73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2019 Linus Walleij <linus.walleij@linaro.org>
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*
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* Description:
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* Basic ioprio_set() test. Gets the current process I/O priority and
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* bumps it up one notch, then down two notches and checks that the
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* new priority is reported back correctly.
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*/
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#include <sys/types.h>
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#include <sys/syscall.h>
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#include "tst_test.h"
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#include "lapi/syscalls.h"
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#include "ioprio.h"
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static int orig_class;
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static int orig_prio;
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static void run(void)
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{
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int class = orig_class, prio = orig_prio;
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/* Bump prio to what it was + 1 */
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class = IOPRIO_CLASS_BE;
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prio = prio + 1;
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if (!prio_in_range(prio)) {
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tst_res(TCONF, "ioprio increase out of range (%d)", prio);
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goto second;
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}
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TEST(sys_ioprio_set(IOPRIO_WHO_PROCESS, 0,
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IOPRIO_PRIO_VALUE(class, prio)));
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if (TST_RET == -1)
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tst_res(TFAIL | TTERRNO, "ioprio_set failed");
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else
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ioprio_check_setting(class, prio, 1);
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second:
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/* Bump prio down two notches */
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prio = prio - 2;
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if (!prio_in_range(prio)) {
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tst_res(TCONF, "ioprio decrease out of range (%d)", prio);
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return;
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}
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TEST(sys_ioprio_set(IOPRIO_WHO_PROCESS, 0,
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IOPRIO_PRIO_VALUE(class, prio)));
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if (TST_RET == -1)
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tst_res(TFAIL | TTERRNO, "ioprio_set failed");
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else
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ioprio_check_setting(class, prio, 1);
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}
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static void setup(void)
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{
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/* Get the I/O priority for the current process */
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TEST(sys_ioprio_get(IOPRIO_WHO_PROCESS, 0));
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if (TST_RET == -1)
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tst_brk(TBROK | TTERRNO, "ioprio_get failed");
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orig_class = IOPRIO_PRIO_CLASS(TST_RET);
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orig_prio = IOPRIO_PRIO_LEVEL(TST_RET);
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tst_res(TINFO, "ioprio_get returned class %s prio %d",
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to_class_str[orig_class], orig_prio);
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}
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static struct tst_test test = {
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.setup = setup,
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.test_all = run,
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};
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