48 lines
906 B
C
48 lines
906 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2019 FUJITSU LIMITED. All rights reserved.
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* Author: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
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*/
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/*
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* Test Description:
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* This is a timer sample test that timer slack is 200us.
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*/
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#include <errno.h>
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#include <sys/prctl.h>
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#include "lapi/prctl.h"
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#include "tst_timer_test.h"
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int sample_fn(int clk_id, long long usec)
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{
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struct timespec t = tst_timespec_from_us(usec);
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tst_timer_start(clk_id);
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TEST(nanosleep(&t, NULL));
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tst_timer_stop();
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tst_timer_sample();
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if (TST_RET != 0) {
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tst_res(TFAIL | TTERRNO,
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"nanosleep() returned %li", TST_RET);
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return 1;
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}
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return 0;
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}
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static void setup(void)
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{
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TEST(prctl(PR_SET_TIMERSLACK, 200000));
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if (TST_RET != 0)
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tst_brk(TBROK | TTERRNO,
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"prctl set timerslack 200us failed");
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}
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static struct tst_test test = {
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.setup = setup,
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.scall = "prctl()",
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.sample = sample_fn,
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};
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