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Tue, 08 Aug 2023 01:31:12 -0700 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs10n1.mediatek.inc (172.21.101.34) 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 16:30:38 +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 16:30:38 +0800 From: Kuan-Ying Lee To: Jan Kiszka , Kieran Bingham , Matthias Brugger , AngeloGioacchino Del Regno CC: , , , , , , , Kuan-Ying Lee , , Subject: [PATCH v2 5/8] scripts/gdb/stackdepot: Add stackdepot support Date: Tue, 8 Aug 2023 16:30:15 +0800 Message-ID: <20230808083020.22254-6-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> MIME-Version: 1.0 X-MTK: N X-Stat-Signature: z8zt87skt8yu7w8k3souw4j973nq7ha8 X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: C9C01180007 X-Rspam-User: X-HE-Tag: 1691483475-743106 X-HE-Meta: U2FsdGVkX1+B+kRjfYyYzZ/DYxsrQ3NYqGV26HpOF8tz2lNWBly7MCyJwgHy5veHifzd5wJ3BHRNHXx7ck20Y0OwziL3x1rVzRgStE78eTNFVhMcjzqfQLh6rZ+uz2hB6yXmBs9K3UJuaAGZ5cPImt1P5ity8LgkEH1ll2oIrgP84aeigd3kc5ZZPvc9RtRy7YisoJ7Sjwjdz4bHH5HITkN66gxgd7j9Gr0/PxU7LbTZEft30UVT/txZRlwDddio85w2lXRI/DMNOROHDQUMc/qpBV1p0xXCqGBS4I3yXQoJaAJrQFr336oH7sBNs0j8sHZtr9U9581Z0HebmK71KHxbmwY6zTv+asW6WCpAI3ieEtXC5yk4r7V9pyXofulRblwcFr+tw+I1Hk+k2hZraus/W955eZdYcY6nS4FaX8U6QKVBpUrmqzoHwZe2fGC2pvsGiNFJk2Z0xf2NJ6kNgyr77vO4u2hSdznTbilu8Xz0amyQ+rvV3ufft3lX4gMraUZbP16RoE0rti9MXx3PXLJBTdS7XcEM2qzf7mJgS1xjQK7QLqpXodRTB/nVS0LR0hDTUVFOkD0HITWfnM6dY6kk59eTdMk2TbR9hNxC4PoxUDKS8pCMyxqWdEQZLx81AzK/C61YoUV9VoPCav5duZab2eGrk47ltmRtCWvr/WQvkN499DdPB7lyaqs1vCB5RgzLpNAP+TF9ufyVnybnRVUd1p+l7TOhzGL5L4o85hLqEkc/Y20QtMqX18DULN4YWkm9EsCpQs9fYGzTLRz15MuLPfutsRL3MLFZU6ydV09eG00iCwvvYFl/pz1FUVZEi4VQTH/4EcSGimbFDgTAkXyNdxUNq1tZKzffMonhfFSZX2r5HmKtoldNcNVAv7nbf9HSI+WbdElZBg20w87Dgj1XCbpKs5OYuSRElioEXlx4n8BG3p5ngu8IW7//vHiHREBFqPoR5y4TQJOrpTw DkDLmw9d S0NHjKJJWJWMt4vuO/2xu+GdXlv6ryASvKEn7yKeuq5psctOGnnb/7HazDQIy2RGUmKOp1TyiXLOsw+xvfPmttH//N0up74JSUuM+ALjkGdVajlpGdnf/n+6I+bjY+XMie7M38RgeX34y0jcx7vtKHZsXNhcVQdbLIRi4Ta6WZtPp45rNg1bLb4JI+KBnv5Zgnlyt7y4yqkAyxVJmBcq6Ie7CrdDDGWwGJ8U5lVaAD4YXzrkC897p63kOjg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 | 55 +++++++++++++++++++++++++++++++ scripts/gdb/vmlinux-gdb.py | 1 + 3 files changed, 57 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 0805aeab3dcd..f33be26253d2 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -128,3 +128,4 @@ 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..047d329a6a12 --- /dev/null +++ b/scripts/gdb/linux/stackdepot.py @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (c) 2023 MediaTek Inc. +# +# Authors: +# Kuan-Ying Lee +# + +import gdb +from linux import utils, constants + +if constants.LX_CONFIG_STACKDEPOT: + 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