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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: linux-rt-users@vger.kernel.org, John Kacur <jkacur@redhat.com>
Subject: Re: [PATCH] rt-numa: optionally ignore runtime cpumask
Date: Mon, 24 Jan 2022 17:26:26 +0100	[thread overview]
Message-ID: <Ye7TMlx3mJkTxCsI@linutronix.de> (raw)
In-Reply-To: <Ye6id4lSKMcqAZ65@fuller.cnet>

On 2022-01-24 09:58:31 [-0300], Marcelo Tosatti wrote:
> You mean "using all CPUs which are part of the current affinity mask by
> default" ? (where current affinity mask would mean user specified CPU
> mask).
> 
> > And then either specify the
> > requested CPU mask or use explicitly all CPUs.
> 
> Do you mean to drop 
> 
>         /*
>          * Clear bits that are not set in both the cpuset from the
>          * environment, and in the user specified affinity.
> 
> And just attempt to use the user specified mask? (which will then return
> failure to the user in which case he can correct it).
> 
After reading it again, I don't get it.
  cyclictest -a

Uses all CPUs in the system. 

  cyclictest -a $CPU

Uses the $CPU (mask) specified. If $CPU is not part of the current CPU
mask, why shouldn't it work?

Sebastian

  reply	other threads:[~2022-01-24 16:26 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-21 14:16 [PATCH] rt-numa: optionally ignore runtime cpumask Marcelo Tosatti
2022-01-21 18:16 ` Sebastian Andrzej Siewior
2022-01-24 12:58   ` Marcelo Tosatti
2022-01-24 16:26     ` Sebastian Andrzej Siewior [this message]
2022-01-24 16:40       ` Marcelo Tosatti
2022-01-24 16:44         ` Marcelo Tosatti
2022-01-24 17:07         ` Sebastian Andrzej Siewior
2022-01-24 17:50           ` Marcelo Tosatti
2022-01-25 18:40 ` [PATCH] rt-numa: ignore runtime cpumask if -a CPULIST is specified Marcelo Tosatti
2022-01-25 18:46   ` [PATCH v2] " Marcelo Tosatti
2022-01-26  7:21     ` Sebastian Andrzej Siewior
2022-01-28 17:44     ` John Kacur
2022-01-28 18:17       ` Sebastian Andrzej Siewior
2022-01-28 21:08         ` John Kacur
2022-01-28 18:39       ` [PATCH v3] " Marcelo Tosatti
2022-01-28 21:11         ` John Kacur

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