Re: [PATCH v11 1/4] mm/tlbbatch: Introduce arch_tlbbatch_should_defer()

[Catalin Marinas]

On Mon, Jul 17, 2023 at 09:10:01PM +0800, Yicong Yang wrote:
> From: Anshuman Khandual <khandual@xxxxxxxxxxxxxxxxxx>
> 
> The entire scheme of deferred TLB flush in reclaim path rests on the
> fact that the cost to refill TLB entries is less than flushing out
> individual entries by sending IPI to remote CPUs. But architecture
> can have different ways to evaluate that. Hence apart from checking
> TTU_BATCH_FLUSH in the TTU flags, rest of the decision should be
> architecture specific.
> 
> Signed-off-by: Anshuman Khandual <khandual@xxxxxxxxxxxxxxxxxx>
> [https://lore.kernel.org/linuxppc-dev/20171101101735.2318-2-khandual@xxxxxxxxxxxxxxxxxx/]
> Signed-off-by: Yicong Yang <yangyicong@xxxxxxxxxxxxx>
> [Rebase and fix incorrect return value type]
> Reviewed-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
> Reviewed-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
> Reviewed-by: Barry Song <baohua@xxxxxxxxxx>
> Reviewed-by: Xin Hao <xhao@xxxxxxxxxxxxxxxxx>
> Tested-by: Punit Agrawal <punit.agrawal@xxxxxxxxxxxxx>

Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>