linux-kernel - Re: [PATCH 00/11] rcu: Add missing RCU idle APIs on idle loop v2

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Message-ID: <20120911123528.GG21277@somewhere.redhat.com>
Date:	Tue, 11 Sep 2012 14:35:44 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Ben Hutchings <ben@...adent.org.uk>,
	LKML <linux-kernel@...r.kernel.org>,
	Chris Zankel <chris@...kel.net>,
	"3.2.x.." <stable@...r.kernel.org>,
	Chen Liqin <liqin.chen@...plusct.com>,
	Lennox Wu <lennox.wu@...il.com>,
	"James E.J. Bottomley" <jejb@...isc-linux.org>,
	Helge Deller <deller@....de>,
	Parisc <linux-parisc@...r.kernel.org>,
	David Howells <dhowells@...hat.com>,
	Koichi Yasutake <yasutake.koichi@...panasonic.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	m68k <linux-m68k@...ts.linux-m68k.org>,
	Hirokazu Takata <takata@...ux-m32r.org>,
	Yoshinori Sato <ysato@...rs.sourceforge.jp>,
	Mikael Starvik <starvik@...s.com>,
	Jesper Nilsson <jesper.nilsson@...s.com>,
	Cris <linux-cris-kernel@...s.com>,
	Richard Henderson <rth@...ddle.net>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Matt Turner <mattst88@...il.com>,
	alpha <linux-alpha@...r.kernel.org>,
	Michael Cree <mcree@...on.net.nz>
Subject: Re: [PATCH 00/11] rcu: Add missing RCU idle APIs on idle loop v2

On Mon, Sep 10, 2012 at 03:58:45PM -0700, Paul E. McKenney wrote:
> > Anyway, should I resend the patchset with this thing fixed?
> 
> Please feel free to do so.  ;-)
> 
> 							Thanx, Paul
> 

So here it is.

On the menu for the updated branch:

- fixed stable tags (use # 3.3+)
- not sure what to do with "alpha: Fix preemption handling in idle loop",
  tag as stable or not?
- added tested-by Michael Cree <mcree@...on.net.nz> for alpha patches
- propagate rename to rcu_user_*_after_irq() in the commit changelog
- remove trailing #endif in "rcu: New rcu_user_enter_after_irq() and rcu_user_exit_after_irq() APIs"
  and early rcu_user_hooks_switch() header as well (reported by WU Fenguang).
- add rcu_user_hooks_switch() header in "rcu: Switch task's syscall hooks on context switch"

I believe this all should also fix what WU Fenguang reported:

	[rcu:rcu:next 54/82] include/linux/rcupdate.h:202:20: error: redefinition of 'rcu_user_exit'
	[rcu:rcu:next 54/82] include/linux/rcupdate.h:401:19: error: redefinition of 'rcu_read_lock_bh_held'
	[rcu:rcu:idle 2/27] include/linux/rcupdate.h:969:2: error: #endif without #if

I'm not reposting the patches because few things have actually changed, except a few neats and some stuff
that have been moved from a patch to another to unbreak bisection. But the end result is about the same.
You can check the difference with a git diff between our branches.

If you want to, though, I can repost the patches.

This is pullable from:

git://github.com/fweisbec/linux-dynticks.git
	rcu/idle-for-v3.7

Thanks.
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