[PATCH tip/core/rcu 09/17] torture: Make stutter use torture_hrtimeout_*() functions

paulmck
2021-01-06T17:19:11Z

This commit saves a few lines of code by making the stutter_wait()
and torture_stutter() functions use torture_hrtimeout_jiffies() and
torture_hrtimeout_us().

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
kernel/torture.c | 20 +++++---------------
1 file changed, 5 insertions(+), 15 deletions(-)

diff --git a/kernel/torture.c b/kernel/torture.c
index 7548634..7ad5c96 100644
--- a/kernel/torture.c
+++ b/kernel/torture.c
@@ -677,7 +677,6 @@ static int stutter_gap;
*/
bool stutter_wait(const char *title)
{
- ktime_t delay;
unsigned int i = 0;
bool ret = false;
int spt;
@@ -693,11 +692,8 @@ bool stutter_wait(const char *title)
schedule_timeout_interruptible(1);
} else if (spt == 2) {
while (READ_ONCE(stutter_pause_test)) {
- if (!(i++ & 0xffff)) {
- set_current_state(TASK_INTERRUPTIBLE);
- delay = 10 * NSEC_PER_USEC;
- schedule_hrtimeout(&delay, HRTIMER_MODE_REL);
- }
+ if (!(i++ & 0xffff))
+ torture_hrtimeout_us(10, 0, NULL);
cond_resched();
}
} else {
@@ -715,7 +711,6 @@ EXPORT_SYMBOL_GPL(stutter_wait);
*/
static int torture_stutter(void *arg)
{
- ktime_t delay;
DEFINE_TORTURE_RANDOM(rand);
int wtime;

@@ -726,20 +721,15 @@ static int torture_stutter(void *arg)
if (stutter > 2) {
WRITE_ONCE(stutter_pause_test, 1);
wtime = stutter - 3;
- delay = ktime_divns(NSEC_PER_SEC * wtime, HZ);
- delay += (torture_random(&rand) >> 3) % NSEC_PER_MSEC;
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_hrtimeout(&delay, HRTIMER_MODE_REL);
+ torture_hrtimeout_jiffies(wtime, &rand);
wtime = 2;
}
WRITE_ONCE(stutter_pause_test, 2);
- delay = ktime_divns(NSEC_PER_SEC * wtime, HZ);
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_hrtimeout(&delay, HRTIMER_MODE_REL);
+ torture_hrtimeout_jiffies(wtime, NULL);
}
WRITE_ONCE(stutter_pause_test, 0);
if (!torture_must_stop())
- schedule_timeout_interruptible(stutter_gap);
+ torture_hrtimeout_jiffies(stutter_gap, NULL);
torture_shutdown_absorb("torture_stutter");
} while (!torture_must_stop());
torture_kthread_stopping("torture_stutter");
--
2.9.5