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From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Andi Kleen <ak-l3A5Bk7waGM@public.gmane.org>
Cc: Nick Piggin <npiggin-l3A5Bk7waGM@public.gmane.org>,
	Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>,
	Linux Kernel Mailing List
	<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [rfc][patch] x86-64 new smp_call_function design
Date: Sun, 16 Mar 2008 16:33:37 +0200	[thread overview]
Message-ID: <47DD2FC1.8040106@qumranet.com> (raw)
In-Reply-To: <47C5668C.6040906-l3A5Bk7waGM@public.gmane.org>

Andi Kleen wrote:
>
>>>> As far as I understand, calling a subset of online CPUs that is not all or
>>>> one, is used quite infrequently, so this might be OK.
>>>>         
>>> With cpusets and isolation etc. it is the normal case.
>>>       
>> Oh really? Coming from what callers?
>>     
>
> The isolation work is not merged yet, but it will essentially need
> to turn a lot of the _call_function()s into _call_function_mask()
>   

kvm is also a heavy user of smp_call_function_mask(); if you run 
multiple smp guests you'll see plenty of disjoint smp_call_function_mask()s.

-- 
error compiling committee.c: too many arguments to function

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WARNING: multiple messages have this Message-ID (diff)
From: Avi Kivity <avi@qumranet.com>
To: Andi Kleen <ak@suse.de>
Cc: Nick Piggin <npiggin@suse.de>, Ingo Molnar <mingo@elte.hu>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-arch@vger.kernel.org
Subject: Re: [rfc][patch] x86-64 new smp_call_function design
Date: Sun, 16 Mar 2008 16:33:37 +0200	[thread overview]
Message-ID: <47DD2FC1.8040106@qumranet.com> (raw)
Message-ID: <20080316143337.wtlPPDSyFQsHoNZTWF5Z0ittsYqh9EWLi5mSgEcdnog@z> (raw)
In-Reply-To: <47C5668C.6040906@suse.de>

Andi Kleen wrote:
>
>>>> As far as I understand, calling a subset of online CPUs that is not all or
>>>> one, is used quite infrequently, so this might be OK.
>>>>         
>>> With cpusets and isolation etc. it is the normal case.
>>>       
>> Oh really? Coming from what callers?
>>     
>
> The isolation work is not merged yet, but it will essentially need
> to turn a lot of the _call_function()s into _call_function_mask()
>   

kvm is also a heavy user of smp_call_function_mask(); if you run 
multiple smp guests you'll see plenty of disjoint smp_call_function_mask()s.

-- 
error compiling committee.c: too many arguments to function


  parent reply	other threads:[~2008-03-16 14:33 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-27 12:42 [rfc][patch] x86-64 new smp_call_function design Nick Piggin
2008-02-27 13:04 ` Andi Kleen
2008-02-27 13:07   ` Nick Piggin
2008-02-27 13:33     ` Andi Kleen
     [not found]       ` <47C5668C.6040906-l3A5Bk7waGM@public.gmane.org>
2008-03-16 14:33         ` Avi Kivity [this message]
2008-03-16 14:33           ` Avi Kivity
2008-02-27 13:27 ` Ingo Molnar
2008-02-27 13:50   ` Nick Piggin
2008-02-27 15:02     ` Ingo Molnar
2008-02-27 22:14       ` Nick Piggin
2008-02-28  8:45         ` Ingo Molnar
2008-02-28 12:55           ` Andi Kleen

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