rdt - resource allocation · Supported

Maintainers

• M Tony Luck <tony.luck@intel.com>
• M Reinette Chatre <reinette.chatre@intel.com>
• R Dave Martin <Dave.Martin@arm.com>
• R James Morse <james.morse@arm.com>
• R Babu Moger <babu.moger@amd.com>

Paths

• F Documentation/filesystems/resctrl.rst
• F arch/x86/include/asm/resctrl.h
• F arch/x86/kernel/cpu/resctrl/
• F fs/resctrl/
• F include/linux/resctrl*.h
• F tools/testing/selftests/resctrl/

Last 30 days

Active reviewers (last 30 days)

• Reinette Chatre <reinette.chatre@intel.com>
  4 attestations (4 Reviewed-by) · last on 2026-07-09
• Ben Horgan <ben.horgan@arm.com>
  2 attestations (2 Reviewed-by) · last on 2026-07-09

Recent patches

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

• HOTtoday [PATCH 2/2] x86/resctrl: Fix ABMC counter programming for extended counter ranges
  2026-07-17 · Babu Moger <babu.moger@amd.com>
• HOTtoday [PATCH 1/2] x86/resctrl, Documentation: Keep mbm_assign_mode "default" on boot
  2026-07-17 · Babu Moger <babu.moger@amd.com>
• COLD16d [RFC PATCH 3/7] resctrl: Add a devices file for external requester assignment
  2026-07-14 · Zhanpeng Zhang <hidden>
• COLD21d Re: [RESEND PATCH v4 11/15] fs/resctrl: Program kernel-mode binding when CPU comes online
  2026-07-09 · Babu Moger <babu.moger@amd.com>
• COLD15d REVIEWED: 3 (3M) [PATCH v5 3/3] fs/resctrl: Factor MBA parse-time conversion to be per-arch
  2026-07-09 · Ben Horgan <ben.horgan@arm.com>
• COLD15d REVIEWED: 2 (2M) [PATCH v5 1/3] x86,fs/resctrl: Add resctrl_arch_preconvert_bw()
  2026-07-09 · Ben Horgan <ben.horgan@arm.com>
• COLD21d [RESEND PATCH v4 15/15] fs/resctrl: Add documentation on kernel_mode with example
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 14/15] fs/resctrl: Allow user space to write kmode_cpus/kmode_cpus_list
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 13/15] fs/resctrl: Add interface to modify kernel-mode via info/kernel_mode
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 12/15] fs/resctrl: Hide kmode_cpus[_list] on groups not bound to kernel-mode
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 11/15] fs/resctrl: Program kernel-mode binding when CPU comes online
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 10/15] fs/resctrl: Reset the kernel-mode binding when an rdtgroup is removed
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 09/15] fs/resctrl: Introduce kmode_cpus/kmode_cpus_list per rdtgroup
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 08/15] fs/resctrl: Add interface to display supported and active kernel-mode policy
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 07/15] x86/resctrl: Expose the supported PLZA kernel-mode policies during init
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 05/15] x86,fs/resctrl: Introduce architecture hooks to program kernel-mode
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 06/15] fs/resctrl: Introduce resctrl_set_kmode_support() to initialize supported modes
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 03/15] x86/resctrl: Add data structures and definitions for PLZA configuration
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d [RESEND PATCH v4 02/15] x86/resctrl: Add PLZA support to command-line options
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• DORMANTno replies [PATCH v4 06/15] fs/resctrl: Introduce resctrl_set_kmode_support() to initialize supported modes
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD23d [PATCH v4 05/15] x86,fs/resctrl: Introduce architecture hooks to program kernel-mode
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD23d [PATCH v4 03/15] x86/resctrl: Add data structures and definitions for PLZA configuration
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD23d [PATCH v4 02/15] x86/resctrl: Add PLZA support to command-line options
  2026-07-07 · Babu Moger <babu.moger@amd.com>
• COLD21d REVIEWED: 3 (3M) [PATCH v4 3/3] fs/resctrl: Factor MBA parse-time conversion to be per-arch
  2026-07-06 · Ben Horgan <ben.horgan@arm.com>
• COLD21d REVIEWED: 2 (2M) [PATCH v4 1/3] x86,fs/resctrl: Add resctrl_arch_preconvert_bw()
  2026-07-06 · Ben Horgan <ben.horgan@arm.com>
• COLD58d [PATCH RFC v6 04/18] fs/resctrl: Add resctrl_is_membw() helper
  2026-06-01 · Drew Fustini <fustini@kernel.org>
• COLD58d [PATCH RFC v6 05/18] fs/resctrl: Add RDT_RESOURCE_MB_MIN and RDT_RESOURCE_MB_WGHT
  2026-06-01 · Drew Fustini <fustini@kernel.org>
• STALE61d [PATCH RFC v5 04/18] fs/resctrl: Add resctrl_is_membw() helper
  2026-05-24 · Drew Fustini <fustini@kernel.org>
• STALE61d [PATCH RFC v5 05/18] fs/resctrl: Add RDT_RESOURCE_MB_MIN and RDT_RESOURCE_MB_WGHT
  2026-05-24 · Drew Fustini <fustini@kernel.org>
• COLD24d REVIEWED: 1 (1M) [PATCH v3 3/3] fs/resctrl: Factor MBA parse-time conversion to be per-arch
  2026-05-15 · Ben Horgan <ben.horgan@arm.com>

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.

• COLD15d REVIEWED: 3 (3M) [PATCH v5 3/3] fs/resctrl: Factor MBA parse-time conversion to be per-arch
  2026-07-09 · Ben Horgan <ben.horgan@arm.com> · 2 Reviewed-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.

• DORMANTno replies [RFC PATCH] x86,fs/resctrl: Add support for Global Bandwidth Enforcement (GLBE)
  2026-01-21 · Babu Moger <babu.moger@amd.com>
• STALE156d [RFC PATCH 02/19] x86,fs/resctrl: Add the resource for Global Memory Bandwidth Allocation
  2026-01-21 · Babu Moger <babu.moger@amd.com>
• STALE156d [RFC PATCH 05/19] x86,fs/resctrl: Add support for Global Slow Memory Bandwidth Allocation (GSMBA)
  2026-01-21 · Babu Moger <babu.moger@amd.com>
• STALE156d [RFC PATCH 06/19] x86,fs/resctrl: Add the resource for Global Slow Memory Bandwidth Enforcement(GLSBE)
  2026-01-21 · Babu Moger <babu.moger@amd.com>
• STALE156d [RFC PATCH 07/19] fs/resctrl: Add the documentation for Global Slow Memory Bandwidth Allocation
  2026-01-21 · Babu Moger <babu.moger@amd.com>
• STALE156d [RFC PATCH 08/19] x86/resctrl: Support Privilege-Level Zero Association (PLZA)
  2026-01-21 · Babu Moger <babu.moger@amd.com>
• STALE156d [RFC PATCH 10/19] fs/resctrl: Expose plza_capable via control info file
  2026-01-21 · Babu Moger <babu.moger@amd.com>
• STALE156d [RFC PATCH 11/19] resctrl: Introduce PLZA static key enable/disable helpers
  2026-01-21 · Babu Moger <babu.moger@amd.com>
• STALE156d [RFC PATCH 12/19] x86/resctrl: Add data structures and definitions for PLZA configuration
  2026-01-21 · Babu Moger <babu.moger@amd.com>
• STALE156d [RFC PATCH 15/19] fs/resctrl: Introduce PLZA attribute in rdtgroup interface
  2026-01-21 · Babu Moger <babu.moger@amd.com>