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| author | Paul E. McKenney <paulmck@kernel.org> | 2022-11-25 08:42:02 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-01-03 17:49:22 -0800 |
| commit | efa3c40cfac0777071e30383d209534e09ee454b (patch) | |
| tree | f365c91671b081b0e416353b8bfbd317c6ddad14 | |
| parent | 0b1182bde303dc476ea9712c2c816be2e4f0cf81 (diff) | |
rcu: Add test code for semaphore-like SRCU readers
This commit adds trivial test code for srcu_down_read() and
srcu_up_read().
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
| -rw-r--r-- | kernel/rcu/update.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c index a5b4abbee643..a72f98c120f0 100644 --- a/kernel/rcu/update.c +++ b/kernel/rcu/update.c @@ -555,9 +555,12 @@ struct early_boot_kfree_rcu { static void early_boot_test_call_rcu(void) { static struct rcu_head head; + int idx; static struct rcu_head shead; struct early_boot_kfree_rcu *rhp; + idx = srcu_down_read(&early_srcu); + srcu_up_read(&early_srcu, idx); call_rcu(&head, test_callback); early_srcu_cookie = start_poll_synchronize_srcu(&early_srcu); call_srcu(&early_srcu, &shead, test_callback); |