RE: [PATCH next v2 5/5] locking/osq_lock: Optimise decode_cpu() and per_cpu_ptr().

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To: "'Waiman Long'" <longman@xxxxxxxxxx>, "'linux-kernel@xxxxxxxxxxxxxxx'" <linux-kernel@xxxxxxxxxxxxxxx>, "'peterz@xxxxxxxxxxxxx'" <peterz@xxxxxxxxxxxxx>
Subject: RE: [PATCH next v2 5/5] locking/osq_lock: Optimise decode_cpu() and per_cpu_ptr().
From: David Laight <David.Laight@xxxxxxxxxx>
Date: Mon, 1 Jan 2024 08:47:00 +0000
Accept-language: en-GB, en-US
Cc: "'mingo@xxxxxxxxxx'" <mingo@xxxxxxxxxx>, "'will@xxxxxxxxxx'" <will@xxxxxxxxxx>, "'boqun.feng@xxxxxxxxx'" <boqun.feng@xxxxxxxxx>, "'Linus Torvalds'" <torvalds@xxxxxxxxxxxxxxxxxxxx>, "'virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx'" <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx>, "'Zeng Heng'" <zengheng4@xxxxxxxxxx>
In-reply-to: <9d4024ba-6422-4775-b934-bfa80a72a858@redhat.com>
References: <2b4e8a5816a742d2bd23fdbaa8498e80@AcuMS.aculab.com> <7c1148fe64fb46a7a81c984776cd91df@AcuMS.aculab.com> <9d4024ba-6422-4775-b934-bfa80a72a858@redhat.com>

From: Waiman Long
> Sent: 01 January 2024 04:14
...
> You really like micro-optimization.

They all add up :-)

	David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)

References:
- [PATCH next v2 0/5] locking/osq_lock: Optimisations to osq_lock code.
  - From: David Laight
- [PATCH next v2 5/5] locking/osq_lock: Optimise decode_cpu() and per_cpu_ptr().
  - From: David Laight
- Re: [PATCH next v2 5/5] locking/osq_lock: Optimise decode_cpu() and per_cpu_ptr().
  - From: Waiman Long

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