From: Anshuman Khandual <anshuman.khandual@arm.com>
To: Yicong Yang <yangyicong@huawei.com>,
akpm@linux-foundation.org, linux-mm@kvack.org,
linux-arm-kernel@lists.infradead.org, x86@kernel.org,
catalin.marinas@arm.com, will@kernel.org,
linux-doc@vger.kernel.org
Cc: wangkefeng.wang@huawei.com, darren@os.amperecomputing.com,
peterz@infradead.org, yangyicong@hisilicon.com,
Nadav Amit <namit@vmware.com>,
guojian@oppo.com, linux-riscv@lists.infradead.org,
linux-s390@vger.kernel.org, zhangshiming@oppo.com,
lipeifeng@oppo.com, corbet@lwn.net,
Barry Song <21cnbao@gmail.com>, Mel Gorman <mgorman@suse.de>,
linux-mips@vger.kernel.org, arnd@arndb.de, realmz6@gmail.com,
Barry Song <v-songbaohua@oppo.com>,
openrisc@lists.librecores.org, prime.zeng@hisilicon.com,
xhao@linux.alibaba.com, linux-kernel@vger.kernel.org,
huzhanyuan@oppo.com, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v3 4/4] arm64: support batched/deferred tlb shootdown during page reclamation
Date: Wed, 21 Sep 2022 12:23:40 +0530 [thread overview]
Message-ID: <888da5f3-104c-3929-c21e-c710922d6f1e@arm.com> (raw)
In-Reply-To: <20220822082120.8347-5-yangyicong@huawei.com>
On 8/22/22 13:51, Yicong Yang wrote:
> +static inline void arch_tlbbatch_add_mm(struct arch_tlbflush_unmap_batch *batch,
> + struct mm_struct *mm,
> + unsigned long uaddr)
> +{
> + __flush_tlb_page_nosync(mm, uaddr);
> +}
> +
> +static inline void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch)
> +{
> + dsb(ish);
> +}
Just wondering if arch_tlbbatch_add_mm() could also detect continuous mapping
TLB invalidation requests on a given mm and try to generate a range based TLB
invalidation such as flush_tlb_range().
struct arch_tlbflush_unmap_batch via task->tlb_ubc->arch can track continuous
ranges while being queued up via arch_tlbbatch_add_mm(), any range formed can
later be flushed in subsequent arch_tlbbatch_flush() ?
OR
It might not be worth the effort and complexity, in comparison to performance
improvement, TLB range flush brings in ?
next prev parent reply other threads:[~2022-09-21 6:54 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-22 8:21 [PATCH v3 0/4] mm: arm64: bring up BATCHED_UNMAP_TLB_FLUSH Yicong Yang
2022-08-22 8:21 ` [PATCH v3 1/4] Revert "Documentation/features: mark BATCHED_UNMAP_TLB_FLUSH doesn't apply to ARM64" Yicong Yang
2022-09-09 4:26 ` Anshuman Khandual
2022-09-09 4:40 ` Barry Song
2022-08-22 8:21 ` [PATCH v3 2/4] mm/tlbbatch: Introduce arch_tlbbatch_should_defer() Yicong Yang
2022-08-24 9:40 ` Kefeng Wang
2022-09-09 4:16 ` Anshuman Khandual
2022-08-22 8:21 ` [PATCH v3 3/4] mm: rmap: Extend tlbbatch APIs to fit new platforms Yicong Yang
2022-08-24 9:43 ` Kefeng Wang
2022-09-09 4:51 ` Anshuman Khandual
2022-09-09 5:25 ` Barry Song
2022-08-22 8:21 ` [PATCH v3 4/4] arm64: support batched/deferred tlb shootdown during page reclamation Yicong Yang
2022-08-24 9:46 ` Kefeng Wang
2022-09-09 5:24 ` Anshuman Khandual
2022-09-09 5:35 ` Barry Song
2022-09-09 6:32 ` Yicong Yang
2022-09-15 6:07 ` Anshuman Khandual
2022-09-15 6:42 ` Barry Song
2022-09-15 14:31 ` Nadav Amit
2022-09-19 2:46 ` Anshuman Khandual
2022-09-19 4:24 ` Anshuman Khandual
2022-09-19 4:53 ` Barry Song
2022-09-19 5:08 ` Barry Song
2022-09-20 3:00 ` Anshuman Khandual
2022-09-20 3:39 ` Barry Song
2022-09-20 8:45 ` Anshuman Khandual
2022-09-21 1:50 ` Barry Song
2022-09-21 1:51 ` Barry Song
2022-09-21 3:33 ` Anshuman Khandual
2022-09-21 6:53 ` Anshuman Khandual [this message]
2022-09-21 7:15 ` Barry Song
2022-09-21 7:17 ` Nadav Amit
2022-09-22 3:15 ` Anshuman Khandual
2022-09-06 8:53 ` [PATCH v3 0/4] mm: arm64: bring up BATCHED_UNMAP_TLB_FLUSH Yicong Yang
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