linux-kernel - Re: Bisected post-3.9 regression: Resume takes 5 times as much time as with v3.9

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Message-ID: <20130512213430.GE24440@8bytes.org>
Date:	Sun, 12 May 2013 23:34:30 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Bjørn Mork <bjorn@...k.no>,
	"Paul E. McKenney" <paul.mckenney@...aro.org>,
	linux-kernel@...r.kernel.org
Subject: Re: Bisected post-3.9 regression: Resume takes 5 times as much time
 as with v3.9

On Sun, May 12, 2013 at 01:57:48PM -0700, Paul E. McKenney wrote:
> That does look pretty extreme!  If you build with CONFIG_RCU_NO_HZ=n,
> but without the revert, do you still get the delays?

With CONFIG_RCU_NO_HZ=n (and no revert) the system boots fine, no boot
delay. I also enabled some RCU debugging options (with
CONFIG_RCU_NO_HZ=y), but didn't see anything so far.


	Joerg


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