Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263921AbTEXTaz (ORCPT ); Sat, 24 May 2003 15:30:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264119AbTEXTaz (ORCPT ); Sat, 24 May 2003 15:30:55 -0400 Received: from imap.gmx.net ([213.165.65.60]:62101 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S263921AbTEXTax (ORCPT ); Sat, 24 May 2003 15:30:53 -0400 Message-ID: <3ECFCB7B.4080107@gmx.net> Date: Sat, 24 May 2003 21:43:55 +0200 From: Carl-Daniel Hailfinger User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2) Gecko/20021126 X-Accept-Language: de, en MIME-Version: 1.0 To: Zwane Mwaikambo CC: Linux Kernel Mailing List , linux-smp@vger.kernel.org, Ingo Molnar , Marc-Christian Petersen Subject: Re: [RFC] Fix NMI watchdog documentation References: <3ECFC2D6.2020007@gmx.net> In-Reply-To: X-Enigmail-Version: 0.71.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1328 Lines: 41 Zwane Mwaikambo wrote: > On Sat, 24 May 2003, Zwane Mwaikambo wrote: > > >>For nmi_watchdog=1 the NMI watchdog uses the programmable interval timer >>to trigger interrupt events via the IOAPIC. with nmi_watchdog=2 we use the >>performance counters on the processor to trigger these events. IOAPICs >>are generally found on SMP motherboards (but there are UP boards with >>them, it's chipset dependent). Generally i686+ (save some Athlons and a >>few other processors) will work with nmi_watchdog=2. > > > Forgot this bit; > > w/ CONFIG_X86_LOCAL_APIC=y you only have nmi_watchdog=2 > > w/ CONFIG_X86_IO_APIC=y you have nmi_watchdog=1 and 2 > > w/ CONFIG_SMP you have nmi_watchdog=1 and 2 as it depends on > CONFIG_X86_IO_APIC Marc-Christian Petersen wrote: > the nmi_watchdog is always compiled in if you select "CONFIG_X86_LOCAL_APIC" > > see "arch/i386/kernel/Makefile" Thanks to all who responded. I will prepare a patch for Documentation/nmi_watchdog.txt to clarify it and send the patch to Linus and Marcelo. Regards, Carl-Daniel -- http://www.hailfinger.org/ - 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/