linux-kernel - Re: [PATCH v4 3/7] x86/flush_tlb: try flush_tlb_single one by one in flush_tlb

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Message-ID: <4FB260F1.5040800@intel.com>
Date:	Tue, 15 May 2012 21:58:09 +0800
From:	Alex Shi <alex.shi@...el.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	Borislav Petkov <bp@...64.org>, rob@...dley.net,
	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com, arnd@...db.de,
	rostedt@...dmis.org, fweisbec@...il.com, jeremy@...p.org,
	gregkh@...uxfoundation.org, riel@...hat.com, luto@....edu,
	avi@...hat.com, len.brown@...el.com, dhowells@...hat.com,
	fenghua.yu@...el.com, ak@...ux.intel.com, cpw@....com,
	steiner@....com, akpm@...ux-foundation.org, penberg@...nel.org,
	hughd@...gle.com, rientjes@...gle.com,
	kosaki.motohiro@...fujitsu.com, n-horiguchi@...jp.nec.com,
	paul.gortmaker@...driver.com, trenn@...e.de, tj@...nel.org,
	oleg@...hat.com, axboe@...nel.dk, kamezawa.hiroyu@...fujitsu.com,
	viro@...iv.linux.org.uk, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 3/7] x86/flush_tlb: try flush_tlb_single one by one
 in flush_tlb_range

On 05/15/2012 08:00 PM, Peter Zijlstra wrote:

> On Tue, 2012-05-15 at 13:56 +0200, Borislav Petkov wrote:
>> On Tue, May 15, 2012 at 01:16:22PM +0200, Peter Zijlstra wrote:
>>> Wouldn't all this become much prettier if you rip out that
>>> multi-vector stuff?
>>
>> multi-vector stuff? Please elaborate.
> 
> The INVALIDATE_TLB_VECTOR muck:
> 
>                 apic->send_IPI_mask(to_cpumask(f->flush_cpumask),
>                               INVALIDATE_TLB_VECTOR_START + sender);
> 
> and simply use:
> 
>  smp_call_function()
> 


I am trying this following the patchset.
but that should another work thread.
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