Active subsystems in bpf

100 subsystems with patch activity in the last 7 days, busiest first. Each links to its own dashboard: recent patches, active threads and reviewers for the paths that subsystem claims in MAINTAINERS.

• bpf [general] (safe dynamic programs and tools) Supported
  181 messages in 7d · last 2026-10-04 08:21 · Alexei Starovoitov et al.
• kernel selftest framework
  96 messages in 7d · last 2026-10-03 20:33 · Shuah Khan et al.
• bpf [selftests] (test runners & infrastructure)
  82 messages in 7d · last 2026-10-03 20:33 · Andrii Nakryiko et al.
• networking [general]
  57 messages in 7d · last 2026-10-04 08:21 · "David S. Miller" et al.
• networking drivers
  45 messages in 7d · last 2026-10-03 01:37 · Andrew Lunn et al.
• bpf [core]
  35 messages in 7d · last 2026-10-02 12:47 · Alexei Starovoitov et al.
• memory management
  25 messages in 7d · last 2026-10-03 16:46 · Andrew Morton
• bpf [library] (libbpf)
  19 messages in 7d · last 2026-10-03 19:44 · Andrii Nakryiko et al.
• memory management - core
  18 messages in 7d · last 2026-10-03 16:45 · Andrew Morton et al.
• memory mapping
  16 messages in 7d · last 2026-10-03 16:45 · Andrew Morton et al.
• tracing
  13 messages in 7d · last 2026-10-03 12:41 · Steven Rostedt et al.
• intel ethernet drivers
  13 messages in 7d · last 2026-10-02 13:09 · Tony Nguyen et al.
• runtime verification (rv)
  13 messages in 7d · last 2026-10-01 15:22 · Steven Rostedt et al.
• documentation
  12 messages in 7d · last 2026-10-03 16:35 · Jonathan Corbet
• arm64 port (aarch64 architecture)
  11 messages in 7d · last 2026-10-03 16:43 · Catalin Marinas et al.
• bpf [networking] (tcx & tc bpf, sock_addr)
  10 messages in 7d · last 2026-10-04 08:21 · Daniel Borkmann
• x86 architecture (32-bit and 64-bit)
  10 messages in 7d · last 2026-10-03 16:40 · Thomas Gleixner et al.
• xdp sockets (af_xdp)
  9 messages in 7d · last 2026-10-02 19:02 · Magnus Karlsson et al.
• performance events subsystem Supported
  9 messages in 7d · last 2026-10-01 22:55 · Peter Zijlstra et al.
• networking [ipv4/ipv6]
  8 messages in 7d · last 2026-10-02 09:25 · David Ahern et al.
• risc-v architecture Supported
  7 messages in 7d · last 2026-10-03 16:42 · Paul Walmsley et al.
• block layer
  7 messages in 7d · last 2026-10-03 12:41 · Jens Axboe
• bpf jit for arm64 Supported
  7 messages in 7d · last 2026-10-02 12:47 · Daniel Borkmann et al.
• scheduler
  6 messages in 7d · last 2026-10-03 16:42 · Ingo Molnar et al.
• control group - block io controller (blkio)
  6 messages in 7d · last 2026-10-03 12:41 · Tejun Heo et al.
• bpf jit for risc-v (64-bit)
  6 messages in 7d · last 2026-10-01 15:41 · Björn Töpel
• stmmac ethernet driver
  6 messages in 7d · last 2026-10-01 09:26 · Maxime Chevallier
• read-copy update (rcu) Supported
  6 messages in 7d · last 2026-09-29 17:17 · "Paul E. McKenney" et al.
• bpf [l7 framework] (sockmap)
  5 messages in 7d · last 2026-10-04 04:44 · John Fastabend et al.
• linux for powerpc (32-bit and 64-bit) Supported
  5 messages in 7d · last 2026-10-03 18:42 · Madhavan Srinivasan
• bpf jit for x86 64-bit Supported
  5 messages in 7d · last 2026-10-02 12:47 · Alexei Starovoitov et al.
• kprobes
  5 messages in 7d · last 2026-10-02 04:48 · Naveen N Rao et al.
• yaml netlink (ynl)
  5 messages in 7d · last 2026-09-30 01:51 · Donald Hunter et al.
• module support
  4 messages in 7d · last 2026-10-03 19:44 · Luis Chamberlain et al.
• generic include/asm header files
  4 messages in 7d · last 2026-10-03 19:44 · Arnd Bergmann
• memory mapping - madvise (memory advice)
  4 messages in 7d · last 2026-10-03 16:44 · Andrew Morton et al.
• xdp (express data path) Supported
  4 messages in 7d · last 2026-10-02 19:02 · Alexei Starovoitov et al.
• page pool Supported
  4 messages in 7d · last 2026-10-02 19:01 · Jesper Dangaard Brouer et al.
• vm sockets (af_vsock)
  4 messages in 7d · last 2026-10-01 21:16 · Stefano Garzarella
• networking [tcp]
  4 messages in 7d · last 2026-10-01 13:27 · Eric Dumazet et al.
• kernel build + files below scripts/ (unless maintained elsewhere) Odd Fixes
  3 messages in 7d · last 2026-10-03 19:44 · Nathan Chancellor et al.
• memory management - thp (transparent huge page)
  3 messages in 7d · last 2026-10-03 16:46 · Andrew Morton et al.
• memory management - migration
  3 messages in 7d · last 2026-10-03 16:45 · Andrew Morton et al.
• memory management - reclaim
  3 messages in 7d · last 2026-10-03 16:45 · Andrew Morton et al.
• memory management - mglru (multi-gen lru)
  3 messages in 7d · last 2026-10-03 16:45 · Andrew Morton
• memory management - userfaultfd
  3 messages in 7d · last 2026-10-03 16:44 · Andrew Morton et al.
• drm drivers
  3 messages in 7d · last 2026-10-03 16:43 · David Airlie et al.
• drm drivers and misc gpu patches
  3 messages in 7d · last 2026-10-03 16:43 · Maarten Lankhorst et al.
• hugetlb subsystem
  3 messages in 7d · last 2026-10-03 16:42 · Muchun Song et al.
• control group (cgroup)
  3 messages in 7d · last 2026-10-03 12:41 · Tejun Heo et al.
• meta ethernet drivers
  3 messages in 7d · last 2026-10-02 19:02 · Alexander Duyck et al.
• generic entry code
  3 messages in 7d · last 2026-09-29 17:17 · Thomas Gleixner et al.
• networking [tls]
  2 messages in 7d · last 2026-10-04 04:44 · John Fastabend et al.
• hid core layer
  2 messages in 7d · last 2026-10-03 19:44 · Jiri Kosina et al.
• kernel virtual machine for arm64 (kvm/arm64)
  2 messages in 7d · last 2026-10-03 16:43 · Marc Zyngier et al.
• memory management - gup (get user pages)
  2 messages in 7d · last 2026-10-03 16:42 · Andrew Morton et al.
• memory management - rmap (reverse mapping)
  2 messages in 7d · last 2026-10-03 16:42 · Andrew Morton et al.
• mmu gather and tlb invalidation
  2 messages in 7d · last 2026-10-03 16:42 · Will Deacon et al.
• sound
  2 messages in 7d · last 2026-10-03 16:37 · Jaroslav Kysela et al.
• bpf [tooling] (bpftool)
  2 messages in 7d · last 2026-10-02 12:47 · Quentin Monnet
• bpf [security & lsm] (security audit and enforcement using bpf)
  2 messages in 7d · last 2026-10-01 22:53 · KP Singh et al.
• bpf [tracing]
  2 messages in 7d · last 2026-10-01 22:53 · Song Liu
• virtio and vhost vsock driver
  2 messages in 7d · last 2026-10-01 15:13 · Stefan Hajnoczi et al.
• broadcom bnxt_en 50 gigabit ethernet driver
  2 messages in 7d · last 2026-10-01 14:25 · Michael Chan et al.
• function hooks (ftrace)
  2 messages in 7d · last 2026-10-01 10:29 · Steven Rostedt et al.
• fsnotify: filesystem notification infrastructure
  2 messages in 7d · last 2026-10-01 09:31 · Jan Kara
• exec & binfmt api, elf Supported
  2 messages in 7d · last 2026-09-30 13:32 · Kees Cook
• soundwire subsystem Supported
  2 messages in 7d · last 2026-09-29 11:51 · Vinod Koul et al.
• marvell octeontx2 physical function driver
  2 messages in 7d · last 2026-09-29 02:30 · Sunil Goutham et al.
• tc subsystem
  1 message in 7d · last 2026-10-04 08:21 · Jamal Hadi Salim et al.
• bpf jit for powerpc (32-bit and 64-bit) Supported
  1 message in 7d · last 2026-10-03 18:42 · Hari Bathini et al.
• fuse filesystem [core] Supported
  1 message in 7d · last 2026-10-03 16:46 · Miklos Szeredi
• memory management - ksm (kernel samepage merging)
  1 message in 7d · last 2026-10-03 16:44 · Andrew Morton et al.
• kernel virtual machine for risc-v (kvm/riscv)
  1 message in 7d · last 2026-10-03 16:42 · Anup Patel
• kernel virtual machine for s390 (kvm/s390) Supported
  1 message in 7d · last 2026-10-03 16:42 · Christian Borntraeger et al.
• s390 architecture Supported
  1 message in 7d · last 2026-10-03 16:42 · Heiko Carstens et al.
• sparc + ultrasparc (sparc/sparc64)
  1 message in 7d · last 2026-10-03 16:42 · "David S. Miller" et al.
• proc filesystem
  1 message in 7d · last 2026-10-03 16:42
• memory management - numa placement
  1 message in 7d · last 2026-10-03 16:42 · Andrew Morton et al.
• memory management - swap
  1 message in 7d · last 2026-10-03 16:42 · Andrew Morton et al.
• page cache Supported
  1 message in 7d · last 2026-10-03 16:42 · Matthew Wilcox et al.
• uprobes
  1 message in 7d · last 2026-10-03 16:40 · Masami Hiramatsu et al.
• hsi subsystem
  1 message in 7d · last 2026-10-03 16:39 · Sebastian Reichel
• framebuffer core Odd Fixes
  1 message in 7d · last 2026-10-03 16:39 · Simona Vetter
• arc framebuffer driver
  1 message in 7d · last 2026-10-03 16:39 · Jaya Kumar
• framebuffer layer
  1 message in 7d · last 2026-10-03 16:39 · Helge Deller
• scsi sg driver
  1 message in 7d · last 2026-10-03 16:39 · Doug Gilbert
• scsi subsystem
  1 message in 7d · last 2026-10-03 16:39 · "James E.J. Bottomley" et al.
• selinux security module Supported
  1 message in 7d · last 2026-10-03 16:37 · Paul Moore et al.
• infiniband subsystem Supported
  1 message in 7d · last 2026-10-03 16:36 · Jason Gunthorpe et al.
• usb subsystem Supported
  1 message in 7d · last 2026-10-03 16:36 · Greg Kroah-Hartman
• libnvdimm: non-volatile memory device subsystem Supported
  1 message in 7d · last 2026-10-03 03:59 · Dan Williams et al.
• hyper-v/azure core and drivers Supported
  1 message in 7d · last 2026-10-03 01:37 · "K. Y. Srinivasan" et al.
• io_uring
  1 message in 7d · last 2026-10-02 19:01 · Jens Axboe
• networking [ethtool]
  1 message in 7d · last 2026-10-02 19:00 · Andrew Lunn et al.
• kernel pacman packaging (in addition to generic kernel build)
  1 message in 7d · last 2026-10-01 22:55 · Thomas Weißschuh
• scheduler - sched_ext
  1 message in 7d · last 2026-10-01 22:55
• netfilter
  1 message in 7d · last 2026-10-01 22:54 · Pablo Neira Ayuso et al.
• networking [ipsec]
  1 message in 7d · last 2026-10-01 22:54 · Steffen Klassert et al.
• user datagram protocol (udp)
  1 message in 7d · last 2026-09-30 13:54 · Willem de Bruijn