pmu__caps_parse(struct perf_pmu *pmu)
+{
+ struct stat st;
+ char caps_path[PATH_MAX];
+ const char *sysfs = sysfs__mountpoint();
+ DIR *caps_dir;
+ struct dirent *evt_ent;
+ int nr_caps = 0;
+
+ if (!sysfs)
+ return -1;
+
+ snprintf(caps_path, PATH_MAX,
+ "%s" EVENT_SOURCE_DEVICE_PATH "%s/caps", sysfs, pmu->name);
+
+ if (stat(caps_path, &st) < 0)
+ return 0; /* no error if caps does not exist */
+
+ caps_dir = opendir(caps_path);
+ if (!caps_dir)
+ return -EINVAL;
+
+ while ((evt_ent = readdir(caps_dir)) != NULL) {
+ char path[PATH_MAX + NAME_MAX + 1];
+ char *name = evt_ent->d_name;
+ char value[128];
+ FILE *file;
+
+ if (!strcmp(name, ".") || !strcmp(name, ".."))
+ continue;
+
+ snprintf(path, sizeof(path), "%s/%s", caps_path, name);
+
+ file = fopen(path, "r");
+ if (!file)
+ continue;
+
+ if (!fgets(value, sizeof(value), file) ||
+ (perf_pmu__new_caps(&pmu->caps, name, value) < 0)) {
+ fclose(file);
+ continue;
+ }
+
+ nr_caps++;
+ fclose(file);
+ }
+
+ closedir(caps_dir);
+
+ return nr_caps;
+}
+
+void perf_pmu__warn_invalid_config(struct perf_pmu *pmu, __u64 config,
+ char *name)
+{
+ struct perf_pmu_format *format;
+ __u64 masks = 0, bits;
+ char buf[100];
+ unsigned int i;
+
+ list_for_each_entry(format, &pmu->format, list) {
+ if (format->value != PERF_PMU_FORMAT_VALUE_CONFIG)
+ continue;
+
+ for_each_set_bit(i, format->bits, PERF_PMU_FORMAT_BITS)
+ masks |= 1ULL << i;
+ }
+
+ /*
+ * Kernel doesn't export any valid format bits.
+ */
+ if (masks == 0)
+ return;
+
+ bits = config & ~masks;
+ if (bits == 0)
+ return;
+
+ bitmap_scnprintf((unsigned long *)&bits, sizeof(bits) * 8, buf, sizeof(buf));
+
+ pr_warning("WARNING: event '%s' not valid (bits %s of config "
+ "'%llx' not supported by kernel)!\n",
+ name ?: "N/A", buf, config);
+}
--
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