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-rw-r--r--Documentation/locking/seqlock.rst21
1 files changed, 10 insertions, 11 deletions
diff --git a/Documentation/locking/seqlock.rst b/Documentation/locking/seqlock.rst
index a334b584f2b3..64405e5da63e 100644
--- a/Documentation/locking/seqlock.rst
+++ b/Documentation/locking/seqlock.rst
@@ -89,7 +89,7 @@ Read path::
.. _seqcount_locktype_t:
-Sequence counters with associated locks (``seqcount_LOCKTYPE_t``)
+Sequence counters with associated locks (``seqcount_LOCKNAME_t``)
-----------------------------------------------------------------
As discussed at :ref:`seqcount_t`, sequence count write side critical
@@ -115,27 +115,26 @@ The following sequence counters with associated locks are defined:
- ``seqcount_mutex_t``
- ``seqcount_ww_mutex_t``
-The plain seqcount read and write APIs branch out to the specific
-seqcount_LOCKTYPE_t implementation at compile-time. This avoids kernel
-API explosion per each new seqcount LOCKTYPE.
+The sequence counter read and write APIs can take either a plain
+seqcount_t or any of the seqcount_LOCKNAME_t variants above.
-Initialization (replace "LOCKTYPE" with one of the supported locks)::
+Initialization (replace "LOCKNAME" with one of the supported locks)::
/* dynamic */
- seqcount_LOCKTYPE_t foo_seqcount;
- seqcount_LOCKTYPE_init(&foo_seqcount, &lock);
+ seqcount_LOCKNAME_t foo_seqcount;
+ seqcount_LOCKNAME_init(&foo_seqcount, &lock);
/* static */
- static seqcount_LOCKTYPE_t foo_seqcount =
- SEQCNT_LOCKTYPE_ZERO(foo_seqcount, &lock);
+ static seqcount_LOCKNAME_t foo_seqcount =
+ SEQCNT_LOCKNAME_ZERO(foo_seqcount, &lock);
/* C99 struct init */
struct {
- .seq = SEQCNT_LOCKTYPE_ZERO(foo.seq, &lock),
+ .seq = SEQCNT_LOCKNAME_ZERO(foo.seq, &lock),
} foo;
Write path: same as in :ref:`seqcount_t`, while running from a context
-with the associated LOCKTYPE lock acquired.
+with the associated write serialization lock acquired.
Read path: same as in :ref:`seqcount_t`.