linux-kernel - Re: [RFC PATCH 09/10] POWERPC: smp: remove call to ipi_call_lock()/ipi_call

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Date:	Sat, 16 Jun 2012 13:57:38 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Yong Zhang <yong.zhang0@...il.com>, linux-kernel@...r.kernel.org,
	ralf@...ux-mips.org, sshtylyov@...sta.com, david.daney@...ium.com,
	nikunj@...ux.vnet.ibm.com, axboe@...nel.dk, mingo@...nel.org,
	tglx@...utronix.de, akpm@...ux-foundation.org,
	srivatsa.bhat@...ux.vnet.ibm.com,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	linuxppc-dev@...ts.ozlabs.org
Subject: Re: [RFC PATCH 09/10] POWERPC: smp: remove call to
 ipi_call_lock()/ipi_call_unlock()

On Sat, Jun 16, 2012 at 07:30:58PM +0200, Peter Zijlstra wrote:
> On Sat, 2012-06-16 at 09:32 -0700, Paul E. McKenney wrote:
> > However, there is an effort to get rid of stop_machine() from the
> > CPU-down path...  So something else will be needed. 
> 
> Elsewhere in this thread I mentioned we could do a synchronize_sched().
> I think that covers most of what stop-machine is doing these days.

Ah, apologies for the noise!

							Thanx, Paul

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