Messages in this thread | | | From | Muchun Song <> | Subject | [PATCH v9 0/4] add hugetlb_optimize_vmemmap sysctl | Date | Fri, 29 Apr 2022 20:18:12 +0800 |
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This series is based on next-20220428.
This series amis to add hugetlb_optimize_vmemmap sysctl to enable or disable the feature of optimizing vmemmap pages associated with HugeTLB pages.
v9: - Go back to v3 since checking the size of struct page at config time is very complex.
v8: - Fix compilation (scripts/selinux/mdp/mdp.c) error when CONFIG_SECURITY_SELINUX is selected.
v7: - Fix circular dependency issue reported by kernel test robot. - Introduce CONFIG_HUGETLB_PAGE_HAS_OPTIMIZE_VMEMMAP instead of STRUCT_PAGE_SIZE_IS_POWER_OF_2. - Add more comments into vm.rst to explain hugetlb_optimize_vmemmap (Andrew). - Drop the patch "sysctl: allow to set extra1 to SYSCTL_ONE". - Add a new patch "use kstrtobool for hugetlb_vmemmap param parsing". - Reuse static_key's refcount to count the number of HugeTLB pages with vmemmap pages optimized to simplify the lock scheme.
v6: - Remove "make syncconfig" from Kbuild.
v5: - Fix not working properly if one is workig off of a very clean build reported by Luis Chamberlain. - Add Suggested-by for Luis Chamberlain.
v4: - Introduce STRUCT_PAGE_SIZE_IS_POWER_OF_2 inspired by Luis.
v3: - Add pr_warn_once() (Mike). - Handle the transition from enabling to disabling (Luis)
v2: - Fix compilation when !CONFIG_MHP_MEMMAP_ON_MEMORY reported by kernel test robot <lkp@intel.com>. - Move sysctl code from kernel/sysctl.c to mm/hugetlb_vmemmap.c.
Muchun Song (4): mm: hugetlb_vmemmap: disable hugetlb_optimize_vmemmap when struct page crosses page boundaries mm: memory_hotplug: override memmap_on_memory when hugetlb_free_vmemmap=on mm: hugetlb_vmemmap: use kstrtobool for hugetlb_vmemmap param parsing mm: hugetlb_vmemmap: add hugetlb_optimize_vmemmap sysctl
Documentation/admin-guide/kernel-parameters.txt | 6 +- Documentation/admin-guide/sysctl/vm.rst | 30 +++++++ include/linux/memory_hotplug.h | 9 ++ mm/hugetlb_vmemmap.c | 104 ++++++++++++++++++++---- mm/hugetlb_vmemmap.h | 4 +- mm/memory_hotplug.c | 27 ++++-- 6 files changed, 155 insertions(+), 25 deletions(-)
-- 2.11.0
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