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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A64D6ECAAD6 for ; Fri, 26 Aug 2022 07:44:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245450AbiHZHoF (ORCPT ); Fri, 26 Aug 2022 03:44:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245435AbiHZHoD (ORCPT ); Fri, 26 Aug 2022 03:44:03 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 520B2C3F5E; Fri, 26 Aug 2022 00:44:02 -0700 (PDT) Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4MDWxH1ZNhzmVLR; Fri, 26 Aug 2022 15:41:39 +0800 (CST) Received: from kwepemm600010.china.huawei.com (7.193.23.86) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 26 Aug 2022 15:44:00 +0800 Received: from ubuntu1804.huawei.com (10.67.174.174) by kwepemm600010.china.huawei.com (7.193.23.86) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 26 Aug 2022 15:43:59 +0800 From: Li Huafei To: , , , , , CC: , , , , , , , , , , , , , , , , , , Subject: [PATCH RESEND v3 0/4] ARM: Convert to ARCH_STACKWALK Date: Fri, 26 Aug 2022 15:40:43 +0800 Message-ID: <20220826074047.107357-1-lihuafei1@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.67.174.174] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemm600010.china.huawei.com (7.193.23.86) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series mainly updates the ARM stack trace code to use the newer and simpler arch_stack_walk() interface (see patches 3 and 4). Two issues were fixed before that (see patches 1 and 2). v3 RESEND notes: Rebase to v6.0-rc1. It's been a month since I sent the v3. Linus told me I needed to add the patch to Russell's patch tracker myself, rebase to v6.0-rc1 before that. Thanks Linus for the tip! Since commit af6f23b88e95 ("ARM/dma-mapping: use the generic versions of dma_to_phys/phys_to_dma by default") and commit ae626eb97376 ("ARM/dma-mapping: use dma-direct unconditionally") modified arch/arm/Kconfig, there is a minor conflict with patch 4 when rebase. v3: https://lore.kernel.org/lkml/20220727040022.139387-1-lihuafei1@huawei.com/ - According to the discussion with Linus and Russell in v1: - Add a comment about "regs[1]" in patch 2, and remove the unnecessary ternary operator in the initialization of "frame->ex_frame". - Remove the patch "ARM: stacktrace: Allow stack trace saving for non-current tasks", and keep the check for not being able to unwind non-current tasks (including tasks running on other CPUs) when CONFIG_SMP=y in patch 4. - Rebase to linux-5.19-rc8. v2: https://lore.kernel.org/lkml/20220713110020.85511-1-lihuafei1@huawei.com/ - As suggested by Mark, the commit logs for patch 4 and 5 were refined for easy review. v1: https://lore.kernel.org/lkml/20220712021527.109921-1-lihuafei1@huawei.com/ Li Huafei (4): ARM: stacktrace: Skip frame pointer boundary check for call_with_stack() ARM: stacktrace: Avoid duplicate saving of exception PC value ARM: stacktrace: Make stack walk callback consistent with generic code ARM: stacktrace: Convert stacktrace to generic ARCH_STACKWALK arch/arm/Kconfig | 1 + arch/arm/include/asm/stacktrace.h | 8 +- arch/arm/kernel/perf_callchain.c | 9 +- arch/arm/kernel/return_address.c | 9 +- arch/arm/kernel/stacktrace.c | 191 ++++++++++++++---------------- arch/arm/lib/call_with_stack.S | 2 + 6 files changed, 110 insertions(+), 110 deletions(-) -- 2.17.1