From patchwork Fri Aug 26 07:40:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Huafei X-Patchwork-Id: 12955620 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 35868ECAAA3 for ; Fri, 26 Aug 2022 07:45:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=aBpsENK/mzfhhlrMyNTWiqQYfQsaiVkAC1gP84dres0=; b=DSqx8LxMUk6UQi efHVDK896l5Am8a7CjHE5oI7OJCN0hQhe66X65amqdYmrVGmcVSPrHj9v/Z8v88idMISzxpj35o4U sB1blX8xWAF65EY6P7gCpRj0WywKSreaKAUV7hI5/tmbLnTQMzMGpcmRHxHLDGrzaPsZ4c5G1R8E4 rhHjVkE4aiCb4RrzCUKMcVpxLemYSQb3M9MGFrJHOKW4Ov4qyIYNiiFRZDPF52wJUFVtR5jhEap2E XHsbznKySfwQ4aC6O5oyMhdRxCYEY7c3OJqNkHk1nUbvqh4hoLjJG/r+nQbTQRN7Vq4lcCUS/OVi8 OUT+Et7yRMudn3Emf1sg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oRU0l-00GUAl-ER; Fri, 26 Aug 2022 07:44:15 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oRU0i-00GU6j-A4 for linux-arm-kernel@lists.infradead.org; Fri, 26 Aug 2022 07:44:13 +0000 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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220826_004412_578359_CE823013 X-CRM114-Status: GOOD ( 11.57 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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(-)