Kirill A. Shutemov 4afaf6ea65 mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y ...

commit 83e3c48729d9ebb7af5a31a504f3fd6aff0348c4 upstream.

Size of the mem_section[] array depends on the size of the physical address space.

In preparation for boot-time switching between paging modes on x86-64
we need to make the allocation of mem_section[] dynamic, because otherwise
we waste a lot of RAM: with CONFIG_NODE_SHIFT=10, mem_section[] size is 32kB
for 4-level paging and 2MB for 5-level paging mode.

The patch allocates the array on the first call to sparse_memory_present_with_active_regions().

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@suse.de>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/20170929140821.37654-2-kirill.shutemov@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-12-25 14:26:15 +01:00

..

kasan

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

backing-dev.c

mm/backing-dev.c: fix an error handling path in 'cgwb_create()'

2017-09-11 14:16:44 -06:00

balloon_compaction.c

mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY

2017-09-08 18:26:46 -07:00

bootmem.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cleancache.c

fs: switch ->s_uuid to uuid_t

2017-06-05 16:59:12 +02:00

cma_debug.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cma.c

mm/cma.c: take __GFP_NOWARN into account in cma_alloc()

2017-10-13 16:18:32 -07:00

cma.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

compaction.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

debug_page_ref.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

debug.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

dmapool.c

lib/vsprintf.c: remove %Z support

2017-02-27 18:43:47 -08:00

early_ioremap.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

fadvise.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

failslab.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

filemap.c

mm: have filemap_check_and_advance_wb_err clear AS_EIO/AS_ENOSPC

2017-10-03 17:54:24 -07:00

frame_vector.c

mm: fail get_vaddr_frames() for filesystem-dax mappings

2017-12-05 11:26:28 +01:00

frontswap.c

mm, frontswap: convert frontswap_enabled to static key

2016-07-26 16:19:19 -07:00

gup.c

mm, x86/mm: Fix performance regression in get_user_pages_fast()

2017-12-10 13:40:43 +01:00

highmem.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

hmm.c

mm/hmm: avoid bloating arch that do not make use of HMM

2017-09-08 18:26:46 -07:00

huge_memory.c

mm, thp: Do not make page table dirty unconditionally in touch_p[mu]d()

2017-12-05 11:26:28 +01:00

hugetlb_cgroup.c

mm, hugetlb_cgroup: round limit_in_bytes down to hugepage size

2016-05-20 17:58:30 -07:00

hugetlb.c

mm/hugetlb: fix NULL-pointer dereference on 5-level paging machine

2017-12-05 11:26:30 +01:00

hwpoison-inject.c

mm: hwpoison: call shake_page() unconditionally

2017-05-03 15:52:12 -07:00

init-mm.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

internal.h

mm, oom: do not rely on TIF_MEMDIE for memory reserves access

2017-09-06 17:27:30 -07:00

interval_tree.c

lib/interval_tree: fast overlap detection

2017-09-08 18:26:49 -07:00

Kconfig

mm/hmm: avoid bloating arch that do not make use of HMM

2017-09-08 18:26:46 -07:00

Kconfig.debug

mm: enable page poisoning early at boot

2017-05-03 15:52:10 -07:00

khugepaged.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

kmemcheck.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

kmemleak-test.c

mm: convert printk(KERN_<LEVEL> to pr_<level>

2016-03-17 15:09:34 -07:00

kmemleak.c

mm: kmemleak: treat vm_struct as alternative reference to vmalloc'ed objects

2017-07-06 16:24:34 -07:00

ksm.c

ksm: fix unlocked iteration over vmas in cmp_and_merge_page()

2017-10-03 17:54:23 -07:00

list_lru.c

mm: memcontrol: use vmalloc fallback for large kmem memcg arrays

2017-10-03 17:54:25 -07:00

maccess.c

x86: remove more uaccess_32.h complexity

2016-05-22 17:21:27 -07:00

madvise.c

mm/madvise.c: fix madvise() infinite loop under special circumstances

2017-12-05 11:26:29 +01:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

memblock.c

mm/memblock.c: reversed logic in memblock_discard()

2017-08-25 16:12:46 -07:00

memcontrol.c

mm, memcg: fix mem_cgroup_swapout() for THPs

2017-12-05 11:26:29 +01:00

memory_hotplug.c

mm/memory_hotplug: define find_{smallest|biggest}_section_pfn as unsigned long

2017-10-03 17:54:26 -07:00

memory-failure.c

x86/mm, mm/hwpoison: Clear PRESENT bit for kernel 1:1 mappings of poison pages

2017-08-17 10:30:49 +02:00

memory.c

mm/device-public-memory: fix edge case in _vm_normal_page()

2017-10-03 17:54:25 -07:00

mempolicy.c

mm/mempolicy: fix NUMA_INTERLEAVE_HIT counter

2017-10-13 16:18:32 -07:00

mempool.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

memtest.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

migrate.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mincore.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mlock.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mm_init.c

mm: convert printk(KERN_<LEVEL> to pr_<level>

2016-03-17 15:09:34 -07:00

mmap.c

mm, oom_reaper: fix memory corruption

2017-12-20 10:10:18 +01:00

mmu_context.c

sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>

2017-03-02 08:42:38 +01:00

mmu_notifier.c

mm/mmu_notifier: kill invalidate_page

2017-08-31 16:13:00 -07:00

mmzone.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mprotect.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mremap.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

msync.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

nobootmem.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

nommu.c

Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-09-14 18:13:32 -07:00

oom_kill.c

mm, oom_reaper: fix memory corruption

2017-12-20 10:10:18 +01:00

page_alloc.c

mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y

2017-12-25 14:26:15 +01:00

page_counter.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

page_ext.c

mm/page_ext.c: check if page_ext is not prepared

2017-11-24 08:37:05 +01:00

page_idle.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

page_io.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

page_isolation.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

page_owner.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

page_poison.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

page_vma_mapped.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

page-writeback.c

mm: rename global_page_state to global_zone_page_state

2017-09-06 17:27:29 -07:00

pagewalk.c

mm/pagewalk.c: report holes in hugetlb ranges

2017-11-24 08:37:04 +01:00

percpu-internal.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

percpu-km.c

percpu: replace area map allocator with bitmap

2017-07-26 17:41:05 -04:00

percpu-stats.c

percpu: fix starting offset for chunk statistics traversal

2017-09-27 14:45:57 -07:00

percpu-vm.c

percpu: fix static checker warnings in pcpu_destroy_chunk

2017-06-29 11:23:38 -04:00

percpu.c

mm, percpu: add support for __GFP_NOWARN flag

2017-10-19 13:13:49 +01:00

pgtable-generic.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

process_vm_access.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/mm.h>

2017-03-02 08:42:28 +01:00

quicklist.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

readahead.c

mm: don't cap request size based on read-ahead setting

2016-12-12 18:55:08 -08:00

rmap.c

lib/interval_tree: fast overlap detection

2017-09-08 18:26:49 -07:00

rodata_test.c

mm: fix RODATA_TEST failure "rodata_test: test data was not read only"

2017-10-03 17:54:24 -07:00

shmem.c

mm: treewide: remove GFP_TEMPORARY allocation flag

2017-09-13 18:53:16 -07:00

slab_common.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

slab.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

slab.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

slob.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

slub.c

slub: fix sysfs duplicate filename creation when slub_debug=O

2017-12-14 09:53:10 +01:00

sparse-vmemmap.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

sparse.c

mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y

2017-12-25 14:26:15 +01:00

swap_cgroup.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

swap_slots.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

swap_state.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

swap.c

mm: avoid marking swap cached page as lazyfree

2017-10-03 17:54:24 -07:00

swapfile.c

mm, swap: fix race between swap count continuation operations

2017-11-03 07:39:19 -07:00

truncate.c

mm/truncate.c: fix THP handling in invalidate_mapping_pages()

2017-07-10 16:32:32 -07:00

usercopy.c

mm/usercopy: Drop extra is_vmalloc_or_module() check

2017-04-05 12:30:18 -07:00

userfaultfd.c

userfaultfd: shmem: wire up shmem_mfill_zeropage_pte

2017-09-06 17:27:28 -07:00

util.c

mm: rename global_page_state to global_zone_page_state

2017-09-06 17:27:29 -07:00

vmacache.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

vmalloc.c

Revert "vmalloc: back off when the current task is killed"

2017-10-13 16:18:32 -07:00

vmpressure.c

mm, vmpressure: pass-through notification support

2017-07-10 16:32:31 -07:00

vmscan.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

vmstat.c

mm: consider the number in local CPUs when reading NUMA stats

2017-09-08 18:26:47 -07:00

workingset.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

z3fold.c

mm/z3fold.c: use kref to prevent page free/compact race

2017-11-30 08:40:44 +00:00

zbud.c

mm/zbud.c: use list_last_entry() instead of list_tail_entry()

2016-01-15 11:40:52 -08:00

zpool.c

mm: zsmalloc: constify struct zs_pool name

2015-11-06 17:50:42 -08:00

zsmalloc.c

zsmalloc: calling zs_map_object() from irq is a bug

2017-12-14 09:53:10 +01:00

zswap.c

mm/zswap.c: delete an error message for a failed memory allocation in zswap_dstmem_prepare()

2017-07-06 16:24:35 -07:00