This series introduces three patches related to the kernel parameters controlling mTHP. The first patch is a straightforward documentation update, correcting the format of the kernel parameter ``thp_anon=``. The second and third patches focus on controlling THP support for shmem via the kernel command line. The second patch introduces a parameter to control the global default huge page allocation policy for the internal shmem mount. The third patch implements a parameter similar to ``thp_anon=``, but for shmem. The goal of these changes is to simplify the configuration of systems that rely on mTHP support for shmem. For instance, a platform with a GPU that benefits from huge pages may want to enable huge pages for shmem. Having these kernel parameters streamlines the configuration process and ensures consistency across setups. v1 -> v2: https://lore.kernel.org/linux-mm/20241027175743.1056710-1-mcanal@xxxxxxxxxx/T/ * [1/4] s/fix the format/fix the doc in the commit's subject (Barry Song & David Hildenbrand) * [1/4] Add Barry's A-b to PATCH 1/3 (Barry Song) * [1/4] s/64KB/64K (David Hildenbrand) * [1/4] Add David's A-b to PATCH 1/3 (David Hildenbrand) * [2/4] Create the function `shmem_valid_huge()` to reduce code-duplication (Baolin Wang) * [3/4] New PATCH: generalize the function `setup_thp_anon()` and add it to common file * [4/4] Fix typo in the documentation: s/shmem_anon/thp_shmem (Barry Song) * [4/4] Reduce code-duplication (Barry Song) Best Regards, - Maíra Maíra Canal (4): mm: fix docs for the kernel parameter ``thp_anon=`` mm: shmem: control THP support through the kernel command line mm: generalize the implementation of ``thp_anon=`` mm: shmem: override mTHP shmem default with a kernel parameter .../admin-guide/kernel-parameters.txt | 19 ++- Documentation/admin-guide/mm/transhuge.rst | 25 +++- include/linux/huge_mm.h | 29 +++++ mm/huge_memory.c | 109 ++++++++---------- mm/shmem.c | 91 +++++++++++++-- 5 files changed, 201 insertions(+), 72 deletions(-) -- 2.46.2
