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Test priority handling in epoch test.

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- Double the number of test threads to mp_ncpu*2
- Give each thread a different scheduling priority
This commit is contained in:
Matt Macy 2018-05-11 04:47:05 +00:00
parent 04de51dbab
commit ef7f29d8e6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=333479
1 changed files with 12 additions and 2 deletions
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14
sys/tests/epoch/epoch_test.c
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@ -38,6 +38,8 @@ __FBSDID("$FreeBSD$");
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/sched.h>
#include <sys/smp.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
@ -132,16 +134,24 @@ static struct epoch_test_instance etilist[MAXCPU];
static int
test_modinit(void)
{
int i, error;
struct thread *td;
int i, error, pri_range, pri_off;
pri_range = PRI_MIN_TIMESHARE - PRI_MIN_REALTIME;
test_epoch = epoch_alloc();
for (i = 0; i < mp_ncpus; i++) {
for (i = 0; i < mp_ncpus*2; i++) {
etilist[i].threadid = i;
error = kthread_add(testloop, &etilist[i], NULL, &testthreads[i],
0, 0, "epoch_test_%d", i);
if (error) {
printf("%s: kthread_add(epoch_test): error %d", __func__,
error);
} else {
pri_off = (i*4)%pri_range;
td = testthreads[i];
thread_lock(td);
sched_prio(td, PRI_MIN_REALTIME + pri_off);
thread_unlock(td);
}
}
inited = 1;