gpu buddy allocator · Maintained

Maintainers

• M Matthew Auld <matthew.auld@intel.com>
• M Arun Pravin <arunpravin.paneerselvam@amd.com>
• R Joel Fernandes <joelagnelf@nvidia.com>

Paths

• F drivers/gpu/buddy.c
• F drivers/gpu/drm/drm_buddy.c
• F drivers/gpu/tests/gpu_buddy_test.c
• F include/drm/drm_buddy.h
• F include/linux/gpu_buddy.h
• F rust/helpers/gpu.c
• F rust/kernel/gpu.rs
• F rust/kernel/gpu/

Last 30 days

Most active threads (last 7 days)

• HOTtoday REVIEWED: 3 (2M) [PATCH v2] gpu/buddy: bail out of try_harder when alignment cannot be honoured
  2026-07-09 13:11 · 0 replies in 7d · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• HOTtoday REVIEWED: 3 (2M) [PATCH v2] gpu/buddy: bail out of try_harder when alignment cannot be honoured
  2026-07-09 13:11 · 0 replies in 7d · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>

Active reviewers (last 30 days)

• Christian König <christian.koenig@amd.com>
  4 attestations (4 Suggested-by) · last on 2026-07-09
• Matthew Auld <matthew.auld@intel.com>
  2 attestations (2 Reviewed-by) · last on 2026-07-09
• John Olender <hidden>
  2 attestations (2 Tested-by) · last on 2026-07-09

Recent patches

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

• HOTtoday REVIEWED: 3 (2M) [PATCH v2] gpu/buddy: bail out of try_harder when alignment cannot be honoured
  2026-07-09 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• HOTtoday REVIEWED: 3 (2M) [PATCH v2] gpu/buddy: bail out of try_harder when alignment cannot be honoured
  2026-07-09 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• HOTtoday [PATCH v2] gpu/buddy: bail out of try_harder when alignment cannot be honoured
  2026-06-29 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• COOLING10d [PATCH] gpu/buddy: bail out of try_harder when alignment cannot be honoured
  2026-06-18 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• STALE85d Re: Linux 6.12.75
  2026-03-04 · Sasha Levin <sashal@kernel.org>
• DORMANTno replies Re: Linux 6.18.16
  2026-03-04 · Sasha Levin <sashal@kernel.org>
• DORMANTno replies Re: Linux 6.19.6
  2026-03-04 · Sasha Levin <sashal@kernel.org>
• DORMANTno replies REVIEWED: 3 (3M) FAILED: Patch "drm/buddy: Prevent BUG_ON by validating rounded allocation" failed to apply to 6.12-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org>
• STALE130d REVIEWED: 3 (3M) [PATCH 6.18 579/752] drm/buddy: Prevent BUG_ON by validating rounded allocation
  2026-02-28 · Sasha Levin <sashal@kernel.org>
• STALE121d REVIEWED: 3 (3M) [PATCH 6.19 648/844] drm/buddy: Prevent BUG_ON by validating rounded allocation
  2026-02-28 · Sasha Levin <sashal@kernel.org>
• STALE131d Re: Linux 6.19.4
  2026-02-26 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.18.14
  2026-02-26 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE122d REVIEWED: 3 (2M) [PATCH 6.18 204/641] drm/buddy: release free_trees array on buddy mm teardown
  2026-02-25 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE131d REVIEWED: 3 (2M) [PATCH 6.19 270/781] drm/buddy: release free_trees array on buddy mm teardown
  2026-02-25 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE135d REVIEWED: 4 (4M) [PATCH v3 1/3] gpu/buddy: fix module_init() usage
  2026-02-19 · Koen Koning <hidden>
• STALE169d REVIEWED: 3 (3M) [PATCH v2 1/2] drm/buddy: Prevent BUG_ON by validating rounded allocation
  2026-01-08 · Sanjay Yadav <hidden>
• DORMANTno replies Re: Linux 6.18.4
  2026-01-08 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.12.64
  2026-01-08 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE275d LANDED: 2 (2M) [PATCH v8 2/3] drm/buddy: Separate clear and dirty free block trees
  2025-10-06 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• STALE275d LANDED: 2 (2M) [PATCH v8 1/3] drm/buddy: Optimize free block management with RB tree
  2025-10-06 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• STALE278d [PATCH v7 2/3] drm/buddy: Separate clear and dirty free block trees
  2025-09-23 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• STALE278d [PATCH v7 1/3] drm/buddy: Optimize free block management with RB tree
  2025-09-23 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• STALE302d [PATCH v6 2/3] drm/buddy: Separate clear and dirty free block trees
  2025-09-09 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• STALE302d [PATCH v6 1/3] drm/buddy: Optimize free block management with RB tree
  2025-09-09 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• DORMANTno replies [PATCH v5 2/3] drm/buddy: Separate clear and dirty free block trees
  2025-09-09 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• STALE289d [PATCH v5 1/3] drm/buddy: Optimize free block management with RB tree
  2025-09-09 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• STALE310d [PATCH v5 2/2] drm/buddy: Separate clear and dirty free block trees
  2025-09-01 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• STALE303d [PATCH v5 1/2] drm/buddy: Optimize free block management with RB tree
  2025-09-01 · Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
• STALE342d Re: Linux 6.15.9
  2025-08-01 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.12.41
  2025-08-01 · Greg Kroah-Hartman <gregkh@linuxfoundation.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.

• STALE169d REVIEWED: 3 (3M) [PATCH v2 1/2] drm/buddy: Prevent BUG_ON by validating rounded allocation
  2026-01-08 · Sanjay Yadav <hidden> · 2 Reviewed-by
• STALE135d REVIEWED: 4 (4M) [PATCH v3 1/3] gpu/buddy: fix module_init() usage
  2026-02-19 · Koen Koning <hidden> · 1 Reviewed-by
• STALE130d REVIEWED: 3 (3M) [PATCH 6.18 579/752] drm/buddy: Prevent BUG_ON by validating rounded allocation
  2026-02-28 · Sasha Levin <sashal@kernel.org> · 2 Reviewed-by
• DORMANTno replies REVIEWED: 3 (3M) FAILED: Patch "drm/buddy: Prevent BUG_ON by validating rounded allocation" failed to apply to 6.12-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org> · 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 Re: Linux 6.12.64
  2026-01-08 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.18.4
  2026-01-08 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.18.14
  2026-02-26 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE131d Re: Linux 6.19.4
  2026-02-26 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.19.6
  2026-03-04 · Sasha Levin <sashal@kernel.org>
• DORMANTno replies Re: Linux 6.18.16
  2026-03-04 · Sasha Levin <sashal@kernel.org>