Kirill A. Shutemov 71a2c112a0 khugepaged: introduce 'max_ptes_shared' tunable ...

'max_ptes_shared' specifies how many pages can be shared across multiple
processes.  Exceeding the number would block the collapse::

	/sys/kernel/mm/transparent_hugepage/khugepaged/max_ptes_shared

A higher value may increase memory footprint for some workloads.

By default, at least half of pages has to be not shared.

[colin.king@canonical.com: fix several spelling mistakes]
  Link: http://lkml.kernel.org/r/20200420084241.65433-1-colin.king@canonical.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: Yang Shi <yang.shi@linux.alibaba.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Link: http://lkml.kernel.org/r/20200416160026.16538-9-kirill.shutemov@linux.intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2020-06-03 20:09:46 -07:00

..

.gitignore

khugepaged: add self test

2020-06-03 20:09:46 -07:00

charge_reserved_hugetlb.sh

hugetlb_cgroup: add hugetlb_cgroup reservation tests

2020-04-02 09:35:32 -07:00

compaction_test.c

selftests: vm: return Kselftest Skip code for skipped tests

2018-06-18 09:11:10 -06:00

config

mm/hmm/test: add selftests for HMM

2020-05-19 16:48:31 -03:00

gup_benchmark.c

mm/gup_benchmark: support pin_user_pages() and related calls

2020-04-02 09:35:27 -07:00

hmm-tests.c

mm/hmm/test: add selftests for HMM

2020-05-19 16:48:31 -03:00

hugepage-mmap.c

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

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

hugepage-shm.c

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

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

hugetlb_reparenting_test.sh

hugetlb_cgroup: add hugetlb_cgroup reservation tests

2020-04-02 09:35:32 -07:00

khugepaged.c

khugepaged: introduce 'max_ptes_shared' tunable

2020-06-03 20:09:46 -07:00

Makefile

khugepaged: add self test

2020-06-03 20:09:46 -07:00

map_fixed_noreplace.c

tools/testing/selftests/vm/map_fixed_noreplace.c: add test for MAP_FIXED_NOREPLACE

2018-10-26 16:38:15 -07:00

map_hugetlb.c

selftests/vm: fix map_hugetlb length used for testing read and write

2020-04-02 09:35:32 -07:00

map_populate.c

tools/testing/selftests/vm/: add MAP_POPULATE test

2018-08-22 10:52:45 -07:00

mlock2-tests.c

selftests: vm: drop dependencies on page flags from mlock2 tests

2020-04-02 09:35:31 -07:00

mlock2.h

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

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

mlock-random-test.c

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

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

mremap_dontunmap.c

selftests: add MREMAP_DONTUNMAP selftest

2020-04-02 09:35:30 -07:00

on-fault-limit.c

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

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

run_vmtests

mm/hmm/test: add selftests for HMM

2020-05-19 16:48:31 -03:00

test_hmm.sh

mm/hmm/test: add selftests for HMM

2020-05-19 16:48:31 -03:00

test_vmalloc.sh

tools: mark 'test_vmalloc.sh' executable

2019-03-11 10:10:29 -07:00

thuge-gen.c

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

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

transhuge-stress.c

selftests/vm/transhuge-stress: stress test for memory compaction

2014-10-09 22:26:01 -04:00

userfaultfd.c

userfaultfd: selftests: add write-protect test

2020-04-07 10:43:40 -07:00

va_128TBswitch.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 485

2019-06-19 17:09:52 +02:00

virtual_address_range.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191

2019-05-30 11:29:21 -07:00

write_hugetlb_memory.sh

hugetlb_cgroup: add hugetlb_cgroup reservation tests

2020-04-02 09:35:32 -07:00

write_to_hugetlbfs.c

selftests/vm/write_to_hugetlbfs.c: fix unused variable warning

2020-05-23 10:26:31 -07:00