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| author | Zqiang <qiang.zhang1211@gmail.com> | 2023-11-03 15:26:39 +0800 |
|---|---|---|
| committer | Neeraj Upadhyay (AMD) <neeraj.iitr10@gmail.com> | 2023-11-23 11:58:18 +0530 |
| commit | 90f1015dfee3d33f8ca7bfe03296d100d465e385 (patch) | |
| tree | bf153873f47f2cadf5b216eee40e9c47328a8519 /kernel/rcu | |
| parent | af19a2526cba92082723b98fcf191a595054a952 (diff) | |
| download | linux-90f1015dfee3d33f8ca7bfe03296d100d465e385.tar.gz linux-90f1015dfee3d33f8ca7bfe03296d100d465e385.tar.bz2 linux-90f1015dfee3d33f8ca7bfe03296d100d465e385.zip | |
rcutorture: Add fqs_holdoff check before fqs_task is created
For rcutorture tests on RCU implementations that support
force-quiescent-state operations and that set the fqs_duration module
parameter greater than zero, the fqs_task kthread will be created.
However, if the fqs_holdoff module parameter is not set, then its default
value of zero will cause fqs_task enter a long-term busy loop until
stopped by kthread_stop(). This commit therefore adds a fqs_holdoff
check before the fqs_task is created, making sure that whenever the
fqs_task is created, the fqs_holdoff will be greater than zero.
Signed-off-by: Zqiang <qiang.zhang1211@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Neeraj Upadhyay (AMD) <neeraj.iitr10@gmail.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/rcutorture.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 30fc9d34e329..a0b2520bd32b 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -3872,7 +3872,9 @@ rcu_torture_init(void) } if (fqs_duration < 0) fqs_duration = 0; - if (fqs_duration) { + if (fqs_holdoff < 0) + fqs_holdoff = 0; + if (fqs_duration && fqs_holdoff) { /* Create the fqs thread */ firsterr = torture_create_kthread(rcu_torture_fqs, NULL, fqs_task); |