From: Gabriel Krisman Bertazi krisman@collabora.com
Add test for wait at multiple futexes mechanism. Skip the test if it's a x32 application and the kernel returned the approtiaded error, since this ABI is not supported for this operation.
Signed-off-by: Gabriel Krisman Bertazi krisman@collabora.com Co-developed-by: André Almeida andrealmeid@collabora.com Signed-off-by: André Almeida andrealmeid@collabora.com --- .../selftests/futex/functional/.gitignore | 1 + .../selftests/futex/functional/Makefile | 3 +- .../futex/functional/futex_wait_multiple.c | 173 ++++++++++++++++++ .../testing/selftests/futex/functional/run.sh | 3 + 4 files changed, 179 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/futex/functional/futex_wait_multiple.c
diff --git a/tools/testing/selftests/futex/functional/.gitignore b/tools/testing/selftests/futex/functional/.gitignore index a09f57061902..4660128a545e 100644 --- a/tools/testing/selftests/futex/functional/.gitignore +++ b/tools/testing/selftests/futex/functional/.gitignore @@ -5,3 +5,4 @@ futex_wait_private_mapped_file futex_wait_timeout futex_wait_uninitialized_heap futex_wait_wouldblock +futex_wait_multiple diff --git a/tools/testing/selftests/futex/functional/Makefile b/tools/testing/selftests/futex/functional/Makefile index 30996306cabc..75f9fface11f 100644 --- a/tools/testing/selftests/futex/functional/Makefile +++ b/tools/testing/selftests/futex/functional/Makefile @@ -14,7 +14,8 @@ TEST_GEN_FILES := \ futex_requeue_pi_signal_restart \ futex_requeue_pi_mismatched_ops \ futex_wait_uninitialized_heap \ - futex_wait_private_mapped_file + futex_wait_private_mapped_file \ + futex_wait_multiple
TEST_PROGS := run.sh
diff --git a/tools/testing/selftests/futex/functional/futex_wait_multiple.c b/tools/testing/selftests/futex/functional/futex_wait_multiple.c new file mode 100644 index 000000000000..b48422e79f42 --- /dev/null +++ b/tools/testing/selftests/futex/functional/futex_wait_multiple.c @@ -0,0 +1,173 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/****************************************************************************** + * + * Copyright © Collabora, Ltd., 2019 + * + * DESCRIPTION + * Test basic semantics of FUTEX_WAIT_MULTIPLE + * + * AUTHOR + * Gabriel Krisman Bertazi krisman@collabora.com + * + * HISTORY + * 2019-Dec-13: Initial version by Krisman krisman@collabora.com + * + *****************************************************************************/ + +#include <errno.h> +#include <getopt.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <pthread.h> +#include "futextest.h" +#include "logging.h" + +#define TEST_NAME "futex-wait-multiple" +#define timeout_ns 100000 +#define MAX_COUNT 128 +#define WAKE_WAIT_US 3000000 + +int ret = RET_PASS; +char *progname; +futex_t f[MAX_COUNT] = {0}; +struct futex_wait_block fwb[MAX_COUNT]; + +void usage(char *prog) +{ + printf("Usage: %s\n", prog); + printf(" -c Use color\n"); + printf(" -h Display this help message\n"); + printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n", + VQUIET, VCRITICAL, VINFO); +} + +void test_count_overflow(void) +{ + futex_t f = FUTEX_INITIALIZER; + struct futex_wait_block fwb[MAX_COUNT+1]; + int res, i; + + ksft_print_msg("%s: Test a too big number of futexes\n", progname); + + for (i = 0; i < MAX_COUNT+1; i++) { + fwb[i].uaddr = &f; + fwb[i].val = f; + fwb[i].bitset = 0; + } + + res = futex_wait_multiple(fwb, MAX_COUNT+1, NULL, FUTEX_PRIVATE_FLAG); + +#ifdef __ILP32__ + if (res != -1 || errno != ENOSYS) { + ksft_test_result_fail("futex_wait_multiple returned %d\n", + res < 0 ? errno : res); + ret = RET_FAIL; + } else { + ksft_test_result_skip("futex_wait_multiple not supported at x32\n"); + } +#else + if (res != -1 || errno != EINVAL) { + ksft_test_result_fail("futex_wait_multiple returned %d\n", + res < 0 ? errno : res); + ret = RET_FAIL; + } else { + ksft_test_result_pass("futex_wait_multiple count overflow succeed\n"); + } + +#endif /* __ILP32__ */ +} + +void *waiterfn(void *arg) +{ + int res; + + res = futex_wait_multiple(fwb, MAX_COUNT, NULL, FUTEX_PRIVATE_FLAG); + +#ifdef __ILP32__ + if (res != -1 || errno != ENOSYS) { + ksft_test_result_fail("futex_wait_multiple returned %d\n", + res < 0 ? errno : res); + ret = RET_FAIL; + } else { + ksft_test_result_skip("futex_wait_multiple not supported at x32\n"); + } +#else + if (res < 0) + ksft_print_msg("waiter failed %d\n", res); + + info("futex_wait_multiple: Got hint futex %d was freed\n", res); +#endif /* __ILP32__ */ + + return NULL; +} + +void test_fwb_wakeup(void) +{ + int res, i; + pthread_t waiter; + + ksft_print_msg("%s: Test wake up in a list of futex\n", progname); + + for (i = 0; i < MAX_COUNT; i++) { + fwb[i].uaddr = &f[i]; + fwb[i].val = f[i]; + fwb[i].bitset = 0xffffffff; + } + + res = pthread_create(&waiter, NULL, waiterfn, NULL); + if (res) { + ksft_test_result_fail("Creating waiting thread failed"); + ksft_exit_fail(); + } + + usleep(WAKE_WAIT_US); + res = futex_wake(&(f[MAX_COUNT-1]), 1, FUTEX_PRIVATE_FLAG); + if (res != 1) { + ksft_test_result_fail("Failed to wake thread res=%d\n", res); + ksft_exit_fail(); + } + + pthread_join(waiter, NULL); + ksft_test_result_pass("%s succeed\n", __func__); +} + +int main(int argc, char *argv[]) +{ + int c; + + while ((c = getopt(argc, argv, "cht:v:")) != -1) { + switch (c) { + case 'c': + log_color(1); + break; + case 'h': + usage(basename(argv[0])); + exit(0); + case 'v': + log_verbosity(atoi(optarg)); + break; + default: + usage(basename(argv[0])); + exit(1); + } + } + + progname = basename(argv[0]); + + ksft_print_header(); + ksft_set_plan(2); + + test_count_overflow(); + +#ifdef __ILP32__ + // if it's a 32x binary, there's no futex to wakeup + ksft_test_result_skip("futex_wait_multiple not supported at x32\n"); +#else + test_fwb_wakeup(); +#endif /* __ILP32__ */ + + ksft_print_cnts(); + return ret; +} diff --git a/tools/testing/selftests/futex/functional/run.sh b/tools/testing/selftests/futex/functional/run.sh index 1acb6ace1680..a8be94f28ff7 100755 --- a/tools/testing/selftests/futex/functional/run.sh +++ b/tools/testing/selftests/futex/functional/run.sh @@ -73,3 +73,6 @@ echo echo ./futex_wait_uninitialized_heap $COLOR ./futex_wait_private_mapped_file $COLOR + +echo +./futex_wait_multiple $COLOR