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Message-Id: <20241018054719.1004128-8-irogers@google.com>
Date: Thu, 17 Oct 2024 22:47:17 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>,
Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>,
Kan Liang <kan.liang@...ux.intel.com>, James Clark <james.clark@...aro.org>,
Howard Chu <howardchu95@...il.com>, Athira Jajeev <atrajeev@...ux.vnet.ibm.com>,
Michael Petlan <mpetlan@...hat.com>, Veronika Molnarova <vmolnaro@...hat.com>,
Dapeng Mi <dapeng1.mi@...ux.intel.com>, Thomas Richter <tmricht@...ux.ibm.com>,
Ilya Leoshkevich <iii@...ux.ibm.com>, Colin Ian King <colin.i.king@...il.com>,
Weilin Wang <weilin.wang@...el.com>, Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org,
linux-perf-users@...r.kernel.org
Subject: [PATCH v3 7/9] perf test: Run parallel tests in two passes
In pass 1 run all tests that succeed when run in parallel. In pass 2
sequentially run all remaining tests that are flagged as
"exclusive". Sequential and dont_fork tests keep to run in pass 1.
Read the exclusive flag from the shell test descriptions, but remove
from display to avoid >100 characters. Add error handling to finish
tests if starting a later test fails. Mark the task-exit test as
exclusive due to issues reported-by James Clark.
Tested-by: James Clark <james.clark@...aro.org>
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
tools/perf/tests/builtin-test.c | 157 +++++++++++++++++++------------
tools/perf/tests/task-exit.c | 9 +-
tools/perf/tests/tests-scripts.c | 7 +-
tools/perf/tests/tests.h | 9 ++
4 files changed, 121 insertions(+), 61 deletions(-)
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index f8d6477c3b0c..258dd97c122b 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -197,6 +197,14 @@ static test_fnptr test_function(const struct test_suite *t, int subtest)
return t->test_cases[subtest].run_case;
}
+static bool test_exclusive(const struct test_suite *t, int subtest)
+{
+ if (subtest <= 0)
+ return t->test_cases[0].exclusive;
+
+ return t->test_cases[subtest].exclusive;
+}
+
static bool perf_test__matches(const char *desc, int curr, int argc, const char *argv[])
{
int i;
@@ -240,7 +248,7 @@ static int run_test_child(struct child_process *process)
const int signals[] = {
SIGABRT, SIGBUS, SIGFPE, SIGILL, SIGINT, SIGPIPE, SIGQUIT, SIGSEGV, SIGTERM,
};
- static struct child_test *child;
+ struct child_test *child = container_of(process, struct child_test, process);
int err;
err = sigsetjmp(run_test_jmp_buf, 1);
@@ -250,7 +258,6 @@ static int run_test_child(struct child_process *process)
goto err_out;
}
- child = container_of(process, struct child_test, process);
for (size_t i = 0; i < ARRAY_SIZE(signals); i++)
signal(signals[i], child_test_sig_handler);
@@ -303,19 +310,25 @@ static int print_test_result(struct test_suite *t, int i, int subtest, int resul
return 0;
}
-static int finish_test(struct child_test **child_tests, int running_test, int child_test_num,
- int width)
+static void finish_test(struct child_test **child_tests, int running_test, int child_test_num,
+ int width)
{
struct child_test *child_test = child_tests[running_test];
- struct test_suite *t = child_test->test;
- int i = child_test->test_num;
- int subi = child_test->subtest;
- int err = child_test->process.err;
+ struct test_suite *t;
+ int i, subi, err;
bool err_done = false;
struct strbuf err_output = STRBUF_INIT;
int last_running = -1;
int ret;
+ if (child_test == NULL) {
+ /* Test wasn't started. */
+ return;
+ }
+ t = child_test->test;
+ i = child_test->test_num;
+ subi = child_test->subtest;
+ err = child_test->process.err;
/*
* For test suites with subtests, display the suite name ahead of the
* sub test names.
@@ -345,6 +358,8 @@ static int finish_test(struct child_test **child_tests, int running_test, int ch
int running = 0;
for (int y = running_test; y < child_test_num; y++) {
+ if (child_tests[y] == NULL)
+ continue;
if (check_if_command_finished(&child_tests[y]->process) == 0)
running++;
}
@@ -397,23 +412,32 @@ static int finish_test(struct child_test **child_tests, int running_test, int ch
print_test_result(t, i, subi, ret, width, /*running=*/0);
if (err > 0)
close(err);
- return 0;
+ zfree(&child_tests[running_test]);
}
static int start_test(struct test_suite *test, int i, int subi, struct child_test **child,
- int width)
+ int width, int pass)
{
int err;
*child = NULL;
if (dont_fork) {
- pr_debug("--- start ---\n");
- err = test_function(test, subi)(test, subi);
- pr_debug("---- end ----\n");
- print_test_result(test, i, subi, err, width, /*running=*/0);
+ if (pass == 1) {
+ pr_debug("--- start ---\n");
+ err = test_function(test, subi)(test, subi);
+ pr_debug("---- end ----\n");
+ print_test_result(test, i, subi, err, width, /*running=*/0);
+ }
+ return 0;
+ }
+ if (pass == 1 && !sequential && test_exclusive(test, subi)) {
+ /* When parallel, skip exclusive tests on the first pass. */
+ return 0;
+ }
+ if (pass != 1 && (sequential || !test_exclusive(test, subi))) {
+ /* Sequential and non-exclusive tests were run on the first pass. */
return 0;
}
-
*child = zalloc(sizeof(**child));
if (!*child)
return -ENOMEM;
@@ -432,10 +456,14 @@ static int start_test(struct test_suite *test, int i, int subi, struct child_tes
(*child)->process.err = -1;
}
(*child)->process.no_exec_cmd = run_test_child;
- err = start_command(&(*child)->process);
- if (err || !sequential)
- return err;
- return finish_test(child, /*running_test=*/0, /*child_test_num=*/1, width);
+ if (sequential || pass == 2) {
+ err = start_command(&(*child)->process);
+ if (err)
+ return err;
+ finish_test(child, /*running_test=*/0, /*child_test_num=*/1, width);
+ return 0;
+ }
+ return start_command(&(*child)->process);
}
#define for_each_test(j, k, t) \
@@ -445,12 +473,11 @@ static int start_test(struct test_suite *test, int i, int subi, struct child_tes
static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
{
struct test_suite *t;
- unsigned int j, k;
- int i = 0;
int width = 0;
+ unsigned int j, k;
size_t num_tests = 0;
struct child_test **child_tests;
- int child_test_num = 0;
+ int err = 0;
for_each_test(j, k, t) {
int len = strlen(test_description(t, -1));
@@ -473,62 +500,73 @@ static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
if (!child_tests)
return -ENOMEM;
- for_each_test(j, k, t) {
- int curr = i++;
-
- if (!perf_test__matches(test_description(t, -1), curr, argc, argv)) {
- bool skip = true;
+ /*
+ * In parallel mode pass 1 runs non-exclusive tests in parallel, pass 2
+ * runs the exclusive tests sequentially. In other modes all tests are
+ * run in pass 1.
+ */
+ for (int pass = 1; pass <= 2; pass++) {
+ int child_test_num = 0;
+ int i = 0;
+
+ for_each_test(j, k, t) {
+ int curr = i++;
+
+ if (!perf_test__matches(test_description(t, -1), curr, argc, argv)) {
+ /*
+ * Test suite shouldn't be run based on
+ * description. See if subtest should.
+ */
+ bool skip = true;
+
+ for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) {
+ if (perf_test__matches(test_description(t, subi),
+ curr, argc, argv))
+ skip = false;
+ }
- for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) {
- if (perf_test__matches(test_description(t, subi),
- curr, argc, argv))
- skip = false;
+ if (skip)
+ continue;
}
- if (skip)
+ if (intlist__find(skiplist, i)) {
+ pr_info("%3d: %-*s:", curr + 1, width, test_description(t, -1));
+ color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
continue;
- }
-
- if (intlist__find(skiplist, i)) {
- pr_info("%3d: %-*s:", curr + 1, width, test_description(t, -1));
- color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
- continue;
- }
-
- if (!has_subtests(t)) {
- int err = start_test(t, curr, -1, &child_tests[child_test_num++], width);
+ }
- if (err) {
- /* TODO: if !sequential waitpid the already forked children. */
- free(child_tests);
- return err;
+ if (!has_subtests(t)) {
+ err = start_test(t, curr, -1, &child_tests[child_test_num++],
+ width, pass);
+ if (err)
+ goto err_out;
+ continue;
}
- } else {
for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) {
- int err;
-
if (!perf_test__matches(test_description(t, subi),
curr, argc, argv))
continue;
err = start_test(t, curr, subi, &child_tests[child_test_num++],
- width);
+ width, pass);
if (err)
- return err;
+ goto err_out;
}
}
- }
- for (i = 0; i < child_test_num; i++) {
if (!sequential) {
- int ret = finish_test(child_tests, i, child_test_num, width);
-
- if (ret)
- return ret;
+ /* Parallel mode starts tests but doesn't finish them. Do that now. */
+ for (size_t x = 0; x < num_tests; x++)
+ finish_test(child_tests, x, num_tests, width);
}
- free(child_tests[i]);
+ }
+err_out:
+ if (err) {
+ pr_err("Internal test harness failure. Completing any started tests:\n:");
+ for (size_t x = 0; x < num_tests; x++)
+ finish_test(child_tests, x, num_tests, width);
}
free(child_tests);
- return 0;
+ return err;
}
static int perf_test__list(int argc, const char **argv)
@@ -638,6 +676,7 @@ int cmd_test(int argc, const char **argv)
symbol_conf.priv_size = sizeof(int);
symbol_conf.try_vmlinux_path = true;
+
if (symbol__init(NULL) < 0)
return -1;
diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c
index d33d0952025c..8e328bbd509d 100644
--- a/tools/perf/tests/task-exit.c
+++ b/tools/perf/tests/task-exit.c
@@ -152,4 +152,11 @@ static int test__task_exit(struct test_suite *test __maybe_unused, int subtest _
return err;
}
-DEFINE_SUITE("Number of exit events of a simple workload", task_exit);
+struct test_case tests__task_exit[] = {
+ TEST_CASE_EXCLUSIVE("Number of exit events of a simple workload", task_exit),
+ { .name = NULL, }
+};
+struct test_suite suite__task_exit = {
+ .desc = "Number of exit events of a simple workload",
+ .test_cases = tests__task_exit,
+};
diff --git a/tools/perf/tests/tests-scripts.c b/tools/perf/tests/tests-scripts.c
index ed114b044293..cf3ae0c1d871 100644
--- a/tools/perf/tests/tests-scripts.c
+++ b/tools/perf/tests/tests-scripts.c
@@ -175,6 +175,7 @@ static void append_script(int dir_fd, const char *name, char *desc,
struct test_suite *test_suite, **result_tmp;
struct test_case *tests;
size_t len;
+ char *exclusive;
snprintf(link, sizeof(link), "/proc/%d/fd/%d", getpid(), dir_fd);
len = readlink(link, filename, sizeof(filename));
@@ -191,9 +192,13 @@ static void append_script(int dir_fd, const char *name, char *desc,
return;
}
tests[0].name = strdup_check(name);
+ exclusive = strstr(desc, " (exclusive)");
+ if (exclusive != NULL) {
+ tests[0].exclusive = true;
+ exclusive[0] = '\0';
+ }
tests[0].desc = strdup_check(desc);
tests[0].run_case = shell_test__run;
-
test_suite = zalloc(sizeof(*test_suite));
if (!test_suite) {
pr_err("Out of memory while building script test suite list\n");
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index 1ed76d4156b6..af284dd47e5c 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -36,6 +36,7 @@ struct test_case {
const char *desc;
const char *skip_reason;
test_fnptr run_case;
+ bool exclusive;
};
struct test_suite {
@@ -62,6 +63,14 @@ struct test_suite {
.skip_reason = _reason, \
}
+#define TEST_CASE_EXCLUSIVE(description, _name) \
+ { \
+ .name = #_name, \
+ .desc = description, \
+ .run_case = test__##_name, \
+ .exclusive = true, \
+ }
+
#define DEFINE_SUITE(description, _name) \
struct test_case tests__##_name[] = { \
TEST_CASE(description, _name), \
--
2.47.0.105.g07ac214952-goog
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