linux-kernel - Re: [PATCH -tip 01/32] sched: Wrap rq::lock access

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Message-ID: <1489211d-594c-d244-0111-8bd8a27fb945@gmail.com>
Date:   Fri, 20 Nov 2020 10:31:39 +1100
From:   "Singh, Balbir" <bsingharora@...il.com>
To:     "Joel Fernandes (Google)" <joel@...lfernandes.org>,
        Nishanth Aravamudan <naravamudan@...italocean.com>,
        Julien Desfossez <jdesfossez@...italocean.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Vineeth Pillai <viremana@...ux.microsoft.com>,
        Aaron Lu <aaron.lwe@...il.com>,
        Aubrey Li <aubrey.intel@...il.com>, tglx@...utronix.de,
        linux-kernel@...r.kernel.org
Cc:     mingo@...nel.org, torvalds@...ux-foundation.org,
        fweisbec@...il.com, keescook@...omium.org, kerrnel@...gle.com,
        Phil Auld <pauld@...hat.com>,
        Valentin Schneider <valentin.schneider@....com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
        Paolo Bonzini <pbonzini@...hat.com>, vineeth@...byteword.org,
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        Tim Chen <tim.c.chen@...el.com>
Subject: Re: [PATCH -tip 01/32] sched: Wrap rq::lock access

On 18/11/20 10:19 am, Joel Fernandes (Google) wrote:
> From: Peter Zijlstra <peterz@...radead.org>
> 
> In preparation of playing games with rq->lock, abstract the thing
> using an accessor.
> 

Could you clarify games? I presume the intention is to redefine the scope of the lock based on whether core sched is enabled or not? I presume patch 4/32 has the details.

Balbir Singh