Roman Gushchin e33c267ab7 mm: shrinkers: provide shrinkers with names ... Currently shrinkers are anonymous objects. For debugging purposes they can be identified by count/scan function names, but it's not always useful: e.g. for superblock's shrinkers it's nice to have at least an idea of to which superblock the shrinker belongs. This commit adds names to shrinkers. register_shrinker() and prealloc_shrinker() functions are extended to take a format and arguments to master a name. In some cases it's not possible to determine a good name at the time when a shrinker is allocated. For such cases shrinker_debugfs_rename() is provided. The expected format is: <subsystem>-<shrinker_type>[:<instance>]-<id> For some shrinkers an instance can be encoded as (MAJOR:MINOR) pair. After this change the shrinker debugfs directory looks like: $ cd /sys/kernel/debug/shrinker/ $ ls dquota-cache-16 sb-devpts-28 sb-proc-47 sb-tmpfs-42 mm-shadow-18 sb-devtmpfs-5 sb-proc-48 sb-tmpfs-43 mm-zspool:zram0-34 sb-hugetlbfs-17 sb-pstore-31 sb-tmpfs-44 rcu-kfree-0 sb-hugetlbfs-33 sb-rootfs-2 sb-tmpfs-49 sb-aio-20 sb-iomem-12 sb-securityfs-6 sb-tracefs-13 sb-anon_inodefs-15 sb-mqueue-21 sb-selinuxfs-22 sb-xfs:vda1-36 sb-bdev-3 sb-nsfs-4 sb-sockfs-8 sb-zsmalloc-19 sb-bpf-32 sb-pipefs-14 sb-sysfs-26 thp-deferred_split-10 sb-btrfs:vda2-24 sb-proc-25 sb-tmpfs-1 thp-zero-9 sb-cgroup2-30 sb-proc-39 sb-tmpfs-27 xfs-buf:vda1-37 sb-configfs-23 sb-proc-41 sb-tmpfs-29 xfs-inodegc:vda1-38 sb-dax-11 sb-proc-45 sb-tmpfs-35 sb-debugfs-7 sb-proc-46 sb-tmpfs-40 [roman.gushchin@linux.dev: fix build warnings] Link: https://lkml.kernel.org/r/Yr+ZTnLb9lJk6fJO@castle Reported-by: kernel test robot <lkp@intel.com> Link: https://lkml.kernel.org/r/20220601032227.4076670-4-roman.gushchin@linux.dev Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev> Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Cc: Dave Chinner <dchinner@redhat.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Kent Overstreet <kent.overstreet@gmail.com> Cc: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2022-07-03 18:08:40 -07:00
..
damon	mm/damon/reclaim: add 'damon_reclaim_' prefix to 'enabled_store()'	2022-07-03 18:08:38 -07:00
kasan	kasan: fix zeroing vmalloc memory with HW_TAGS	2022-07-03 18:08:39 -07:00
kfence	mm/kfence: select random number before taking raw lock	2022-06-16 19:11:31 -07:00
Kconfig	docs: rename Documentation/vm to Documentation/mm	2022-06-27 12:52:53 -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
Makefile	mm: shrinkers: introduce debugfs interface for memory shrinkers	2022-07-03 18:08:40 -07:00
backing-dev.c	init: Initialize noop_backing_dev_info early	2022-06-16 10:55:57 +02:00
balloon_compaction.c	mm/balloon_compaction: make balloon page compaction callbacks static	2022-03-28 16:52:57 -04:00
bootmem_info.c	bootmem: Use page->index instead of page->freelist	2022-01-06 12:27:03 +01:00
cma.c	Revert "mm/cma.c: remove redundant cma_mutex lock"	2022-05-13 15:11:26 -07:00
cma.h	mm/cma: provide option to opt out from exposing pages on activation failure	2022-03-22 15:57:09 -07:00
cma_debug.c	mm/cma: change cma mutex to irq safe spinlock	2021-05-05 11:27:21 -07:00
cma_sysfs.c	mm: cma: support sysfs	2021-05-05 11:27:24 -07:00
compaction.c	mm, compaction: fast_find_migrateblock() should return pfn in the target zone	2022-05-13 16:48:57 -07:00
debug.c	mm: unexport page_init_poison	2022-03-24 19:06:45 -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	mm/dmapool.c: revert "make dma pool to use kmalloc_node"	2022-01-15 16:30:28 +02:00
early_ioremap.c	mm/early_ioremap: declare early_memremap_pgprot_adjust()	2022-03-22 15:57:11 -07:00
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: Handle sibling entries in filemap_get_read_batch()	2022-06-20 16:37:45 -04:00
folio-compat.c	fs: Remove aop flags parameter from grab_cache_page_write_begin()	2022-05-08 14:28:19 -04:00
frontswap.c	docs: rename Documentation/vm to Documentation/mm	2022-06-27 12:52:53 -07:00
gup.c	mm/migration: return errno when isolate_huge_page failed	2022-07-03 18:08:37 -07:00
gup_test.c	selftests/vm: gup_test: test faulting in kernel, and verify pinnable pages	2021-05-05 11:27:26 -07:00
gup_test.h	selftests/vm: gup_test: fix test flag	2021-05-05 11:27:26 -07:00
highmem.c	highmem: fix checks in __kmap_local_sched_{in,out}	2022-04-08 14:20:36 -10:00
hmm.c	mm: teach core mm about pte markers	2022-05-13 07:20:09 -07:00
huge_memory.c	mm: shrinkers: provide shrinkers with names	2022-07-03 18:08:40 -07:00
hugetlb.c	mm/hugetlb: remove unnecessary huge_ptep_set_access_flags() in hugetlb_mcopy_atomic_pte()	2022-07-03 18:08:39 -07:00
hugetlb_cgroup.c	hugetlb: add hugetlb.*.numa_stat file	2022-01-15 16:30:29 +02:00
hugetlb_vmemmap.c	docs: rename Documentation/vm to Documentation/mm	2022-06-27 12:52:53 -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	mm/memory-failure: disable unpoison once hw error happens	2022-06-16 19:11:32 -07:00
init-mm.c	kernel/fork: Initialize mm's PASID	2022-02-14 19:51:47 +01:00
internal.h	mm: split free page with properly free memory accounting and without race	2022-05-27 09:33:43 -07:00
interval_tree.c	…
io-mapping.c	…
ioremap.c	mm: move ioremap_page_range to vmalloc.c	2021-09-08 11:50:24 -07:00
khugepaged.c	mm: khugepaged: introduce khugepaged_enter_vma() helper	2022-05-19 14:08:50 -07:00
kmemleak.c	mm/kmemleak: prevent soft lockup in first object iteration loop of kmemleak_scan()	2022-06-16 19:48:32 -07:00
ksm.c	docs: rename Documentation/vm to Documentation/mm	2022-06-27 12:52:53 -07:00
list_lru.c	mm: kmem: make mem_cgroup_from_obj() vmalloc()-safe	2022-06-16 19:48:31 -07:00
maccess.c	asm-generic updates for 5.18	2022-03-23 18:03:08 -07:00
madvise.c	mm/memory-failure: disable unpoison once hw error happens	2022-06-16 19:11:32 -07:00
mapping_dirty_helpers.c	mm: move tlb_flush_pending inline helpers to mm_inline.h	2022-01-15 16:30:27 +02:00
memblock.c	mm: kmemleak: remove kmemleak_not_leak_phys() and the min_count argument to kmemleak_alloc_phys()	2022-06-16 19:48:30 -07:00
memcontrol.c	mm: memcontrol: introduce mem_cgroup_ino() and mem_cgroup_get_from_ino()	2022-07-03 18:08:40 -07:00
memfd.c	memfd: fix F_SEAL_WRITE after shmem huge page allocated	2022-03-05 11:08:32 -08:00
memory-failure.c	mm/migration: return errno when isolate_huge_page failed	2022-07-03 18:08:37 -07:00
memory.c	mm: avoid unnecessary page fault retires on shared memory types	2022-06-16 19:48:27 -07:00
memory_hotplug.c	mm/migration: return errno when isolate_huge_page failed	2022-07-03 18:08:37 -07:00
mempolicy.c	mm/mempolicy: fix get_nodes out of bound access	2022-07-03 18:08:39 -07:00
mempool.c	mm/mempool: use might_alloc()	2022-06-16 19:48:30 -07:00
memremap.c	mm/memremap: fix memunmap_pages() race with get_dev_pagemap()	2022-06-16 19:48:31 -07:00
memtest.c	…
migrate.c	mm/migration: fix potential pte_unmap on an not mapped pte	2022-07-03 18:08:37 -07:00
migrate_device.c	mm: remember exclusively mapped anonymous pages with PG_anon_exclusive	2022-05-09 18:20:44 -07:00
mincore.c	mm: teach core mm about pte markers	2022-05-13 07:20:09 -07:00
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	include/linux/page-flags-layout.h: cleanups	2021-04-30 11:20:42 -07:00
mmap.c	docs: rename Documentation/vm to Documentation/mm	2022-06-27 12:52:53 -07:00
mmap_lock.c	mm: mmap_lock: fix disabling preemption directly	2021-07-23 17:43:28 -07:00
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	Folio changes for 5.18	2022-03-22 17:03:12 -07:00
mprotect.c	mm/hugetlb: handle UFFDIO_WRITEPROTECT	2022-05-13 07:20:11 -07:00
mremap.c	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -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	mm/oom_kill.c: fix vm_oom_kill_table[] ifdeffery	2022-06-01 15:57:16 -07:00
page-writeback.c	sysctl changes for v5.19-rc1	2022-05-26 16:57:20 -07:00
page_alloc.c	mm: introduce clear_highpage_kasan_tagged	2022-07-03 18:08:39 -07:00
page_counter.c	mm/page_counter: remove an incorrect call to propagate_protected_usage()	2022-01-15 16:30:27 +02:00
page_ext.c	mm: use for_each_online_node and node_online instead of open coding	2022-04-29 14:36:58 -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	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -07:00
page_isolation.c	mm/page_isolation.c: fix one kernel-doc comment	2022-06-16 19:11:30 -07:00
page_owner.c	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -07:00
page_poison.c	…
page_reporting.c	mm/page_reporting: allow driver to specify reporting order	2021-06-29 10:53:47 -07:00
page_reporting.h	mm/page_reporting: export reporting order as module parameter	2021-06-29 10:53:47 -07:00
page_table_check.c	Six hotfixes. One from Miaohe Lin is considered a minor thing so it isn't	2022-05-27 11:29:35 -07:00
page_vma_mapped.c	mm/page_vma_mapped.c: check possible huge PMD map with transhuge_vma_suitable()	2022-07-03 18:08:37 -07:00
pagewalk.c	mm: pagewalk: fix walk for hugepage tables	2021-06-29 10:53:49 -07:00
percpu-internal.h	percpu: improve percpu_alloc_percpu event trace	2022-05-13 07:20:18 -07:00
percpu-km.c	percpu: flush tlb in pcpu_reclaim_populated()	2021-07-04 18:30:17 +00:00
percpu-stats.c	mm: use vmalloc_array and vcalloc for array allocations	2022-03-08 09:30:46 -05:00
percpu-vm.c	percpu: flush tlb in pcpu_reclaim_populated()	2021-07-04 18:30:17 +00:00
percpu.c	percpu: improve percpu_alloc_percpu event trace	2022-05-13 07:20:18 -07:00
pgalloc-track.h	mm: fix typos in comments	2021-05-07 00:26:35 -07:00
pgtable-generic.c	mm: avoid unnecessary flush on change_huge_pmd()	2022-05-13 07:20:05 -07:00
process_vm_access.c	mm/process_vm_access.c: remove duplicate include	2021-05-05 11:27:27 -07:00
ptdump.c	mm: sparsemem: use page table lock to protect kernel pmd operations	2022-03-22 15:57:08 -07:00
readahead.c	filemap: Fix serialization adding transparent huge pages to page cache	2022-06-23 12:22:00 -04:00
rmap.c	docs: rename Documentation/vm to Documentation/mm	2022-06-27 12:52:53 -07:00
rodata_test.c	…
secretmem.c	secretmem: Convert to free_folio	2022-05-09 23:12:53 -04:00
shmem.c	mm/shmem.c: clean up comment of shmem_swapin_folio	2022-06-16 19:48:28 -07:00
shrinker_debug.c	mm: shrinkers: provide shrinkers with names	2022-07-03 18:08:40 -07:00
shuffle.c	…
shuffle.h	mm/shuffle: fix section mismatch warning	2021-05-22 15:09:07 -10:00
slab.c	mm/slab: delete cache_alloc_debugcheck_before()	2022-06-16 19:48:29 -07:00
slab.h	slab changes for 5.19	2022-05-25 10:24:04 -07:00
slab_common.c	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -07:00
slob.c	mm: make minimum slab alignment a runtime property	2022-05-13 07:20:07 -07:00
slub.c	mm/slub: add missing TID updates on slab deactivation	2022-06-13 17:41:36 +02:00
sparse-vmemmap.c	docs: rename Documentation/vm to Documentation/mm	2022-06-27 12:52:53 -07:00
sparse.c	mm/memory-failure.c: move clear_hwpoisoned_pages	2022-05-13 07:20:19 -07:00
swap.c	mm: lru_cache_disable: use synchronize_rcu_expedited	2022-06-16 19:11:30 -07:00
swap.h	swap: convert add_to_swap() to take a folio	2022-05-13 07:20:15 -07:00
swap_cgroup.c	mm: use vmalloc_array and vcalloc for array allocations	2022-03-08 09:30:46 -05:00
swap_slots.c	mm/swap: remove buggy cache->nr check in refill_swap_slots_cache	2022-05-19 14:08:51 -07:00
swap_state.c	mm: filter out swapin error entry in shmem mapping	2022-05-27 09:33:46 -07:00
swapfile.c	Two followon fixes for the post-5.19 series "Use pageblock_order for cma	2022-05-27 11:40:49 -07:00
truncate.c	Filesystem folio changes for 5.18	2022-03-22 18:26:56 -07:00
usercopy.c	usercopy: Make usercopy resilient against ridiculously large copies	2022-06-13 09:54:52 -07:00
userfaultfd.c	mm/uffd: enable write protection for shmem & hugetlbfs	2022-05-13 07:20:11 -07:00
util.c	docs: rename Documentation/vm to Documentation/mm	2022-06-27 12:52:53 -07:00
vmacache.c	…
vmalloc.c	kasan: fix zeroing vmalloc memory with HW_TAGS	2022-07-03 18:08:39 -07:00
vmpressure.c	mm/vmpressure: fix data-race with memcg->socket_pressure	2021-11-06 13:30:40 -07:00
vmscan.c	mm: shrinkers: provide shrinkers with names	2022-07-03 18:08:40 -07:00
vmstat.c	Bitmap patches for 5.19-rc1	2022-06-04 14:04:27 -07:00
workingset.c	mm: shrinkers: provide shrinkers with names	2022-07-03 18:08:40 -07:00
z3fold.c	mm/z3fold: fix z3fold_page_migrate races with z3fold_map	2022-05-27 09:33:44 -07:00
zbud.c	mm/zbud: add kerneldoc fields for zbud_pool	2021-07-01 11:06:03 -07:00
zpool.c	zpool: remove the list of pools_head	2022-01-15 16:30:31 +02:00
zsmalloc.c	mm: shrinkers: provide shrinkers with names	2022-07-03 18:08:40 -07:00
zswap.c	zswap: memcg accounting	2022-05-19 14:08:53 -07:00