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-rw-r--r--tools/perf/util/evsel.c156
1 files changed, 83 insertions, 73 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index f3e60c45d59a..96e5171dce41 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -56,14 +56,14 @@ struct perf_missing_features perf_missing_features;
static clockid_t clockid;
-static int perf_evsel__no_extra_init(struct evsel *evsel __maybe_unused)
+static int evsel__no_extra_init(struct evsel *evsel __maybe_unused)
{
return 0;
}
void __weak test_attr__ready(void) { }
-static void perf_evsel__no_extra_fini(struct evsel *evsel __maybe_unused)
+static void evsel__no_extra_fini(struct evsel *evsel __maybe_unused)
{
}
@@ -73,13 +73,12 @@ static struct {
void (*fini)(struct evsel *evsel);
} perf_evsel__object = {
.size = sizeof(struct evsel),
- .init = perf_evsel__no_extra_init,
- .fini = perf_evsel__no_extra_fini,
+ .init = evsel__no_extra_init,
+ .fini = evsel__no_extra_fini,
};
-int perf_evsel__object_config(size_t object_size,
- int (*init)(struct evsel *evsel),
- void (*fini)(struct evsel *evsel))
+int evsel__object_config(size_t object_size, int (*init)(struct evsel *evsel),
+ void (*fini)(struct evsel *evsel))
{
if (object_size == 0)
@@ -255,11 +254,12 @@ void evsel__init(struct evsel *evsel,
evsel->metric_expr = NULL;
evsel->metric_name = NULL;
evsel->metric_events = NULL;
+ evsel->per_pkg_mask = NULL;
evsel->collect_stat = false;
evsel->pmu_name = NULL;
}
-struct evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx)
+struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx)
{
struct evsel *evsel = zalloc(perf_evsel__object.size);
@@ -292,7 +292,7 @@ static bool perf_event_can_profile_kernel(void)
return perf_event_paranoid_check(1);
}
-struct evsel *perf_evsel__new_cycles(bool precise)
+struct evsel *evsel__new_cycles(bool precise)
{
struct perf_event_attr attr = {
.type = PERF_TYPE_HARDWARE,
@@ -334,7 +334,7 @@ error_free:
/*
* Returns pointer with encoded error via <linux/err.h> interface.
*/
-struct evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx)
+struct evsel *evsel__newtp_idx(const char *sys, const char *name, int idx)
{
struct evsel *evsel = zalloc(perf_evsel__object.size);
int err = -ENOMEM;
@@ -372,7 +372,7 @@ out_err:
return ERR_PTR(err);
}
-const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = {
+const char *evsel__hw_names[PERF_COUNT_HW_MAX] = {
"cycles",
"instructions",
"cache-references",
@@ -387,8 +387,8 @@ const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = {
static const char *__evsel__hw_name(u64 config)
{
- if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config])
- return perf_evsel__hw_names[config];
+ if (config < PERF_COUNT_HW_MAX && evsel__hw_names[config])
+ return evsel__hw_names[config];
return "unknown-hardware";
}
@@ -435,7 +435,7 @@ static int evsel__hw_name(struct evsel *evsel, char *bf, size_t size)
return r + perf_evsel__add_modifiers(evsel, bf + r, size - r);
}
-const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = {
+const char *evsel__sw_names[PERF_COUNT_SW_MAX] = {
"cpu-clock",
"task-clock",
"page-faults",
@@ -450,8 +450,8 @@ const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = {
static const char *__evsel__sw_name(u64 config)
{
- if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config])
- return perf_evsel__sw_names[config];
+ if (config < PERF_COUNT_SW_MAX && evsel__sw_names[config])
+ return evsel__sw_names[config];
return "unknown-software";
}
@@ -486,8 +486,7 @@ static int evsel__bp_name(struct evsel *evsel, char *bf, size_t size)
return r + perf_evsel__add_modifiers(evsel, bf + r, size - r);
}
-const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
- [PERF_EVSEL__MAX_ALIASES] = {
+const char *evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX][EVSEL__MAX_ALIASES] = {
{ "L1-dcache", "l1-d", "l1d", "L1-data", },
{ "L1-icache", "l1-i", "l1i", "L1-instruction", },
{ "LLC", "L2", },
@@ -497,15 +496,13 @@ const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
{ "node", },
};
-const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
- [PERF_EVSEL__MAX_ALIASES] = {
+const char *evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][EVSEL__MAX_ALIASES] = {
{ "load", "loads", "read", },
{ "store", "stores", "write", },
{ "prefetch", "prefetches", "speculative-read", "speculative-load", },
};
-const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
- [PERF_EVSEL__MAX_ALIASES] = {
+const char *evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX][EVSEL__MAX_ALIASES] = {
{ "refs", "Reference", "ops", "access", },
{ "misses", "miss", },
};
@@ -521,7 +518,7 @@ const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
* L1I : Read and prefetch only
* ITLB and BPU : Read-only
*/
-static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = {
+static unsigned long evsel__hw_cache_stat[C(MAX)] = {
[C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
[C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
[C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
@@ -533,7 +530,7 @@ static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = {
bool evsel__is_cache_op_valid(u8 type, u8 op)
{
- if (perf_evsel__hw_cache_stat[type] & COP(op))
+ if (evsel__hw_cache_stat[type] & COP(op))
return true; /* valid */
else
return false; /* invalid */
@@ -542,13 +539,13 @@ bool evsel__is_cache_op_valid(u8 type, u8 op)
int __evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, char *bf, size_t size)
{
if (result) {
- return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0],
- perf_evsel__hw_cache_op[op][0],
- perf_evsel__hw_cache_result[result][0]);
+ return scnprintf(bf, size, "%s-%s-%s", evsel__hw_cache[type][0],
+ evsel__hw_cache_op[op][0],
+ evsel__hw_cache_result[result][0]);
}
- return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0],
- perf_evsel__hw_cache_op[op][1]);
+ return scnprintf(bf, size, "%s-%s", evsel__hw_cache[type][0],
+ evsel__hw_cache_op[op][1]);
}
static int __evsel__hw_cache_name(u64 config, char *bf, size_t size)
@@ -768,10 +765,10 @@ perf_evsel__reset_callgraph(struct evsel *evsel,
}
}
-static void apply_config_terms(struct evsel *evsel,
- struct record_opts *opts, bool track)
+static void evsel__apply_config_terms(struct evsel *evsel,
+ struct record_opts *opts, bool track)
{
- struct perf_evsel_config_term *term;
+ struct evsel_config_term *term;
struct list_head *config_terms = &evsel->config_terms;
struct perf_event_attr *attr = &evsel->core.attr;
/* callgraph default */
@@ -784,30 +781,30 @@ static void apply_config_terms(struct evsel *evsel,
list_for_each_entry(term, config_terms, list) {
switch (term->type) {
- case PERF_EVSEL__CONFIG_TERM_PERIOD:
+ case EVSEL__CONFIG_TERM_PERIOD:
if (!(term->weak && opts->user_interval != ULLONG_MAX)) {
attr->sample_period = term->val.period;
attr->freq = 0;
evsel__reset_sample_bit(evsel, PERIOD);
}
break;
- case PERF_EVSEL__CONFIG_TERM_FREQ:
+ case EVSEL__CONFIG_TERM_FREQ:
if (!(term->weak && opts->user_freq != UINT_MAX)) {
attr->sample_freq = term->val.freq;
attr->freq = 1;
evsel__set_sample_bit(evsel, PERIOD);
}
break;
- case PERF_EVSEL__CONFIG_TERM_TIME:
+ case EVSEL__CONFIG_TERM_TIME:
if (term->val.time)
evsel__set_sample_bit(evsel, TIME);
else
evsel__reset_sample_bit(evsel, TIME);
break;
- case PERF_EVSEL__CONFIG_TERM_CALLGRAPH:
+ case EVSEL__CONFIG_TERM_CALLGRAPH:
callgraph_buf = term->val.str;
break;
- case PERF_EVSEL__CONFIG_TERM_BRANCH:
+ case EVSEL__CONFIG_TERM_BRANCH:
if (term->val.str && strcmp(term->val.str, "no")) {
evsel__set_sample_bit(evsel, BRANCH_STACK);
parse_branch_str(term->val.str,
@@ -815,16 +812,16 @@ static void apply_config_terms(struct evsel *evsel,
} else
evsel__reset_sample_bit(evsel, BRANCH_STACK);
break;
- case PERF_EVSEL__CONFIG_TERM_STACK_USER:
+ case EVSEL__CONFIG_TERM_STACK_USER:
dump_size = term->val.stack_user;
break;
- case PERF_EVSEL__CONFIG_TERM_MAX_STACK:
+ case EVSEL__CONFIG_TERM_MAX_STACK:
max_stack = term->val.max_stack;
break;
- case PERF_EVSEL__CONFIG_TERM_MAX_EVENTS:
+ case EVSEL__CONFIG_TERM_MAX_EVENTS:
evsel->max_events = term->val.max_events;
break;
- case PERF_EVSEL__CONFIG_TERM_INHERIT:
+ case EVSEL__CONFIG_TERM_INHERIT:
/*
* attr->inherit should has already been set by
* evsel__config. If user explicitly set
@@ -833,20 +830,20 @@ static void apply_config_terms(struct evsel *evsel,
*/
attr->inherit = term->val.inherit ? 1 : 0;
break;
- case PERF_EVSEL__CONFIG_TERM_OVERWRITE:
+ case EVSEL__CONFIG_TERM_OVERWRITE:
attr->write_backward = term->val.overwrite ? 1 : 0;
break;
- case PERF_EVSEL__CONFIG_TERM_DRV_CFG:
+ case EVSEL__CONFIG_TERM_DRV_CFG:
break;
- case PERF_EVSEL__CONFIG_TERM_PERCORE:
+ case EVSEL__CONFIG_TERM_PERCORE:
break;
- case PERF_EVSEL__CONFIG_TERM_AUX_OUTPUT:
+ case EVSEL__CONFIG_TERM_AUX_OUTPUT:
attr->aux_output = term->val.aux_output ? 1 : 0;
break;
- case PERF_EVSEL__CONFIG_TERM_AUX_SAMPLE_SIZE:
+ case EVSEL__CONFIG_TERM_AUX_SAMPLE_SIZE:
/* Already applied by auxtrace */
break;
- case PERF_EVSEL__CONFIG_TERM_CFG_CHG:
+ case EVSEL__CONFIG_TERM_CFG_CHG:
break;
default:
break;
@@ -907,10 +904,9 @@ static bool is_dummy_event(struct evsel *evsel)
(evsel->core.attr.config == PERF_COUNT_SW_DUMMY);
}
-struct perf_evsel_config_term *__perf_evsel__get_config_term(struct evsel *evsel,
- enum evsel_term_type type)
+struct evsel_config_term *__evsel__get_config_term(struct evsel *evsel, enum evsel_term_type type)
{
- struct perf_evsel_config_term *term, *found_term = NULL;
+ struct evsel_config_term *term, *found_term = NULL;
list_for_each_entry(term, &evsel->config_terms, list) {
if (term->type == type)
@@ -1145,7 +1141,7 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts,
* Apply event specific term settings,
* it overloads any global configuration.
*/
- apply_config_terms(evsel, opts, track);
+ evsel__apply_config_terms(evsel, opts, track);
evsel->ignore_missing_thread = opts->ignore_missing_thread;
@@ -1158,11 +1154,14 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts,
}
/*
+ * A dummy event never triggers any actual counter and therefore
+ * cannot be used with branch_stack.
+ *
* For initial_delay, a dummy event is added implicitly.
* The software event will trigger -EOPNOTSUPP error out,
* if BRANCH_STACK bit is set.
*/
- if (opts->initial_delay && is_dummy_event(evsel))
+ if (is_dummy_event(evsel))
evsel__reset_sample_bit(evsel, BRANCH_STACK);
}
@@ -1241,9 +1240,9 @@ int evsel__disable(struct evsel *evsel)
return err;
}
-static void perf_evsel__free_config_terms(struct evsel *evsel)
+static void evsel__free_config_terms(struct evsel *evsel)
{
- struct perf_evsel_config_term *term, *h;
+ struct evsel_config_term *term, *h;
list_for_each_entry_safe(term, h, &evsel->config_terms, list) {
list_del_init(&term->list);
@@ -1257,10 +1256,10 @@ void evsel__exit(struct evsel *evsel)
{
assert(list_empty(&evsel->core.node));
assert(evsel->evlist == NULL);
- perf_evsel__free_counts(evsel);
+ evsel__free_counts(evsel);
perf_evsel__free_fd(&evsel->core);
perf_evsel__free_id(&evsel->core);
- perf_evsel__free_config_terms(evsel);
+ evsel__free_config_terms(evsel);
cgroup__put(evsel->cgrp);
perf_cpu_map__put(evsel->core.cpus);
perf_cpu_map__put(evsel->core.own_cpus);
@@ -1268,6 +1267,8 @@ void evsel__exit(struct evsel *evsel)
zfree(&evsel->group_name);
zfree(&evsel->name);
zfree(&evsel->pmu_name);
+ zfree(&evsel->per_pkg_mask);
+ zfree(&evsel->metric_events);
perf_evsel__object.fini(evsel);
}
@@ -1425,7 +1426,7 @@ int __evsel__read_on_cpu(struct evsel *evsel, int cpu, int thread, bool scale)
if (FD(evsel, cpu, thread) < 0)
return -EINVAL;
- if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1, thread + 1) < 0)
+ if (evsel->counts == NULL && evsel__alloc_counts(evsel, cpu + 1, thread + 1) < 0)
return -ENOMEM;
if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) <= 0)
@@ -2416,7 +2417,7 @@ bool evsel__fallback(struct evsel *evsel, int err, char *msg, size_t msgsize)
/* Is there already the separator in the name. */
if (strchr(name, '/') ||
- strchr(name, ':'))
+ (strchr(name, ':') && !evsel->is_libpfm_event))
sep = "";
if (asprintf(&new_name, "%s%su", name, sep) < 0)
@@ -2477,31 +2478,40 @@ int evsel__open_strerror(struct evsel *evsel, struct target *target,
int err, char *msg, size_t size)
{
char sbuf[STRERR_BUFSIZE];
- int printed = 0;
+ int printed = 0, enforced = 0;
switch (err) {
case EPERM:
case EACCES:
+ printed += scnprintf(msg + printed, size - printed,
+ "Access to performance monitoring and observability operations is limited.\n");
+
+ if (!sysfs__read_int("fs/selinux/enforce", &enforced)) {
+ if (enforced) {
+ printed += scnprintf(msg + printed, size - printed,
+ "Enforced MAC policy settings (SELinux) can limit access to performance\n"
+ "monitoring and observability operations. Inspect system audit records for\n"
+ "more perf_event access control information and adjusting the policy.\n");
+ }
+ }
+
if (err == EPERM)
- printed = scnprintf(msg, size,
+ printed += scnprintf(msg, size,
"No permission to enable %s event.\n\n", evsel__name(evsel));
return scnprintf(msg + printed, size - printed,
- "You may not have permission to collect %sstats.\n\n"
- "Consider tweaking /proc/sys/kernel/perf_event_paranoid,\n"
- "which controls use of the performance events system by\n"
- "unprivileged users (without CAP_PERFMON or CAP_SYS_ADMIN).\n\n"
- "The current value is %d:\n\n"
+ "Consider adjusting /proc/sys/kernel/perf_event_paranoid setting to open\n"
+ "access to performance monitoring and observability operations for users\n"
+ "without CAP_PERFMON or CAP_SYS_ADMIN Linux capability.\n"
+ "perf_event_paranoid setting is %d:\n"
" -1: Allow use of (almost) all events by all users\n"
" Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK\n"
- ">= 0: Disallow ftrace function tracepoint by users without CAP_PERFMON or CAP_SYS_ADMIN\n"
- " Disallow raw tracepoint access by users without CAP_SYS_PERFMON or CAP_SYS_ADMIN\n"
- ">= 1: Disallow CPU event access by users without CAP_PERFMON or CAP_SYS_ADMIN\n"
- ">= 2: Disallow kernel profiling by users without CAP_PERFMON or CAP_SYS_ADMIN\n\n"
- "To make this setting permanent, edit /etc/sysctl.conf too, e.g.:\n\n"
- " kernel.perf_event_paranoid = -1\n" ,
- target->system_wide ? "system-wide " : "",
- perf_event_paranoid());
+ ">= 0: Disallow raw and ftrace function tracepoint access\n"
+ ">= 1: Disallow CPU event access\n"
+ ">= 2: Disallow kernel profiling\n"
+ "To make the adjusted perf_event_paranoid setting permanent preserve it\n"
+ "in /etc/sysctl.conf (e.g. kernel.perf_event_paranoid = <setting>)",
+ perf_event_paranoid());
case ENOENT:
return scnprintf(msg, size, "The %s event is not supported.", evsel__name(evsel));
case EMFILE:
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-03 04:58:41 +0000