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b4e98d9ac7
linux_dsm_epyc7002/arch/powerpc/mm
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Kirill A. Shutemov b4e98d9ac7 mm: account pud page tables 
On a machine with 5-level paging support a process can allocate
significant amount of memory and stay unnoticed by oom-killer and memory
cgroup.  The trick is to allocate a lot of PUD page tables.  We don't
account PUD page tables, only PMD and PTE.

We already addressed the same issue for PMD page tables, see commit
dc6c9a35b6 ("mm: account pmd page tables to the process").
Introduction of 5-level paging brings the same issue for PUD page
tables.

The patch expands accounting to PUD level.

[kirill.shutemov@linux.intel.com: s/pmd_t/pud_t/]
  Link: http://lkml.kernel.org/r/20171004074305.x35eh5u7ybbt5kar@black.fi.intel.com
[heiko.carstens@de.ibm.com: s390/mm: fix pud table accounting]
  Link: http://lkml.kernel.org/r/20171103090551.18231-1-heiko.carstens@de.ibm.com
Link: http://lkml.kernel.org/r/20171002080427.3320-1-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-11-15 18:21:04 -08:00
..
8xx_mmu.c powerpc/8xx: mark init functions with __init 2017-08-15 22:55:54 +10:00
40x_mmu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
44x_mmu.c powerpc: Delete __cpuinit usage from all users 2013-07-01 11:10:36 +10:00
copro_fault.c powerpc/mm: Update PROTFAULT handling in the page fault path 2017-02-15 20:02:39 +11:00
dma-noncoherent.c powerpc/mm: Rename map_page() to map_kernel_page() on 32-bit 2017-06-05 19:59:03 +10:00
dump_hashpagetable.c powerpc/mm: Use seq_putc() in two functions 2017-09-01 16:42:52 +10:00
dump_linuxpagetables.c powerpc/mm: Use seq_putc() in two functions 2017-09-01 16:42:52 +10:00
fault.c powerpc/8xx: Use symbolic names for DSISR bits in DSI 2017-08-10 23:32:20 +10:00
fsl_booke_mmu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
hash64_4k.c powerpc/mm: Fix lazy icache flush on pre-POWER5 2016-11-29 23:59:40 +11:00
hash64_64k.c powerpc/mm: Fix lazy icache flush on pre-POWER5 2016-11-29 23:59:40 +11:00
hash_low_32.S powerpc: fix location of two EXPORT_SYMBOL 2017-09-01 16:42:45 +10:00
hash_native_64.c powerpc/mm: Wire up hpte_removebolted for powernv 2017-07-02 20:40:28 +10:00
hash_utils_64.c powerpc/mm: Use mm_is_thread_local() instread of open-coding 2017-08-23 22:27:45 +10:00
highmem.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hugepage-hash64.c powerpc/mm: Move hash table ops to a separate structure 2016-07-21 18:59:09 +10:00
hugetlbpage-book3e.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hugetlbpage-hash64.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hugetlbpage-radix.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hugetlbpage.c mm: account pud page tables 2017-11-15 18:21:04 -08:00
init_32.c powerpc/mm/hugetlb: Add support for reserving gigantic huge pages via kernel command line 2017-08-16 14:56:12 +10:00
init_64.c powerpc/mm: Fix section mismatch warning in early_check_vec5() 2017-08-10 23:40:51 +10:00
init-common.c Merge branch 'topic/ppc-kvm' into next 2017-02-14 17:18:29 +11:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mem.c powerpc/8xx: Getting rid of remaining use of CONFIG_8xx 2017-08-10 23:32:12 +10:00
mmap.c powerpc,mmap: properly account for stack randomization in mmap_base 2017-07-12 16:26:03 -07:00
mmu_context_book3s64.c powerpc/mm: Optimize detection of thread local mm's 2017-08-23 22:28:38 +10:00
mmu_context_hash32.c powerpc: Remove power3 from comments 2014-07-28 14:10:26 +10:00
mmu_context_iommu.c Merge branch 'topic/ppc-kvm' into next 2017-04-28 20:19:37 +10:00
mmu_context_nohash.c powerpc/mm/nohash: MM_SLICE is only used by book3s 64 2017-03-31 23:09:47 +11:00
mmu_context.c powerpc/mm: Make switch_mm_irqs_off() out of line 2017-08-23 22:48:51 +10:00
mmu_decl.h powerpc/8xx: Getting rid of remaining use of CONFIG_8xx 2017-08-10 23:32:12 +10:00
numa.c Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:56:58 -08:00
pgtable_32.c powerpc/mm: Call flush_tlb_kernel_range with interrupts enabled 2017-10-04 22:15:30 +11:00
pgtable_64.c powerpc/mm/book3s64: Make KERN_IO_START a variable 2017-08-08 19:37:04 +10:00
pgtable-book3e.c powerpc/mm: Make page table size a variable 2016-05-01 18:32:48 +10:00
pgtable-book3s64.c powerpc/mm/cxl: Add the fault handling cpu to mm cpumask 2017-08-17 23:31:52 +10:00
pgtable-hash64.c powerpc/mm: Use mm_is_thread_local() instread of open-coding 2017-08-23 22:27:45 +10:00
pgtable-radix.c powerpc/mm/radix: Prettify mapped memory range print out 2017-08-31 14:26:42 +10:00
pgtable.c powerpc/mm: Fix typo in set_pte_at() 2017-02-17 22:16:25 +11:00
ppc_mmu_32.c powerpc32: refactor x_mapped_by_bats() and x_mapped_by_tlbcam() together 2016-03-11 17:18:02 -06:00
slb_low.S powerpc/mm/hash64: Make vmalloc 56T on hash 2017-08-08 19:37:05 +10:00
slb.c powerpc/64s: Rename slb_allocate_realmode() to slb_allocate() 2017-06-21 16:18:33 +10:00
slice.c mm: larger stack guard gap, between vmas 2017-06-19 21:50:20 +08:00
subpage-prot.c powerpc/mm/hash: Free the subpage_prot_table correctly 2017-07-27 13:05:50 +10:00
tlb_hash32.c powerpc/mm: remove flush_tlb_page_nohash 2016-08-01 11:15:13 +10:00
tlb_hash64.c powerpc/mm: Use mm_is_thread_local() instread of open-coding 2017-08-23 22:27:45 +10:00
tlb_low_64e.S powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
tlb_nohash_low.S powerpc/8xx: Getting rid of remaining use of CONFIG_8xx 2017-08-10 23:32:12 +10:00
tlb_nohash.c powerpc/nohash: Fix use of mmu_has_feature() in setup_initial_memory_limit() 2017-04-11 07:46:04 +10:00
tlb-radix.c powerpc/64s/radix: Fix preempt imbalance in TLB flush 2017-10-25 18:00:00 +02:00
vphn.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vphn.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00