From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, cl@linux.com, iamjoonsoo.kim@lge.com,
linux-mm@kvack.org, mkoutny@suse.com, mm-commits@vger.kernel.org,
penberg@kernel.org, rientjes@google.com,
torvalds@linux-foundation.org, vbabka@suse.cz
Subject: [patch 009/128] slub: Remove userspace notifier for cache add/remove
Date: Tue, 02 Jun 2020 13:10:23 -0700 [thread overview]
Message-ID: <20200602201023.WZGjH4bkn%akpm@linux-foundation.org> (raw)
In-Reply-To: <20200602130930.8e8f10fa6f19e3766e70921f@linux-foundation.org>
From: Christoph Lameter <cl@linux.com>
Subject: slub: Remove userspace notifier for cache add/remove
I came across some unnecessary uevents once again which reminded me this.
The patch seems to be lost in the leaves of the original discussion [1],
so resending.
[1] https://lore.kernel.org/r/alpine.DEB.2.21.2001281813130.745@www.lameter.com
Kmem caches are internal kernel structures so it is strange that userspace
notifiers would be needed. And I am not aware of any use of these
notifiers. These notifiers may just exist because in the initial slub
release the sysfs code was copied from another subsystem.
Link: http://lkml.kernel.org/r/20200423115721.19821-1-mkoutny@suse.com
Signed-off-by: Christoph Lameter <cl@linux.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Koutný <mkoutny@suse.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/slub.c | 17 +----------------
1 file changed, 1 insertion(+), 16 deletions(-)
--- a/mm/slub.c~slub-remove-userspace-notifier-for-cache-add-remove
+++ a/mm/slub.c
@@ -5715,19 +5715,6 @@ static struct kobj_type slab_ktype = {
.release = kmem_cache_release,
};
-static int uevent_filter(struct kset *kset, struct kobject *kobj)
-{
- struct kobj_type *ktype = get_ktype(kobj);
-
- if (ktype == &slab_ktype)
- return 1;
- return 0;
-}
-
-static const struct kset_uevent_ops slab_uevent_ops = {
- .filter = uevent_filter,
-};
-
static struct kset *slab_kset;
static inline struct kset *cache_kset(struct kmem_cache *s)
@@ -5795,7 +5782,6 @@ static void sysfs_slab_remove_workfn(str
#ifdef CONFIG_MEMCG
kset_unregister(s->memcg_kset);
#endif
- kobject_uevent(&s->kobj, KOBJ_REMOVE);
out:
kobject_put(&s->kobj);
}
@@ -5853,7 +5839,6 @@ static int sysfs_slab_add(struct kmem_ca
}
#endif
- kobject_uevent(&s->kobj, KOBJ_ADD);
if (!unmergeable) {
/* Setup first alias */
sysfs_slab_alias(s, s->name);
@@ -5934,7 +5919,7 @@ static int __init slab_sysfs_init(void)
mutex_lock(&slab_mutex);
- slab_kset = kset_create_and_add("slab", &slab_uevent_ops, kernel_kobj);
+ slab_kset = kset_create_and_add("slab", NULL, kernel_kobj);
if (!slab_kset) {
mutex_unlock(&slab_mutex);
pr_err("Cannot register slab subsystem.\n");
_
next prev parent reply other threads:[~2020-06-02 20:10 UTC|newest]
Thread overview: 166+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-02 20:09 incoming Andrew Morton
2020-06-02 20:09 ` [patch 001/128] squashfs: migrate from ll_rw_block usage to BIO Andrew Morton
2020-06-02 20:09 ` [patch 002/128] ocfs2: add missing annotation for dlm_empty_lockres() Andrew Morton
2020-06-02 20:10 ` [patch 003/128] ocfs2: mount shared volume without ha stack Andrew Morton
2020-06-02 20:10 ` [patch 004/128] arch/parisc/include/asm/pgtable.h: remove unused `old_pte' Andrew Morton
2020-06-02 20:10 ` [patch 005/128] vfs: track per-sb writeback errors and report them to syncfs Andrew Morton
2020-06-02 20:10 ` [patch 006/128] fs/buffer.c: record blockdev write errors in super_block that it backs Andrew Morton
2020-06-02 20:10 ` [patch 007/128] usercopy: mark dma-kmalloc caches as usercopy caches Andrew Morton
2020-06-02 20:10 ` [patch 008/128] mm/slub.c: fix corrupted freechain in deactivate_slab() Andrew Morton
2020-06-02 20:10 ` Andrew Morton [this message]
2020-06-02 20:10 ` [patch 010/128] slub: remove kmalloc under list_lock from list_slab_objects() V2 Andrew Morton
2020-06-02 20:10 ` [patch 011/128] mm/slub: fix stack overruns with SLUB_STATS Andrew Morton
2020-06-02 20:10 ` [patch 012/128] Documentation/vm/slub.rst: s/Toggle/Enable/ Andrew Morton
2020-06-02 20:10 ` [patch 013/128] mm, dump_page(): do not crash with invalid mapping pointer Andrew Morton
2020-06-02 20:10 ` [patch 014/128] mm: move readahead prototypes from mm.h Andrew Morton
2020-06-02 20:10 ` [patch 015/128] mm: return void from various readahead functions Andrew Morton
2020-06-02 20:10 ` [patch 016/128] mm: ignore return value of ->readpages Andrew Morton
2020-06-02 20:10 ` [patch 017/128] mm: move readahead nr_pages check into read_pages Andrew Morton
2020-06-02 20:10 ` [patch 018/128] mm: add new readahead_control API Andrew Morton
2020-06-02 20:11 ` [patch 019/128] mm: use readahead_control to pass arguments Andrew Morton
2020-06-02 20:11 ` [patch 020/128] mm: rename various 'offset' parameters to 'index' Andrew Morton
2020-06-02 20:11 ` [patch 021/128] mm: rename readahead loop variable to 'i' Andrew Morton
2020-06-02 20:11 ` [patch 022/128] mm: remove 'page_offset' from readahead loop Andrew Morton
2020-06-02 20:11 ` [patch 023/128] mm: put readahead pages in cache earlier Andrew Morton
2020-06-02 20:11 ` [patch 024/128] mm: add readahead address space operation Andrew Morton
2020-06-02 20:11 ` [patch 025/128] mm: move end_index check out of readahead loop Andrew Morton
2020-06-02 20:11 ` [patch 026/128] mm: add page_cache_readahead_unbounded Andrew Morton
2020-06-02 20:11 ` [patch 027/128] mm: document why we don't set PageReadahead Andrew Morton
2020-06-02 20:11 ` [patch 028/128] mm: use memalloc_nofs_save in readahead path Andrew Morton
2020-06-02 20:11 ` [patch 029/128] fs: convert mpage_readpages to mpage_readahead Andrew Morton
2020-06-02 20:11 ` [patch 030/128] btrfs: convert from readpages to readahead Andrew Morton
2020-06-02 20:11 ` [patch 031/128] erofs: convert uncompressed files " Andrew Morton
2020-06-02 20:11 ` [patch 032/128] erofs: convert compressed " Andrew Morton
2020-06-02 20:11 ` [patch 033/128] ext4: convert " Andrew Morton
2020-06-02 20:11 ` [patch 034/128] ext4: pass the inode to ext4_mpage_readpages Andrew Morton
2020-06-02 20:12 ` [patch 035/128] f2fs: convert from readpages to readahead Andrew Morton
2020-06-02 20:12 ` [patch 036/128] f2fs: pass the inode to f2fs_mpage_readpages Andrew Morton
2020-06-02 20:12 ` [patch 037/128] fuse: convert from readpages to readahead Andrew Morton
2020-06-02 20:12 ` [patch 038/128] iomap: " Andrew Morton
2020-06-02 20:12 ` [patch 039/128] include/linux/pagemap.h: introduce attach/detach_page_private Andrew Morton
2020-06-02 20:12 ` [patch 040/128] md: remove __clear_page_buffers and use attach/detach_page_private Andrew Morton
2020-06-02 20:12 ` [patch 041/128] btrfs: " Andrew Morton
2020-06-02 20:12 ` [patch 042/128] fs/buffer.c: " Andrew Morton
2020-06-02 20:12 ` [patch 043/128] f2fs: " Andrew Morton
2020-06-02 20:12 ` [patch 044/128] iomap: " Andrew Morton
2020-06-02 20:12 ` [patch 045/128] ntfs: replace attach_page_buffers with attach_page_private Andrew Morton
2020-06-02 20:12 ` [patch 046/128] orangefs: use attach/detach_page_private Andrew Morton
2020-06-02 20:12 ` [patch 047/128] buffer_head.h: remove attach_page_buffers Andrew Morton
2020-06-02 20:12 ` [patch 048/128] mm/migrate.c: call detach_page_private to cleanup code Andrew Morton
2020-06-02 20:12 ` [patch 049/128] mm_types.h: change set_page_private to inline function Andrew Morton
2020-06-02 20:12 ` [patch 050/128] mm/filemap.c: remove misleading comment Andrew Morton
2020-06-02 20:12 ` [patch 051/128] mm/page-writeback.c: remove unused variable Andrew Morton
2020-06-02 20:13 ` [patch 052/128] mm/writeback: replace PF_LESS_THROTTLE with PF_LOCAL_THROTTLE Andrew Morton
2020-06-02 20:13 ` [patch 053/128] mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead Andrew Morton
2020-06-02 20:13 ` [patch 054/128] mm/gup.c: update the documentation Andrew Morton
2020-06-02 20:13 ` [patch 055/128] mm/gup: introduce pin_user_pages_unlocked Andrew Morton
2020-06-02 20:13 ` [patch 056/128] ivtv: convert get_user_pages() --> pin_user_pages() Andrew Morton
2020-06-02 20:13 ` [patch 057/128] mm/gup.c: further document vma_permits_fault() Andrew Morton
2020-06-02 20:13 ` [patch 058/128] mm/swapfile: use list_{prev,next}_entry() instead of open-coding Andrew Morton
2020-06-02 20:13 ` [patch 059/128] mm/swap_state: fix a data race in swapin_nr_pages Andrew Morton
2020-06-02 20:13 ` [patch 060/128] mm: swap: properly update readahead statistics in unuse_pte_range() Andrew Morton
2020-06-02 20:13 ` [patch 061/128] mm/swapfile.c: offset is only used when there is more slots Andrew Morton
2020-06-02 20:13 ` [patch 062/128] mm/swapfile.c: explicitly show ssd/non-ssd is handled mutually exclusive Andrew Morton
2020-06-02 20:13 ` [patch 063/128] mm/swapfile.c: remove the unnecessary goto for SSD case Andrew Morton
2020-06-02 20:13 ` [patch 064/128] mm/swapfile.c: simplify the calculation of n_goal Andrew Morton
2020-06-02 20:13 ` [patch 065/128] mm/swapfile.c: remove the extra check in scan_swap_map_slots() Andrew Morton
2020-06-02 20:13 ` [patch 066/128] mm/swapfile.c: found_free could be represented by (tmp < max) Andrew Morton
2020-06-02 20:13 ` [patch 067/128] mm/swapfile.c: tmp is always smaller than max Andrew Morton
2020-06-02 20:13 ` [patch 068/128] mm/swapfile.c: omit a duplicate code by compare tmp and max first Andrew Morton
2020-06-02 20:13 ` [patch 069/128] swap: try to scan more free slots even when fragmented Andrew Morton
2020-06-02 20:14 ` [patch 070/128] mm/swapfile.c: classify SWAP_MAP_XXX to make it more readable Andrew Morton
2020-06-02 20:14 ` [patch 071/128] mm/swapfile.c: __swap_entry_free() always free 1 entry Andrew Morton
2020-06-02 20:14 ` [patch 072/128] mm/swapfile.c: use prandom_u32_max() Andrew Morton
2020-06-02 20:14 ` [patch 073/128] swap: reduce lock contention on swap cache from swap slots allocation Andrew Morton
2020-06-02 20:14 ` [patch 074/128] mm: swapfile: fix /proc/swaps heading and Size/Used/Priority alignment Andrew Morton
2020-06-02 20:14 ` [patch 075/128] include/linux/swap.h: delete meaningless __add_to_swap_cache() declaration Andrew Morton
2020-06-02 20:14 ` [patch 076/128] mm, memcg: add workingset_restore in memory.stat Andrew Morton
2020-06-02 20:14 ` [patch 077/128] mm: memcontrol: simplify value comparison between count and limit Andrew Morton
2020-06-02 20:14 ` [patch 078/128] memcg: expose root cgroup's memory.stat Andrew Morton
2020-06-02 20:14 ` [patch 079/128] mm/memcg: prepare for swap over-high accounting and penalty calculation Andrew Morton
2020-06-02 20:14 ` [patch 080/128] mm/memcg: move penalty delay clamping out of calculate_high_delay() Andrew Morton
2020-06-02 20:14 ` [patch 081/128] mm/memcg: move cgroup high memory limit setting into struct page_counter Andrew Morton
2020-06-02 20:14 ` [patch 082/128] mm/memcg: automatically penalize tasks with high swap use Andrew Morton
2020-06-02 20:14 ` [patch 083/128] memcg: fix memcg_kmem_bypass() for remote memcg charging Andrew Morton
2020-06-02 20:14 ` [patch 084/128] x86: mm: ptdump: calculate effective permissions correctly Andrew Morton
2020-06-02 20:14 ` [patch 085/128] mm: ptdump: expand type of 'val' in note_page() Andrew Morton
2020-06-02 20:14 ` [patch 086/128] /proc/PID/smaps: Add PMD migration entry parsing Andrew Morton
2020-06-02 20:15 ` [patch 087/128] mm/memory: remove unnecessary pte_devmap case in copy_one_pte() Andrew Morton
2020-06-02 20:15 ` [patch 088/128] mm, memory_failure: don't send BUS_MCEERR_AO for action required error Andrew Morton
2020-06-02 20:15 ` [patch 089/128] x86/hyperv: use vmalloc_exec for the hypercall page Andrew Morton
2020-06-02 20:15 ` [patch 090/128] x86: fix vmap arguments in map_irq_stack Andrew Morton
2020-06-02 20:15 ` [patch 091/128] staging: android: ion: use vmap instead of vm_map_ram Andrew Morton
2020-06-02 20:15 ` [patch 092/128] staging: media: ipu3: use vmap instead of reimplementing it Andrew Morton
2020-06-02 20:15 ` [patch 093/128] dma-mapping: use vmap insted " Andrew Morton
2020-06-02 20:15 ` [patch 094/128] powerpc: add an ioremap_phb helper Andrew Morton
2020-06-02 20:15 ` [patch 095/128] powerpc: remove __ioremap_at and __iounmap_at Andrew Morton
2020-06-02 20:15 ` [patch 096/128] mm: remove __get_vm_area Andrew Morton
2020-06-02 20:15 ` [patch 097/128] mm: unexport unmap_kernel_range_noflush Andrew Morton
2020-06-02 20:15 ` [patch 098/128] mm: rename CONFIG_PGTABLE_MAPPING to CONFIG_ZSMALLOC_PGTABLE_MAPPING Andrew Morton
2020-06-02 20:15 ` [patch 099/128] mm: only allow page table mappings for built-in zsmalloc Andrew Morton
2020-06-02 20:15 ` [patch 100/128] mm: pass addr as unsigned long to vb_free Andrew Morton
2020-06-02 20:16 ` [patch 101/128] mm: remove vmap_page_range_noflush and vunmap_page_range Andrew Morton
2020-06-02 20:16 ` [patch 102/128] mm: rename vmap_page_range to map_kernel_range Andrew Morton
2020-06-02 20:16 ` [patch 103/128] mm: don't return the number of pages from map_kernel_range{,_noflush} Andrew Morton
2020-06-02 20:16 ` [patch 104/128] mm: remove map_vm_range Andrew Morton
2020-06-02 20:16 ` [patch 105/128] mm: remove unmap_vmap_area Andrew Morton
2020-06-02 20:16 ` [patch 106/128] mm: remove the prot argument from vm_map_ram Andrew Morton
2020-06-02 20:16 ` [patch 107/128] mm: enforce that vmap can't map pages executable Andrew Morton
2020-06-02 20:16 ` [patch 108/128] gpu/drm: remove the powerpc hack in drm_legacy_sg_alloc Andrew Morton
2020-06-02 20:16 ` [patch 109/128] mm: remove the pgprot argument to __vmalloc Andrew Morton
2020-06-02 20:16 ` [patch 110/128] mm: remove the prot argument to __vmalloc_node Andrew Morton
2020-06-02 20:16 ` [patch 111/128] mm: remove both instances of __vmalloc_node_flags Andrew Morton
2020-06-02 20:16 ` [patch 112/128] mm: remove __vmalloc_node_flags_caller Andrew Morton
2020-06-02 20:16 ` [patch 113/128] mm: switch the test_vmalloc module to use __vmalloc_node Andrew Morton
2020-06-02 20:16 ` [patch 114/128] mm: remove vmalloc_user_node_flags Andrew Morton
2020-06-02 20:17 ` [patch 115/128] arm64: use __vmalloc_node in arch_alloc_vmap_stack Andrew Morton
2020-06-02 20:17 ` [patch 116/128] powerpc: use __vmalloc_node in alloc_vm_stack Andrew Morton
2020-06-02 20:17 ` [patch 117/128] s390: use __vmalloc_node in stack_alloc Andrew Morton
2020-06-02 20:17 ` [patch 118/128] mm: add functions to track page directory modifications Andrew Morton
2020-06-02 20:17 ` [patch 119/128] mm/vmalloc: track which page-table levels were modified Andrew Morton
2020-06-02 20:17 ` [patch 120/128] mm/ioremap: " Andrew Morton
2020-06-02 20:17 ` [patch 121/128] x86/mm/64: implement arch_sync_kernel_mappings() Andrew Morton
2020-06-02 20:17 ` [patch 122/128] x86/mm/32: " Andrew Morton
2020-06-02 20:17 ` [patch 123/128] mm: remove vmalloc_sync_(un)mappings() Andrew Morton
2020-06-02 20:17 ` [patch 124/128] x86/mm: remove vmalloc faulting Andrew Morton
2020-06-02 20:17 ` [patch 125/128] kasan: fix clang compilation warning due to stack protector Andrew Morton
2020-06-02 20:17 ` [patch 126/128] ubsan: entirely disable alignment checks under UBSAN_TRAP Andrew Morton
2020-06-02 20:17 ` [patch 127/128] mm/mm_init.c: report kasan-tag information stored in page->flags Andrew Morton
2020-06-02 20:17 ` [patch 128/128] kasan: move kasan_report() into report.c Andrew Morton
2020-06-02 21:34 ` + maccess-unexport-probe_kernel_write-and-probe_user_write-fix.patch added to -mm tree Andrew Morton
2020-06-02 22:51 ` [folded-merged] lib-make-a-test-module-with-get_count_order-long-fix.patch removed from " Andrew Morton
2020-06-02 22:52 ` [to-be-updated] lib-make-a-test-module-with-get_count_order-long.patch " Andrew Morton
2020-06-02 22:53 ` + lib-test-get_count_order-long-in-test_bitopsc.patch added to " Andrew Morton
2020-06-03 20:08 ` + mm-page_allocc-add-missing-line-breaks.patch " Andrew Morton
2020-06-03 21:15 ` + mm-fold-and-remove-lru_cache_add_anon-and-lru_cache_add_file-fix.patch " Andrew Morton
2020-06-03 22:06 ` [folded-merged] mm-gup-refactor-and-de-duplicate-gup_fast-code-fix.patch removed from " Andrew Morton
2020-06-03 22:07 ` [folded-merged] kasan-stop-tests-being-eliminated-as-dead-code-with-fortify_source-v4.patch " Andrew Morton
2020-06-03 22:08 ` [folded-merged] mm-memmap_init-iterate-over-memblock-regions-rather-that-check-each-pfn-fix.patch " Andrew Morton
2020-06-03 22:08 ` [folded-merged] mm-memmap_init-iterate-over-memblock-regions-rather-that-check-each-pfn-fix-2.patch " Andrew Morton
2020-06-03 22:09 ` [folded-merged] mm-free_area_init-allow-defining-max_zone_pfn-in-descending-order-fix.patch " Andrew Morton
2020-06-03 22:09 ` [folded-merged] mm-free_area_init-allow-defining-max_zone_pfn-in-descending-order-fix-2.patch " Andrew Morton
2020-06-03 22:09 ` [folded-merged] mm-free_area_init-allow-defining-max_zone_pfn-in-descending-order-fix-2-fix.patch " Andrew Morton
2020-06-03 22:10 ` [folded-merged] mmpage_alloccma-conditionally-prefer-cma-pageblocks-for-movable-allocations-fix.patch " Andrew Morton
2020-06-03 22:11 ` [folded-merged] mm-reset-numa-stats-for-boot-pagesets-v3.patch " Andrew Morton
2020-06-03 22:11 ` [folded-merged] khugepaged-add-self-test-fix.patch " Andrew Morton
2020-06-03 22:11 ` [folded-merged] khugepaged-add-self-test-fix-2.patch " Andrew Morton
2020-06-03 22:12 ` [folded-merged] khugepaged-add-self-test-fix-2-fix.patch " Andrew Morton
2020-06-03 22:12 ` [folded-merged] khugepaged-add-self-test-fix-3.patch " Andrew Morton
2020-06-03 22:13 ` [folded-merged] khugepaged-allow-to-collapse-a-page-shared-across-fork-fix.patch " Andrew Morton
2020-06-03 22:13 ` [folded-merged] khugepaged-allow-to-collapse-a-page-shared-across-fork-fix-fix.patch " Andrew Morton
2020-06-03 22:14 ` [folded-merged] khugepaged-introduce-max_ptes_shared-tunable-fix.patch " Andrew Morton
2020-06-03 22:15 ` [folded-merged] hugetlbfs-remove-hugetlb_add_hstate-warning-for-existing-hstate-fix.patch " Andrew Morton
2020-06-03 22:16 ` [folded-merged] mm-memcontrol-switch-to-native-nr_anon_thps-counter-fix.patch " Andrew Morton
2020-06-03 22:17 ` [folded-merged] mm-memcontrol-convert-anon-and-file-thp-to-new-mem_cgroup_charge-api-fix.patch " Andrew Morton
2020-06-03 22:18 ` [folded-merged] mm-memcontrol-drop-unused-try-commit-cancel-charge-api-fix.patch " Andrew Morton
2020-06-03 22:19 ` [folded-merged] mm-memcontrol-make-swap-tracking-an-integral-part-of-memory-control-fix-v2.patch " Andrew Morton
2020-06-03 22:20 ` [folded-merged] mm-memcontrol-charge-swapin-pages-on-instantiation-fix.patch " Andrew Morton
2020-06-03 22:21 ` [folded-merged] mm-fold-and-remove-lru_cache_add_anon-and-lru_cache_add_file-fix.patch " Andrew Morton
2020-06-03 22:21 ` [folded-merged] mm-deactivations-shouldnt-bias-the-lru-balance-fix.patch " Andrew Morton
2020-06-03 22:22 ` [folded-merged] mm-thp-rename-pmd_mknotpresent-as-pmd_mkinvalid-v2.patch " Andrew Morton
2020-06-03 22:23 ` [folded-merged] drivers-base-memoryc-cache-memory-blocks-in-xarray-to-accelerate-lookup-fix.patch " Andrew Morton
2020-06-03 22:24 ` [folded-merged] mm-add-debug_wx-support-fix.patch " Andrew Morton
2020-06-03 22:24 ` [folded-merged] mm-add-debug_wx-support-fix-2.patch " Andrew Morton
2020-06-03 22:24 ` [folded-merged] mm-add-debug_wx-support-fix-3.patch " Andrew Morton
2020-06-03 22:25 ` [folded-merged] riscv-support-debug_wx-fix.patch " Andrew Morton
-- strict thread matches above, loose matches on Subject: below --
2020-06-02 4:44 incoming Andrew Morton
2020-06-02 4:45 ` [patch 009/128] slub: Remove userspace notifier for cache add/remove Andrew Morton
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