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#include <splat-ctl.h>
#define KZT_SUBSYSTEM_TASKQ 0x0200
#define KZT_TASKQ_NAME "taskq"
#define KZT_TASKQ_DESC "Kernel Task Queue Tests"
#define KZT_TASKQ_TEST1_ID 0x0201
#define KZT_TASKQ_TEST1_NAME "single"
#define KZT_TASKQ_TEST1_DESC "Single task queue, single task"
#define KZT_TASKQ_TEST2_ID 0x0202
#define KZT_TASKQ_TEST2_NAME "multiple"
#define KZT_TASKQ_TEST2_DESC "Multiple task queues, multiple tasks"
typedef struct kzt_taskq_arg {
int flag;
int id;
struct file *file;
const char *name;
} kzt_taskq_arg_t;
/* Validation Test 1 - Create a taskq, queue a task, wait until
* task completes, ensure task ran properly, cleanup taskq,
*/
static void
kzt_taskq_test1_func(void *arg)
{
kzt_taskq_arg_t *tq_arg = (kzt_taskq_arg_t *)arg;
ASSERT(tq_arg);
kzt_vprint(tq_arg->file, KZT_TASKQ_TEST1_NAME,
"Taskq '%s' function '%s' setting flag\n",
tq_arg->name, sym2str(kzt_taskq_test1_func));
tq_arg->flag = 1;
}
static int
kzt_taskq_test1(struct file *file, void *arg)
{
taskq_t *tq;
taskqid_t id;
kzt_taskq_arg_t tq_arg;
kzt_vprint(file, KZT_TASKQ_TEST1_NAME, "Taskq '%s' creating\n",
KZT_TASKQ_TEST1_NAME);
if ((tq = taskq_create(KZT_TASKQ_TEST1_NAME, 1, 0, 0, 0, 0)) == NULL) {
kzt_vprint(file, KZT_TASKQ_TEST1_NAME,
"Taskq '%s' create failed\n",
KZT_TASKQ_TEST1_NAME);
return -EINVAL;
}
tq_arg.flag = 0;
tq_arg.id = 0;
tq_arg.file = file;
tq_arg.name = KZT_TASKQ_TEST1_NAME;
kzt_vprint(file, KZT_TASKQ_TEST1_NAME,
"Taskq '%s' function '%s' dispatching\n",
tq_arg.name, sym2str(kzt_taskq_test1_func));
if ((id = taskq_dispatch(tq, kzt_taskq_test1_func, &tq_arg, 0)) == 0) {
kzt_vprint(file, KZT_TASKQ_TEST1_NAME,
"Taskq '%s' function '%s' dispatch failed\n",
tq_arg.name, sym2str(kzt_taskq_test1_func));
taskq_destory(tq);
return -EINVAL;
}
kzt_vprint(file, KZT_TASKQ_TEST1_NAME, "Taskq '%s' waiting\n",
tq_arg.name);
taskq_wait(tq);
kzt_vprint(file, KZT_TASKQ_TEST1_NAME, "Taskq '%s' destroying\n",
tq_arg.name);
taskq_destory(tq);
return (tq_arg.flag) ? 0 : -EINVAL;
}
/* Validation Test 2 - Create multiple taskq's, each with multiple tasks,
* wait until all tasks complete, ensure all tasks ran properly and in the
* the correct order, cleanup taskq's
*/
static void
kzt_taskq_test2_func1(void *arg)
{
kzt_taskq_arg_t *tq_arg = (kzt_taskq_arg_t *)arg;
ASSERT(tq_arg);
kzt_vprint(tq_arg->file, KZT_TASKQ_TEST2_NAME,
"Taskq '%s/%d' function '%s' flag = %d = %d * 2\n",
tq_arg->name, tq_arg->id,
sym2str(kzt_taskq_test2_func1),
tq_arg->flag * 2, tq_arg->flag);
tq_arg->flag *= 2;
}
static void
kzt_taskq_test2_func2(void *arg)
{
kzt_taskq_arg_t *tq_arg = (kzt_taskq_arg_t *)arg;
ASSERT(tq_arg);
kzt_vprint(tq_arg->file, KZT_TASKQ_TEST2_NAME,
"Taskq '%s/%d' function '%s' flag = %d = %d + 1\n",
tq_arg->name, tq_arg->id,
sym2str(kzt_taskq_test2_func2),
tq_arg->flag + 1, tq_arg->flag);
tq_arg->flag += 1;
}
#define TEST2_TASKQS 8
static int
kzt_taskq_test2(struct file *file, void *arg) {
taskq_t *tq[TEST2_TASKQS] = { NULL };
taskqid_t id;
kzt_taskq_arg_t tq_args[TEST2_TASKQS];
int i, rc = 0;
for (i = 0; i < TEST2_TASKQS; i++) {
kzt_vprint(file, KZT_TASKQ_TEST2_NAME, "Taskq '%s/%d' "
"creating\n", KZT_TASKQ_TEST2_NAME, i);
if ((tq[i] = taskq_create(KZT_TASKQ_TEST2_NAME,
1, 0, 0, 0, 0)) == NULL) {
kzt_vprint(file, KZT_TASKQ_TEST2_NAME,
"Taskq '%s/%d' create failed\n",
KZT_TASKQ_TEST2_NAME, i);
rc = -EINVAL;
break;
}
tq_args[i].flag = i;
tq_args[i].id = i;
tq_args[i].file = file;
tq_args[i].name = KZT_TASKQ_TEST2_NAME;
kzt_vprint(file, KZT_TASKQ_TEST2_NAME,
"Taskq '%s/%d' function '%s' dispatching\n",
tq_args[i].name, tq_args[i].id,
sym2str(kzt_taskq_test2_func1));
if ((id = taskq_dispatch(
tq[i], kzt_taskq_test2_func1, &tq_args[i], 0)) == 0) {
kzt_vprint(file, KZT_TASKQ_TEST2_NAME,
"Taskq '%s/%d' function '%s' dispatch "
"failed\n", tq_args[i].name, tq_args[i].id,
sym2str(kzt_taskq_test2_func1));
rc = -EINVAL;
break;
}
kzt_vprint(file, KZT_TASKQ_TEST2_NAME,
"Taskq '%s/%d' function '%s' dispatching\n",
tq_args[i].name, tq_args[i].id,
sym2str(kzt_taskq_test2_func2));
if ((id = taskq_dispatch(
tq[i], kzt_taskq_test2_func2, &tq_args[i], 0)) == 0) {
kzt_vprint(file, KZT_TASKQ_TEST2_NAME,
"Taskq '%s/%d' function '%s' dispatch failed\n",
tq_args[i].name, tq_args[i].id,
sym2str(kzt_taskq_test2_func2));
rc = -EINVAL;
break;
}
}
/* When rc is set we're effectively just doing cleanup here, so
* ignore new errors in that case. They just cause noise. */
for (i = 0; i < TEST2_TASKQS; i++) {
if (tq[i] != NULL) {
kzt_vprint(file, KZT_TASKQ_TEST2_NAME,
"Taskq '%s/%d' waiting\n",
tq_args[i].name, tq_args[i].id);
taskq_wait(tq[i]);
kzt_vprint(file, KZT_TASKQ_TEST2_NAME,
"Taskq '%s/%d; destroying\n",
tq_args[i].name, tq_args[i].id);
taskq_destory(tq[i]);
if (!rc && tq_args[i].flag != ((i * 2) + 1)) {
kzt_vprint(file, KZT_TASKQ_TEST2_NAME,
"Taskq '%s/%d' processed tasks "
"out of order; %d != %d\n",
tq_args[i].name, tq_args[i].id,
tq_args[i].flag, i * 2 + 1);
rc = -EINVAL;
} else {
kzt_vprint(file, KZT_TASKQ_TEST2_NAME,
"Taskq '%s/%d' processed tasks "
"in the correct order; %d == %d\n",
tq_args[i].name, tq_args[i].id,
tq_args[i].flag, i * 2 + 1);
}
}
}
return rc;
}
kzt_subsystem_t *
kzt_taskq_init(void)
{
kzt_subsystem_t *sub;
sub = kmalloc(sizeof(*sub), GFP_KERNEL);
if (sub == NULL)
return NULL;
memset(sub, 0, sizeof(*sub));
strncpy(sub->desc.name, KZT_TASKQ_NAME, KZT_NAME_SIZE);
strncpy(sub->desc.desc, KZT_TASKQ_DESC, KZT_DESC_SIZE);
INIT_LIST_HEAD(&sub->subsystem_list);
INIT_LIST_HEAD(&sub->test_list);
spin_lock_init(&sub->test_lock);
sub->desc.id = KZT_SUBSYSTEM_TASKQ;
KZT_TEST_INIT(sub, KZT_TASKQ_TEST1_NAME, KZT_TASKQ_TEST1_DESC,
KZT_TASKQ_TEST1_ID, kzt_taskq_test1);
KZT_TEST_INIT(sub, KZT_TASKQ_TEST2_NAME, KZT_TASKQ_TEST2_DESC,
KZT_TASKQ_TEST2_ID, kzt_taskq_test2);
return sub;
}
void
kzt_taskq_fini(kzt_subsystem_t *sub)
{
ASSERT(sub);
KZT_TEST_FINI(sub, KZT_TASKQ_TEST2_ID);
KZT_TEST_FINI(sub, KZT_TASKQ_TEST1_ID);
kfree(sub);
}
int
kzt_taskq_id(void) {
return KZT_SUBSYSTEM_TASKQ;
}
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