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authorLinus Torvalds <torvalds@linux-foundation.org>2021-07-01 17:17:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-07-01 17:17:24 -0700
commite267992f9ef0bf717d70a9ee18049782f77e4b3a (patch)
tree6caf3664452672f41e8039f6af4279e2df709d66 /ipc
parent19b438592238b3b40c3f945bb5f9c4ca971c0c45 (diff)
parente4d777003a43feab2e000749163e531f6c48c385 (diff)
downloadlinux-e267992f9ef0bf717d70a9ee18049782f77e4b3a.tar.gz
Merge branch 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
Pull percpu updates from Dennis Zhou:

 - percpu chunk depopulation - depopulate backing pages for chunks with
   empty pages when we exceed a global threshold without those pages.
   This lets us reclaim a portion of memory that would previously be
   lost until the full chunk would be freed (possibly never).

 - memcg accounting cleanup - previously separate chunks were managed
   for normal allocations and __GFP_ACCOUNT allocations. These are now
   consolidated which cleans up the code quite a bit.

 - a few misc clean ups for clang warnings

* 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
  percpu: optimize locking in pcpu_balance_workfn()
  percpu: initialize best_upa variable
  percpu: rework memcg accounting
  mm, memcg: introduce mem_cgroup_kmem_disabled()
  mm, memcg: mark cgroup_memory_nosocket, nokmem and noswap as __ro_after_init
  percpu: make symbol 'pcpu_free_slot' static
  percpu: implement partial chunk depopulation
  percpu: use pcpu_free_slot instead of pcpu_nr_slots - 1
  percpu: factor out pcpu_check_block_hint()
  percpu: split __pcpu_balance_workfn()
  percpu: fix a comment about the chunks ordering
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