From patchwork Wed Jul 13 11:00:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Huafei X-Patchwork-Id: 12916554 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 E5031C43334 for ; Wed, 13 Jul 2022 11:04:31 +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=4myr1XPsozsIljs1gN/R5elgOfAjkJ1cCWNgBLOSqCw=; b=O6ssxWFony9t5W Wa6a0KY835C+JS1acSpgZlG821MykzK5T2YGeh0Dejd5Z/K75ZIlZycd395tImQSGiBoGkEhf2oES wmY8xX41ybHNIx0aB11bOyvkIoXLrM9b0j4GOAUtVC0m1r16qeXKgi2QA0hLS+7iH1h8vlte5hhfu a0SjAyW+CV2KusTT9VdgH/Lp0DTvFBPEBkiCRYqxFDUK+Zu3MQlnW8jNlcUsCoCD5eqV0intYHhfy jMCR61X7AyzzJI9gDl1IsSCQm7riV0sgOBGKlt1++yqbyFipO3PauTv06rT/N2eyhnoQ+lQ8BEo81 xPjszlFVpHXBxxfuC7bQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oBa95-002uQx-UJ; Wed, 13 Jul 2022 11:03:09 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oBa8t-002uI6-Ch for linux-arm-kernel@lists.infradead.org; Wed, 13 Jul 2022 11:02:57 +0000 Received: from dggemv703-chm.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4LjZPR17BgzVfg0; Wed, 13 Jul 2022 18:59:07 +0800 (CST) Received: from kwepemm600010.china.huawei.com (7.193.23.86) by dggemv703-chm.china.huawei.com (10.3.19.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Wed, 13 Jul 2022 19:02:49 +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; Wed, 13 Jul 2022 19:02:48 +0800 From: Li Huafei To: , , , , CC: , , , , , , , , , , , , , , , , , , , Subject: [PATCH v2 0/5] ARM: Convert to ARCH_STACKWALK Date: Wed, 13 Jul 2022 19:00:15 +0800 Message-ID: <20220713110020.85511-1-lihuafei1@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.67.174.174] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) 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-20220713_040255_654687_029C0514 X-CRM114-Status: UNSURE ( 7.05 ) X-CRM114-Notice: Please train this message. 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. Two issues were fixed before that (see patch 1 and 2), as well as allowing stack_trace_save_tsk() to trace non-current tasks (see patch 3). v2: - 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 (5): ARM: stacktrace: Skip frame pointer boundary check for call_with_stack() ARM: stacktrace: Avoid duplicate saving of exception PC value ARM: stacktrace: Allow stack trace saving for non-current tasks 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 | 195 +++++++++++++----------------- arch/arm/lib/call_with_stack.S | 2 + 6 files changed, 105 insertions(+), 119 deletions(-)