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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /tools/perf/tests/pmu.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/tests/pmu.c')
-rw-r--r--tools/perf/tests/pmu.c197
1 files changed, 197 insertions, 0 deletions
diff --git a/tools/perf/tests/pmu.c b/tools/perf/tests/pmu.c
new file mode 100644
index 0000000000..eb60e5f668
--- /dev/null
+++ b/tools/perf/tests/pmu.c
@@ -0,0 +1,197 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "parse-events.h"
+#include "pmu.h"
+#include "tests.h"
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <linux/kernel.h>
+#include <linux/limits.h>
+#include <linux/zalloc.h>
+
+/* Simulated format definitions. */
+static struct test_format {
+ const char *name;
+ const char *value;
+} test_formats[] = {
+ { "krava01", "config:0-1,62-63\n", },
+ { "krava02", "config:10-17\n", },
+ { "krava03", "config:5\n", },
+ { "krava11", "config1:0,2,4,6,8,20-28\n", },
+ { "krava12", "config1:63\n", },
+ { "krava13", "config1:45-47\n", },
+ { "krava21", "config2:0-3,10-13,20-23,30-33,40-43,50-53,60-63\n", },
+ { "krava22", "config2:8,18,48,58\n", },
+ { "krava23", "config2:28-29,38\n", },
+};
+
+/* Simulated users input. */
+static struct parse_events_term test_terms[] = {
+ {
+ .config = "krava01",
+ .val.num = 15,
+ .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
+ .type_term = PARSE_EVENTS__TERM_TYPE_USER,
+ },
+ {
+ .config = "krava02",
+ .val.num = 170,
+ .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
+ .type_term = PARSE_EVENTS__TERM_TYPE_USER,
+ },
+ {
+ .config = "krava03",
+ .val.num = 1,
+ .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
+ .type_term = PARSE_EVENTS__TERM_TYPE_USER,
+ },
+ {
+ .config = "krava11",
+ .val.num = 27,
+ .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
+ .type_term = PARSE_EVENTS__TERM_TYPE_USER,
+ },
+ {
+ .config = "krava12",
+ .val.num = 1,
+ .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
+ .type_term = PARSE_EVENTS__TERM_TYPE_USER,
+ },
+ {
+ .config = "krava13",
+ .val.num = 2,
+ .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
+ .type_term = PARSE_EVENTS__TERM_TYPE_USER,
+ },
+ {
+ .config = "krava21",
+ .val.num = 119,
+ .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
+ .type_term = PARSE_EVENTS__TERM_TYPE_USER,
+ },
+ {
+ .config = "krava22",
+ .val.num = 11,
+ .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
+ .type_term = PARSE_EVENTS__TERM_TYPE_USER,
+ },
+ {
+ .config = "krava23",
+ .val.num = 2,
+ .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
+ .type_term = PARSE_EVENTS__TERM_TYPE_USER,
+ },
+};
+
+/*
+ * Prepare format directory data, exported by kernel
+ * at /sys/bus/event_source/devices/<dev>/format.
+ */
+static char *test_format_dir_get(char *dir, size_t sz)
+{
+ unsigned int i;
+
+ snprintf(dir, sz, "/tmp/perf-pmu-test-format-XXXXXX");
+ if (!mkdtemp(dir))
+ return NULL;
+
+ for (i = 0; i < ARRAY_SIZE(test_formats); i++) {
+ char name[PATH_MAX];
+ struct test_format *format = &test_formats[i];
+ FILE *file;
+
+ scnprintf(name, PATH_MAX, "%s/%s", dir, format->name);
+
+ file = fopen(name, "w");
+ if (!file)
+ return NULL;
+
+ if (1 != fwrite(format->value, strlen(format->value), 1, file))
+ break;
+
+ fclose(file);
+ }
+
+ return dir;
+}
+
+/* Cleanup format directory. */
+static int test_format_dir_put(char *dir)
+{
+ char buf[PATH_MAX + 20];
+
+ snprintf(buf, sizeof(buf), "rm -f %s/*\n", dir);
+ if (system(buf))
+ return -1;
+
+ snprintf(buf, sizeof(buf), "rmdir %s\n", dir);
+ return system(buf);
+}
+
+static struct list_head *test_terms_list(void)
+{
+ static LIST_HEAD(terms);
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(test_terms); i++)
+ list_add_tail(&test_terms[i].list, &terms);
+
+ return &terms;
+}
+
+static int test__pmu(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
+{
+ char dir[PATH_MAX];
+ char *format;
+ struct list_head *terms = test_terms_list();
+ struct perf_event_attr attr;
+ struct perf_pmu *pmu;
+ int fd;
+ int ret;
+
+ pmu = zalloc(sizeof(*pmu));
+ if (!pmu)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&pmu->format);
+ INIT_LIST_HEAD(&pmu->aliases);
+ INIT_LIST_HEAD(&pmu->caps);
+ format = test_format_dir_get(dir, sizeof(dir));
+ if (!format) {
+ free(pmu);
+ return -EINVAL;
+ }
+
+ memset(&attr, 0, sizeof(attr));
+
+ fd = open(format, O_DIRECTORY);
+ if (fd < 0) {
+ ret = fd;
+ goto out;
+ }
+
+ pmu->name = strdup("perf-pmu-test");
+ ret = perf_pmu__format_parse(pmu, fd, /*eager_load=*/true);
+ if (ret)
+ goto out;
+
+ ret = perf_pmu__config_terms(pmu, &attr, terms, /*zero=*/false, /*err=*/NULL);
+ if (ret)
+ goto out;
+
+ ret = -EINVAL;
+ if (attr.config != 0xc00000000002a823)
+ goto out;
+ if (attr.config1 != 0x8000400000000145)
+ goto out;
+ if (attr.config2 != 0x0400000020041d07)
+ goto out;
+
+ ret = 0;
+out:
+ test_format_dir_put(format);
+ perf_pmu__delete(pmu);
+ return ret;
+}
+
+DEFINE_SUITE("Parse perf pmu format", pmu);