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/*****************************************************************************\
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
* Copyright (C) 2007 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
* For details, see <http://zfsonlinux.org/>.
*
* The SPL is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* The SPL is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with the SPL. If not, see <http://www.gnu.org/licenses/>.
*****************************************************************************
* Solaris Porting LAyer Tests (SPLAT) Time Tests.
\*****************************************************************************/
#include <sys/time.h>
#include <linux/slab.h>
#include "splat-internal.h"
#define SPLAT_TIME_NAME "time"
#define SPLAT_TIME_DESC "Kernel Time Tests"
#define SPLAT_TIME_TEST1_ID 0x0801
#define SPLAT_TIME_TEST1_NAME "time1"
#define SPLAT_TIME_TEST1_DESC "HZ Test"
#define SPLAT_TIME_TEST2_ID 0x0802
#define SPLAT_TIME_TEST2_NAME "time2"
#define SPLAT_TIME_TEST2_DESC "Monotonic Test"
static int
splat_time_test1(struct file *file, void *arg)
{
int myhz = hz;
splat_vprint(file, SPLAT_TIME_TEST1_NAME, "hz is %d\n", myhz);
return 0;
}
static int
splat_time_test2(struct file *file, void *arg)
{
hrtime_t tm1, tm2;
int i;
tm1 = gethrtime();
splat_vprint(file, SPLAT_TIME_TEST2_NAME, "time is %lld\n", tm1);
for(i = 0; i < 100; i++) {
tm2 = gethrtime();
splat_vprint(file, SPLAT_TIME_TEST2_NAME, "time is %lld\n", tm2);
if(tm1 > tm2) {
splat_print(file, "%s: gethrtime() is not giving "
"monotonically increasing values\n",
SPLAT_TIME_TEST2_NAME);
return 1;
}
tm1 = tm2;
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(10);
}
return 0;
}
splat_subsystem_t *
splat_time_init(void)
{
splat_subsystem_t *sub;
sub = kmalloc(sizeof(*sub), GFP_KERNEL);
if (sub == NULL)
return NULL;
memset(sub, 0, sizeof(*sub));
strncpy(sub->desc.name, SPLAT_TIME_NAME, SPLAT_NAME_SIZE);
strncpy(sub->desc.desc, SPLAT_TIME_DESC, SPLAT_DESC_SIZE);
INIT_LIST_HEAD(&sub->subsystem_list);
INIT_LIST_HEAD(&sub->test_list);
spin_lock_init(&sub->test_lock);
sub->desc.id = SPLAT_SUBSYSTEM_TIME;
SPLAT_TEST_INIT(sub, SPLAT_TIME_TEST1_NAME, SPLAT_TIME_TEST1_DESC,
SPLAT_TIME_TEST1_ID, splat_time_test1);
SPLAT_TEST_INIT(sub, SPLAT_TIME_TEST2_NAME, SPLAT_TIME_TEST2_DESC,
SPLAT_TIME_TEST2_ID, splat_time_test2);
return sub;
}
void
splat_time_fini(splat_subsystem_t *sub)
{
ASSERT(sub);
SPLAT_TEST_FINI(sub, SPLAT_TIME_TEST2_ID);
SPLAT_TEST_FINI(sub, SPLAT_TIME_TEST1_ID);
kfree(sub);
}
int
splat_time_id(void)
{
return SPLAT_SUBSYSTEM_TIME;
}
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