linux-kernel - [PATCH v4 0/3] Optimize tlbflush path

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Message-Id: <20190822075151.24838-1-atish.patra@wdc.com>
Date:   Thu, 22 Aug 2019 00:51:48 -0700
From:   Atish Patra <atish.patra@....com>
To:     linux-kernel@...r.kernel.org
Cc:     Atish Patra <atish.patra@....com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linux-riscv@...ts.infradead.org,
        Palmer Dabbelt <palmer@...ive.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Christoph Hellwig <hch@....de>, Anup Patel <Anup.Patel@....com>
Subject: [PATCH v4 0/3] Optimize tlbflush path

This series adds few optimizations to reduce the trap cost in the tlb
flush path. We should only make SBI calls to remote tlb flush only if
absolutely required. 

This series is based on Christoph's series:

http://lists.infradead.org/pipermail/linux-riscv/2019-August/006148.html

Changes from v3->v4
1. Simplify the local vs remote usecase.
2. Reorder the patches in the series.

Changes from v2->v3:
1. Split the patches into smaller one per optimization.

Atish Patra (3):
RISC-V: Do not invoke SBI call if cpumask is empty
RISC-V: Issue a local tlbflush if possible.
RISC-V: Issue a tlb page flush if possible

arch/riscv/mm/tlbflush.c | 25 +++++++++++++++++++++++--
1 file changed, 23 insertions(+), 2 deletions(-)

--
2.21.0