tracing · Maintained

Maintainers

• M Steven Rostedt <rostedt@goodmis.org>
• M Masami Hiramatsu <mhiramat@kernel.org>
• R Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Paths

• F Documentation/core-api/tracepoint.rst
• F Documentation/trace/*
• F fs/tracefs/
• F include/linux/trace*.h
• F include/trace/
• F kernel/trace/
• F kernel/tracepoint.c
• F scripts/tracing/
• F scripts/tracepoint-update.c
• F tools/testing/selftests/ftrace/

Last 30 days

Most active threads (last 7 days)

• WARM1d [PATCH v5 0/3] memcg,writeback: flush foreign bdev mappings separately
  2026-09-15 08:34 · 1 reply in 7d · Julian Sun <hidden>
• HOTtoday [PATCH v4 00/16] Remove PG_private by using page/folio->private checks instead
  2026-09-14 02:24 · 2 replies in 7d · Zi Yan <ziy@nvidia.com>
• WARM2d [PATCH v3] mm: vmscan: rework lru_shrink and write_folio tracepoints
  2026-09-14 07:24 · 0 replies in 7d · qiwu.chen (陈启武) <hidden>
• COOLING4d [PATCH v7 0/6] sched: Add support for long task name
  2026-09-12 01:24 · 2 replies in 7d · André Almeida <andrealmeid@igalia.com>
• HOTtoday [PATCH v2 0/3] mm/mglru: add tracepoints for scan and aging paths
  2026-09-11 10:30 · 2 replies in 7d · Ridong Chen <ridong.chen@linux.dev>
• COOLING5d [PATCH 0/5 v2] fs: Deferred inode reclaim
  2026-09-11 08:52 · 2 replies in 7d · Jan Kara <jack@suse.cz>
• WARM3d [PATCH 0/3] mm/mglru: add tracepoints for scan and aging paths
  2026-09-11 07:29 · 2 replies in 7d · Ridong Chen <ridong.chen@linux.dev>
• COOLING5d [PATCH v13 00/44] guest_memfd: In-place conversion support
  2026-09-10 23:55 · 2 replies in 7d · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• COOLING6d [PATCH v6 0/6] sched: Add support for long task name
  2026-09-10 16:49 · 2 replies in 7d · André Almeida <andrealmeid@igalia.com>
• COOLING5d [PATCH v3 00/15] sched: introduce for_each_process_rculock and for_each_thread_rculock
  2026-09-11 08:01 · 1 reply in 7d · Ye Liu <hidden>

Active reviewers (last 30 days)

• Lorenzo Stoakes (ARM) <ljs@kernel.org>
  6 attestations (5 Acked-by, 1 Reviewed-by) · last on 2026-09-11
• Shivank Garg <hidden>
  6 attestations (6 Tested-by) · last on 2026-09-10
• Fuad Tabba <hidden>
  6 attestations (6 Reviewed-by) · last on 2026-09-10
• Xiaoyao Li <hidden>
  6 attestations (6 Reviewed-by) · last on 2026-09-10
• Binbin Wu <hidden>
  6 attestations (6 Reviewed-by) · last on 2026-09-10
• Michal Hocko <mhocko@suse.com>
  3 attestations (3 Acked-by) · last on 2026-09-11
• David Hildenbrand (Arm) <david@kernel.org>
  3 attestations (3 Acked-by) · last on 2026-09-09
• SJ Park <sj@kernel.org>
  1 attestation (1 Reviewed-by) · last on 2026-09-11
• Oleg Nesterov <oleg@redhat.com>
  1 attestation (1 Reviewed-by) · last on 2026-09-11
• Marek Szyprowski <m.szyprowski@samsung.com>
  1 attestation (1 Suggested-by) · last on 2026-09-04

Recent patches

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

• DORMANTno replies [PATCH v5 3/3] writeback: record bdev targets in foreign writeback tracepoints
  2026-09-15 · Julian Sun <hidden>
• WARM2d [PATCH v3] mm: vmscan: rework lru_shrink and write_folio tracepoints
  2026-09-14 · qiwu.chen (陈启武) <hidden>
• HOTtoday [PATCH v4 16/16] mm/page-flags: remove PG_private
  2026-09-14 · Zi Yan <ziy@nvidia.com>
• HOTtoday [PATCH v4 10/16] mm/page-flags: check page/folio->private instead of PG_private
  2026-09-14 · Zi Yan <ziy@nvidia.com>
• COOLING4d [PATCH v7 4/6] sched: Extend task command name with TASK_COMM_EXT_LEN
  2026-09-12 · André Almeida <andrealmeid@igalia.com>
• COOLING4d [PATCH v7 2/6] treewide: Replace memcpy(..., current->comm) with copy_task_comm()
  2026-09-12 · André Almeida <andrealmeid@igalia.com>
• HOTtoday [PATCH v2 3/3] mm/mglru: add tracepoint for inc_max_seq()
  2026-09-11 · Ridong Chen <ridong.chen@linux.dev>
• HOTtoday [PATCH v2 2/3] mm/mglru: add tracepoint for scan_folios()
  2026-09-11 · Ridong Chen <ridong.chen@linux.dev>
• COOLING5d [PATCH v2 4/5] fs: Add throttling to deferred inode reclaim
  2026-09-11 · Jan Kara <jack@suse.cz>
• COOLING5d [PATCH v2 3/5] fs: Basic infrastructure for offloading inode reclaim
  2026-09-11 · Jan Kara <jack@suse.cz>
• COOLING5d REVIEWED: 16 (16M) [PATCH v3 11/15] tracing/fgraph: convert process/thread iterator to for_each_process_thread_rculock
  2026-09-11 · Ye Liu <hidden>
• WARM3d [PATCH 3/3] mm/mglru: add tracepoint for inc_max_seq()
  2026-09-11 · Ridong Chen <ridong.chen@linux.dev>
• WARM3d [PATCH 2/3] mm/mglru: add tracepoint for scan_folios()
  2026-09-11 · Ridong Chen <ridong.chen@linux.dev>
• COOLING5d REVIEWED: 4 (0M) [PATCH v13 04/44] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-09-10 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• COOLING5d REVIEWED: 4 (0M) [PATCH v13 06/44] KVM: Rename memory attribute APIs to prepare for in-place gmem conversion
  2026-09-10 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• HOTtoday [RFC PATCH v2 4/9] mm/damon: add damos_node_eligible_mem_bp tracepoint
  2026-09-10 · Ravi Jonnalagadda <hidden>
• COOLING6d [PATCH v6 4/6] sched: Extend task command name with TASK_COMM_EXT_LEN
  2026-09-10 · André Almeida <andrealmeid@igalia.com>
• COOLING6d [PATCH v6 2/6] treewide: Replace memcpy(..., current->comm) with copy_task_comm()
  2026-09-10 · André Almeida <andrealmeid@igalia.com>
• COOLING7d IN LINUX-NEXT: 25 (25M) [PATCH v5 3/3] mm: khugepaged: fix folio is used after folio_put/unlock()
  2026-09-09 · Vernon Yang <hidden>
• COOLING7d IN LINUX-NEXT: 25 (25M) [PATCH v5 2/3] mm: khugepaged: fix folio is used after pte_unmap_unlock()
  2026-09-09 · Vernon Yang <hidden>
• COOLING7d IN LINUX-NEXT: 16 (16M) [PATCH v5 1/3] mm: khugepaged: fix swap entry value to folio_pfn()
  2026-09-09 · Vernon Yang <hidden>
• COOLING7d [RFC PATCH 3/3] mm/vmscan: make kswapd wakeups NUMA load-aware
  2026-09-08 · Ehab Ababneh <hidden>
• WARM2d [PATCH v3 14/14] mm/page-flags: remove PG_private
  2026-09-08 · Zi Yan <ziy@nvidia.com>
• WARM2d [PATCH v3 10/14] mm/page-flags: introduce folio_test_fs_private()
  2026-09-08 · Zi Yan <ziy@nvidia.com>
• WARM2d [PATCH v3 09/14] mm/page-flags: check page/folio->private instead of PG_private
  2026-09-08 · Zi Yan <ziy@nvidia.com>
• COOLING6d REVIEWED: 4 (4M) [PATCH v2 5/8] kernel: convert process/thread iterators to for_each_*_rculock
  2026-09-07 · Ye Liu <hidden>
• COOLING7d [PATCH RFC 2/2] mm/mglru: add tracepoint for inc_max_seq
  2026-09-07 · Ridong Chen <ridong.chen@linux.dev>
• COOLING7d [PATCH RFC 1/2] mm/mglru: add tracepoint for folio isolation
  2026-09-07 · Ridong Chen <ridong.chen@linux.dev>
• COOLING12d [PATCH v22 03/10] mm: improve RSS counter approximation accuracy for proc interfaces
  2026-09-04 · Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
• COOLING6d [PATCH v6 09/12] dma-buf: heaps: Add support for Tegra VPR
  2026-09-04 · Thierry Reding <thierry.reding@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.

• DORMANTno replies REVIEWED: 15 (15M) [PATCH v5 2/2] mm: kick writeback flusher for IOCB_DONTCACHE with targeted dirty tracking
  2026-05-04 · Jeff Layton <jlayton@kernel.org> · 2 Reviewed-by
• STALE83d REVIEWED: 1 (0M) [PATCH v7 02/42] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-05-23 · Ackerley Tng <hidden> · 1 Reviewed-by
• COLD51d REVIEWED: 1 (0M) [PATCH v8 02/46] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org> · 1 Reviewed-by
• COLD56d REVIEWED: 3 (3M) [PATCH v7 08/29] netfs: Bulk load the readahead-provided folios up front
  2026-07-22 · David Howells <dhowells@redhat.com> · 1 Reviewed-by
• COLD37d REVIEWED: 4 (0M) [PATCH v9 02/41] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-07-29 · Ackerley Tng <hidden> · 3 Reviewed-by, 1 Tested-by
• COLD37d REVIEWED: 2 (0M) [PATCH v9 04/41] KVM: Rename memory attribute APIs to prepare for in-place gmem conversion
  2026-07-29 · Ackerley Tng <hidden> · 1 Reviewed-by, 1 Tested-by
• COLD20d REVIEWED: 4 (0M) [PATCH v10 03/41] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-08-07 · Ackerley Tng <hidden> · 3 Reviewed-by, 1 Tested-by
• COLD20d REVIEWED: 3 (0M) [PATCH v10 05/41] KVM: Rename memory attribute APIs to prepare for in-place gmem conversion
  2026-08-07 · Ackerley Tng <hidden> · 2 Reviewed-by, 1 Tested-by
• COLD19d REVIEWED: 4 (0M) [PATCH v11 06/46] KVM: Rename memory attribute APIs to prepare for in-place gmem conversion
  2026-08-26 · Ackerley Tng <hidden> · 3 Reviewed-by, 1 Tested-by
• COOLING7d REVIEWED: 4 (0M) [PATCH v12 04/45] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-08-31 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org> · 3 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.

• STALE86d [RFC PATCH v4 02/27] mm,cpuset: gate allocations from N_MEMORY_PRIVATE behind __GFP_PRIVATE
  2026-02-22 · Gregory Price <gourry@gourry.net>
• STALE202d [PATCH v2 4/4] mm: add tracepoints for zone lock
  2026-02-25 · Dmitry Ilvokhin <hidden>
• STALE184d [PATCH RFC 10/19] mm: add definitions for allocating unmapped pages
  2026-02-25 · Brendan Jackman <hidden>
• STALE201d [PATCH 04/61] ext4: update for u64 i_ino
  2026-02-26 · Jeff Layton <jlayton@kernel.org>
• STALE201d [PATCH 06/61] f2fs: update for u64 i_ino
  2026-02-26 · Jeff Layton <jlayton@kernel.org>
• STALE201d [PATCH v18 3/3] mm: Improve RSS counter approximation accuracy for proc interfaces
  2026-02-27 · Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
• STALE196d [PATCH v2 005/110] trace: store i_ino as u64 instead of ino_t/unsigned long
  2026-03-02 · Jeff Layton <jlayton@kernel.org>
• STALE196d [PATCH v2 006/110] trace: reorder TP_STRUCT__entry fields for better packing on 32-bit
  2026-03-02 · Jeff Layton <jlayton@kernel.org>
• STALE196d [PATCH v2 009/110] f2fs: use PRIino format for i_ino
  2026-03-02 · Jeff Layton <jlayton@kernel.org>
• STALE184d [PATCH v3 05/12] cachefiles: widen trace event i_ino fields to u64
  2026-03-04 · Jeff Layton <jlayton@kernel.org>