From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH 04/28] nios2: Exception handling Date: Wed, 23 Apr 2014 14:23:50 +0200 Message-ID: <201404231423.51221.arnd@arndb.de> References: <1397824031-4892-1-git-send-email-lftan@altera.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from moutng.kundenserver.de ([212.227.126.131]:51761 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751773AbaDWMYH (ORCPT ); Wed, 23 Apr 2014 08:24:07 -0400 In-Reply-To: Sender: linux-arch-owner@vger.kernel.org List-ID: To: Geert Uytterhoeven Cc: Ley Foon Tan , Linux-Arch , "linux-kernel@vger.kernel.org" , "linux-doc@vger.kernel.org" , cltang@codesourcery.com On Wednesday 23 April 2014, Geert Uytterhoeven wrote: > On Wed, Apr 23, 2014 at 4:47 AM, Ley Foon Tan wrote: > > On Tue, Apr 22, 2014 at 8:33 PM, Arnd Bergmann wrote: > >> On Friday 18 April 2014, Ley Foon Tan wrote: > >>> +static const struct file_operations misalign_fops = { > >>> + .open = proc_misaligned_open, > >>> + .read = seq_read, > >>> + .llseek = seq_lseek, > >>> + .release = single_release, > >>> + .write = proc_misaligned_write, > >>> +}; > >>> +#endif /* CONFIG_PROC_FS */ > >> > >> We really shouldn't be doing new architecture specific procfs files > >> any more. I suggest you drop this one for now, and add back the > >> functionality using perf or ftrace at a later point. > > > > Okay, will remove this. > > MIPS and powerpc handle this through debugfs, cfr. > arch/mips/kernel/unaligned.c and arch/powerpc/kernel/traps.c. Ah, right, that would work too. Being able to use perf from user space sounds more flexible though. It's certainly something that can be decided later. Arnd