diff options
Diffstat (limited to 'Documentation/sysctl')
| -rw-r--r-- | Documentation/sysctl/vm.txt | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt index 5025ff9307e6..ff234d229cbb 100644 --- a/Documentation/sysctl/vm.txt +++ b/Documentation/sysctl/vm.txt @@ -30,7 +30,6 @@ Currently, these files are in /proc/sys/vm: - dirty_writeback_centisecs - drop_caches - extfrag_threshold -- hugepages_treat_as_movable - hugetlb_shm_group - laptop_mode - legacy_va_layout @@ -261,30 +260,6 @@ any throttling. ============================================================== -hugepages_treat_as_movable - -This parameter controls whether we can allocate hugepages from ZONE_MOVABLE -or not. If set to non-zero, hugepages can be allocated from ZONE_MOVABLE. -ZONE_MOVABLE is created when kernel boot parameter kernelcore= is specified, -so this parameter has no effect if used without kernelcore=. - -Hugepage migration is now available in some situations which depend on the -architecture and/or the hugepage size. If a hugepage supports migration, -allocation from ZONE_MOVABLE is always enabled for the hugepage regardless -of the value of this parameter. -IOW, this parameter affects only non-migratable hugepages. - -Assuming that hugepages are not migratable in your system, one usecase of -this parameter is that users can make hugepage pool more extensible by -enabling the allocation from ZONE_MOVABLE. This is because on ZONE_MOVABLE -page reclaim/migration/compaction work more and you can get contiguous -memory more likely. Note that using ZONE_MOVABLE for non-migratable -hugepages can do harm to other features like memory hotremove (because -memory hotremove expects that memory blocks on ZONE_MOVABLE are always -removable,) so it's a trade-off responsible for the users. - -============================================================== - hugetlb_shm_group hugetlb_shm_group contains group id that is allowed to create SysV |