[PATCH 03/23] torture: Make torture_hrtimeout_ns() take an hrtimer mode parameter

Frederic Weisbecker
2023-10-10T11:59:53Z

The current torture-test sleeps are waiting for a duration, but there
are situations where it is better to wait for an absolute time, for
example, when ending a stutter interval. This commit therefore adds
an hrtimer mode parameter to torture_hrtimeout_ns(). Why not also the
other torture_hrtimeout_*() functions? The theory is that most absolute
times will be in nanoseconds, especially not (say) jiffies.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
---
include/linux/torture.h | 3 ++-
kernel/torture.c | 13 +++++++------
2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/include/linux/torture.h b/include/linux/torture.h
index bb466eec01e4..017f0f710815 100644
--- a/include/linux/torture.h
+++ b/include/linux/torture.h
@@ -81,7 +81,8 @@ static inline void torture_random_init(struct torture_random_state *trsp)
}

/* Definitions for high-resolution-timer sleeps. */
-int torture_hrtimeout_ns(ktime_t baset_ns, u32 fuzzt_ns, struct torture_random_state *trsp);
+int torture_hrtimeout_ns(ktime_t baset_ns, u32 fuzzt_ns, const enum hrtimer_mode mode,
+ struct torture_random_state *trsp);
int torture_hrtimeout_us(u32 baset_us, u32 fuzzt_ns, struct torture_random_state *trsp);
int torture_hrtimeout_ms(u32 baset_ms, u32 fuzzt_us, struct torture_random_state *trsp);
int torture_hrtimeout_jiffies(u32 baset_j, struct torture_random_state *trsp);
diff --git a/kernel/torture.c b/kernel/torture.c
index 68dba4ecab5c..6ba62e5993e7 100644
--- a/kernel/torture.c
+++ b/kernel/torture.c
@@ -87,14 +87,15 @@ EXPORT_SYMBOL_GPL(verbose_torout_sleep);
* nanosecond random fuzz. This function and its friends desynchronize
* testing from the timer wheel.
*/
-int torture_hrtimeout_ns(ktime_t baset_ns, u32 fuzzt_ns, struct torture_random_state *trsp)
+int torture_hrtimeout_ns(ktime_t baset_ns, u32 fuzzt_ns, const enum hrtimer_mode mode,
+ struct torture_random_state *trsp)
{
ktime_t hto = baset_ns;

if (trsp)
hto += torture_random(trsp) % fuzzt_ns;
set_current_state(TASK_IDLE);
- return schedule_hrtimeout(&hto, HRTIMER_MODE_REL);
+ return schedule_hrtimeout(&hto, mode);
}
EXPORT_SYMBOL_GPL(torture_hrtimeout_ns);

@@ -106,7 +107,7 @@ int torture_hrtimeout_us(u32 baset_us, u32 fuzzt_ns, struct torture_random_state
{
ktime_t baset_ns = baset_us * NSEC_PER_USEC;

- return torture_hrtimeout_ns(baset_ns, fuzzt_ns, trsp);
+ return torture_hrtimeout_ns(baset_ns, fuzzt_ns, HRTIMER_MODE_REL, trsp);
}
EXPORT_SYMBOL_GPL(torture_hrtimeout_us);

@@ -123,7 +124,7 @@ int torture_hrtimeout_ms(u32 baset_ms, u32 fuzzt_us, struct torture_random_state
fuzzt_ns = (u32)~0U;
else
fuzzt_ns = fuzzt_us * NSEC_PER_USEC;
- return torture_hrtimeout_ns(baset_ns, fuzzt_ns, trsp);
+ return torture_hrtimeout_ns(baset_ns, fuzzt_ns, HRTIMER_MODE_REL, trsp);
}
EXPORT_SYMBOL_GPL(torture_hrtimeout_ms);

@@ -136,7 +137,7 @@ int torture_hrtimeout_jiffies(u32 baset_j, struct torture_random_state *trsp)
{
ktime_t baset_ns = jiffies_to_nsecs(baset_j);

- return torture_hrtimeout_ns(baset_ns, jiffies_to_nsecs(1), trsp);
+ return torture_hrtimeout_ns(baset_ns, jiffies_to_nsecs(1), HRTIMER_MODE_REL, trsp);
}
EXPORT_SYMBOL_GPL(torture_hrtimeout_jiffies);

@@ -153,7 +154,7 @@ int torture_hrtimeout_s(u32 baset_s, u32 fuzzt_ms, struct torture_random_state *
fuzzt_ns = (u32)~0U;
else
fuzzt_ns = fuzzt_ms * NSEC_PER_MSEC;
- return torture_hrtimeout_ns(baset_ns, fuzzt_ns, trsp);
+ return torture_hrtimeout_ns(baset_ns, fuzzt_ns, HRTIMER_MODE_REL, trsp);
}
EXPORT_SYMBOL_GPL(torture_hrtimeout_s);

--
2.34.1