From patchwork Tue Aug 8 08:30:18 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: 13346168 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 603E813AC7 for ; Tue, 8 Aug 2023 15:48:11 +0000 (UTC) Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 67D48E62; Tue, 8 Aug 2023 08:48:07 -0700 (PDT) X-UUID: e0ad852e35c511ee9cb5633481061a41-20230808 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=3bTI4ezWT0dRlseV1XH1auN5umDiuiT9sp0ElLkplnk=; b=qyrZII5nSYfDgdidaw0URf4ZofwG1EVXxfgB82I25iLr1fGG5VBErD7TvzBhg96A9B5+kb/ogGfTQ4OCbf6AoR+58kbRMDd7K0JiOR/BAjneLgRzr2OohbVyf9EijJM8VpITHX4ggUNOukzOB5mkO2uy5lmhSBaUbapqtcfdldM=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.31,REQID:7ff864a1-1a3f-46a3-8abc-b4524e19721c,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:95 X-CID-INFO: VERSION:1.1.31,REQID:7ff864a1-1a3f-46a3-8abc-b4524e19721c,IP:0,URL :0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTION :quarantine,TS:95 X-CID-META: VersionHash:0ad78a4,CLOUDID:59b6f042-d291-4e62-b539-43d7d78362ba,B ulkID:230808163051S0PE58AX,BulkQuantity:0,Recheck:0,SF:38|29|28|17|19|48,T C:nil,Content:0,EDM:-3,IP:nil,URL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,CO L: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_SDM,TF_CID_SPAM_ASC,TF_CID_SPAM_FAS, TF_CID_SPAM_FSD,TF_CID_SPAM_ULN X-UUID: e0ad852e35c511ee9cb5633481061a41-20230808 Received: from mtkmbs14n1.mediatek.inc [(172.21.101.75)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 996264844; Tue, 08 Aug 2023 16:30:48 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) 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, 8 Aug 2023 16:30:47 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Tue, 8 Aug 2023 16:30:47 +0800 From: Kuan-Ying Lee To: Jan Kiszka , Kieran Bingham , Matthias Brugger , AngeloGioacchino Del Regno CC: , , , , , , , Kuan-Ying Lee , , , Subject: [PATCH v2 8/8] scripts/gdb/vmalloc: add vmallocinfo support Date: Tue, 8 Aug 2023 16:30:18 +0800 Message-ID: <20230808083020.22254-9-Kuan-Ying.Lee@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230808083020.22254-1-Kuan-Ying.Lee@mediatek.com> References: <20230808083020.22254-1-Kuan-Ying.Lee@mediatek.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MTK: N X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_PASS,SPF_PASS, UNPARSEABLE_RELAY,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net This GDB script shows the vmallocinfo for user to analyze the vmalloc memory usage. Example output: 0xffff800008000000-0xffff800008009000 36864 pages=8 vmalloc 0xffff800008009000-0xffff80000800b000 8192 phys=0x8020000 ioremap 0xffff80000800b000-0xffff80000800d000 8192 pages=1 vmalloc 0xffff80000800d000-0xffff80000800f000 8192 pages=1 vmalloc 0xffff800008010000-0xffff80000ad30000 47316992 phys=0x40210000 vmap 0xffff80000ad30000-0xffff80000c1c0000 21561344 phys=0x42f30000 vmap 0xffff80000c1c0000-0xffff80000c370000 1769472 phys=0x443c0000 vmap 0xffff80000c370000-0xffff80000de90000 28442624 phys=0x44570000 vmap 0xffff80000de90000-0xffff80000f4c1000 23269376 phys=0x46090000 vmap 0xffff80000f4c1000-0xffff80000f4c3000 8192 pages=1 vmalloc 0xffff80000f4c3000-0xffff80000f4c5000 8192 pages=1 vmalloc 0xffff80000f4c5000-0xffff80000f4c7000 8192 pages=1 vmalloc Signed-off-by: Kuan-Ying Lee --- scripts/gdb/linux/constants.py.in | 8 +++++ scripts/gdb/linux/vmalloc.py | 56 +++++++++++++++++++++++++++++++ scripts/gdb/vmlinux-gdb.py | 1 + 3 files changed, 65 insertions(+) create mode 100644 scripts/gdb/linux/vmalloc.py diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in index 03fa6d2cfe01..e3517d4ab8ec 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -22,6 +22,7 @@ #include #include #include +#include /* We need to stringify expanded macros so that they can be parsed */ @@ -91,6 +92,13 @@ LX_GDBPARSED(RADIX_TREE_MAP_SIZE) LX_GDBPARSED(RADIX_TREE_MAP_SHIFT) LX_GDBPARSED(RADIX_TREE_MAP_MASK) +/* linux/vmalloc.h */ +LX_VALUE(VM_IOREMAP) +LX_VALUE(VM_ALLOC) +LX_VALUE(VM_MAP) +LX_VALUE(VM_USERMAP) +LX_VALUE(VM_DMA_COHERENT) + /* linux/page_ext.h */ if IS_BUILTIN(CONFIG_PAGE_OWNER): LX_GDBPARSED(PAGE_EXT_OWNER) diff --git a/scripts/gdb/linux/vmalloc.py b/scripts/gdb/linux/vmalloc.py new file mode 100644 index 000000000000..48e4a4fae7bb --- /dev/null +++ b/scripts/gdb/linux/vmalloc.py @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (c) 2023 MediaTek Inc. +# +# Authors: +# Kuan-Ying Lee +# + +import gdb +import re +from linux import lists, utils, stackdepot, constants, mm + +vmap_area_type = utils.CachedType('struct vmap_area') +vmap_area_ptr_type = vmap_area_type.get_type().pointer() + +def is_vmalloc_addr(x): + pg_ops = mm.page_ops().ops + addr = pg_ops.kasan_reset_tag(x) + return addr >= pg_ops.VMALLOC_START and addr < pg_ops.VMALLOC_END + +class LxVmallocInfo(gdb.Command): + """Show vmallocinfo""" + + def __init__(self): + super(LxVmallocInfo, self).__init__("lx-vmallocinfo", gdb.COMMAND_DATA) + + def invoke(self, arg, from_tty): + vmap_area_list = gdb.parse_and_eval('vmap_area_list') + for vmap_area in lists.list_for_each_entry(vmap_area_list, vmap_area_ptr_type, "list"): + if not vmap_area['vm']: + gdb.write("0x%x-0x%x %10d vm_map_ram\n" % (vmap_area['va_start'], vmap_area['va_end'], + vmap_area['va_end'] - vmap_area['va_start'])) + continue + v = vmap_area['vm'] + gdb.write("0x%x-0x%x %10d" % (v['addr'], v['addr'] + v['size'], v['size'])) + if v['caller']: + gdb.write(" %s" % str(v['caller']).split(' ')[-1]) + if v['nr_pages']: + gdb.write(" pages=%d" % v['nr_pages']) + if v['phys_addr']: + gdb.write(" phys=0x%x" % v['phys_addr']) + if v['flags'] & constants.LX_VM_IOREMAP: + gdb.write(" ioremap") + if v['flags'] & constants.LX_VM_ALLOC: + gdb.write(" vmalloc") + if v['flags'] & constants.LX_VM_MAP: + gdb.write(" vmap") + if v['flags'] & constants.LX_VM_USERMAP: + gdb.write(" user") + if v['flags'] & constants.LX_VM_DMA_COHERENT: + gdb.write(" dma-coherent") + if is_vmalloc_addr(v['pages']): + gdb.write(" vpages") + gdb.write("\n") + +LxVmallocInfo() diff --git a/scripts/gdb/vmlinux-gdb.py b/scripts/gdb/vmlinux-gdb.py index 2526364f31fd..fc53cdf286f1 100644 --- a/scripts/gdb/vmlinux-gdb.py +++ b/scripts/gdb/vmlinux-gdb.py @@ -48,3 +48,4 @@ else: import linux.stackdepot import linux.page_owner import linux.slab + import linux.vmalloc