From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id A66EEDDE11 for ; Tue, 23 Oct 2007 06:14:49 +1000 (EST) Subject: Re: [RFC/PATCH 2/2] powerpc: irqtrace support to 64-bit powerpc From: Benjamin Herrenschmidt To: Johannes Berg In-Reply-To: <1193060107.9793.8.camel@johannes.berg> References: <20071015072826.2D541DDE16@ozlabs.org> <1193060107.9793.8.camel@johannes.berg> Content-Type: text/plain Date: Tue, 23 Oct 2007 06:14:42 +1000 Message-Id: <1193084082.6745.91.camel@pasglop> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org Reply-To: benh@kernel.crashing.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Mon, 2007-10-22 at 15:35 +0200, Johannes Berg wrote: > On Mon, 2007-10-15 at 17:28 +1000, Benjamin Herrenschmidt wrote: > > This adds the low level irq tracing hooks to the powerpc architecture > > needed to enable full lockdep functionality > > > > Some rework from Johannes initial version, removing the asm trampoline that > > isn't needed (thus improving perfs) and fixing a couple of bugs such as > > incorrect initial preempt_count on the softirq alternate stack. > > Hmm. It breaks booting on my quad, I finally got around to testing > without this patch and it turns out that it caused the boot failure I > reported in another mail. This is with v2.6.23-6623-g55b70a0, a clean > tree boots fine but with these two patches applied and configured in it > fails during boot, hanging at some point, apparently when userspace is > entered. > > On the other hand, it is fine with my original version. I'll have to > find some time to check the differences hunk by hunk I guess. Or I can try on my quad :-) I'll have a look. It did boot on some other machines though. Funny. Ben.