linux-kernel - [PATCH v2 0/8] Add GDB memory helper commands

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Date:   Tue, 8 Aug 2023 16:30:10 +0800
From:   Kuan-Ying Lee <Kuan-Ying.Lee@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
CC:     <chinwen.chang@...iatek.com>, <qun-wei.lin@...iatek.com>,
        <linux-mm@...ck.org>, <linux-modules@...r.kernel.org>,
        <casper.li@...iatek.com>, <akpm@...ux-foundation.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Kuan-Ying Lee <Kuan-Ying.Lee@...iatek.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: [PATCH v2 0/8] Add GDB memory helper commands

Hi all,

I've created some GDB commands I think useful when I debug
some memory issues and kernel module issue.

For memory issue, we would like to get slabinfo, slabtrace,
page_owner and vmallocinfo to debug the memory issues.

For module issue, we would like to query kernel module name
when we get a module text address and load module
symbol by specific path.

Patch 1-2:
 - Add kernel module related command.
Patch 3-5:
 - Prepares for the memory-related command.
Patch 6-8:
 - Add memory-related commands.

V1->V2:
 - Fix s390 build error with defconfig (Stephen)
 - Use freeptr_t structure for dereference freepointer
   in slab
 - Add CONFIG_STACKDEPOT statement to handle stackdepot
   is disable
 - Add CONFIG_PAGE_OWNER statement to handle page owner
   is disable
 - Rebase to linux-next/next-20230808

Kuan-Ying Lee (8):
  scripts/gdb/symbols: add specific ko module load command
  scripts/gdb/modules: add get module text support
  scripts/gdb/utils: add common type usage
  scripts/gdb/aarch64: add aarch64 page operation helper commands and
    configs
  scripts/gdb/stackdepot: Add stackdepot support
  scripts/gdb/page_owner: add page owner support
  scripts/gdb/slab: Add slab support
  scripts/gdb/vmalloc: add vmallocinfo support

 scripts/gdb/linux/constants.py.in |  52 +++
 scripts/gdb/linux/mm.py           | 582 +++++++++++++++++++-----------
 scripts/gdb/linux/modules.py      |  32 +-
 scripts/gdb/linux/page_owner.py   | 190 ++++++++++
 scripts/gdb/linux/pgtable.py      | 222 ++++++++++++
 scripts/gdb/linux/slab.py         | 326 +++++++++++++++++
 scripts/gdb/linux/stackdepot.py   |  55 +++
 scripts/gdb/linux/symbols.py      |  23 +-
 scripts/gdb/linux/utils.py        |  20 +
 scripts/gdb/linux/vmalloc.py      |  56 +++
 scripts/gdb/vmlinux-gdb.py        |   7 +-
 11 files changed, 1358 insertions(+), 207 deletions(-)
 create mode 100644 scripts/gdb/linux/page_owner.py
 create mode 100644 scripts/gdb/linux/pgtable.py
 create mode 100644 scripts/gdb/linux/slab.py
 create mode 100644 scripts/gdb/linux/stackdepot.py
 create mode 100644 scripts/gdb/linux/vmalloc.py

-- 
2.18.0