Merge branch 'core-rcu-2021.07.04' of git://git.kernel.org/pub/scm/linux/kernel/git...

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
  ...

diff --cc Documentation/admin-guide/kernel-parameters.txt
Simple merge

diff --cc init/main.c
Simple merge

diff --cc kernel/locking/lockdep.c
Simple merge

diff --cc kernel/rcu/rcutorture.c
Simple merge

diff --cc kernel/rcu/tree.c
Simple merge

diff --cc kernel/rcu/tree_plugin.h
Simple merge

diff --cc kernel/rcu/tree_stall.h
index acb2288,f4152aa..3f937b2
--- 1/kernel/rcu/tree_stall.h
--- 2/kernel/rcu/tree_stall.h
+++ b/kernel/rcu/tree_stall.h
@@@ -734,21 -793,30 +793,30 @@@ void show_rcu_gp_kthreads(void
        j = jiffies;
        ja = j - data_race(rcu_state.gp_activity);
        jr = j - data_race(rcu_state.gp_req_activity);
+       js = j - data_race(rcu_state.gp_start);
        jw = j - data_race(rcu_state.gp_wake_time);
-       pr_info("%s: wait state: %s(%d) ->state: %#x delta ->gp_activity %lu ->gp_req_activity %lu ->gp_wake_time %lu ->gp_wake_seq %ld ->gp_seq %ld ->gp_seq_needed %ld ->gp_flags %#x\n",
+       pr_info("%s: wait state: %s(%d) ->state: %#lx ->rt_priority %u delta ->gp_start %lu ->gp_activity %lu ->gp_req_activity %lu ->gp_wake_time %lu ->gp_wake_seq %ld ->gp_seq %ld ->gp_seq_needed %ld ->gp_max %lu ->gp_flags %#x\n",
                rcu_state.name, gp_state_getname(rcu_state.gp_state),
-               rcu_state.gp_state, t ? t->__state : 0x1ffff,
-               ja, jr, jw, (long)data_race(rcu_state.gp_wake_seq),
 -              rcu_state.gp_state, t ? t->state : 0x1ffffL, t ? t->rt_priority : 0xffU,
++              rcu_state.gp_state, t ? t->__state : 0x1ffffL, t ? t->rt_priority : 0xffU,
+               js, ja, jr, jw, (long)data_race(rcu_state.gp_wake_seq),
                (long)data_race(rcu_state.gp_seq),
                (long)data_race(rcu_get_root()->gp_seq_needed),
+               data_race(rcu_state.gp_max),
                data_race(rcu_state.gp_flags));
        rcu_for_each_node_breadth_first(rnp) {
-               if (ULONG_CMP_GE(READ_ONCE(rcu_state.gp_seq),
-                                READ_ONCE(rnp->gp_seq_needed)))
+               if (ULONG_CMP_GE(READ_ONCE(rcu_state.gp_seq), READ_ONCE(rnp->gp_seq_needed)) &&
+                   !data_race(rnp->qsmask) && !data_race(rnp->boost_tasks) &&
+                   !data_race(rnp->exp_tasks) && !data_race(rnp->gp_tasks))
                        continue;
-               pr_info("\trcu_node %d:%d ->gp_seq %ld ->gp_seq_needed %ld\n",
-                       rnp->grplo, rnp->grphi, (long)data_race(rnp->gp_seq),
-                       (long)data_race(rnp->gp_seq_needed));
+               pr_info("\trcu_node %d:%d ->gp_seq %ld ->gp_seq_needed %ld ->qsmask %#lx %c%c%c%c ->n_boosts %ld\n",
+                       rnp->grplo, rnp->grphi,
+                       (long)data_race(rnp->gp_seq), (long)data_race(rnp->gp_seq_needed),
+                       data_race(rnp->qsmask),
+                       ".b"[!!data_race(rnp->boost_kthread_task)],
+                       ".B"[!!data_race(rnp->boost_tasks)],
+                       ".E"[!!data_race(rnp->exp_tasks)],
+                       ".G"[!!data_race(rnp->gp_tasks)],
+                       data_race(rnp->n_boosts));
                if (!rcu_is_leaf_node(rnp))
                        continue;
                for_each_leaf_node_possible_cpu(rnp, cpu) {

diff --cc kernel/time/timer.c
Simple merge

diff --cc mm/oom_kill.c
Simple merge

diff --cc mm/slab.h
Simple merge

diff --cc mm/slab_common.c
Simple merge

diff --cc mm/slub.c
Simple merge

diff --cc mm/util.c
Simple merge