diff --git a/Documentation/RCU/Design/Requirements/Requirements.html b/Documentation/RCU/Design/Requirements/Requirements.html index 39bcb74ea733..21593496aca6 100644 --- a/Documentation/RCU/Design/Requirements/Requirements.html +++ b/Documentation/RCU/Design/Requirements/Requirements.html @@ -1480,7 +1480,7 @@ speed-of-light delays if nothing else.

Furthermore, uncertainty about external state is inherent in many cases. -For example, a pair of veternarians might use heartbeat to determine +For example, a pair of veterinarians might use heartbeat to determine whether or not a given cat was alive. But how long should they wait after the last heartbeat to decide that the cat is in fact dead? @@ -1489,9 +1489,9 @@ mean that a relaxed cat would be considered to cycle between death and life more than 100 times per minute. Moreover, just as with human beings, a cat's heart might stop for some period of time, so the exact wait period is a judgment call. -One of our pair of veternarians might wait 30 seconds before pronouncing +One of our pair of veterinarians might wait 30 seconds before pronouncing the cat dead, while the other might insist on waiting a full minute. -The two veternarians would then disagree on the state of the cat during +The two veterinarians would then disagree on the state of the cat during the final 30 seconds of the minute following the last heartbeat.

@@ -1945,7 +1945,7 @@ guard against mishaps and misuse:

  1. It is all too easy to forget to use rcu_read_lock() everywhere that it is needed, so kernels built with - CONFIG_PROVE_RCU=y will spat if + CONFIG_PROVE_RCU=y will splat if rcu_dereference() is used outside of an RCU read-side critical section. Update-side code can use rcu_dereference_protected(), @@ -2421,7 +2421,7 @@ However, there are some restrictions on the code placed within
  2. Blocking is prohibited. In practice, this is not a serious restriction given that idle tasks are prohibited from blocking to begin with. -
  3. Although nesting RCU_NONIDLE() is permited, they cannot +
  4. Although nesting RCU_NONIDLE() is permitted, they cannot nest indefinitely deeply. However, given that they can be nested on the order of a million deep, even on 32-bit systems, this should not be a serious @@ -2885,7 +2885,7 @@ APIs for defining and initializing srcu_struct structures.

    Tasks RCU

    -Some forms of tracing use “tramopolines” to handle the +Some forms of tracing use “trampolines” to handle the binary rewriting required to install different types of probes. It would be good to be able to free old trampolines, which sounds like a job for some form of RCU.