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118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/*
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* This file is part of the SPL: Solaris Porting Layer.
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*
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* Copyright (c) 2008 Lawrence Livermore National Security, LLC.
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* Produced at Lawrence Livermore National Laboratory
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* Written by:
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* Brian Behlendorf <behlendorf1@llnl.gov>,
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* Herb Wartens <wartens2@llnl.gov>,
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* Jim Garlick <garlick@llnl.gov>
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* UCRL-CODE-235197
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "splat-internal.h"
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#define SPLAT_SUBSYSTEM_TIME 0x0800
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#define SPLAT_TIME_NAME "time"
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#define SPLAT_TIME_DESC "Kernel Time Tests"
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#define SPLAT_TIME_TEST1_ID 0x0801
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#define SPLAT_TIME_TEST1_NAME "time1"
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#define SPLAT_TIME_TEST1_DESC "HZ Test"
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#define SPLAT_TIME_TEST2_ID 0x0802
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#define SPLAT_TIME_TEST2_NAME "time2"
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#define SPLAT_TIME_TEST2_DESC "Monotonic Test"
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static int
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splat_time_test1(struct file *file, void *arg)
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{
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int myhz = hz;
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splat_vprint(file, SPLAT_TIME_TEST1_NAME, "hz is %d\n", myhz);
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return 0;
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}
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static int
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splat_time_test2(struct file *file, void *arg)
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{
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hrtime_t tm1, tm2;
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int i;
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tm1 = gethrtime();
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splat_vprint(file, SPLAT_TIME_TEST2_NAME, "time is %lld\n", tm1);
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for(i = 0; i < 100; i++) {
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tm2 = gethrtime();
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splat_vprint(file, SPLAT_TIME_TEST2_NAME, "time is %lld\n", tm2);
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if(tm1 > tm2) {
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splat_print(file, "%s: gethrtime() is not giving "
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"monotonically increasing values\n",
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SPLAT_TIME_TEST2_NAME);
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return 1;
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}
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tm1 = tm2;
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout(10);
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}
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return 0;
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}
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splat_subsystem_t *
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splat_time_init(void)
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{
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splat_subsystem_t *sub;
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sub = kmalloc(sizeof(*sub), GFP_KERNEL);
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if (sub == NULL)
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return NULL;
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memset(sub, 0, sizeof(*sub));
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strncpy(sub->desc.name, SPLAT_TIME_NAME, SPLAT_NAME_SIZE);
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strncpy(sub->desc.desc, SPLAT_TIME_DESC, SPLAT_DESC_SIZE);
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INIT_LIST_HEAD(&sub->subsystem_list);
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INIT_LIST_HEAD(&sub->test_list);
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spin_lock_init(&sub->test_lock);
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sub->desc.id = SPLAT_SUBSYSTEM_TIME;
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SPLAT_TEST_INIT(sub, SPLAT_TIME_TEST1_NAME, SPLAT_TIME_TEST1_DESC,
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SPLAT_TIME_TEST1_ID, splat_time_test1);
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SPLAT_TEST_INIT(sub, SPLAT_TIME_TEST2_NAME, SPLAT_TIME_TEST2_DESC,
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SPLAT_TIME_TEST2_ID, splat_time_test2);
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return sub;
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}
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void
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splat_time_fini(splat_subsystem_t *sub)
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{
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ASSERT(sub);
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SPLAT_TEST_FINI(sub, SPLAT_TIME_TEST2_ID);
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SPLAT_TEST_FINI(sub, SPLAT_TIME_TEST1_ID);
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kfree(sub);
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}
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int
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splat_time_id(void)
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{
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return SPLAT_SUBSYSTEM_TIME;
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}
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