Yang Yang 94bfe85bde mm/vmstat: add events for ksm cow ... Users may use ksm by calling madvise(, , MADV_MERGEABLE) when they want to save memory, it's a tradeoff by suffering delay on ksm cow. Users can get to know how much memory ksm saved by reading /sys/kernel/mm/ksm/pages_sharing, but they don't know what's the costs of ksm cow, and this is important of some delay sensitive tasks. So add ksm cow events to help users evaluate whether or how to use ksm. Also update Documentation/admin-guide/mm/ksm.rst with new added events. Link: https://lkml.kernel.org/r/20220331035616.2390805-1-yang.yang29@zte.com.cn Signed-off-by: Yang Yang <yang.yang29@zte.com.cn> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: xu xin <xu.xin16@zte.com.cn> Reviewed-by: Ran Xiaokai <ran.xiaokai@zte.com.cn> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Saravanan D <saravanand@fb.com> Cc: Minchan Kim <minchan@kernel.org> Cc: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2022-04-28 23:16:16 -07:00
..
damon	mm/damon: prevent activated scheme from sleeping by deactivated schemes	2022-04-01 11:46:09 -07:00
kasan	kasan: prevent cpu_quarantine corruption when CPU offline and cache shrink occur at same time	2022-04-27 13:28:48 -07:00
kfence	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
backing-dev.c
balloon_compaction.c	mm/balloon_compaction: make balloon page compaction callbacks static	2022-03-28 16:52:57 -04:00
bootmem_info.c
cma.c
cma.h
cma_debug.c
cma_sysfs.c
compaction.c	mm: compaction: use helper isolation_suitable()	2022-04-28 23:16:06 -07:00
debug.c
debug_page_ref.c
debug_vm_pgtable.c	mm/debug_vm_pgtable: drop protection_map[] usage	2022-04-28 23:16:12 -07:00
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap.c	tmpfs: fix regressions from wider use of ZERO_PAGE	2022-04-15 14:49:54 -07:00
folio-compat.c
frontswap.c
gup.c	mm/munlock: add lru_add_drain() to fix memcg_stat_test	2022-04-01 11:46:09 -07:00
gup_test.c
gup_test.h
highmem.c	highmem: fix checks in __kmap_local_sched_{in,out}	2022-04-08 14:20:36 -10:00
hmm.c
huge_memory.c	mm/huge_memory: Avoid calling pmd_page() on a non-leaf PMD	2022-04-07 09:43:41 -04:00
hugetlb.c	mm: hugetlb_vmemmap: cleanup hugetlb_vmemmap related functions	2022-04-28 23:16:14 -07:00
hugetlb_cgroup.c
hugetlb_vmemmap.c	mm/hugetlb_vmemmap: move comment block to Documentation/vm	2022-04-28 23:16:15 -07:00
hugetlb_vmemmap.h	mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE_VMEMMAP*	2022-04-28 23:16:15 -07:00
hwpoison-inject.c
init-mm.c
internal.h	mm: rmap: introduce pfn_mkclean_range() to cleans PTEs	2022-04-28 23:16:10 -07:00
interval_tree.c
io-mapping.c
ioremap.c
Kconfig	mm/mmap: drop arch_filter_pgprot()	2022-04-28 23:16:13 -07:00
Kconfig.debug
khugepaged.c	mm/khugepaged: remove reuse_swap_page() usage	2022-03-24 19:06:51 -07:00
kmemleak.c	mm: kmemleak: take a full lowmem check in kmemleak_*_phys()	2022-04-15 14:49:56 -07:00
ksm.c	ksm: count ksm merging pages for each process	2022-04-28 23:16:16 -07:00
list_lru.c	mm/list_lru.c: revert "mm/list_lru: optimize memcg_reparent_list_lru_node()"	2022-04-08 14:20:36 -10:00
maccess.c
madvise.c	mm/madvise: fix potential pte_unmap_unlock pte error	2022-04-28 23:16:09 -07:00
Makefile	mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE_VMEMMAP*	2022-04-28 23:16:15 -07:00
mapping_dirty_helpers.c
memblock.c	memblock: test suite and a small cleanup	2022-03-27 13:36:06 -07:00
memcontrol.c	mm/memcontrol.c: remove unused private flag of memory.oom_control	2022-04-28 23:16:00 -07:00
memfd.c
memory-failure.c	mm, hugetlb, hwpoison: separate branch for free and in-use hugepage	2022-04-28 23:16:02 -07:00
memory.c	mm/vmstat: add events for ksm cow	2022-04-28 23:16:16 -07:00
memory_hotplug.c	mm/sparse-vmemmap: add a pgmap argument to section activation	2022-04-28 23:16:15 -07:00
mempolicy.c	mm/mempolicy: clean up the code logic in queue_pages_pte_range	2022-04-28 23:16:06 -07:00
mempool.c
memremap.c	mm/sparse-vmemmap: improve memory savings for compound devmaps	2022-04-28 23:16:16 -07:00
memtest.c
migrate.c	mm: untangle config dependencies for demote-on-reclaim	2022-04-28 23:16:09 -07:00
migrate_device.c
mincore.c
mlock.c	mm/munlock: protect the per-CPU pagevec by a local_lock_t	2022-04-01 11:46:09 -07:00
mm_init.c
mmap.c	mm/mmap: drop arch_vm_get_page_pgprot()	2022-04-28 23:16:14 -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
mprotect.c
mremap.c	mm/mremap: avoid unneeded do_munmap call	2022-04-28 23:16:14 -07:00
msync.c
nommu.c	no-MMU: expose vmalloc_huge() for alloc_large_system_hash()	2022-04-25 10:11:49 -07:00
oom_kill.c	oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup	2022-04-21 20:01:10 -07:00
page-writeback.c	mm: rework calculation of bdi_min_ratio in bdi_set_min_ratio	2022-04-28 23:15:57 -07:00
page_alloc.c	mm/page_alloc: reuse tail struct pages for compound devmaps	2022-04-28 23:16:16 -07:00
page_counter.c
page_ext.c
page_idle.c
page_io.c	mm: fix unexpected zeroed page mapping with zram swap	2022-04-15 14:49:55 -07:00
page_isolation.c	mm: wrap __find_buddy_pfn() with a necessary buddy page validation	2022-04-28 23:16:01 -07:00
page_owner.c
page_poison.c
page_reporting.c
page_reporting.h
page_table_check.c
page_vma_mapped.c	mm: pvmw: add support for walking devmap pages	2022-04-28 23:16:10 -07:00
pagewalk.c
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c
pgalloc-track.h
pgtable-generic.c
process_vm_access.c
ptdump.c
readahead.c	readahead: Update comments	2022-04-01 14:40:42 -04:00
rmap.c	mm: rmap: introduce pfn_mkclean_range() to cleans PTEs	2022-04-28 23:16:10 -07:00
rodata_test.c
secretmem.c	mm/secretmem: fix panic when growing a memfd_secret	2022-04-15 14:49:54 -07:00
shmem.c	mm: shmem: make shmem_init return void	2022-04-28 23:15:58 -07:00
shuffle.c
shuffle.h
slab.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
slab.h	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
slab_common.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
slob.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
slub.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
sparse-vmemmap.c	mm/sparse-vmemmap: improve memory savings for compound devmaps	2022-04-28 23:16:16 -07:00
sparse.c	mm/sparse-vmemmap: add a pgmap argument to section activation	2022-04-28 23:16:15 -07:00
swap.c	mm/munlock: protect the per-CPU pagevec by a local_lock_t	2022-04-01 11:46:09 -07:00
swap_cgroup.c
swap_slots.c
swap_state.c
swapfile.c	mm/swapfile: remove stale reuse_swap_page()	2022-03-24 19:06:51 -07:00
truncate.c
usercopy.c
userfaultfd.c	userfaultfd: mark uffd_wp regardless of VM_WRITE flag	2022-04-21 20:01:09 -07:00
util.c	kvmalloc: use vmalloc_huge for vmalloc allocations	2022-04-24 10:05:38 -07:00
vmacache.c
vmalloc.c	vmap(): don't allow invalid pages	2022-04-28 23:16:00 -07:00
vmpressure.c
vmscan.c	mm/vmscan: fix comment for isolate_lru_pages	2022-04-28 23:16:04 -07:00
vmstat.c	mm/vmstat: add events for ksm cow	2022-04-28 23:16:16 -07:00
workingset.c	memcg: sync flush only if periodic flush is delayed	2022-04-21 20:01:09 -07:00
z3fold.c	mm/z3fold: remove unneeded PAGE_HEADLESS check in free_handle()	2022-04-28 23:16:06 -07:00
zbud.c
zpool.c
zsmalloc.c
zswap.c