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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2016-03-30 20:40:44 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2016-04-21 22:47:04 +0200 |
| commit | 0aa67e75b3d59cfe412bfa54ca23797e6c2e3270 (patch) | |
| tree | 8c6787bf8a2c7bba19f830ac87d67d245d4f8ee8 /kernel/rcu | |
| parent | rcutorture: Dump trace buffer upon shutdown (diff) | |
| download | linux-0aa67e75b3d59cfe412bfa54ca23797e6c2e3270.tar.xz linux-0aa67e75b3d59cfe412bfa54ca23797e6c2e3270.zip | |
rcutorture: Add irqs-disabled test for call_rcu()
Mutation testing carried out by Iftekhar Ahmed of Oregon State
University showed that rcutorture is failing to test invocations
of call_rcu() having interrupts disabled. This commit therefore
adds interrupt disabling around one of the existing invocations
of call_rcu() (and friends).
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/rcutorture.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 633a68a09440..084a28a732eb 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1478,7 +1478,9 @@ static int rcu_torture_barrier_cbs(void *arg) * The above smp_load_acquire() ensures barrier_phase load * is ordered before the folloiwng ->call(). */ + local_irq_disable(); /* Just to test no-irq call_rcu(). */ cur_ops->call(&rcu, rcu_torture_barrier_cbf); + local_irq_enable(); if (atomic_dec_and_test(&barrier_cbs_count)) wake_up(&barrier_wq); } while (!torture_must_stop()); |