diff options
Diffstat (limited to 'Documentation/RCU/rcu.txt')
-rw-r--r-- | Documentation/RCU/rcu.txt | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/Documentation/RCU/rcu.txt b/Documentation/RCU/rcu.txt index 31852705b586..bf778332a28f 100644 --- a/Documentation/RCU/rcu.txt +++ b/Documentation/RCU/rcu.txt | |||
@@ -38,11 +38,11 @@ o How can the updater tell when a grace period has completed | |||
38 | 38 | ||
39 | Preemptible variants of RCU (CONFIG_TREE_PREEMPT_RCU) get the | 39 | Preemptible variants of RCU (CONFIG_TREE_PREEMPT_RCU) get the |
40 | same effect, but require that the readers manipulate CPU-local | 40 | same effect, but require that the readers manipulate CPU-local |
41 | counters. These counters allow limited types of blocking | 41 | counters. These counters allow limited types of blocking within |
42 | within RCU read-side critical sections. SRCU also uses | 42 | RCU read-side critical sections. SRCU also uses CPU-local |
43 | CPU-local counters, and permits general blocking within | 43 | counters, and permits general blocking within RCU read-side |
44 | RCU read-side critical sections. These two variants of | 44 | critical sections. These variants of RCU detect grace periods |
45 | RCU detect grace periods by sampling these counters. | 45 | by sampling these counters. |
46 | 46 | ||
47 | o If I am running on a uniprocessor kernel, which can only do one | 47 | o If I am running on a uniprocessor kernel, which can only do one |
48 | thing at a time, why should I wait for a grace period? | 48 | thing at a time, why should I wait for a grace period? |