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

Most active threads (last 7 days)

• WARM2d [PATCH v8 00/11] sched, steal_governor: Introduce cpu_preferred_mask and steal-driven vCPU backoff
  2026-07-20 17:24 · 1 reply in 7d · Shrikanth Hegde <hidden>

Recent patches

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

• WARM2d [PATCH v8 02/11] cpumask: Introduce cpu_preferred_mask
  2026-07-20 · Shrikanth Hegde <hidden>
• COOLING9d [PATCH v7 02/12] cpumask: Introduce cpu_preferred_mask
  2026-07-09 · Shrikanth Hegde <hidden>
• COOLING12d [PATCH v3 04/26] cpu: Annotate static information into meminspect
  2026-07-08 · Mukesh Ojha <hidden>
• COOLING11d [PATCH v19 26/40] cpu/hotplug: use a weaker annotation in AP thread
  2026-07-06 · Byungchul Park <byungchul@sk.com>
• COLD15d [PATCH v6 03/23] cpumask: Introduce cpu_preferred_mask
  2026-07-01 · Shrikanth Hegde <hidden>
• COLD24d [PATCH v5 04/24] cpumask: Introduce cpu_preferred_mask
  2026-06-25 · Shrikanth Hegde <hidden>
• COLD30d [PATCH v3 05/13] cpu/hotplug: Reserve CPUHP states for nohz_full and managed IRQ down-paths
  2026-06-18 · Jing Wu <hidden>
• COLD44d Re: [PATCH v3] cpu/hotplug: Fix NULL kobject warning in cpuhp_smt_enable()
  2026-06-03 · Jinjie Ruan <hidden>
• COLD52d [PATCH v6 09/22] mm: swap: allocate a virtual swap slot for each swapped out page
  2026-05-05 · Nhat Pham <nphamcs@gmail.com>
• COLD15d [PATCH 18/23] cpu/hotplug: Add a new cpuhp_offline_cb() API
  2026-04-21 · Waiman Long <longman@redhat.com>
• COLD15d [PATCH 10/23] cpu: Use RCU to protect access of HK_TYPE_TIMER cpumask
  2026-04-21 · Waiman Long <longman@redhat.com>
• STALE83d [PATCH v5 09/21] mm: swap: allocate a virtual swap slot for each swapped out page
  2026-03-20 · Nhat Pham <nphamcs@gmail.com>
• STALE126d [PATCH v4 09/21] mm: swap: allocate a virtual swap slot for each swapped out page
  2026-03-18 · Nhat Pham <nphamcs@gmail.com>
• STALE63d [PATCH v2 04/25] cpu: Annotate static information into meminspect
  2026-03-10 · Mukesh Ojha <hidden>
• STALE176d REVIEWED: 11 (8M) [PATCH v26 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-12-11 · Deepak Gupta via B4 Relay <devnull+debug.rivosinc.com@kernel.org>
• STALE224d REVIEWED: 11 (8M) [PATCH v25 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-12-05 · Deepak Gupta via B4 Relay <devnull+debug.rivosinc.com@kernel.org>
• STALE230d REVIEWED: 11 (8M) [PATCH v25 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-12-05 · Deepak Gupta <hidden>
• COLD18d [PATCH v18 26/42] cpu/hotplug: use a weaker annotation in AP thread
  2025-12-05 · Byungchul Park <byungchul@sk.com>
• STALE230d REVIEWED: 11 (8M) [PATCH v24 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-12-04 · Deepak Gupta <hidden>
• STALE183d [PATCH 04/26] cpu: Annotate static information into meminspect
  2025-11-19 · Eugen Hristev <hidden>
• COLD23d REVIEWED: 9 (8M) [PATCH v23 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-11-13 · Deepak Gupta via B4 Relay <devnull+debug.rivosinc.com@kernel.org>
• STALE254d REVIEWED: 9 (8M) [PATCH v22 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-10-23 · Deepak Gupta via B4 Relay <devnull+debug.rivosinc.com@kernel.org>
• STALE265d REVIEWED: 9 (8M) [PATCH v22 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-10-23 · Deepak Gupta <hidden>
• STALE274d REVIEWED: 9 (8M) [PATCH v22 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-10-22 · Deepak Gupta <hidden>
• STALE276d REVIEWED: 9 (8M) [PATCH v22 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-10-20 · Deepak Gupta <hidden>
• STALE276d REVIEWED: 9 (8M) [PATCH v22 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-10-20 · Deepak Gupta <hidden>
• STALE276d REVIEWED: 9 (8M) [PATCH v21 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-10-15 · Deepak Gupta <hidden>
• STALE280d REVIEWED: 9 (8M) [PATCH v20 13/28] prctl: arch-agnostic prctl for indirect branch tracking
  2025-10-13 · Deepak Gupta <hidden>
• STALE235d [PATCH v17 29/47] cpu/hotplug: use a weaker annotation in AP thread
  2025-10-02 · Byungchul Park <byungchul@sk.com>
• STALE349d [RFC PATCH 05/18] cpu/hotplug: Add a new cpuhp_offline_cb() API
  2025-08-08 · Waiman Long <longman@redhat.com>

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.

• STALE63d [PATCH v2 04/25] cpu: Annotate static information into meminspect
  2026-03-10 · Mukesh Ojha <hidden>
• STALE83d [PATCH v5 09/21] mm: swap: allocate a virtual swap slot for each swapped out page
  2026-03-20 · Nhat Pham <nphamcs@gmail.com>
• COLD52d [PATCH v6 09/22] mm: swap: allocate a virtual swap slot for each swapped out page
  2026-05-05 · Nhat Pham <nphamcs@gmail.com>