memory allocation profiling · Maintained

Maintainers

• M Suren Baghdasaryan <surenb@google.com>
• M Kent Overstreet <kent.overstreet@linux.dev>
• R Hao Ge <hao.ge@linux.dev>

Paths

• F Documentation/mm/allocation-profiling.rst
• F include/linux/alloc_tag.h
• F include/linux/pgalloc_tag.h
• F lib/alloc_tag.c

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v2 00/13] mm/slab, alloc_tag: reduce obj_ext memory waste
  2026-07-20 14:16 · 1 reply in 7d · "Vlastimil Babka (SUSE)" <vbabka@kernel.org>

Active reviewers (last 30 days)

• Hao Ge <hao.ge@linux.dev>
  4 attestations (3 Acked-by, 1 Tested-by) · last on 2026-07-08
• Vlastimil Babka (SUSE) <vbabka@kernel.org>
  1 attestation (1 Reviewed-by) · last on 2026-07-03

Recent patches

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

• HOTtoday [PATCH v2 01/13] mm/slab: skip kfence objects in allocation profiling
  2026-07-20 · "Vlastimil Babka (SUSE)" <vbabka@kernel.org>
• HOTtoday [PATCH slab/for-next-fixes v3 3/4] lib/alloc_tag: introduce mem_alloc_profiling_permanently_disabled()
  2026-07-13 · "Harry Yoo (Oracle)" <harry@kernel.org>
• COOLING11d IN LINUX-NEXT: 2 (2M) [PATCH v8 1/6] alloc_tag: add ioctl to /proc/allocinfo
  2026-07-08 · Abhishek Bapat <hidden>
• COOLING11d REVIEWED: 2 (2M) [PATCH v7 1/6] alloc_tag: add ioctl to /proc/allocinfo
  2026-07-06 · Abhishek Bapat <hidden>
• COOLING5d IN LINUX-NEXT: 13 (13M) [PATCH v5 15/18] mm: replace __GFP_NO_CODETAG with ALLOC_NO_CODETAG
  2026-07-03 · Brendan Jackman <jackmanb@google.com>
• COLD28d REVIEWED: 9 (9M) [PATCH v6 4/6] alloc_tag: add accuracy based filtering to ioctl
  2026-06-18 · Abhishek Bapat <hidden>
• COLD28d REVIEWED: 2 (2M) [PATCH v6 3/6] alloc_tag: add size-based filtering to ioctl
  2026-06-18 · Abhishek Bapat <hidden>
• COLD28d REVIEWED: 9 (9M) [PATCH v6 2/6] alloc_tag: add ioctl filters to /proc/allocinfo
  2026-06-18 · Abhishek Bapat <hidden>
• COLD28d REVIEWED: 2 (2M) [PATCH v6 1/6] alloc_tag: add ioctl to /proc/allocinfo
  2026-06-18 · Abhishek Bapat <hidden>
• COLD38d [PATCH v4 4/6] alloc_tag: add accuracy based filtering to ioctl
  2026-06-10 · Abhishek Bapat <hidden>
• COLD38d [PATCH v4 3/6] alloc_tag: add size-based filtering to ioctl
  2026-06-10 · Abhishek Bapat <hidden>
• COLD38d [PATCH v4 2/6] alloc_tag: add ioctl filters to /proc/allocinfo
  2026-06-10 · Abhishek Bapat <hidden>
• COLD38d [PATCH v4 1/6] alloc_tag: add ioctl to /proc/allocinfo
  2026-06-10 · Abhishek Bapat <hidden>
• COLD39d [PATCH RFC 15/15] mm: remove the __GFP_NO_OBJ_EXT flag
  2026-06-09 · "Vlastimil Babka (SUSE)" <vbabka@kernel.org>
• COLD40d Re: [PATCH v3 4/6] alloc_tag: add accuracy based filtering to ioctl
  2026-06-08 · Hao Ge <hao.ge@linux.dev>
• COLD40d [PATCH v3 4/6] alloc_tag: add accuracy based filtering to ioctl
  2026-06-05 · Abhishek Bapat <hidden>
• COLD40d [PATCH v3 3/6] alloc_tag: add size-based filtering to ioctl
  2026-06-05 · Abhishek Bapat <hidden>
• COLD40d [PATCH v3 2/6] alloc_tag: add ioctl filters to /proc/allocinfo
  2026-06-05 · Abhishek Bapat <hidden>
• COLD40d [PATCH v3 1/6] alloc_tag: add ioctl to /proc/allocinfo
  2026-06-05 · Abhishek Bapat <hidden>
• COLD44d IN MM [PATCH v2] alloc_tag: fix use-after-free in /proc/allocinfo after module unload
  2026-06-04 · Hao Ge <hao.ge@linux.dev>
• COLD46d [PATCH] alloc_tag: fix use-after-free in /proc/allocinfo after module unload
  2026-05-25 · Hao Ge <hao.ge@linux.dev>
• COLD42d [PATCH v2 4/6] alloc_tag: add accuracy based filtering to ioctl
  2026-05-22 · Abhishek Bapat <hidden>
• COLD42d [PATCH v2 3/6] alloc_tag: add size-based filtering to ioctl
  2026-05-22 · Abhishek Bapat <hidden>
• COLD42d [PATCH v2 2/6] alloc_tag: add ioctl filters to /proc/allocinfo
  2026-05-22 · Abhishek Bapat <hidden>
• COLD42d [PATCH v2 1/6] alloc_tag: add ioctl to /proc/allocinfo
  2026-05-22 · Abhishek Bapat <hidden>
• STALE69d Re: "alloc_tag was not set" when running mm/ksft_hmm.sh
  2026-05-12 · Alistair Popple <apopple@nvidia.com>
• STALE69d Re: "alloc_tag was not set" when running mm/ksft_hmm.sh
  2026-05-11 · Zenghui Yu <yuzenghui@huawei.com>
• COLD46d [PATCH 4/6] alloc_tag: add accuracy based filtering to ioctl
  2026-05-04 · Abhishek Bapat <hidden>
• COLD46d [PATCH 3/6] alloc_tag: add size-based filtering to ioctl
  2026-05-04 · Abhishek Bapat <hidden>
• COLD46d [PATCH 2/6] alloc_tag: add ioctl filters to /proc/allocinfo
  2026-05-04 · Abhishek Bapat <hidden>

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 [PATCH] mm/alloc_tag: replace fixed-size early PFN array with dynamic linked list
  2026-04-20 · Hao Ge <hao.ge@linux.dev>
• COLD46d [PATCH 4/6] alloc_tag: add accuracy based filtering to ioctl
  2026-05-04 · Abhishek Bapat <hidden>
• COLD42d [PATCH v2 4/6] alloc_tag: add accuracy based filtering to ioctl
  2026-05-22 · Abhishek Bapat <hidden>
• COLD39d [PATCH RFC 15/15] mm: remove the __GFP_NO_OBJ_EXT flag
  2026-06-09 · "Vlastimil Babka (SUSE)" <vbabka@kernel.org>