| Message ID | 20220516102211.41557-1-songmuchun@bytedance.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | add hugetlb_optimize_vmemmap sysctl | expand |
On Mon, 16 May 2022 18:22:04 +0800 Muchun Song <songmuchun@bytedance.com> wrote: > This series amis to add hugetlb_optimize_vmemmap sysctl to enable or disable > the feature of optimizing vmemmap pages associated with HugeTLB pages. > > v12: > - Add patch 3 and patch 4 to handle the coexistence of hugetlb_free_vmemmap > and memory_hotplug.memmap_on_memory (David). > - Remove Reviewed-by from Mike in the last parch since it is changed. v11 is in mm-stable now, so please send patches against that. AFAICT that will be quite straightforward.
On Mon, May 16, 2022 at 11:46:20AM -0700, Andrew Morton wrote: > On Mon, 16 May 2022 18:22:04 +0800 Muchun Song <songmuchun@bytedance.com> wrote: > > > This series amis to add hugetlb_optimize_vmemmap sysctl to enable or disable > > the feature of optimizing vmemmap pages associated with HugeTLB pages. > > > > v12: > > - Add patch 3 and patch 4 to handle the coexistence of hugetlb_free_vmemmap > > and memory_hotplug.memmap_on_memory (David). > > - Remove Reviewed-by from Mike in the last parch since it is changed. > > v11 is in mm-stable now, so please send patches against that. AFAICT > that will be quite straightforward. > IIUC, the mm-stable is introduced recently, and we consider those commits in mm-stable are stable (meanning the commit sha1 is stable as well). I'll send a new patchset based on mm-stable. Thanks.
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. v12: - Add patch 3 and patch 4 to handle the coexistence of hugetlb_free_vmemmap and memory_hotplug.memmap_on_memory (David). - Remove Reviewed-by from Mike in the last parch since it is changed. v11: - Collect Reviewed-by from Mike. - Remove hugetlb_optimize_vmemmap_enabled() check from flush_free_hpage_work(). v10: - Collect Reviewed-by from Mike. - Remove hugetlb_optimize_vmemmap_enabled() check from hugetlb_optimize_vmemmap_pages() (Mike). - Add more explanation to Documentation/admin-guide/sysctl/vm.rst. - Fix cannot disable the feature via hugetlb_optimize_vmemmap sysctl (Mike). - Update patch 2's commit log (Mike). 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 (7): mm: hugetlb_vmemmap: disable hugetlb_optimize_vmemmap when struct page crosses page boundaries mm: hugetlb_vmemmap: use kstrtobool for hugetlb_vmemmap param parsing mm: memory_hotplug: enumerate all supported section flags mm: hotplug: introduce SECTION_CANNOT_OPTIMIZE_VMEMMAP mm: hugetlb_vmemmap: remove hugetlb_optimize_vmemmap_enabled() sysctl: handle table->maxlen properly for proc_dobool mm: hugetlb_vmemmap: add hugetlb_optimize_vmemmap sysctl Documentation/admin-guide/kernel-parameters.txt | 22 +++---- Documentation/admin-guide/sysctl/vm.rst | 38 ++++++++++++ arch/arm64/mm/flush.c | 13 +--- fs/lockd/svc.c | 2 +- include/linux/kconfig.h | 1 + include/linux/mmzone.h | 54 +++++++++++++--- include/linux/page-flags.h | 16 +---- kernel/sysctl.c | 22 ++++--- mm/hugetlb_vmemmap.c | 82 ++++++++++++++++++------- mm/memory_hotplug.c | 7 ++- mm/sparse.c | 7 +++ 11 files changed, 186 insertions(+), 78 deletions(-)