From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Tim Sander" Subject: Re: [PATCH RT] tasklet/rt: Prevent tasklets from going into infinite spin in RT Date: Wed, 30 Nov 2011 09:46:52 +0100 Message-ID: <201111300946.53146.tim.sander@hbm.com> References: <1322618120.17003.104.camel@frodo> Mime-Version: 1.0 Content-Type: text/Plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: "LKML" , "RT" , "Thomas Gleixner" , "Ingo Molnar" , "Luis Claudio R. Goncalves" , "Clark Williams" To: "Steven Rostedt" Return-path: Received: from relay.medianet-world.de ([213.157.0.172]:36092 "HELO relay.medianet-world.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752469Ab1K3IrY convert rfc822-to-8bit (ORCPT ); Wed, 30 Nov 2011 03:47:24 -0500 Content-Class: urn:content-classes:message In-Reply-To: <1322618120.17003.104.camel@frodo> Sender: linux-rt-users-owner@vger.kernel.org List-ID: Hi Steven > I booted this patch against 3.0-rt stable, and it didn't crash ;) > Could you apply it and see if it fixes the hang that you've been seei= ng. Unfortunatly i am also experiencing these problems with ksoftirq runnin= g wild. So i am also going to test this patch and see if it fixes our problem. = It seems=20 as if this bug is much more probable after UBIFS update and when=20 "sched: RT throttling activated" hits. Best regards Tim PS: Steven i just forgot the cc list so you got this mail twice, sorry. Please ignore or at your wish use as "Deutschkurs" in german legalese: Hottinger Baldwin Messtechnik GmbH, Im Tiefen See 45, 64293 Darmstadt, = Germany | www.hbm.com=20 Registered as GmbH (German limited liability corporation) in the commer= cial register at the local court of Darmstadt, HRB 1147 =20 Company domiciled in Darmstadt | CEO: Andreas Huellhorst | Chairman of = the board: James Charles Webster Als Gesellschaft mit beschraenkter Haftung eingetragen im Handelsregist= er des Amtsgerichts Darmstadt unter HRB 1147=20 Sitz der Gesellschaft: Darmstadt | Geschaeftsfuehrung: Andreas Huellhor= st | Aufsichtsratsvorsitzender: James Charles Webster The information in this email is confidential. It is intended solely fo= r the addressee. If you are not the intended recipient, please let me k= now and delete this email. Die in dieser E-Mail enthaltene Information ist vertraulich und ledigli= ch f=C3=BCr den Empfaenger bestimmt. Sollten Sie nicht der eigentliche = Empfaenger sein, informieren Sie mich bitte kurz und loeschen diese E-M= ail. -- To unsubscribe from this list: send the line "unsubscribe linux-rt-user= s" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756704Ab1K3Ir2 (ORCPT ); Wed, 30 Nov 2011 03:47:28 -0500 Received: from relay.medianet-world.de ([213.157.0.172]:40176 "HELO relay.medianet-world.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752383Ab1K3IrY convert rfc822-to-8bit (ORCPT ); Wed, 30 Nov 2011 03:47:24 -0500 thread-index: AcyvPKzn95t2spTERLCrDLCQ2Ko2JQ== Thread-Topic: [PATCH RT] tasklet/rt: Prevent tasklets from going into infinite spin in RT Content-Class: urn:content-classes:message Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4913 From: "Tim Sander" Organization: Hottinger Baldwin Messtechnik To: "Steven Rostedt" Subject: Re: [PATCH RT] tasklet/rt: Prevent tasklets from going into infinite spin in RT Date: Wed, 30 Nov 2011 09:46:52 +0100 User-Agent: KMail/1.13.5 (Linux/3.0.3; KDE/4.4.5; x86_64; ; ) Cc: "LKML" , "RT" , "Thomas Gleixner" , "Ingo Molnar" , "Luis Claudio R. Goncalves" , "Clark Williams" References: <1322618120.17003.104.camel@frodo> In-Reply-To: <1322618120.17003.104.camel@frodo> MIME-Version: 1.0 Content-Type: text/Plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Message-ID: <201111300946.53146.tim.sander@hbm.com> X-OriginalArrivalTime: 30 Nov 2011 08:47:21.0880 (UTC) FILETIME=[ACCB3980:01CCAF3C] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Steven > I booted this patch against 3.0-rt stable, and it didn't crash ;) > Could you apply it and see if it fixes the hang that you've been seeing. Unfortunatly i am also experiencing these problems with ksoftirq running wild. So i am also going to test this patch and see if it fixes our problem. It seems as if this bug is much more probable after UBIFS update and when "sched: RT throttling activated" hits. Best regards Tim PS: Steven i just forgot the cc list so you got this mail twice, sorry. Please ignore or at your wish use as "Deutschkurs" in german legalese: Hottinger Baldwin Messtechnik GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany | www.hbm.com Registered as GmbH (German limited liability corporation) in the commercial register at the local court of Darmstadt, HRB 1147 Company domiciled in Darmstadt | CEO: Andreas Huellhorst | Chairman of the board: James Charles Webster Als Gesellschaft mit beschraenkter Haftung eingetragen im Handelsregister des Amtsgerichts Darmstadt unter HRB 1147 Sitz der Gesellschaft: Darmstadt | Geschaeftsfuehrung: Andreas Huellhorst | Aufsichtsratsvorsitzender: James Charles Webster The information in this email is confidential. It is intended solely for the addressee. If you are not the intended recipient, please let me know and delete this email. Die in dieser E-Mail enthaltene Information ist vertraulich und lediglich für den Empfaenger bestimmt. Sollten Sie nicht der eigentliche Empfaenger sein, informieren Sie mich bitte kurz und loeschen diese E-Mail.