Re: [PATCH] arm64: mm: enable per pmd page table lock
From: Anshuman Khandual <hidden>
Date: 2019-02-19 03:08:57
Also in:
linux-arch, linux-mm, lkml
On 02/15/2019 02:46 AM, Yu Zhao wrote:
Switch from per mm_struct to per pmd page table lock by enabling ARCH_ENABLE_SPLIT_PMD_PTLOCK. This provides better granularity for large system. I'm not sure if there is contention on mm->page_table_lock. Given the option comes at no cost (apart from initializing more spin locks), why not enable it now.
This has similar changes to what I had posted part of the general page table page accounting clean up series on arm64 last month. https://www.spinics.net/lists/arm-kernel/msg701954.html _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel