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-rw-r--r--tools/perf/util/evsel.c81
1 files changed, 72 insertions, 9 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index c26ea82220bd..7ecbc8e2fbfa 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -25,6 +25,7 @@
#include <stdlib.h>
#include <perf/evsel.h>
#include "asm/bug.h"
+#include "bpf_counter.h"
#include "callchain.h"
#include "cgroup.h"
#include "counts.h"
@@ -45,6 +46,7 @@
#include "string2.h"
#include "memswap.h"
#include "util.h"
+#include "hashmap.h"
#include "../perf-sys.h"
#include "util/parse-branch-options.h"
#include <internal/xyarray.h>
@@ -247,6 +249,7 @@ void evsel__init(struct evsel *evsel,
evsel->bpf_obj = NULL;
evsel->bpf_fd = -1;
INIT_LIST_HEAD(&evsel->config_terms);
+ INIT_LIST_HEAD(&evsel->bpf_counter_list);
perf_evsel__object.init(evsel);
evsel->sample_size = __evsel__sample_size(attr->sample_type);
evsel__calc_id_pos(evsel);
@@ -1012,6 +1015,11 @@ struct evsel_config_term *__evsel__get_config_term(struct evsel *evsel, enum evs
return found_term;
}
+void __weak arch_evsel__set_sample_weight(struct evsel *evsel)
+{
+ evsel__set_sample_bit(evsel, WEIGHT);
+}
+
/*
* The enable_on_exec/disabled value strategy:
*
@@ -1166,12 +1174,14 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts,
}
if (opts->sample_weight)
- evsel__set_sample_bit(evsel, WEIGHT);
+ arch_evsel__set_sample_weight(evsel);
+
+ attr->task = track;
+ attr->mmap = track;
+ attr->mmap2 = track && !perf_missing_features.mmap2;
+ attr->comm = track;
+ attr->build_id = track && opts->build_id;
- attr->task = track;
- attr->mmap = track;
- attr->mmap2 = track && !perf_missing_features.mmap2;
- attr->comm = track;
/*
* ksymbol is tracked separately with text poke because it needs to be
* system wide and enabled immediately.
@@ -1191,6 +1201,9 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts,
if (opts->sample_data_page_size)
evsel__set_sample_bit(evsel, DATA_PAGE_SIZE);
+ if (opts->sample_code_page_size)
+ evsel__set_sample_bit(evsel, CODE_PAGE_SIZE);
+
if (opts->record_switch_events)
attr->context_switch = track;
@@ -1366,6 +1379,7 @@ void evsel__exit(struct evsel *evsel)
{
assert(list_empty(&evsel->core.node));
assert(evsel->evlist == NULL);
+ bpf_counter__destroy(evsel);
evsel__free_counts(evsel);
perf_evsel__free_fd(&evsel->core);
perf_evsel__free_id(&evsel->core);
@@ -1377,7 +1391,9 @@ void evsel__exit(struct evsel *evsel)
zfree(&evsel->group_name);
zfree(&evsel->name);
zfree(&evsel->pmu_name);
- zfree(&evsel->per_pkg_mask);
+ evsel__zero_per_pkg(evsel);
+ hashmap__free(evsel->per_pkg_mask);
+ evsel->per_pkg_mask = NULL;
zfree(&evsel->metric_events);
perf_evsel__object.fini(evsel);
}
@@ -1735,6 +1751,10 @@ static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus,
}
fallback_missing_features:
+ if (perf_missing_features.weight_struct) {
+ evsel__set_sample_bit(evsel, WEIGHT);
+ evsel__reset_sample_bit(evsel, WEIGHT_STRUCT);
+ }
if (perf_missing_features.clockid_wrong)
evsel->core.attr.clockid = CLOCK_MONOTONIC; /* should always work */
if (perf_missing_features.clockid) {
@@ -1781,6 +1801,8 @@ retry_open:
FD(evsel, cpu, thread) = fd;
+ bpf_counter__install_pe(evsel, cpu, fd);
+
if (unlikely(test_attr__enabled)) {
test_attr__open(&evsel->core.attr, pid, cpus->map[cpu],
fd, group_fd, flags);
@@ -1873,7 +1895,17 @@ try_fallback:
* Must probe features in the order they were added to the
* perf_event_attr interface.
*/
- if (!perf_missing_features.data_page_size &&
+ if (!perf_missing_features.weight_struct &&
+ (evsel->core.attr.sample_type & PERF_SAMPLE_WEIGHT_STRUCT)) {
+ perf_missing_features.weight_struct = true;
+ pr_debug2("switching off weight struct support\n");
+ goto fallback_missing_features;
+ } else if (!perf_missing_features.code_page_size &&
+ (evsel->core.attr.sample_type & PERF_SAMPLE_CODE_PAGE_SIZE)) {
+ perf_missing_features.code_page_size = true;
+ pr_debug2_peo("Kernel has no PERF_SAMPLE_CODE_PAGE_SIZE support, bailing out\n");
+ goto out_close;
+ } else if (!perf_missing_features.data_page_size &&
(evsel->core.attr.sample_type & PERF_SAMPLE_DATA_PAGE_SIZE)) {
perf_missing_features.data_page_size = true;
pr_debug2_peo("Kernel has no PERF_SAMPLE_DATA_PAGE_SIZE support, bailing out\n");
@@ -2076,6 +2108,13 @@ perf_event__check_size(union perf_event *event, unsigned int sample_size)
return 0;
}
+void __weak arch_perf_parse_sample_weight(struct perf_sample *data,
+ const __u64 *array,
+ u64 type __maybe_unused)
+{
+ data->weight = *array;
+}
+
int evsel__parse_sample(struct evsel *evsel, union perf_event *event,
struct perf_sample *data)
{
@@ -2316,9 +2355,9 @@ int evsel__parse_sample(struct evsel *evsel, union perf_event *event,
}
}
- if (type & PERF_SAMPLE_WEIGHT) {
+ if (type & PERF_SAMPLE_WEIGHT_TYPE) {
OVERFLOW_CHECK_u64(array);
- data->weight = *array;
+ arch_perf_parse_sample_weight(data, array, type);
array++;
}
@@ -2369,6 +2408,12 @@ int evsel__parse_sample(struct evsel *evsel, union perf_event *event,
array++;
}
+ data->code_page_size = 0;
+ if (type & PERF_SAMPLE_CODE_PAGE_SIZE) {
+ data->code_page_size = *array;
+ array++;
+ }
+
if (type & PERF_SAMPLE_AUX) {
OVERFLOW_CHECK_u64(array);
sz = *array++;
@@ -2678,6 +2723,8 @@ int evsel__open_strerror(struct evsel *evsel, struct target *target,
"We found oprofile daemon running, please stop it and try again.");
break;
case EINVAL:
+ if (evsel->core.attr.sample_type & PERF_SAMPLE_CODE_PAGE_SIZE && perf_missing_features.code_page_size)
+ return scnprintf(msg, size, "Asking for the code page size isn't supported by this kernel.");
if (evsel->core.attr.sample_type & PERF_SAMPLE_DATA_PAGE_SIZE && perf_missing_features.data_page_size)
return scnprintf(msg, size, "Asking for the data page size isn't supported by this kernel.");
if (evsel->core.attr.write_backward && perf_missing_features.write_backward)
@@ -2689,6 +2736,9 @@ int evsel__open_strerror(struct evsel *evsel, struct target *target,
if (perf_missing_features.aux_output)
return scnprintf(msg, size, "The 'aux_output' feature is not supported, update the kernel.");
break;
+ case ENODATA:
+ return scnprintf(msg, size, "Cannot collect data source with the load latency event alone. "
+ "Please add an auxiliary event in front of the load latency event.");
default:
break;
}
@@ -2734,3 +2784,16 @@ int evsel__store_ids(struct evsel *evsel, struct evlist *evlist)
return store_evsel_ids(evsel, evlist);
}
+
+void evsel__zero_per_pkg(struct evsel *evsel)
+{
+ struct hashmap_entry *cur;
+ size_t bkt;
+
+ if (evsel->per_pkg_mask) {
+ hashmap__for_each_entry(evsel->per_pkg_mask, cur, bkt)
+ free((char *)cur->key);
+
+ hashmap__clear(evsel->per_pkg_mask);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-26 11:38:02 +0000