Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757893Ab3E3Oyv (ORCPT ); Thu, 30 May 2013 10:54:51 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:29741 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757463Ab3E3Oyn (ORCPT ); Thu, 30 May 2013 10:54:43 -0400 X-Authority-Analysis: v=2.0 cv=MNbiabll c=1 sm=0 a=rXTBtCOcEpjy1lPqhTCpEQ==:17 a=mNMOxpOpBa8A:10 a=f73XcKl29joA:10 a=5SG0PmZfjMsA:10 a=IkcTkHD0fZMA:10 a=meVymXHHAAAA:8 a=y5CGMQcehd0A:10 a=k5LshzCzX24ODCz3Bi4A:9 a=QEXdDO2ut3YA:10 a=rXTBtCOcEpjy1lPqhTCpEQ==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 74.67.115.198 Message-ID: <1369925681.26799.6.camel@gandalf.local.home> Subject: Re: [PATCH] RFC: Set irq thread to RT priority on creation From: Steven Rostedt To: Thomas Gleixner Cc: Ivo Sieben , RT , Sebastian Andrzej Siewior , LKML Date: Thu, 30 May 2013 10:54:41 -0400 In-Reply-To: References: <1369915975-28797-1-git-send-email-meltedpianoman@gmail.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.4.4-3 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 744 Lines: 19 On Thu, 2013-05-30 at 16:07 +0200, Thomas Gleixner wrote: > > This patch solves an issue for me where a device driver is expected to handle an > > interrupt immediatly after irq handlers are installed and interrupts enabled. > > You miss to explain what kind of issue that is. I could envision the case where the interrupt is initialized but doesn't go off until much later. If it never ran, then it would still be in SCHED_OTHER(), and that first interrupt could have a large delay. -- Steve -- 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/