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Date: Fri, 24 Jul 2026 14:30:01 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Bobby Eshleman <bobbyeshleman@gmail.com>
Cc: Donald Hunter <donald.hunter@gmail.com>, "David S. Miller"
 <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, Paolo Abeni
 <pabeni@redhat.com>, Simon Horman <horms@kernel.org>, Andrew Lunn
 <andrew+netdev@lunn.ch>, Gerd Hoffmann <kraxel@redhat.com>, Vivek Kasireddy
 <vivek.kasireddy@intel.com>, Sumit Semwal <sumit.semwal@linaro.org>,
 Christian =?UTF-8?B?S8O2bmln?= <christian.koenig@amd.com>, Shuah Khan
 <shuah@kernel.org>, netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
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 linaro-mm-sig@lists.linaro.org, linux-kselftest@vger.kernel.org,
 sdf@fomichev.me, razor@blackwall.org, daniel@iogearbox.net,
 almasrymina@google.com, matttbe@kernel.org, skhawaja@google.com,
 dw@davidwei.uk, Joe Damato <joe@dama.to>, Bobby Eshleman
 <bobbyeshleman@meta.com>
Subject: Re: [PATCH net-next v5 3/3] selftests/net: devmem.py: add
 check_rx_large_niov
Message-ID: <20260724143001.5afa8631@kernel.org>
In-Reply-To: <amPTWGX/3LHepYR3@devvm29614.prn0.facebook.com>
References: <20260708-tcpdm-large-niovs-v5-0-34bf6fac941b@meta.com>
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On Fri, 24 Jul 2026 14:04:24 -0700 Bobby Eshleman wrote:
> On Tue, Jul 21, 2026 at 11:09:03AM -0700, Jakub Kicinski wrote:
> > On Wed, 08 Jul 2026 15:55:06 -0700 Bobby Eshleman wrote:  
> > > +@ksft_disruptive
> > > +def check_rx_large_niov(cfg) -> None:
> > > +    """Run the devmem RX test with rx-buf-size = 16 KiB."""
> > > +    run_rx_large_niov(cfg)  
> > 
> > Any idea why the devmem tests sprinkle disruptive everywhere?
> > Disruptive means we take the link down, I don't think this test 
> > does that.  
> 
> Talked to Stan and he mentioned the original idea was not necessarily
> just for link down, but any test that could be considered disruptive to
> other tests, with the idea to eventually introduce some scheduling
> (postpone disruptive until the end).

Perhaps have such conversations on the list? IDK what Stan has in mind.

> If we can get common agreement on its meaning, maybe I could submit
> something into the documentation and update where its misused?
> 
> I'll drop it from this patch since it doesn't bring down the link (and
> seemingly no worries about check_rx_hds() tests not having it).