Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933012AbXA3F4K (ORCPT ); Tue, 30 Jan 2007 00:56:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932954AbXA3F4K (ORCPT ); Tue, 30 Jan 2007 00:56:10 -0500 Received: from e4.ny.us.ibm.com ([32.97.182.144]:52815 "EHLO e4.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933012AbXA3F4J (ORCPT ); Tue, 30 Jan 2007 00:56:09 -0500 Date: Tue, 30 Jan 2007 11:25:56 +0530 From: Ananth N Mavinakayanahalli To: Kumar Gala Cc: linux-kernel@vger.kernel.org, Andrew Morton , prasanna@in.ibm.com, anil.s.keshavamurthy@intel.com, davem@davemloft.net, Paul Mackerras , masami.hiramatsu.pt@hitachi.com Subject: Re: [PATCH] kprobes: Fix compiler warning Message-ID: <20070130055556.GA20699@in.ibm.com> Reply-To: ananth@in.ibm.com References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1666 Lines: 54 On Mon, Jan 29, 2007 at 11:43:33PM -0600, Kumar Gala wrote: > On ppc the compiler gripes about: > > kernel/kprobes.c: In function 'collect_garbage_slots': > kernel/kprobes.c:215: warning: comparison is always false due to limited > range of data type > > The compiler ends up optimizing away the test since char's are unsigned on > ppc. Kumar, Masami fixed this last week: http://marc.theaimsgroup.com/?l=linux-kernel&m=116968723823366&w=2 Patch currently in -mm. Thanks, Ananth > > Signed-off-by: Kumar Gala > > --- > commit 1ee2dc5300b1c454f92eeea82da300f72db1b26f > tree c73cdacb43e154292708d967e11b1cbf7ab4904f > parent c0d4d573feed199b16094c072e7cb07afb01c598 > author Kumar Gala Mon, 29 Jan 2007 23:38:11 > -0600 > committer Kumar Gala Mon, 29 Jan 2007 23:38:11 > -0600 > > kernel/kprobes.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/kernel/kprobes.c b/kernel/kprobes.c > index 17ec4af..514276f 100644 > --- a/kernel/kprobes.c > +++ b/kernel/kprobes.c > @@ -212,7 +212,7 @@ static int __kprobes collect_garbage_slots(void) > continue; > kip->ngarbage = 0; /* we will collect all garbages */ > for (i = 0; i < INSNS_PER_PAGE; i++) { > - if (kip->slot_used[i] == -1 && > + if (kip->slot_used[i] == (char)-1 && > collect_one_slot(kip, i)) > break; > } - 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/