Commit 83684c4e4d62 for kernel

commit 83684c4e4d62cb02b2e4d0d18963d1035439278e
Merge: 4352b8aee980 9cc63f8bcd56
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Sun Aug 23 18:00:22 2026 -0700

    Merge tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

    Pull RCU updates from Paul McKenney:
     "Make expedited grace periods expedite normal RCU callbacks

      Miscellaneous fixes:
       - Improve diagnostic output with character task states
       - Mark accesses to inform KCSAN of concurrency design
       - Move from kmalloc() to kmalloc_obj()
       - Documentation updates
       - Improve handling of RCU deferred quiescent states
       - Clean up unused function arguments and structure fields
       - Reduce show_rcu_gp_kthreads() stack space

      Tasks RCU updates:
       - Clean up after SRCU re-implementation of Tasks Trace RCU
       - Mark accesses to inform KCSAN of concurrency design
       - Add ->lazy_timer status to diagnostic output
       - Remove an unnecessary memory barrier
       - Fix a data race, courtesy of KCSAN
       - Documentation updates
       - Convert cond_resched_tasks_rcu_qs() from macro to static inline
         function

      SRCU updates:
       - Add Rust helpers for SRCU
       - Avoid losing queued work at cleanup_srcu_struct() time

      Torture-test updates:
       - Preparation work for immediate RCU priority deboosting
       - Test RCU readers from real interrupt handlers (as opposed to
         softirq)
       - Simplify code through use of cpumask_next_wrap()
       - Improve diagnostic output with character task states
       - Add rcutorture.nwriters parameter to allow lightweight stall
         testing, and rcutorture.stall_only to make doing so easier
       - Test an RCU Tasks Trace grace period implying an RCU grace period
       - Make RCU Tasks Trace torturing track reader batches
       - Fix a data race, courtesy of KCSAN
       - Plug a shuffle_tmp_mask memory leak on kthread spawn failure"

    * tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (59 commits)
      rcu: Add closing parenthesis in comment in rcu_read_unlock_strict()
      rcutorture: Make {,s}rcu_read_delay() better handle forward-progress testing
      rcutorture: Announce declining to forward-progress test
      torture: Don't leak shuffle_tmp_mask when shuffler kthread fails to start
      rcutorture: Use this_cpu_inc() for rcu_torture_count[] and rcu_torture_batch[]
      rcutorture: Make RCU Tasks Trace track Reader Batches
      rcutorture: Test RCU Tasks Trace GP implying RCU GP
      rcutorture: Add a stall_only module parameter
      rcutorture: Add nwriters module parameter
      rcutorture: Use task_state_to_char() for task-state reporting
      rcutorture: Use cpumask_next_wrap() in rcu_torture_preempt()
      rcutorture: Test RCU readers from hardware interrupt handlers
      rcutorture: Check for immediate deboosting at reader end
      srcu: Queue sdp->work when the delay timer is successfully deleted
      rcu-tasks: Convert cond_resched_tasks_rcu_qs() to static inline
      rcu-tasks: Fix some comments for call_rcu_tasks() and call_rcu_tasks_rude()
      rcu-tasks: Rename tasks_rcu_exit_srcu_stall_timer to tasks_rcu_exit_stall_timer
      rcu: Mark interrupts-enabled accesses to rdp->cpu_no_qs.s
      rcu: Reduce stack usage in show_rcu_gp_kthreads()
      rcu: Mark accesses to ->rcu_urgent_qs and ->rcu_need_heavy_qs
      ...