69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2015 Cyril Hrubis <chrubis@suse.cz>
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*
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* futex_wake() returns 0 (0 woken up processes) when no processes wait on the mutex.
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*/
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#include <limits.h>
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#include "futextest.h"
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struct testcase {
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futex_t *f_addr;
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int nr_wake;
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int opflags;
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};
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static futex_t futex = FUTEX_INITIALIZER;
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static struct testcase testcases[] = {
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/* nr_wake = 0 is noop */
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{&futex, 0, 0},
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{&futex, 0, FUTEX_PRIVATE_FLAG},
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{&futex, 1, 0},
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{&futex, 1, FUTEX_PRIVATE_FLAG},
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{&futex, INT_MAX, 0},
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{&futex, INT_MAX, FUTEX_PRIVATE_FLAG},
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};
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static struct futex_test_variants variants[] = {
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#if (__NR_futex != __LTP__NR_INVALID_SYSCALL)
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{ .fntype = FUTEX_FN_FUTEX, .desc = "syscall with old kernel spec"},
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#endif
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#if (__NR_futex_time64 != __LTP__NR_INVALID_SYSCALL)
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{ .fntype = FUTEX_FN_FUTEX64, .desc = "syscall time64 with kernel spec"},
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#endif
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};
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static void run(unsigned int n)
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{
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struct futex_test_variants *tv = &variants[tst_variant];
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struct testcase *tc = &testcases[n];
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int res;
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res = futex_wake(tv->fntype, tc->f_addr, tc->nr_wake, tc->opflags);
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if (res != 0) {
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tst_res(TFAIL | TERRNO, "futex_wake() failed");
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return;
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}
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tst_res(TPASS, "futex_wake() passed");
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}
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static void setup(void)
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{
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struct futex_test_variants *tv = &variants[tst_variant];
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tst_res(TINFO, "Testing variant: %s", tv->desc);
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futex_supported_by_kernel(tv->fntype);
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}
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static struct tst_test test = {
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.setup = setup,
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.test = run,
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.tcnt = ARRAY_SIZE(testcases),
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.test_variants = ARRAY_SIZE(variants),
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};
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