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https://github.com/torvalds/linux.git
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Jackie Liu
663cb6340c
Since commit1751e8a6cb("Rename superblock flags (MS_xyz -> SB_xyz)"), scripts/gdb should be updated to replace MS_xyz with SB_xyz. This change didn't directly affect the running operation of scripts/gdb until commite262e32d6b"vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled" removed the definitions used by constants.py. Update constants.py.in to utilise the new internal flags, matching the implementation at fs/proc_namespace.c::show_sb_opts. Note to stable,e262e32d6blanded in v5.0-rc1 (which was just released), so we'll want this picked back to 5.0 stable once this patch hits mainline (akpm just picked it up). Without this, debugging a kernel a kernel via GDB+QEMU is broken in the 5.0 release. [[email protected]: add fixes tag, reword commit message] Link: http://lkml.kernel.org/r/[email protected] Fixes:e262e32d6b"vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled" Signed-off-by: Jackie Liu <[email protected]> Signed-off-by: Kieran Bingham <[email protected]> Tested-by: Nick Desaulniers <[email protected]> Tested-by: Kieran Bingham <[email protected]> Cc: Felipe Balbi <[email protected]> Cc: Dan Robertson <[email protected]> Cc: Jan Kiszka <[email protected]> Cc: David Howells <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
60 lines
1.3 KiB
Plaintext
60 lines
1.3 KiB
Plaintext
/*
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* gdb helper commands and functions for Linux kernel debugging
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*
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* Kernel constants derived from include files.
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*
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* Copyright (c) 2016 Linaro Ltd
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*
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* Authors:
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* Kieran Bingham <[email protected]>
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*
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* This work is licensed under the terms of the GNU GPL version 2.
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*
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*/
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#include <linux/fs.h>
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#include <linux/mount.h>
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#include <linux/of_fdt.h>
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/* We need to stringify expanded macros so that they can be parsed */
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#define STRING(x) #x
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#define XSTRING(x) STRING(x)
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#define LX_VALUE(x) LX_##x = x
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#define LX_GDBPARSED(x) LX_##x = gdb.parse_and_eval(XSTRING(x))
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/*
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* IS_ENABLED generates (a || b) which is not compatible with python
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* We can only switch on configuration items we know are available
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* Therefore - IS_BUILTIN() is more appropriate
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*/
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#define LX_CONFIG(x) LX_##x = IS_BUILTIN(x)
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/* The build system will take care of deleting everything above this marker */
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<!-- end-c-headers -->
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import gdb
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/* linux/fs.h */
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LX_VALUE(SB_RDONLY)
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LX_VALUE(SB_SYNCHRONOUS)
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LX_VALUE(SB_MANDLOCK)
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LX_VALUE(SB_DIRSYNC)
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LX_VALUE(SB_NOATIME)
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LX_VALUE(SB_NODIRATIME)
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/* linux/mount.h */
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LX_VALUE(MNT_NOSUID)
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LX_VALUE(MNT_NODEV)
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LX_VALUE(MNT_NOEXEC)
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LX_VALUE(MNT_NOATIME)
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LX_VALUE(MNT_NODIRATIME)
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LX_VALUE(MNT_RELATIME)
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/* linux/of_fdt.h> */
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LX_VALUE(OF_DT_HEADER)
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/* Kernel Configs */
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LX_CONFIG(CONFIG_OF)
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