Re: [PATCH 5/5] RISC-V: Move to queued RW locks

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To: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
Subject: Re: [PATCH 5/5] RISC-V: Move to queued RW locks
From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Thu, 17 Mar 2022 10:47:35 +0100
Cc: linux-riscv@xxxxxxxxxxxxxxxxxxx, jonas@xxxxxxxxxxxx, stefan.kristiansson@xxxxxxxxxxxxx, shorne@xxxxxxxxx, mingo@xxxxxxxxxx, Will Deacon <will@xxxxxxxxxx>, longman@xxxxxxxxxx, boqun.feng@xxxxxxxxx, Paul Walmsley <paul.walmsley@xxxxxxxxxx>, Palmer Dabbelt <palmer@xxxxxxxxxxx>, aou@xxxxxxxxxxxxxxxxx, Arnd Bergmann <arnd@xxxxxxxx>, jszhang@xxxxxxxxxx, wangkefeng.wang@xxxxxxxxxx, openrisc@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx
In-reply-to: <20220316232600.20419-6-palmer@rivosinc.com>
References: <20220316232600.20419-1-palmer@rivosinc.com> <20220316232600.20419-6-palmer@rivosinc.com>

On Wed, Mar 16, 2022 at 04:26:00PM -0700, Palmer Dabbelt wrote:
> From: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
> 
> With the move to fair spinlocks, we might as well move to fair rwlocks.

s/might as well/can/ ?

Note that qrwlock relies on spinlock to be/provide fairness.

> Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>

References:
- [PATCH 0/5] Generic Ticket Spinlocks
  - From: Palmer Dabbelt
- [PATCH 5/5] RISC-V: Move to queued RW locks
  - From: Palmer Dabbelt

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