Re: [PATCH v3 4/4] arm64: support batched/deferred tlb shootdown during page reclamation
From: Anshuman Khandual <hidden>
Date: 2022-09-20 03:00:38
Also in:
linux-arm-kernel, linux-doc, linux-mips, linux-mm, linux-riscv, linux-s390, lkml
On 8/22/22 13:51, Yicong Yang wrote:
+static inline bool arch_tlbbatch_should_defer(struct mm_struct *mm)
+{
+ return true;
+}This needs to be conditional on systems, where there will be performance improvements, and should not just be enabled all the time on all systems. num_online_cpus() > X, which does not hold any cpu hotplug lock would be a good metric ?