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From: Frederic Weisbecker <frederic@kernel.org>
To: Nitesh Narayan Lal <nitesh@redhat.com>
Cc: bhelgaas@google.com,
	Jesse Brandeburg <jesse.brandeburg@intel.com>,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	linux-pci@vger.kernel.org, mtosatti@redhat.com,
	sassmann@redhat.com, jeffrey.t.kirsher@intel.com,
	jacob.e.keller@intel.com, jlelli@redhat.com, hch@infradead.org,
	mike.marciniszyn@intel.com, dennis.dalessandro@intel.com,
	thomas.lendacky@amd.com, jerinj@marvell.com,
	mathias.nyman@intel.com, jiri@nvidia.com
Subject: Re: [RFC][Patch v1 2/3] i40e: limit msix vectors based on housekeeping CPUs
Date: Tue, 22 Sep 2020 22:44:01 +0200	[thread overview]
Message-ID: <20200922204400.GC5217@lenoir> (raw)
In-Reply-To: <1b7fba6f-85c3-50d6-a951-78db1ccfd04a@redhat.com>

On Tue, Sep 22, 2020 at 09:34:02AM -0400, Nitesh Narayan Lal wrote:
> On 9/22/20 5:54 AM, Frederic Weisbecker wrote:
> > But I don't also want to push toward a complicated solution to handle CPU hotplug
> > if there is no actual problem to solve there.
> 
> Sure, even I am not particularly sure about the hotplug scenarios.

Surely when isolation is something that will be configurable through
cpuset, it will become interesting. For now it's probably not worth
adding hundreds lines of code if nobody steps into such issue yet.

What is probably more worthy for now is some piece of code to consolidate
the allocation of those MSI vectors on top of the number of housekeeping
CPUs.

Thanks.

  reply	other threads:[~2020-09-22 20:44 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-09 15:08 [RFC] [PATCH v1 0/3] isolation: limit msix vectors based on housekeeping CPUs Nitesh Narayan Lal
2020-09-09 15:08 ` [RFC][Patch v1 1/3] sched/isolation: API to get num of hosekeeping CPUs Nitesh Narayan Lal
2020-09-17 18:18   ` Jesse Brandeburg
2020-09-17 18:43     ` Nitesh Narayan Lal
2020-09-17 20:11   ` Bjorn Helgaas
2020-09-17 21:48     ` Jacob Keller
2020-09-17 22:09     ` Nitesh Narayan Lal
2020-09-21 23:40   ` Frederic Weisbecker
2020-09-22  3:16     ` Nitesh Narayan Lal
2020-09-22 10:08       ` Frederic Weisbecker
2020-09-22 13:50         ` Nitesh Narayan Lal
2020-09-22 20:58           ` Frederic Weisbecker
2020-09-22 21:15             ` Nitesh Narayan Lal
2020-09-22 21:26             ` Andrew Lunn
2020-09-22 22:20               ` Nitesh Narayan Lal
2020-09-09 15:08 ` [RFC][Patch v1 2/3] i40e: limit msix vectors based on housekeeping CPUs Nitesh Narayan Lal
2020-09-11 15:23   ` Marcelo Tosatti
2020-09-17 18:23   ` Jesse Brandeburg
2020-09-17 18:31     ` Nitesh Narayan Lal
2020-09-21 22:58     ` Frederic Weisbecker
2020-09-22  3:08       ` Nitesh Narayan Lal
2020-09-22  9:54         ` Frederic Weisbecker
2020-09-22 13:34           ` Nitesh Narayan Lal
2020-09-22 20:44             ` Frederic Weisbecker [this message]
2020-09-22 21:05               ` Nitesh Narayan Lal
2020-09-09 15:08 ` [RFC][Patch v1 3/3] PCI: Limit pci_alloc_irq_vectors as per " Nitesh Narayan Lal
2020-09-10 19:22   ` Marcelo Tosatti
2020-09-10 19:31     ` Nitesh Narayan Lal
2020-09-22 13:54       ` Nitesh Narayan Lal
2020-09-22 21:08         ` Frederic Weisbecker

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