Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755802Ab0FNJWI (ORCPT ); Mon, 14 Jun 2010 05:22:08 -0400 Received: from mail-bw0-f46.google.com ([209.85.214.46]:56323 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755783Ab0FNJWD (ORCPT ); Mon, 14 Jun 2010 05:22:03 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:x-enigmail-version:content-type :content-transfer-encoding; b=ghCPCiJpCg7mD5NlgrEkvA4Ej52CX5EqEThP539DfPiUfYgk77MEqWlEmOOnC6DcGB /8b1GtZ/82olFSFqIQD4Bf1u7Wf++rmhB2uC3DBGsnFjKPahBuMY33JSmuCob8Y1Ufcf vlFFWL/f5EwdnEVzxxXmBzxfwaMk8/s7rNX4g= Message-ID: <4C15F4B7.5040601@gmail.com> Date: Mon, 14 Jun 2010 11:21:59 +0200 From: Jiri Slaby User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; cs-CZ; rv:1.9.2.4) Gecko/20100608 SUSE/3.1rc2-2.2 Thunderbird/3.1 MIME-Version: 1.0 To: Tejun Heo CC: mingo@elte.hu, tglx@linutronix.de, bphilips@suse.de, yinghai@kernel.org, akpm@linux-foundation.org, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, jeff@garzik.org, linux-ide@vger.kernel.org, stern@rowland.harvard.edu, gregkh@suse.de, khali@linux-fr.org Subject: Re: [PATCH 09/12] irq: implement IRQ expecting References: <1276443098-20653-1-git-send-email-tj@kernel.org> <1276443098-20653-10-git-send-email-tj@kernel.org> In-Reply-To: <1276443098-20653-10-git-send-email-tj@kernel.org> X-Enigmail-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 910 Lines: 26 On 06/13/2010 05:31 PM, Tejun Heo wrote: > --- a/kernel/irq/spurious.c > +++ b/kernel/irq/spurious.c ... > @@ -25,9 +26,43 @@ enum { > /* IRQ polling common parameters */ > IRQ_POLL_SLOW_INTV = 3 * HZ, /* not too slow for ppl, slow enough for machine */ > IRQ_POLL_INTV = HZ / 100, /* from the good ol' 100HZ tick */ > + IRQ_POLL_QUICK_INTV = HZ / 1000, /* pretty quick but not too taxing */ > > IRQ_POLL_SLOW_SLACK = HZ, > IRQ_POLL_SLACK = HZ / 1000, /* 10% slack */ > + IRQ_POLL_QUICK_SLACK = HZ / 10000, /* 10% slack */ Hi. These are zeros on most systems (assuming distros set HZ=100 and 250), what is their purpose then? regards, -- js -- 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/