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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 v2] rt-numa: ignore runtime cpumask if -a CPULIST is
 specified
Message-ID: <YfD2Zt7xJSnMsB6z@linutronix.de>
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On 2022-01-25 15:46:00 [-0300], Marcelo Tosatti wrote:
>  
> When using isolcpus kernel command line option, the CPUs
> specified at isolcpus= are not part of the run time environment
> cpumask.
> 
> This causes "cyclictest -a isolatedcpus" to fail with:
> 
> WARN: Couldn't setaffinity in main thread: Invalid argument
> FATAL: No allowable cpus to run on
> # /dev/cpu_dma_latency set to 0us
> 
> To fix this, ignore the runtime cpumask if neither "+", "!"
> or "all" are specified in the cpu list string.
> 
> Suggested by Sebastian Andrzej Siewior.
> 
> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

Yes, thanks. Looks nice.

Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

Sebastian