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=-8.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT 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 A16CDC43461 for ; Mon, 14 Sep 2020 15:42:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4C1432074B for ; Mon, 14 Sep 2020 15:42:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600098137; bh=1/HRpWVLm3KozpwWOHhLU5lAY+Y9eor2wMD4c3TuAOk=; h=From:To:Cc:Subject:Date:List-ID:From; b=VURmI6bV3P4eMaCKrsKjIiAP5C4otnSi28rvtc5k6uSn8AqzBidMxk1Flw/i7ajI5 CqllZ1qcsZki8ngR1BGBibI5/d8fw4p3LhIfQElyKI5tBS6+mvap9SZSRu7it+x+zO 0rOK5DdC/+ECwBReQ7MMhNX66EHn/Dbpbgxnbbfs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726463AbgINPmO (ORCPT ); Mon, 14 Sep 2020 11:42:14 -0400 Received: from mail.kernel.org ([198.145.29.99]:49154 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726065AbgINPjp (ORCPT ); Mon, 14 Sep 2020 11:39:45 -0400 Received: from localhost (fw-tnat.cambridge.arm.com [217.140.96.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A650520756; Mon, 14 Sep 2020 15:39:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600097985; bh=1/HRpWVLm3KozpwWOHhLU5lAY+Y9eor2wMD4c3TuAOk=; h=From:To:Cc:Subject:Date:From; b=0sLp88SevaVMui3fppmWjovac2mIWKCqW/heaoZNysr/TNOkFyrx477mDq0cl7XBD WLQK1auUTfxVBFekcIw2ISS2ERAe5fjczE/IRG2oI7/pTNKz++tX2ZwTXMjvMRKFH2 NZzjzeZRq0d/xr6AnD0XOWKC9xK8uMwXiisY6k7o= From: Mark Brown To: Catalin Marinas , Will Deacon Cc: Mark Rutland , Vasily Gorbik , Heiko Carstens , Borislav Petkov , Thomas Gleixner , "H . Peter Anvin" , Christian Borntraeger , Ingo Molnar , Jiri Slaby , Miroslav Benes , x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, Mark Brown Subject: [PATCH v3 0/3] arm64: Convert to ARCH_STACKWALK Date: Mon, 14 Sep 2020 16:34:06 +0100 Message-Id: <20200914153409.25097-1-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series updates the arm64 stacktrace code to use the newer and much simpler arch_stack_walk() interface, the main benefit being a single entry point to the arch code with no need for the arch code to worry about skipping frames. Along the way I noticed that the reliable parameter to the arch_stack_walk() callback appears to be redundant so there's also a patch here removing that from the existing code to simplify the interface. This is preparatory work for implementing reliable stack trace for arm64. v3: - Rebase onto v5.9-rc3. - Fix handling of task == current. - Flip the sense of the walk_stackframe() callback. v2: - Rebase onto v5.9-rc1. Mark Brown (3): stacktrace: Remove reliable argument from arch_stack_walk() callback arm64: stacktrace: Make stack walk callback consistent with generic code arm64: stacktrace: Convert to ARCH_STACKWALK arch/arm64/Kconfig | 1 + arch/arm64/include/asm/stacktrace.h | 2 +- arch/arm64/kernel/perf_callchain.c | 6 +-- arch/arm64/kernel/return_address.c | 8 +-- arch/arm64/kernel/stacktrace.c | 84 +++++------------------------ arch/s390/kernel/stacktrace.c | 4 +- arch/x86/kernel/stacktrace.c | 10 ++-- include/linux/stacktrace.h | 5 +- kernel/stacktrace.c | 8 ++- 9 files changed, 32 insertions(+), 96 deletions(-) base-commit: f75aef392f869018f78cfedf3c320a6b3fcfda6b -- 2.20.1