From patchwork Tue Jul 25 09:34:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?S3Vhbi1ZaW5nIExlZSAo5p2O5Yag56mOKQ==?= X-Patchwork-Id: 13326244 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 ACFCAC0015E for ; Tue, 25 Jul 2023 09:55:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=yPZv3tM9vTtpWd34AkCCKWUdpVmNx/aOuZOzG2VcV74=; b=WuJHlzhKMLKARc1pMc7Bu0kA37 4E/gLRjDdmNaMmHcVXHQfe7VUQJIRrSp30+wxJNDTa2InH5CeXf5LhPIsUoszi9PTs/VmF5gGzf4v +Tj0EuVphDAKsbuZfS+t3e14snrB2wxRVYGeRtwUlmBXS/dYRmzdpTWDR6IDI38xd5RF9N88wBIWv gMLHdovveIl9mWqN3cgSBbX65OSwyIv0OmKSj+X3mz2OlGXFxCrWhym2Rck7AezMGAWSZTrj23m8Y gpwiOLXRKiLomoGXtIIHRyr4uZ8xeykAwqp6Rfi2Elcq7wErQB7gMcNRgDnv3iQZhd0AD1SF3ui6A pwk0Anlw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qOEli-0070fx-1V; Tue, 25 Jul 2023 09:55:50 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qOElf-0070eq-1e; Tue, 25 Jul 2023 09:55:49 +0000 X-UUID: 6888f23a2ad111ee912e1518a6540028-20230725 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=yPZv3tM9vTtpWd34AkCCKWUdpVmNx/aOuZOzG2VcV74=; b=r2NxIXm8d7FUY+Nyld7O5AzqQjHDZ6hIX0c+G1WwpEfMiiUxWmCkSIOPDzJWExF2/+gdoL9BaeXCyAj2SOnFsjmbxKhII/uZQct7ZG52cRk38a/HSBmUhTotz2q+MCZUaeTXdYRMIUKVWwUZsucyvQbDlzZc8oHnDOBI0FUKcUA=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.29,REQID:fcf75e59-db8a-4c80-b36a-bf95183da962,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:e7562a7,CLOUDID:114a6e42-d291-4e62-b539-43d7d78362ba,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR: NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_ULN X-UUID: 6888f23a2ad111ee912e1518a6540028-20230725 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1047767663; Tue, 25 Jul 2023 02:55:38 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Tue, 25 Jul 2023 17:35:34 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Tue, 25 Jul 2023 17:35:34 +0800 From: Kuan-Ying Lee To: Jan Kiszka , Kieran Bingham , Matthias Brugger , AngeloGioacchino Del Regno CC: , , , , , , , Kuan-Ying Lee , , Subject: [PATCH 5/8] scripts/gdb/stackdepot: Add stackdepot support Date: Tue, 25 Jul 2023 17:34:55 +0800 Message-ID: <20230725093458.30064-6-Kuan-Ying.Lee@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230725093458.30064-1-Kuan-Ying.Lee@mediatek.com> References: <20230725093458.30064-1-Kuan-Ying.Lee@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230725_025547_704548_492B5578 X-CRM114-Status: GOOD ( 15.42 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Add support for printing the backtrace of stackdepot handle. This is the preparation patch for dumping page_owner, slabtrace usage. Signed-off-by: Kuan-Ying Lee --- scripts/gdb/linux/constants.py.in | 1 + scripts/gdb/linux/stackdepot.py | 54 +++++++++++++++++++++++++++++++ scripts/gdb/vmlinux-gdb.py | 1 + 3 files changed, 56 insertions(+) create mode 100644 scripts/gdb/linux/stackdepot.py diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in index 7c44222bbf23..ec88c9affdd2 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -133,3 +133,4 @@ LX_CONFIG(CONFIG_VMAP_STACK) if IS_BUILTIN(CONFIG_NUMA): LX_VALUE(CONFIG_NODES_SHIFT) LX_CONFIG(CONFIG_DEBUG_VIRTUAL) +LX_CONFIG(CONFIG_STACKDEPOT) diff --git a/scripts/gdb/linux/stackdepot.py b/scripts/gdb/linux/stackdepot.py new file mode 100644 index 000000000000..03b5eb19f056 --- /dev/null +++ b/scripts/gdb/linux/stackdepot.py @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (c) 2023 MediaTek Inc. +# +# Authors: +# Kuan-Ying Lee +# + +import gdb +from linux import utils, constants + +stack_record_type = utils.CachedType('struct stack_record') +DEPOT_STACK_ALIGN = 4 + +def stack_depot_fetch(handle): + global DEPOT_STACK_ALIGN + global stack_record_type + + stack_depot_disabled = gdb.parse_and_eval('stack_depot_disabled') + + if stack_depot_disabled: + raise gdb.GdbError("stack_depot_disabled\n") + + handle_parts_t = gdb.lookup_type("union handle_parts") + parts = handle.cast(handle_parts_t) + offset = parts['offset'] << DEPOT_STACK_ALIGN + pool_index_cached = gdb.parse_and_eval('pool_index') + + if parts['pool_index'] > pool_index_cached: + gdb.write("pool index %d out of bounds (%d) for stack id 0x%08x\n" % (parts['pool_index'], pool_index_cached, handle)) + return gdb.Value(0), 0 + + stack_pools = gdb.parse_and_eval('stack_pools') + + try: + pool = stack_pools[parts['pool_index']] + stack = (pool + gdb.Value(offset).cast(utils.get_size_t_type())).cast(stack_record_type.get_type().pointer()) + size = int(stack['size'].cast(utils.get_ulong_type())) + return stack['entries'], size + except Exception as e: + gdb.write("%s\n" % e) + return gdb.Value(0), 0 + +def stack_depot_print(handle): + if not constants.LX_CONFIG_STACKDEPOT: + raise gdb.GdbError("CONFIG_STACKDEPOT is not enabled") + + entries, nr_entries = stack_depot_fetch(handle) + if nr_entries > 0: + for i in range(0, nr_entries): + try: + gdb.execute("x /i 0x%x" % (int(entries[i]))) + except Exception as e: + gdb.write("%s\n" % e) diff --git a/scripts/gdb/vmlinux-gdb.py b/scripts/gdb/vmlinux-gdb.py index fd24574bcec9..24f149694b81 100644 --- a/scripts/gdb/vmlinux-gdb.py +++ b/scripts/gdb/vmlinux-gdb.py @@ -45,3 +45,4 @@ else: import linux.radixtree import linux.interrupts import linux.mm + import linux.stackdepot