Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753946Ab2JCLW0 (ORCPT ); Wed, 3 Oct 2012 07:22:26 -0400 Received: from mout.web.de ([212.227.17.12]:64079 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753692Ab2JCLWM (ORCPT ); Wed, 3 Oct 2012 07:22:12 -0400 From: Jan Kiszka To: linux-kernel@vger.kernel.org Cc: Jason Wessel , kgdb-bugreport@lists.sourceforge.net, "David S. Miller" , Fenghua Yu , Kay Sievers , linux-ia64@vger.kernel.org, linux-kbuild@vger.kernel.org, Michal Marek , sparclinux@vger.kernel.org, Tony Luck Subject: [PATCH 00/13] Add gdb python scripts as kernel debugging helpers Date: Wed, 3 Oct 2012 13:21:31 +0200 Message-Id: X-Mailer: git-send-email 1.7.3.4 X-Provags-ID: V02:K0:4O61c8GoCCH1pbVKtrv2fsc0kEBWRCgRUSh4+1WFcAH MxW4/MoKKkRNLaWGqDSwU2H3TSHlg6jxPPLPLKxFh4RHkcRxfk 3gXtHE3baPbc/JfCHsewS96Y/NV1HjArNRrolzhsS6qYnAsTxB g/NEF1vYItwDGigQjNq2j3fLInSe3tPdOS9z6J8hp2skE31uxW L1/VJ+wBLI7sVyTMy3XCA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3464 Lines: 83 I'm sitting too long on this stuff, time to finally role it out: This adds the infrastructure and first tools that make kernel debugging through gdb more comfortable. Since 7.0, gdb supports python scripting. And this opens the doors to automate steps like the tedious loading of module symbols at the right address, resolving per-cpu variables or even retrieving the current kernel log without resuming an stopped target. Many of the helpers naturally depend on the layout of structures or internal mechanics of the kernel. So the best place to maintain such things, keeping them consistent with the corresponding kernel is, well, the kernel itself. While these scripts have been originally developed for debugging via QEMU/KVM, I've now also added the required bits for KGDB. Works fine, but as QEMU/KVM tends to outperform KGDB it remains the recommendation - when available. There are two architecture dependencies so far, one regarding per-cpu, the other regarding thread_info calculation. None of them I was able to test on a target, so I'm counting on review/testing by the corresponding communities. This series should be considered the foundation of much more kernel state exploration helper, e.g. around tasks, timers, locks, sockets - I guess people will have even more ideas. Hope it's useful! PS: Also available via git://git.kiszka.org/linux.git queues/gdb-scripts CC: "David S. Miller" CC: Fenghua Yu CC: Kay Sievers CC: linux-ia64@vger.kernel.org CC: linux-kbuild@vger.kernel.org CC: Michal Marek CC: sparclinux@vger.kernel.org CC: Tony Luck Jan Kiszka (13): scripts/gdb: Add infrastructure scripts/gdb: Add container_of helper and convenience function scripts/gdb: Add lx-symbols command scripts/gdb: Add get_target_endianness helper scripts/gdb: Add read_u16/32/64 helpers scripts/gdb: Add lx-dmesg command scripts/gdb: Add task iteration helper scripts/gdb: Add helper and convenience function to look up tasks scripts/gdb: Add is_target_arch helper scripts/gdb: Add internal helper and convenience function to retrieve thread_info scripts/gdb: Add get_gdbserver_type helper scripts/gdb: Add internal helper and convenience function for per-cpu lookup scripts/gdb: Add lx_current convenience function Makefile | 6 ++- scripts/Makefile | 3 +- scripts/gdb/Makefile | 9 +++ scripts/gdb/dmesg.py | 63 +++++++++++++++++++++ scripts/gdb/percpu.py | 76 +++++++++++++++++++++++++ scripts/gdb/symbols.py | 88 +++++++++++++++++++++++++++++ scripts/gdb/task.py | 108 +++++++++++++++++++++++++++++++++++ scripts/gdb/utils.py | 134 ++++++++++++++++++++++++++++++++++++++++++++ scripts/gdb/vmlinux-gdb.py | 26 +++++++++ 9 files changed, 511 insertions(+), 2 deletions(-) create mode 100644 scripts/gdb/Makefile create mode 100644 scripts/gdb/dmesg.py create mode 100644 scripts/gdb/percpu.py create mode 100644 scripts/gdb/symbols.py create mode 100644 scripts/gdb/task.py create mode 100644 scripts/gdb/utils.py create mode 100644 scripts/gdb/vmlinux-gdb.py -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/