[Intel-wired-lan] [RFC PATCH 4/4] i40e: don't open i40iw client for kdump

Jakub Kicinski kuba at kernel.org
Tue Feb 23 20:22:07 UTC 2021

On Mon, 22 Feb 2021 15:07:01 +0800 Coiby Xu wrote:
> i40iw consumes huge amounts of memory. For example, on a x86_64 machine,
> i40iw consumed 1.5GB for Intel Corporation Ethernet Connection X722 for
> for 1GbE while "craskernel=auto" only reserved 160M. With the module
> parameter "resource_profile=2", we can reduce the memory usage of i40iw
> to ~300M which is still too much for kdump.
> Disabling the client registration would spare us the client interface
> operation open , i.e., i40iw_open for iwarp/uda device. Thus memory is
> saved for kdump.
> Signed-off-by: Coiby Xu <coxu at redhat.com>

Is i40iw or whatever the client is not itself under a CONFIG which
kdump() kernels could be reasonably expected to disable?

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