OSCL-LXR

A test for the patch "Allow compaction of unevictable pages". With this patch we should be able to allocate at least 1/4 of RAM in huge pages. Without the patch much less is allocated.

HMM stands for Heterogeneous Memory Management, it is a helper layer inside the linux kernel to help device drivers mirror a process address space in the device.

hugepage-mmap: Example of using huge page memory in a user application using the mmap system call.

hugepage-mremap: Example of remapping huge page memory in a user application using the mremap system call.

hugepage-shm: Example of using huge page memory in a user application using Sys V shared memory system calls.

A test case of using hugepage memory in a user application using the mmap system call with MAP_HUGETLB flag.

hugepage-madvise: Basic functional testing of madvise MADV_DONTNEED and MADV_REMOVE on hugetlb mappings.

Example of using hugepage memory in a user application using the mmap system call with MAP_HUGETLB flag.

The main purpose of the tests here is to exercise the migration entry code paths in the kernel.

It tests the mlock/mlock2() when they are invoked on randomly memory region.

A test of splitting PMD THPs and PTE-mapped THPs from a specified virtual address range in a process via <debugfs>/split_huge_pages interface.

Test selecting other page sizes for mmap/shmget.

Stress test for transparent huge pages, memory compaction and migration. Authors: Konstantin Khlebnikov <gmail.com">koct9i@gmail.com> This is free and unencumbered software released into the public domain.

Authors: Kirill A. Shutemov <linux.intel.com">kirill.shutemov@linux.intel.com> Authors: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com">aneesh.kumar@linux.vnet.ibm.com>

This program reserves and uses hugetlb memory, supporting a bunch of scenarios needed by the charged_reserved_hugetlb.sh test.