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| author | Ingo Molnar <mingo@kernel.org> | 2014-07-16 13:49:15 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-07-17 11:34:01 +0200 |
| commit | 01c9db827146ce321562a992a5dbc1a49b1a99ce (patch) | |
| tree | 2014c68991343e5b7ddf0408c2527ff08038e08d /Documentation/RCU/rcuref.txt | |
| parent | 1795cd9b3a91d4b5473c97f491d63892442212ab (diff) | |
| parent | 187497fa5e9e9383820d33e48b87f8200a747c2a (diff) | |
Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:
* Update RCU documentation.
* Miscellaneous fixes.
* Maintainership changes.
* Torture-test updates.
* Callback-offloading changes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/RCU/rcuref.txt')
| -rw-r--r-- | Documentation/RCU/rcuref.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/RCU/rcuref.txt b/Documentation/RCU/rcuref.txt index 141d531aa14b..613033ff2b9b 100644 --- a/Documentation/RCU/rcuref.txt +++ b/Documentation/RCU/rcuref.txt @@ -1,5 +1,14 @@ Reference-count design for elements of lists/arrays protected by RCU. + +Please note that the percpu-ref feature is likely your first +stop if you need to combine reference counts and RCU. Please see +include/linux/percpu-refcount.h for more information. However, in +those unusual cases where percpu-ref would consume too much memory, +please read on. + +------------------------------------------------------------------------ + Reference counting on elements of lists which are protected by traditional reader/writer spinlocks or semaphores are straightforward: |