linux-kernel - Re: [PATCH v2 1/4] Revert "igb: Disable threaded IRQ for igb_msix

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Message-ID: <9f3fe7f3-9309-441c-a2c8-4ee8ad51550d@intel.com>
Date: Fri, 8 Nov 2024 15:00:48 -0800
From: Jacob Keller <jacob.e.keller@...el.com>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>, Przemek Kitszel
	<przemyslaw.kitszel@...el.com>
CC: Wander Lairson Costa <wander@...hat.com>, Tony Nguyen
	<anthony.l.nguyen@...el.com>, <tglx@...utronix.de>, Andrew Lunn
	<andrew+netdev@...n.ch>, "David S. Miller" <davem@...emloft.net>, "Eric
 Dumazet" <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, Clark Williams <clrkwllms@...nel.org>, Steven Rostedt
	<rostedt@...dmis.org>, Simon Horman <horms@...nel.org>, "moderated list:INTEL
 ETHERNET DRIVERS" <intel-wired-lan@...ts.osuosl.org>, "open list:NETWORKING
 DRIVERS" <netdev@...r.kernel.org>, open list <linux-kernel@...r.kernel.org>,
	"open list:Real-time Linux (PREEMPT_RT):Keyword:PREEMPT_RT"
	<linux-rt-devel@...ts.linux.dev>
Subject: Re: [PATCH v2 1/4] Revert "igb: Disable threaded IRQ for
 igb_msix_other"



On 11/8/2024 4:28 AM, Sebastian Andrzej Siewior wrote:
> On 2024-11-08 13:20:28 [+0100], Przemek Kitszel wrote:
>> I don't like to slow things down, but it would be great to have a Link:
>> to the report, and the (minified) splat attached.
> 
> I don't have a splat, I just reviewed the original patch. Please do
> delay this.
> 
> Sebastian

It will definitely splat on RT kernels at some point, if there is a
spinlock.