netdev - Re: [net] Revert "igb: reduce CPU0 latency when updating statistics"

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Message-Id: <20190115.134544.1423057568842741288.davem@davemloft.net>
Date:   Tue, 15 Jan 2019 13:45:44 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     jeffrey.t.kirsher@...el.com
Cc:     netdev@...r.kernel.org, davej@...emonkey.org.uk,
        xiyou.wangcong@...il.com, jan.jablonsky@...lesgroup.com
Subject: Re: [net] Revert "igb: reduce CPU0 latency when updating
 statistics"

From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date: Wed,  9 Jan 2019 09:10:53 -0800

> This reverts commit 59361316afcb08569af21e1af83e89c7051c055a.
> 
> Due to problems found in additional testing, this causes an illegal
> context switch in the RCU read-side critical section.
> 
> CC: Dave Jones <davej@...emonkey.org.uk>
> CC: Cong Wang <xiyou.wangcong@...il.com>
> CC: Jan Jablonsky <jan.jablonsky@...lesgroup.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>

Applied.