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| author | Dietmar Eggemann <dietmar.eggemann@arm.com> | 2023-06-02 22:02:10 +0000 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-08-14 15:01:07 -0700 |
| commit | 5d248bb39fe1388943acb6510f8f48fa5570e0ec (patch) | |
| tree | 57c9dfa277a5cf58bfd9f4ef16daf220dc09a417 /kernel/torture.c | |
| parent | 67d5404d274376890d6d095a10e6565854918f8e (diff) | |
| download | linux-5d248bb39fe1388943acb6510f8f48fa5570e0ec.tar.gz linux-5d248bb39fe1388943acb6510f8f48fa5570e0ec.tar.bz2 linux-5d248bb39fe1388943acb6510f8f48fa5570e0ec.zip | |
torture: Add lock_torture writer_fifo module parameter
This commit adds a module parameter that causes the locktorture writer
to run at real-time priority.
To use it:
insmod /lib/modules/torture.ko random_shuffle=1
insmod /lib/modules/locktorture.ko torture_type=mutex_lock rt_boost=1 rt_boost_factor=50 nested_locks=3 writer_fifo=1
^^^^^^^^^^^^^
A predecessor to this patch has been helpful to uncover issues with the
proxy-execution series.
[ paulmck: Remove locktorture-specific code from kernel/torture.c. ]
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: kernel-team@android.com
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
[jstultz: Include header change to build, reword commit message]
Signed-off-by: John Stultz <jstultz@google.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/torture.c')
| -rw-r--r-- | kernel/torture.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/torture.c b/kernel/torture.c index b88a1a86d9da..a1ac493488e2 100644 --- a/kernel/torture.c +++ b/kernel/torture.c @@ -37,6 +37,7 @@ #include <linux/ktime.h> #include <asm/byteorder.h> #include <linux/torture.h> +#include <linux/sched/rt.h> #include "rcu/rcu.h" MODULE_LICENSE("GPL"); @@ -734,7 +735,7 @@ bool stutter_wait(const char *title) cond_resched_tasks_rcu_qs(); spt = READ_ONCE(stutter_pause_test); for (; spt; spt = READ_ONCE(stutter_pause_test)) { - if (!ret) { + if (!ret && !rt_task(current)) { sched_set_normal(current, MAX_NICE); ret = true; } |