Shakeel Butt 8278f1c7b4 memcg: reduce size of memcg vmstats structures ... The struct memcg_vmstats and struct memcg_vmstats_percpu contains two arrays each for events of size NR_VM_EVENT_ITEMS which can be as large as 110. However the memcg v1 only uses 4 of those while memcg v2 uses 15. The union of both is 17. On a 64 bit system, we are wasting approximately ((110 - 17) * 8 * 2) * (nr_cpus + 1) bytes which is significant on large machines. This patch reduces the size of the given structures by adding one indirection and only stores array of events which are actually used by the memcg code. With this patch, the size of memcg_vmstats has reduced from 2544 bytes to 1056 bytes while the size of memcg_vmstats_percpu has reduced from 2568 bytes to 1080 bytes. [akpm@linux-foundation.org: fix memcg_events_local() array index, per Shakeel] Link: https://lkml.kernel.org/r/CALvZod70Mvxr+Nzb6k0yiU2RFYjTD=0NFhKK-Eyp+5ejd1PSFw@mail.gmail.com Link: https://lkml.kernel.org/r/20220907043537.3457014-4-shakeelb@google.com Signed-off-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2022-10-03 14:03:05 -07:00
..
damon	mm/damon: simplify damon_ctx check in damon_sysfs_before_terminate	2022-10-03 14:03:03 -07:00
kasan	kasan: better invalid/double-free report header	2022-10-03 14:03:02 -07:00
kfence	kfence: add sysfs interface to disable kfence for selected slabs.	2022-09-11 20:25:52 -07:00
backing-dev.c	mm: backing-dev: Remove the unneeded result variable	2022-09-11 20:26:02 -07:00
balloon_compaction.c	mm: Convert all PageMovable users to movable_operations	2022-08-02 12:34:03 -04:00
bootmem_info.c	bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem	2022-08-28 14:02:45 -07:00
cma.c	Revert "mm/cma.c: remove redundant cma_mutex lock"	2022-05-13 15:11:26 -07:00
cma.h
cma_debug.c	mm/cma_debug: show complete cma name in debugfs directories	2022-09-11 20:25:50 -07:00
cma_sysfs.c
compaction.c	mm: add pageblock_aligned() macro	2022-10-03 14:03:04 -07:00
debug.c	mm: remove the vma linked list	2022-09-26 19:46:26 -07:00
debug_page_ref.c
debug_vm_pgtable.c	docs: rename Documentation/vm to Documentation/mm	2022-06-27 12:52:53 -07:00
dmapool.c
early_ioremap.c
fadvise.c	riscv: compat: syscall: Add compat_sys_call_table implementation	2022-04-26 13:36:25 -07:00
failslab.c	mm: fix missing handler for __GFP_NOWARN	2022-05-19 14:08:55 -07:00
filemap.c	filemap: convert filemap_range_has_writeback() to use folios	2022-10-03 14:02:56 -07:00
folio-compat.c	mm: remove try_to_free_swap()	2022-10-03 14:02:53 -07:00
frontswap.c	frontswap: don't call ->init if no ops are registered	2022-09-26 12:14:34 -07:00
gup.c	mm/gup: use gup_can_follow_protnone() also in GUP-fast	2022-09-26 19:46:28 -07:00
gup_test.c	mm: rename is_pinnable_page() to is_longterm_pinnable_page()	2022-07-17 17:14:27 -07:00
gup_test.h
highmem.c	- The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe	2022-08-05 16:32:45 -07:00
hmm.c	mm/swap: add swp_offset_pfn() to fetch PFN from swap entry	2022-09-26 19:46:05 -07:00
huge_memory.c	mm: convert page_get_anon_vma() to folio_get_anon_vma()	2022-10-03 14:02:54 -07:00
hugetlb.c	mm/hugetlb.c: remove unnecessary initialization of local `err'	2022-10-03 14:02:55 -07:00
hugetlb_cgroup.c	hugetlb_cgroup: use helper for_each_hstate and hstate_index	2022-09-11 20:25:53 -07:00
hugetlb_vmemmap.c	mm: hugetlb_vmemmap: simplify reset_struct_pages()	2022-09-11 20:25:58 -07:00
hugetlb_vmemmap.h	mm: hugetlb_vmemmap: improve hugetlb_vmemmap code readability	2022-08-08 18:06:43 -07:00
hwpoison-inject.c	mm/memory-failure: disable unpoison once hw error happens	2022-06-16 19:11:32 -07:00
init-mm.c	mm: remove rb tree.	2022-09-26 19:46:16 -07:00
internal.h	mm: remove the vma linked list	2022-09-26 19:46:26 -07:00
interval_tree.c
io-mapping.c
ioremap.c	mm: ioremap: Add ioremap/iounmap_allowed()	2022-06-27 12:22:31 +01:00
Kconfig	mm: multi-gen LRU: admin guide	2022-09-26 19:46:10 -07:00
Kconfig.debug	Two followon fixes for the post-5.19 series "Use pageblock_order for cma	2022-05-27 11:40:49 -07:00
khugepaged.c	khugepaged: call shmem_get_folio()	2022-10-03 14:02:50 -07:00
kmemleak.c	mm/kmemleak: make create_object return void	2022-09-11 20:26:10 -07:00
ksm.c	ksm: use a folio in replace_page()	2022-10-03 14:02:53 -07:00
list_lru.c	mm: kmem: make mem_cgroup_from_obj() vmalloc()-safe	2022-06-16 19:48:31 -07:00
maccess.c
madvise.c	madvise: convert madvise_free_pte_range() to use a folio	2022-10-03 14:02:52 -07:00
Makefile	mm: remove vmacache	2022-09-26 19:46:18 -07:00
mapping_dirty_helpers.c
memblock.c	mm: add pageblock_align() macro	2022-10-03 14:03:04 -07:00
memcontrol.c	memcg: reduce size of memcg vmstats structures	2022-10-03 14:03:05 -07:00
memfd.c
memory-failure.c	rmap: remove page_unlock_anon_vma_read()	2022-10-03 14:02:54 -07:00
memory-tiers.c	mm/demotion: expose memory tier details via sysfs	2022-09-26 19:46:13 -07:00
memory.c	mm: convert lock_page_or_retry() to folio_lock_or_retry()	2022-10-03 14:02:55 -07:00
memory_hotplug.c	mm: add pageblock_aligned() macro	2022-10-03 14:03:04 -07:00
mempolicy.c	mm/mempolicy: use vma iterator & maple state instead of vma linked list	2022-09-26 19:46:24 -07:00
mempool.c	mm/mempool: use might_alloc()	2022-06-16 19:48:30 -07:00
memremap.c	mm/mremap_pages: save a few cycles in get_dev_pagemap()	2022-09-11 20:26:11 -07:00
memtest.c
migrate.c	mm: convert page_get_anon_vma() to folio_get_anon_vma()	2022-10-03 14:02:54 -07:00
migrate_device.c	mm: remember young/dirty bit for page migrations	2022-09-26 19:46:05 -07:00
mincore.c	mm: teach core mm about pte markers	2022-05-13 07:20:09 -07:00
mlock.c	mm/mlock: drop dead code in count_mm_mlocked_page_nr()	2022-09-26 19:46:27 -07:00
mm_init.c	mm: multi-gen LRU: groundwork	2022-09-26 19:46:09 -07:00
mm_slot.h	mm: introduce common struct mm_slot	2022-10-03 14:02:43 -07:00
mmap.c	mm: refactor of vma_merge()	2022-09-26 19:46:27 -07:00
mmap_lock.c
mmu_gather.c	mm/mmu_gather: limit free batch count and add schedule point in tlb_batch_pages_flush	2022-04-28 23:16:12 -07:00
mmu_notifier.c	mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove()	2022-04-21 20:01:10 -07:00
mmzone.c	mm: multi-gen LRU: groundwork	2022-09-26 19:46:09 -07:00
mprotect.c	mm/mprotect: use maple tree navigation instead of VMA linked list	2022-09-26 19:46:24 -07:00
mremap.c	mm: add merging after mremap resize	2022-09-26 19:46:28 -07:00
msync.c	mm/msync: use vma_find() instead of vma linked list	2022-09-26 19:46:25 -07:00
nommu.c	mm: remove the vma linked list	2022-09-26 19:46:26 -07:00
oom_kill.c	mm: reduce noise in show_mem for lowmem allocations	2022-09-26 19:46:29 -07:00
page-writeback.c	writeback: avoid use-after-free after removing device	2022-08-28 14:02:43 -07:00
page_alloc.c	mm: add pageblock_aligned() macro	2022-10-03 14:03:04 -07:00
page_counter.c	mm: page_counter: remove unneeded atomic ops for low/min	2022-09-11 20:26:01 -07:00
page_ext.c	page_ext: introduce boot parameter 'early_page_ext'	2022-09-11 20:26:02 -07:00
page_idle.c	mm: don't be stuck to rmap lock on reclaim path	2022-05-19 14:08:54 -07:00
page_io.c	swap: convert swap_writepage() to use a folio	2022-10-03 14:02:52 -07:00
page_isolation.c	mm: add pageblock_aligned() macro	2022-10-03 14:03:04 -07:00
page_owner.c	mm: reuse pageblock_start/end_pfn() macro	2022-10-03 14:03:03 -07:00
page_poison.c
page_reporting.c
page_reporting.h
page_table_check.c	mm: fix use-after free of page_ext after race with memory-offline	2022-09-11 20:25:57 -07:00
page_vma_mapped.c	mm/swap: add swp_offset_pfn() to fetch PFN from swap entry	2022-09-26 19:46:05 -07:00
pagewalk.c	mm/pagewalk: use vma_find() instead of vma linked list	2022-09-26 19:46:25 -07:00
percpu-internal.h	percpu: improve percpu_alloc_percpu event trace	2022-05-13 07:20:18 -07:00
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c	mm: percpu: use kmemleak_ignore_phys() instead of kmemleak_free()	2022-07-17 17:14:47 -07:00
pgalloc-track.h
pgtable-generic.c	mm: avoid unnecessary flush on change_huge_pmd()	2022-05-13 07:20:05 -07:00
process_vm_access.c
ptdump.c
readahead.c	filemap: Fix serialization adding transparent huge pages to page cache	2022-06-23 12:22:00 -04:00
rmap.c	rmap: remove page_unlock_anon_vma_read()	2022-10-03 14:02:54 -07:00
rodata_test.c
secretmem.c	mm: fix dereferencing possible ERR_PTR	2022-09-11 16:22:31 -07:00
shmem.c	shmem: remove shmem_getpage()	2022-10-03 14:02:50 -07:00
shrinker_debug.c	mm: shrinkers: fix double kfree on shrinker name	2022-07-29 18:07:13 -07:00
shuffle.c
shuffle.h
slab.c	- The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe	2022-08-05 16:32:45 -07:00
slab.h	mm/slab_common: move generic bulk alloc/free functions to SLOB	2022-07-20 13:30:12 +02:00
slab_common.c	mm/slab_common: move generic bulk alloc/free functions to SLOB	2022-07-20 13:30:12 +02:00
slob.c	mm/slab_common: move generic bulk alloc/free functions to SLOB	2022-07-20 13:30:12 +02:00
slub.c	kfence: add sysfs interface to disable kfence for selected slabs.	2022-09-11 20:25:52 -07:00
sparse-vmemmap.c	mm: hugetlb_vmemmap: move vmemmap code related to HugeTLB to hugetlb_vmemmap.c	2022-08-08 18:06:42 -07:00
sparse.c	mm: memory_hotplug: enumerate all supported section flags	2022-07-03 18:08:49 -07:00
swap.c	mm: add folio_add_lru_vma()	2022-10-03 14:02:45 -07:00
swap.h	mm: remove lookup_swap_cache()	2022-10-03 14:02:51 -07:00
swap_cgroup.c
swap_slots.c	mm/swap: convert put_swap_page() to put_swap_folio()	2022-10-03 14:02:46 -07:00
swap_state.c	swap_state: convert free_swap_cache() to use a folio	2022-10-03 14:02:51 -07:00
swapfile.c	memcg: convert mem_cgroup_swap_full() to take a folio	2022-10-03 14:02:53 -07:00
truncate.c	mm: add split_folio()	2022-10-03 14:02:45 -07:00
usercopy.c	usercopy: use unsigned long instead of uintptr_t	2022-07-01 17:03:38 -07:00
userfaultfd.c	userfaultfd: convert mcontinue_atomic_pte() to use a folio	2022-10-03 14:02:50 -07:00
util.c	mm: remove the vma linked list	2022-09-26 19:46:26 -07:00
vmalloc.c	mm/vmalloc: extend find_vmap_lowest_match_check with extra arguments	2022-09-11 20:26:05 -07:00
vmpressure.c
vmscan.c	memcg: convert mem_cgroup_swap_full() to take a folio	2022-10-03 14:02:53 -07:00
vmstat.c	mm: remove vmacache	2022-09-26 19:46:18 -07:00
workingset.c	mm: multi-gen LRU: minimal implementation	2022-09-26 19:46:09 -07:00
z3fold.c	mm: Convert all PageMovable users to movable_operations	2022-08-02 12:34:03 -04:00
zbud.c
zpool.c
zsmalloc.c	zsmalloc: zs_object_copy: replace email link to doc	2022-09-11 20:25:56 -07:00
zswap.c	mm/swap: remove the end_write_func argument to __swap_writepage	2022-09-11 20:25:50 -07:00