cpu hotplug · Maintained

Maintainers

• M Thomas Gleixner <tglx@kernel.org>
• M Peter Zijlstra <peterz@infradead.org>

Paths

• F include/linux/cpu.h
• F include/linux/cpuhotplug.h
• F include/linux/cpuhplock.h
• F include/linux/smpboot.h
• F kernel/cpu.c
• F kernel/smpboot.*
• F rust/helpers/cpu.c
• F rust/kernel/cpu.rs

Last 30 days

Recent patches

Most-recent 30 patches in this subsystem on rcu (capped at 30), ordered by date desc.

• WARM1d [PATCH v19 26/40] cpu/hotplug: use a weaker annotation in AP thread
  2026-07-06 · Byungchul Park <byungchul@sk.com>
• STALE69d [PATCH v3 05/13] cpu/hotplug: Reserve CPUHP states for nohz_full and managed IRQ down-paths
  2026-06-18 · Jing Wu <hidden>
• COLD33d REVIEWED: 2 (0M) [PATCH v5 1/1] cpuhp: Expedite RCU when toggling system-wide SMT mode
  2026-06-15 · Vishal Chourasia <hidden>
• STALE84d [PATCH v4 1/1] cpuhp: Expedite RCU when toggling system-wide SMT mode
  2026-05-07 · Vishal Chourasia <hidden>
• COLD53d [PATCH 18/23] cpu/hotplug: Add a new cpuhp_offline_cb() API
  2026-04-21 · Waiman Long <longman@redhat.com>
• COLD53d [PATCH 10/23] cpu: Use RCU to protect access of HK_TYPE_TIMER cpumask
  2026-04-21 · Waiman Long <longman@redhat.com>
• STALE156d [BUG] cgroups/cpusets: Spurious CPU-hotplug failures
  2026-03-18 · "Paul E. McKenney" <paulmck@kernel.org>
• STALE158d [PATCH v3 2/2] cpuhp: Expedite RCU grace periods during SMT operations
  2026-02-18 · Vishal Chourasia <hidden>
• STALE158d [PATCH v3 1/2] cpuhp: Optimize SMT switch operation by batching lock acquisition
  2026-02-18 · Vishal Chourasia <hidden>
• STALE196d [PATCH v2 1/2] cpuhp: Optimize SMT switch operation by batching lock acquisition
  2026-02-16 · Vishal Chourasia <hidden>
• STALE196d [PATCH v2 2/2] cpuhp: Expedite RCU grace periods during SMT operations
  2026-02-16 · Vishal Chourasia <hidden>
• STALE209d Re: [PATCH] cpuhp: Expedite synchronize_rcu during SMT switch
  2026-01-19 · Peter Zijlstra <peterz@infradead.org>
• STALE209d REVIEWED: 1 (0M) [RESEND] [PATCH] cpuhp: Expedite synchronize_rcu during SMT switch
  2026-01-19 · Vishal Chourasia <hidden>
• STALE209d REVIEWED: 1 (0M) [PATCH] cpuhp: Expedite synchronize_rcu during SMT switch
  2026-01-19 · Vishal Chourasia <hidden>
• STALE209d Re: [PATCH] cpuhp: Expedite synchronize_rcu during CPU hotplug operations
  2026-01-19 · Joel Fernandes <joelagnelf@nvidia.com>
• STALE209d [PATCH] cpuhp: Expedite synchronize_rcu during CPU hotplug operations
  2026-01-12 · Vishal Chourasia <hidden>
• COLD56d [PATCH v18 26/42] cpu/hotplug: use a weaker annotation in AP thread
  2025-12-05 · Byungchul Park <byungchul@sk.com>
• STALE273d [PATCH v17 29/47] cpu/hotplug: use a weaker annotation in AP thread
  2025-10-02 · Byungchul Park <byungchul@sk.com>
• STALE388d [RFC PATCH 05/18] cpu/hotplug: Add a new cpuhp_offline_cb() API
  2025-08-08 · Waiman Long <longman@redhat.com>
• STALE413d [PATCH v2] smp: Document preemption and stop_machine() mutual exclusion
  2025-07-05 · Joel Fernandes <joelagnelf@nvidia.com>
• DORMANTno replies [PATCH] smp: Document preemption and stop_machine() mutual exclusion
  2025-07-05 · Joel Fernandes <joelagnelf@nvidia.com>
• STALE516d Re: [PATCH v4] hrtimers: Force migrate away hrtimers queued after CPUHP_AP_HRTIMERS_DYING
  2025-03-26 · Frederic Weisbecker <frederic@kernel.org>
• STALE598d REVIEWED: 1 (0M) [PATCH 12/19] kthread: Default affine kthread to its preferred NUMA node
  2024-12-11 · Frederic Weisbecker <frederic@kernel.org>
• STALE630d REVIEWED: 1 (0M) [PATCH 14/21] kthread: Default affine kthread to its preferred NUMA node
  2024-11-12 · Frederic Weisbecker <frederic@kernel.org>
• STALE672d REVIEWED: 1 (0M) [PATCH 13/20] kthread: Default affine kthread to its preferred NUMA node
  2024-09-26 · Frederic Weisbecker <frederic@kernel.org>
• STALE712d REVIEWED: 1 (0M) [PATCH 12/19] kthread: Default affine kthread to its preferred NUMA node
  2024-09-16 · Frederic Weisbecker <frederic@kernel.org>
• STALE626d [PATCH 12/19] kthread: Default affine kthread to its preferred NUMA node
  2024-08-07 · Frederic Weisbecker <frederic@kernel.org>
• STALE755d [RFC PATCH 12/20] kthread: Implement preferred affinity
  2024-07-26 · Frederic Weisbecker <frederic@kernel.org>
• STALE825d [PATCH 5/6] cpumask: cleanup core headers inclusion
  2024-05-28 · Yury Norov <yury.norov@gmail.com>
• STALE1040d [PATCH 4/4] sched: Exclude CPU boot code from PF_IDLE area
  2023-10-24 · Frederic Weisbecker <frederic@kernel.org>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• COLD33d REVIEWED: 2 (0M) [PATCH v5 1/1] cpuhp: Expedite RCU when toggling system-wide SMT mode
  2026-06-15 · Vishal Chourasia <hidden> · 1 Reviewed-by, 1 Tested-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• WARM1d [PATCH v19 26/40] cpu/hotplug: use a weaker annotation in AP thread
  2026-07-06 · Byungchul Park <byungchul@sk.com>