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93863f3f85
Commit 9c7dc1dd89 ("objtool: Warn on functions with ambiguous
-ffunction-sections section names") only works for drivers which are
compiled on architectures supported by objtool.
Make a script to perform the same check for all architectures.
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/a6a49644a34964f7e02f3a8ce43af03e72817180.1763669451.git.jpoimboe@kernel.org
26 lines
638 B
Bash
Executable File
26 lines
638 B
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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#
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# Certain function names are disallowed due to section name ambiguities
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# introduced by -ffunction-sections.
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#
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# See the comment above TEXT_MAIN in include/asm-generic/vmlinux.lds.h.
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objfile="$1"
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if [ ! -f "$objfile" ]; then
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echo "usage: $0 <file.o>" >&2
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exit 1
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fi
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bad_symbols=$(nm "$objfile" | awk '$2 ~ /^[TtWw]$/ {print $3}' | grep -E '^(startup|exit|split|unlikely|hot|unknown)(\.|$)')
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if [ -n "$bad_symbols" ]; then
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echo "$bad_symbols" | while read -r sym; do
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echo "$objfile: error: $sym() function name creates ambiguity with -ffunction-sections" >&2
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done
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exit 1
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fi
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exit 0
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