From patchwork Thu Apr 25 09:45:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 10916569 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EAEF0161F for ; Thu, 25 Apr 2019 09:59:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DC7511FF65 for ; Thu, 25 Apr 2019 09:59:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CD6D428A28; Thu, 25 Apr 2019 09:59:50 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7EAA61FF65 for ; Thu, 25 Apr 2019 09:59:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729126AbfDYJ7o (ORCPT ); Thu, 25 Apr 2019 05:59:44 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:57664 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728077AbfDYJ7o (ORCPT ); Thu, 25 Apr 2019 05:59:44 -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 1hJb9r-0001rD-Kz; Thu, 25 Apr 2019 11:59:11 +0200 Message-Id: <20190425094801.771410441@linutronix.de> User-Agent: quilt/0.65 Date: Thu, 25 Apr 2019 11:45:00 +0200 From: Thomas Gleixner To: LKML Cc: Josh Poimboeuf , x86@kernel.org, Andy Lutomirski , Christoph Lameter , Andrew Morton , Pekka Enberg , linux-mm@kvack.org, David Rientjes , Steven Rostedt , Alexander Potapenko , Alexey Dobriyan , Catalin Marinas , Dmitry Vyukov , Andrey Ryabinin , kasan-dev@googlegroups.com, Mike Rapoport , Akinobu Mita , Christoph Hellwig , iommu@lists.linux-foundation.org, Robin Murphy , Marek Szyprowski , Johannes Thumshirn , David Sterba , Chris Mason , Josef Bacik , linux-btrfs@vger.kernel.org, dm-devel@redhat.com, Mike Snitzer , Alasdair Kergon , Daniel Vetter , intel-gfx@lists.freedesktop.org, Joonas Lahtinen , Maarten Lankhorst , dri-devel@lists.freedesktop.org, David Airlie , Jani Nikula , Rodrigo Vivi , Tom Zanussi , Miroslav Benes , linux-arch@vger.kernel.org Subject: [patch V3 07/29] mm/slub: Simplify stack trace retrieval References: <20190425094453.875139013@linutronix.de> MIME-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Replace the indirection through struct stack_trace with an invocation of the storage array based interface. Signed-off-by: Thomas Gleixner Acked-by: Christoph Lameter Cc: Andrew Morton Cc: Pekka Enberg Cc: linux-mm@kvack.org Cc: David Rientjes --- mm/slub.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) --- a/mm/slub.c +++ b/mm/slub.c @@ -552,18 +552,14 @@ static void set_track(struct kmem_cache if (addr) { #ifdef CONFIG_STACKTRACE - struct stack_trace trace; + unsigned int nr_entries; - trace.nr_entries = 0; - trace.max_entries = TRACK_ADDRS_COUNT; - trace.entries = p->addrs; - trace.skip = 3; metadata_access_enable(); - save_stack_trace(&trace); + nr_entries = stack_trace_save(p->addrs, TRACK_ADDRS_COUNT, 3); metadata_access_disable(); - if (trace.nr_entries < TRACK_ADDRS_COUNT) - p->addrs[trace.nr_entries] = 0; + if (nr_entries < TRACK_ADDRS_COUNT) + p->addrs[nr_entries] = 0; #endif p->addr = addr; p->cpu = smp_processor_id();