From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz@infradead.org>
Date: Tue, 20 Oct 2020 09:30:55 +0200
Subject: [Intel-wired-lan] [PATCH v4 4/4] PCI: Limit
 pci_alloc_irq_vectors() to housekeeping CPUs
In-Reply-To: <20201019140005.GB17287@fuller.cnet>
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 <20200928183529.471328-5-nitesh@redhat.com>
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 <79f382a7-883d-ff42-394d-ec4ce81fed6a@redhat.com>
 <20201019111137.GL2628@hirez.programming.kicks-ass.net>
 <20201019140005.GB17287@fuller.cnet>
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On Mon, Oct 19, 2020 at 11:00:05AM -0300, Marcelo Tosatti wrote:
> > So I think it is important to figure out what that driver really wants
> > in the nohz_full case. If it wants to retain N interrupts per CPU, and
> > only reduce the number of CPUs, the proposed interface is wrong.
> 
> It wants N interrupts per non-isolated (AKA housekeeping) CPU.

Then the patch is wrong and the interface needs changing from @min_vecs,
@max_vecs to something that expresses the N*nr_cpus relation.