linux-kernel - Re: [External] : Re: [PATCH v14 4/6] locking/qspinlock: Introduce starvation avoidance into CNA

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Message-ID: <6c968acd-dda2-ed1f-6582-b7811030761e@redhat.com>
Date:   Wed, 14 Apr 2021 13:31:17 -0400
From:   Waiman Long <llong@...hat.com>
To:     Andi Kleen <ak@...ux.intel.com>, Waiman Long <llong@...hat.com>
Cc:     Alex Kogan <alex.kogan@...cle.com>, linux@...linux.org.uk,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, will.deacon@....com,
        arnd@...db.de, linux-arch@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, bp@...en8.de, hpa@...or.com, x86@...nel.org,
        guohanjun@...wei.com, jglauber@...vell.com,
        steven.sistare@...cle.com, daniel.m.jordan@...cle.com,
        dave.dice@...cle.com
Subject: Re: [External] : Re: [PATCH v14 4/6] locking/qspinlock: Introduce
 starvation avoidance into CNA

On 4/14/21 1:26 PM, Andi Kleen wrote:
>> The CNA code, if enabled, will be in vmlinux, not in a kernel module. As a
>> result, I think a module parameter will be no different from a kernel
>> command line parameter in this regard.
> You can still change it in /sys at runtime, even if it's in the vmlinux.

I see, thank for the clarification.

Cheers,
Longman