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-rw-r--r--tools/lib/perf/tests/test-evlist.c218
1 files changed, 197 insertions, 21 deletions
diff --git a/tools/lib/perf/tests/test-evlist.c b/tools/lib/perf/tests/test-evlist.c
index 6d8ebe0c2504..10f70cb41ff1 100644
--- a/tools/lib/perf/tests/test-evlist.c
+++ b/tools/lib/perf/tests/test-evlist.c
@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE // needed for sched.h to get sched_[gs]etaffinity and CPU_(ZERO,SET)
+#include <inttypes.h>
#include <sched.h>
#include <stdio.h>
#include <stdarg.h>
@@ -18,6 +19,11 @@
#include <perf/event.h>
#include <internal/tests.h>
#include <api/fs/fs.h>
+#include "tests.h"
+#include <internal/evsel.h>
+
+#define EVENT_NUM 15
+#define WAIT_COUNT 100000000UL
static int libperf_print(enum libperf_print_level level,
const char *fmt, va_list ap)
@@ -29,7 +35,7 @@ static int test_stat_cpu(void)
{
struct perf_cpu_map *cpus;
struct perf_evlist *evlist;
- struct perf_evsel *evsel;
+ struct perf_evsel *evsel, *leader;
struct perf_event_attr attr1 = {
.type = PERF_TYPE_SOFTWARE,
.config = PERF_COUNT_SW_CPU_CLOCK,
@@ -38,15 +44,15 @@ static int test_stat_cpu(void)
.type = PERF_TYPE_SOFTWARE,
.config = PERF_COUNT_SW_TASK_CLOCK,
};
- int err, cpu, tmp;
+ int err, idx;
- cpus = perf_cpu_map__new(NULL);
+ cpus = perf_cpu_map__new_online_cpus();
__T("failed to create cpus", cpus);
evlist = perf_evlist__new();
__T("failed to create evlist", evlist);
- evsel = perf_evsel__new(&attr1);
+ evsel = leader = perf_evsel__new(&attr1);
__T("failed to create evsel1", evsel);
perf_evlist__add(evlist, evsel);
@@ -56,18 +62,22 @@ static int test_stat_cpu(void)
perf_evlist__add(evlist, evsel);
+ perf_evlist__set_leader(evlist);
+ __T("failed to set leader", leader->leader == leader);
+ __T("failed to set leader", evsel->leader == leader);
+
perf_evlist__set_maps(evlist, cpus, NULL);
err = perf_evlist__open(evlist);
- __T("failed to open evsel", err == 0);
+ __T("failed to open evlist", err == 0);
perf_evlist__for_each_evsel(evlist, evsel) {
cpus = perf_evsel__cpus(evsel);
- perf_cpu_map__for_each_cpu(cpu, tmp, cpus) {
+ for (idx = 0; idx < perf_cpu_map__nr(cpus); idx++) {
struct perf_counts_values counts = { .val = 0 };
- perf_evsel__read(evsel, cpu, 0, &counts);
+ perf_evsel__read(evsel, idx, 0, &counts);
__T("failed to read value for evsel", counts.val != 0);
}
}
@@ -84,7 +94,7 @@ static int test_stat_thread(void)
struct perf_counts_values counts = { .val = 0 };
struct perf_thread_map *threads;
struct perf_evlist *evlist;
- struct perf_evsel *evsel;
+ struct perf_evsel *evsel, *leader;
struct perf_event_attr attr1 = {
.type = PERF_TYPE_SOFTWARE,
.config = PERF_COUNT_SW_CPU_CLOCK,
@@ -103,7 +113,7 @@ static int test_stat_thread(void)
evlist = perf_evlist__new();
__T("failed to create evlist", evlist);
- evsel = perf_evsel__new(&attr1);
+ evsel = leader = perf_evsel__new(&attr1);
__T("failed to create evsel1", evsel);
perf_evlist__add(evlist, evsel);
@@ -113,10 +123,14 @@ static int test_stat_thread(void)
perf_evlist__add(evlist, evsel);
+ perf_evlist__set_leader(evlist);
+ __T("failed to set leader", leader->leader == leader);
+ __T("failed to set leader", evsel->leader == leader);
+
perf_evlist__set_maps(evlist, NULL, threads);
err = perf_evlist__open(evlist);
- __T("failed to open evsel", err == 0);
+ __T("failed to open evlist", err == 0);
perf_evlist__for_each_evsel(evlist, evsel) {
perf_evsel__read(evsel, 0, 0, &counts);
@@ -135,7 +149,7 @@ static int test_stat_thread_enable(void)
struct perf_counts_values counts = { .val = 0 };
struct perf_thread_map *threads;
struct perf_evlist *evlist;
- struct perf_evsel *evsel;
+ struct perf_evsel *evsel, *leader;
struct perf_event_attr attr1 = {
.type = PERF_TYPE_SOFTWARE,
.config = PERF_COUNT_SW_CPU_CLOCK,
@@ -156,7 +170,7 @@ static int test_stat_thread_enable(void)
evlist = perf_evlist__new();
__T("failed to create evlist", evlist);
- evsel = perf_evsel__new(&attr1);
+ evsel = leader = perf_evsel__new(&attr1);
__T("failed to create evsel1", evsel);
perf_evlist__add(evlist, evsel);
@@ -166,10 +180,14 @@ static int test_stat_thread_enable(void)
perf_evlist__add(evlist, evsel);
+ perf_evlist__set_leader(evlist);
+ __T("failed to set leader", leader->leader == leader);
+ __T("failed to set leader", evsel->leader == leader);
+
perf_evlist__set_maps(evlist, NULL, threads);
err = perf_evlist__open(evlist);
- __T("failed to open evsel", err == 0);
+ __T("failed to open evlist", err == 0);
perf_evlist__for_each_evsel(evlist, evsel) {
perf_evsel__read(evsel, 0, 0, &counts);
@@ -208,13 +226,13 @@ static int test_mmap_thread(void)
char path[PATH_MAX];
int id, err, pid, go_pipe[2];
union perf_event *event;
- char bf;
int count = 0;
snprintf(path, PATH_MAX, "%s/kernel/debug/tracing/events/syscalls/sys_enter_prctl/id",
sysfs__mountpoint());
if (filename__read_int(path, &id)) {
+ tests_failed++;
fprintf(stderr, "error: failed to get tracepoint id: %s\n", path);
return -1;
}
@@ -229,6 +247,7 @@ static int test_mmap_thread(void)
pid = fork();
if (!pid) {
int i;
+ char bf;
read(go_pipe[0], &bf, 1);
@@ -242,7 +261,7 @@ static int test_mmap_thread(void)
threads = perf_thread_map__new_dummy();
__T("failed to create threads", threads);
- cpus = perf_cpu_map__dummy_new();
+ cpus = perf_cpu_map__new_any_cpu();
__T("failed to create cpus", cpus);
perf_thread_map__set_pid(threads, 0, pid);
@@ -252,6 +271,7 @@ static int test_mmap_thread(void)
evsel = perf_evsel__new(&attr);
__T("failed to create evsel1", evsel);
+ __T("failed to set leader", evsel->leader == evsel);
perf_evlist__add(evlist, evsel);
@@ -266,7 +286,7 @@ static int test_mmap_thread(void)
perf_evlist__enable(evlist);
/* kick the child and wait for it to finish */
- write(go_pipe[1], &bf, 1);
+ write(go_pipe[1], "A", 1);
waitpid(pid, NULL, 0);
/*
@@ -315,7 +335,8 @@ static int test_mmap_cpus(void)
};
cpu_set_t saved_mask;
char path[PATH_MAX];
- int id, err, cpu, tmp;
+ int id, err, tmp;
+ struct perf_cpu cpu;
union perf_event *event;
int count = 0;
@@ -329,7 +350,7 @@ static int test_mmap_cpus(void)
attr.config = id;
- cpus = perf_cpu_map__new(NULL);
+ cpus = perf_cpu_map__new_online_cpus();
__T("failed to create cpus", cpus);
evlist = perf_evlist__new();
@@ -337,6 +358,7 @@ static int test_mmap_cpus(void)
evsel = perf_evsel__new(&attr);
__T("failed to create evsel1", evsel);
+ __T("failed to set leader", evsel->leader == evsel);
perf_evlist__add(evlist, evsel);
@@ -357,7 +379,7 @@ static int test_mmap_cpus(void)
cpu_set_t mask;
CPU_ZERO(&mask);
- CPU_SET(cpu, &mask);
+ CPU_SET(cpu.cpu, &mask);
err = sched_setaffinity(0, sizeof(mask), &mask);
__T("sched_setaffinity failed", err == 0);
@@ -396,7 +418,160 @@ static int test_mmap_cpus(void)
return 0;
}
-int main(int argc, char **argv)
+static double display_error(long long average,
+ long long high,
+ long long low,
+ long long expected)
+{
+ double error;
+
+ error = (((double)average - expected) / expected) * 100.0;
+
+ __T_VERBOSE(" Expected: %lld\n", expected);
+ __T_VERBOSE(" High: %lld Low: %lld Average: %lld\n",
+ high, low, average);
+
+ __T_VERBOSE(" Average Error = %.2f%%\n", error);
+
+ return error;
+}
+
+static int test_stat_multiplexing(void)
+{
+ struct perf_counts_values expected_counts = { .val = 0 };
+ struct perf_counts_values counts[EVENT_NUM] = {{ .val = 0 },};
+ struct perf_thread_map *threads;
+ struct perf_evlist *evlist;
+ struct perf_evsel *evsel;
+ struct perf_event_attr attr = {
+ .type = PERF_TYPE_HARDWARE,
+ .config = PERF_COUNT_HW_INSTRUCTIONS,
+ .read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
+ PERF_FORMAT_TOTAL_TIME_RUNNING,
+ .disabled = 1,
+ };
+ int err, i, nonzero = 0;
+ unsigned long count;
+ long long max = 0, min = 0, avg = 0;
+ double error = 0.0;
+ s8 scaled = 0;
+
+ /* read for non-multiplexing event count */
+ threads = perf_thread_map__new_dummy();
+ __T("failed to create threads", threads);
+
+ perf_thread_map__set_pid(threads, 0, 0);
+
+ evsel = perf_evsel__new(&attr);
+ __T("failed to create evsel", evsel);
+
+ err = perf_evsel__open(evsel, NULL, threads);
+ __T("failed to open evsel", err == 0);
+
+ err = perf_evsel__enable(evsel);
+ __T("failed to enable evsel", err == 0);
+
+ /* wait loop */
+ count = WAIT_COUNT;
+ while (count--)
+ ;
+
+ perf_evsel__read(evsel, 0, 0, &expected_counts);
+ __T("failed to read value for evsel", expected_counts.val != 0);
+ __T("failed to read non-multiplexing event count",
+ expected_counts.ena == expected_counts.run);
+
+ err = perf_evsel__disable(evsel);
+ __T("failed to enable evsel", err == 0);
+
+ perf_evsel__close(evsel);
+ perf_evsel__delete(evsel);
+
+ perf_thread_map__put(threads);
+
+ /* read for multiplexing event count */
+ threads = perf_thread_map__new_dummy();
+ __T("failed to create threads", threads);
+
+ perf_thread_map__set_pid(threads, 0, 0);
+
+ evlist = perf_evlist__new();
+ __T("failed to create evlist", evlist);
+
+ for (i = 0; i < EVENT_NUM; i++) {
+ evsel = perf_evsel__new(&attr);
+ __T("failed to create evsel", evsel);
+
+ perf_evlist__add(evlist, evsel);
+ }
+ perf_evlist__set_maps(evlist, NULL, threads);
+
+ err = perf_evlist__open(evlist);
+ __T("failed to open evlist", err == 0);
+
+ perf_evlist__enable(evlist);
+
+ /* wait loop */
+ count = WAIT_COUNT;
+ while (count--)
+ ;
+
+ i = 0;
+ perf_evlist__for_each_evsel(evlist, evsel) {
+ perf_evsel__read(evsel, 0, 0, &counts[i]);
+ __T("failed to read value for evsel", counts[i].val != 0);
+ i++;
+ }
+
+ perf_evlist__disable(evlist);
+
+ min = counts[0].val;
+ for (i = 0; i < EVENT_NUM; i++) {
+ __T_VERBOSE("Event %2d -- Raw count = %" PRIu64 ", run = %" PRIu64 ", enable = %" PRIu64 "\n",
+ i, counts[i].val, counts[i].run, counts[i].ena);
+
+ perf_counts_values__scale(&counts[i], true, &scaled);
+ if (scaled == 1) {
+ __T_VERBOSE("\t Scaled count = %" PRIu64 " (%.2lf%%, %" PRIu64 "/%" PRIu64 ")\n",
+ counts[i].val,
+ (double)counts[i].run / (double)counts[i].ena * 100.0,
+ counts[i].run, counts[i].ena);
+ } else if (scaled == -1) {
+ __T_VERBOSE("\t Not Running\n");
+ } else {
+ __T_VERBOSE("\t Not Scaling\n");
+ }
+
+ if (counts[i].val > max)
+ max = counts[i].val;
+
+ if (counts[i].val < min)
+ min = counts[i].val;
+
+ avg += counts[i].val;
+
+ if (counts[i].val != 0)
+ nonzero++;
+ }
+
+ if (nonzero != 0)
+ avg = avg / nonzero;
+ else
+ avg = 0;
+
+ error = display_error(avg, max, min, expected_counts.val);
+
+ __T("Error out of range!", ((error <= 1.0) && (error >= -1.0)));
+
+ perf_evlist__close(evlist);
+ perf_evlist__delete(evlist);
+
+ perf_thread_map__put(threads);
+
+ return 0;
+}
+
+int test_evlist(int argc, char **argv)
{
__T_START;
@@ -407,7 +582,8 @@ int main(int argc, char **argv)
test_stat_thread_enable();
test_mmap_thread();
test_mmap_cpus();
+ test_stat_multiplexing();
__T_END;
- return 0;
+ return tests_failed == 0 ? 0 : -1;
}
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