From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B7A60C10F11 for ; Wed, 10 Apr 2019 11:09:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8C5812084B for ; Wed, 10 Apr 2019 11:09:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731304AbfDJLJ4 (ORCPT ); Wed, 10 Apr 2019 07:09:56 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:58753 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730861AbfDJLFk (ORCPT ); Wed, 10 Apr 2019 07:05:40 -0400 Received: from localhost ([127.0.0.1] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1hEB2x-00053H-2E; Wed, 10 Apr 2019 13:05:39 +0200 Message-Id: <20190410103644.485737321@linutronix.de> User-Agent: quilt/0.65 Date: Wed, 10 Apr 2019 12:28:04 +0200 From: Thomas Gleixner To: LKML Cc: Josh Poimboeuf , x86@kernel.org, Andy Lutomirski , Steven Rostedt , Alexander Potapenko , Peter Zijlstra , Will Deacon Subject: [RFC patch 10/41] lockdep: Remove the ULONG_MAX stack trace hackery References: <20190410102754.387743324@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org No architecture terminates the stack trace with ULONG_MAX anymore. Remove the cruft. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: Will Deacon --- kernel/locking/lockdep.c | 11 ----------- 1 file changed, 11 deletions(-) --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -444,17 +444,6 @@ static int save_trace(struct stack_trace save_stack_trace(trace); - /* - * Some daft arches put -1 at the end to indicate its a full trace. - * - * this is buggy anyway, since it takes a whole extra entry so a - * complete trace that maxes out the entries provided will be reported - * as incomplete, friggin useless - */ - if (trace->nr_entries != 0 && - trace->entries[trace->nr_entries-1] == ULONG_MAX) - trace->nr_entries--; - trace->max_entries = trace->nr_entries; nr_stack_trace_entries += trace->nr_entries;