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authorLinus Torvalds <torvalds@linux-foundation.org>2021-07-04 12:58:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-07-04 12:58:33 -0700
commit28e92f990337b8b4c5fdec47667f8b96089c503e (patch)
tree0dc55280883e7262d831ad24deb3a4fd2a56031a /Documentation/RCU
parentda803f82faa5ceeff34aa56c08ceba5384e44e47 (diff)
parent641faf1b9064c270a476a424e60063bb05df3ee9 (diff)
downloadlinux-28e92f990337b8b4c5fdec47667f8b96089c503e.tar.gz
Merge branch 'core-rcu-2021.07.04' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull RCU updates from Paul McKenney:

 - Bitmap parsing support for "all" as an alias for all bits

 - Documentation updates

 - Miscellaneous fixes, including some that overlap into mm and lockdep

 - kvfree_rcu() updates

 - mem_dump_obj() updates, with acks from one of the slab-allocator
   maintainers

 - RCU NOCB CPU updates, including limited deoffloading

 - SRCU updates

 - Tasks-RCU updates

 - Torture-test updates

* 'core-rcu-2021.07.04' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (78 commits)
  tasks-rcu: Make show_rcu_tasks_gp_kthreads() be static inline
  rcu-tasks: Make ksoftirqd provide RCU Tasks quiescent states
  rcu: Add missing __releases() annotation
  rcu: Remove obsolete rcu_read_unlock() deadlock commentary
  rcu: Improve comments describing RCU read-side critical sections
  rcu: Create an unrcu_pointer() to remove __rcu from a pointer
  srcu: Early test SRCU polling start
  rcu: Fix various typos in comments
  rcu/nocb: Unify timers
  rcu/nocb: Prepare for fine-grained deferred wakeup
  rcu/nocb: Only cancel nocb timer if not polling
  rcu/nocb: Delete bypass_timer upon nocb_gp wakeup
  rcu/nocb: Cancel nocb_timer upon nocb_gp wakeup
  rcu/nocb: Allow de-offloading rdp leader
  rcu/nocb: Directly call __wake_nocb_gp() from bypass timer
  rcu: Don't penalize priority boosting when there is nothing to boost
  rcu: Point to documentation of ordering guarantees
  rcu: Make rcu_gp_cleanup() be noinline for tracing
  rcu: Restrict RCU_STRICT_GRACE_PERIOD to at most four CPUs
  rcu: Make show_rcu_gp_kthreads() dump rcu_node structures blocking GP
  ...
Diffstat (limited to 'Documentation/RCU')
-rw-r--r--Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Memory-Ordering.rst6
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Memory-Ordering.rst b/Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Memory-Ordering.rst
index a648b423ba0e..11cdab037bff 100644
--- a/Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Memory-Ordering.rst
+++ b/Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Memory-Ordering.rst
@@ -21,7 +21,7 @@ Any code that happens after the end of a given RCU grace period is guaranteed
 to see the effects of all accesses prior to the beginning of that grace
 period that are within RCU read-side critical sections.
 Similarly, any code that happens before the beginning of a given RCU grace
-period is guaranteed to see the effects of all accesses following the end
+period is guaranteed to not see the effects of all accesses following the end
 of that grace period that are within RCU read-side critical sections.
 
 Note well that RCU-sched read-side critical sections include any region
@@ -339,14 +339,14 @@ The diagram below shows the path of ordering if the leftmost
 leftmost ``rcu_node`` structure offlines its last CPU and if the next
 ``rcu_node`` structure has no online CPUs).
 
-.. kernel-figure:: TreeRCU-gp-init-1.svg
+.. kernel-figure:: TreeRCU-gp-init-2.svg
 
 The final ``rcu_gp_init()`` pass through the ``rcu_node`` tree traverses
 breadth-first, setting each ``rcu_node`` structure's ``->gp_seq`` field
 to the newly advanced value from the ``rcu_state`` structure, as shown
 in the following diagram.
 
-.. kernel-figure:: TreeRCU-gp-init-1.svg
+.. kernel-figure:: TreeRCU-gp-init-3.svg
 
 This change will also cause each CPU's next call to
 ``__note_gp_changes()`` to notice that a new grace period has started,