Active subsystems in linux-perf-users

47 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.

• performance events subsystem Supported
  61 messages in 7d · last 2026-09-04 21:17 · Peter Zijlstra et al.
• arm64 port (aarch64 architecture)
  26 messages in 7d · last 2026-09-03 16:07 · Catalin Marinas et al.
• kernel virtual machine for arm64 (kvm/arm64)
  24 messages in 7d · last 2026-09-03 16:07 · Marc Zyngier et al.
• x86 architecture (32-bit and 64-bit)
  16 messages in 7d · last 2026-09-04 20:15 · Thomas Gleixner et al.
• documentation
  14 messages in 7d · last 2026-09-03 16:07 · Jonathan Corbet
• tracing
  13 messages in 7d · last 2026-09-03 10:31 · Steven Rostedt et al.
• arm pmu profiling and debugging
  9 messages in 7d · last 2026-09-04 12:35 · Will Deacon et al.
• uprobes
  9 messages in 7d · last 2026-08-31 15:07 · Masami Hiramatsu et al.
• kernel virtual machine (kvm) Supported
  8 messages in 7d · last 2026-09-03 16:07 · Paolo Bonzini
• memory management - core
  6 messages in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• memory management
  5 messages in 7d · last 2026-09-03 10:31 · Andrew Morton
• iommu subsystem
  2 messages in 7d · last 2026-09-04 09:21 · Joerg Roedel et al.
• risc-v iommu
  2 messages in 7d · last 2026-09-04 09:21 · Tomasz Jeznach
• kasan
  2 messages in 7d · last 2026-09-03 10:31 · Andrey Ryabinin
• hugetlb subsystem
  2 messages in 7d · last 2026-09-03 10:31 · Muchun Song et al.
• memory mapping
  2 messages in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• memory management - ksm (kernel samepage merging)
  2 messages in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• memory mapping - madvise (memory advice)
  2 messages in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• hisilicon ptt driver
  2 messages in 7d · last 2026-09-03 07:53 · Sizhe Liu
• hardware tracing facilities
  2 messages in 7d · last 2026-09-03 07:53 · Alexander Shishkin
• synopsys designware pcie pmu driver Supported
  1 message in 7d · last 2026-09-04 12:35 · Shuai Xue et al.
• xen hypervisor interface Supported
  1 message in 7d · last 2026-09-03 10:32 · Juergen Gross et al.
• intel drm i915 driver (meteor lake, dg2 and older excluding poulsbo, moorestown and derivative) Supported
  1 message in 7d · last 2026-09-03 10:31 · Jani Nikula et al.
• drm drivers
  1 message in 7d · last 2026-09-03 10:31 · David Airlie et al.
• proc filesystem
  1 message in 7d · last 2026-09-03 10:31
• generic include/asm header files
  1 message in 7d · last 2026-09-03 10:31 · Arnd Bergmann
• mmu gather and tlb invalidation
  1 message in 7d · last 2026-09-03 10:31 · Will Deacon et al.
• page table check
  1 message in 7d · last 2026-09-03 10:31 · Pasha Tatashin et al.
• memory management - rmap (reverse mapping)
  1 message in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• memory management - swap
  1 message in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• vmalloc
  1 message in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• bpf [general] (safe dynamic programs and tools) Supported
  1 message in 7d · last 2026-09-03 10:31 · Alexei Starovoitov et al.
• damon
  1 message in 7d · last 2026-09-03 10:31 · SJ Park
• page cache Supported
  1 message in 7d · last 2026-09-03 10:31 · Matthew Wilcox et al.
• memory management - gup (get user pages)
  1 message in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• memory management - thp (transparent huge page)
  1 message in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• memory management - misc
  1 message in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• hwpoison memory failure handling
  1 message in 7d · last 2026-09-03 10:31 · Miaohe Lin
• memory management - memory policy and migration
  1 message in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• memory management - userfaultfd
  1 message in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• memory management - mglru (multi-gen lru)
  1 message in 7d · last 2026-09-03 10:31 · Andrew Morton
• memory management - reclaim
  1 message in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• applied micro (apm) x-gene soc pmu Supported
  1 message in 7d · last 2026-09-02 07:23 · Khuong Dinh
• kernel selftest framework
  1 message in 7d · last 2026-08-31 15:07 · Shuah Khan et al.
• x86 mm
  1 message in 7d · last 2026-08-31 15:07 · Dave Hansen et al.
• scheduler
  1 message in 7d · last 2026-08-31 15:07 · Ingo Molnar et al.
• exec & binfmt api, elf Supported
  1 message in 7d · last 2026-08-31 15:07 · Kees Cook