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Here is a patch that adds a new -T option to genksyms for generating dumps of
the type definition that makes up the symbol version hashes. This allows to
trace modversion changes back to what caused them. The dump format is the
name of the type defined, followed by its definition (which is almost C):
s#list_head struct list_head { s#list_head * next , * prev ; }
The s#, u#, e#, and t# prefixes stand for struct, union, enum, and typedef.
The exported symbols do not define types, and thus do not have an x# prefix:
nfs4_acl_get_whotype int nfs4_acl_get_whotype ( char * , t#u32 )
The symbol type defintion of a single file can be generated with:
make fs/jbd/journal.symtypes
If KBUILD_SYMTYPES is defined, all the *.symtypes of all object files that
export symbols are generated.
The single *.symtypes files can be combined into a single file after a kernel
build with a script like the following:
for f in $(find -name '*.symtypes' | sort); do
f=${f#./}
echo "/* ${f%.symtypes}.o */"
cat $f
echo
done \
| sed -e '\:UNKNOWN:d' \
-e 's:[,;] }:}:g' \
-e 's:\([[({]\) :\1:g' \
-e 's: \([])},;]\):\1:g' \
-e 's: $::' \
$f \
| awk '
/^.#/ { if (defined[$1] == $0) {
print $1
next
}
defined[$1] = $0
}
{ print }
'
When the kernel ABI changes, diffing individual *.symtype files, or the
combined files, against each other will show which symbol changes caused the
ABI changes. This can save a tremendous amount of time.
Dump the types that make up modversions
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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o remove all inlines
o declare everything static which is only used by genksyms.c
o delete unused functions
o delete unused variables
o delete unused stuff in genksyms.h
o properly ident genksyms.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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No fix-ups applied yet. Just the raw Lindent output.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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genksyms needs to know when a symbol must have a "_" prefex as is
true for a few architectures.
Pass $(ARCH) as commandline argument and hardcode what architectures that
needs this info.
Previous attemt to take it from elfconfig.h was br0ken since elfconfig.h
is a generated file.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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The scripts/genksyms/genksyms.c uses hardcoded "__crc_" prefix for
crc symbols in kernel and modules. The prefix should be replaced by
"MODULE_SYMBOL_PREFIX##__crc_" otherwise there will be warnings when
MODULE_SYMBOL_PREFIX is not NULL.
I am sorry my last patch for this issue is actually wrong. I revert
it in this patch.
Signed-off-by: Luke Yang <luke.adi@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
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