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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/rcu-doc-2.6 

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/rcu-doc-2.6:
  Doc: Fix spelling in RCU/rculist_nulls.txt.
  Doc: Fix wrong API example usage of call_rcu().
  Doc: Fix missing whitespaces in RCU documentation.
This commit is contained in:
Linus Torvalds 2009-04-03 09:50:14 -07:00
parent a0e0404fb0 edd4070f5d
commit 3e850509e1
3 changed files with 6 additions and 6 deletions
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6
Documentation/RCU/listRCU.txt
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@ -118,7 +118,7 @@ Following are the RCU equivalents for these two functions:
list_for_each_entry(e, list, list) { list_for_each_entry(e, list, list) {
if (!audit_compare_rule(rule, &e->rule)) { if (!audit_compare_rule(rule, &e->rule)) {
list_del_rcu(&e->list); list_del_rcu(&e->list);
call_rcu(&e->rcu, audit_free_rule, e); call_rcu(&e->rcu, audit_free_rule);
return 0; return 0;
} }
} }
@ -206,7 +206,7 @@ RCU ("read-copy update") its name. The RCU code is as follows:
ne->rule.action = newaction; ne->rule.action = newaction;
ne->rule.file_count = newfield_count; ne->rule.file_count = newfield_count;
list_replace_rcu(e, ne); list_replace_rcu(e, ne);
call_rcu(&e->rcu, audit_free_rule, e); call_rcu(&e->rcu, audit_free_rule);
return 0; return 0;
} }
} }
@ -283,7 +283,7 @@ flag under the spinlock as follows:
list_del_rcu(&e->list); list_del_rcu(&e->list);
e->deleted = 1; e->deleted = 1;
spin_unlock(&e->lock); spin_unlock(&e->lock);
call_rcu(&e->rcu, audit_free_rule, e); call_rcu(&e->rcu, audit_free_rule);
return 0; return 0;
} }
} }

2
Documentation/RCU/rcu.txt
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@ -81,7 +81,7 @@ o I hear that RCU needs work in order to support realtime kernels?
This work is largely completed. Realtime-friendly RCU can be This work is largely completed. Realtime-friendly RCU can be
enabled via the CONFIG_PREEMPT_RCU kernel configuration parameter. enabled via the CONFIG_PREEMPT_RCU kernel configuration parameter.
However, work is in progress for enabling priority boosting of However, work is in progress for enabling priority boosting of
preempted RCU read-side critical sections.This is needed if you preempted RCU read-side critical sections. This is needed if you
have CPU-bound realtime threads. have CPU-bound realtime threads.
o Where can I find more information on RCU? o Where can I find more information on RCU?

4
Documentation/RCU/rculist_nulls.txt
View File

@ -21,7 +21,7 @@ if (obj) {
/* /*
* Because a writer could delete object, and a writer could * Because a writer could delete object, and a writer could
* reuse these object before the RCU grace period, we * reuse these object before the RCU grace period, we
* must check key after geting the reference on object * must check key after getting the reference on object
*/ */
if (obj->key != key) { // not the object we expected if (obj->key != key) { // not the object we expected
put_ref(obj); put_ref(obj);
@ -117,7 +117,7 @@ a race (some writer did a delete and/or a move of an object
to another chain) checking the final 'nulls' value if to another chain) checking the final 'nulls' value if
the lookup met the end of chain. If final 'nulls' value the lookup met the end of chain. If final 'nulls' value
is not the slot number, then we must restart the lookup at is not the slot number, then we must restart the lookup at
the begining. If the object was moved to same chain, the beginning. If the object was moved to the same chain,
then the reader doesnt care : It might eventually then the reader doesnt care : It might eventually
scan the list again without harm. scan the list again without harm.