Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755099AbYK0Nh7 (ORCPT ); Thu, 27 Nov 2008 08:37:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753093AbYK0Nhu (ORCPT ); Thu, 27 Nov 2008 08:37:50 -0500 Received: from fk-out-0910.google.com ([209.85.128.184]:60789 "EHLO fk-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752177AbYK0Nht (ORCPT ); Thu, 27 Nov 2008 08:37:49 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=message-id:date:from:reply-to:to:subject:cc:in-reply-to :mime-version:content-type:content-transfer-encoding :content-disposition:references; b=C6lCpNYg3CVDyVBJLEIAV+FoPeFf3XIHHOCP72+1ACiBkcaK5vAY6bC0x3V991bmER z2gMgllP4KUMFcuoRoqXUAkfP9m8dkYVh5r6NWdq4XyLeFn2ybOi2zEAbGJeeqClr5Pi 0gNmzg+D39/MT9Kbn99sV1otqMhLLR8iLDhhY= Message-ID: <7c86c4470811270537y57577314we44d3d81b5f7d4a7@mail.gmail.com> Date: Thu, 27 Nov 2008 14:37:47 +0100 From: "stephane eranian" Reply-To: eranian@gmail.com To: "Thomas Gleixner" Subject: Re: [patch 05/24] perfmon: X86 generic code (x86) Cc: "Andi Kleen" , "David Miller" , linux-kernel@vger.kernel.org, akpm@linux-foundation.org, mingo@elte.hu, x86@kernel.org, sfr@canb.auug.org.au In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <7c86c4470811270209q18d4e83aq8901837159838cc4@mail.gmail.com> <20081127113115.GH6703@one.firstfloor.org> <7c86c4470811270335p2dbd61ebpe2c584e32d8b2292@mail.gmail.com> <20081127.034247.72331360.davem@davemloft.net> <20081127123811.GJ6703@one.firstfloor.org> <7c86c4470811270431n5cf1b863tc4f8c7829283e332@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 748 Lines: 17 On Thu, Nov 27, 2008 at 2:32 PM, Thomas Gleixner wrote: > On Thu, 27 Nov 2008, stephane eranian wrote: >> That's true for Intel. >> On AMD64, I think you can get at most one sample out of a irq-off >> region using IBS. > > Exactly the same amount which you get with the NMI/self_IPI out of an > irq-off region. > Why would you get only one sample per irq-off region if you use NMI? I would think you could get multiple, depending on your sampling period and the size of the region. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/