These are the latest RCU bits for v5.9:

  - kfree_rcu updates
  - RCU tasks updates
  - Read-side scalability tests
  - SRCU updates
  - Torture-test updates
  - Documentation updates
  - Miscellaneous fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu

Pull the v5.9 RCU bits from Paul E. McKenney:

 - Documentation updates
 - Miscellaneous fixes
 - kfree_rcu updates
 - RCU tasks updates
 - Read-side scalability tests
 - SRCU updates
 - Torture-test updates

Signed-off-by: Ingo Molnar <mingo@kernel.org>