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objtool: Move kernel headers/code sync check to a script

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Replace the nasty diff checks in the objtool Makefile with a clean bash
script, and make the warnings more specific.

Heavily inspired by tools/perf/check-headers.sh.

Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/ab015f15ccd8c0c6008493c3c6ee3d495eaf2927.1509974346.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Josh Poimboeuf 2017-11-06 07:21:51 -06:00 committed by Ingo Molnar
parent 6a77cff819
commit 3bd51c5a37
2 changed files with 30 additions and 15 deletions
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16
tools/objtool/Makefile
View File

@ -43,22 +43,8 @@ include $(srctree)/tools/build/Makefile.include
$(OBJTOOL_IN): fixdep FORCE
@$(MAKE) $(build)=objtool
# Busybox's diff doesn't have -I, avoid warning in that case
#
$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
@(diff -I 2>&1 | grep -q 'option requires an argument' && \
test -d ../../kernel -a -d ../../tools -a -d ../objtool && (( \
diff arch/x86/lib/insn.c ../../arch/x86/lib/insn.c >/dev/null && \
diff arch/x86/lib/inat.c ../../arch/x86/lib/inat.c >/dev/null && \
diff arch/x86/lib/x86-opcode-map.txt ../../arch/x86/lib/x86-opcode-map.txt >/dev/null && \
diff arch/x86/tools/gen-insn-attr-x86.awk ../../arch/x86/tools/gen-insn-attr-x86.awk >/dev/null && \
diff arch/x86/include/asm/insn.h ../../arch/x86/include/asm/insn.h >/dev/null && \
diff arch/x86/include/asm/inat.h ../../arch/x86/include/asm/inat.h >/dev/null && \
diff arch/x86/include/asm/inat_types.h ../../arch/x86/include/asm/inat_types.h >/dev/null) \
|| echo "warning: objtool: x86 instruction decoder differs from kernel" >&2 )) || true
@(test -d ../../kernel -a -d ../../tools -a -d ../objtool && (( \
diff ../../arch/x86/include/asm/orc_types.h arch/x86/include/asm/orc_types.h >/dev/null) \
|| echo "warning: objtool: orc_types.h differs from kernel" >&2 )) || true
@./sync-check.sh
$(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@

29
tools/objtool/sync-check.sh Executable file
View File

@ -0,0 +1,29 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
FILES='
arch/x86/lib/insn.c
arch/x86/lib/inat.c
arch/x86/lib/x86-opcode-map.txt
arch/x86/tools/gen-insn-attr-x86.awk
arch/x86/include/asm/insn.h
arch/x86/include/asm/inat.h
arch/x86/include/asm/inat_types.h
arch/x86/include/asm/orc_types.h
'
check()
{
local file=$1
diff $file ../../$file > /dev/null ||
echo "Warning: synced file at 'tools/objtool/$file' differs from latest kernel version at '$file'"
}
if [ ! -d ../../kernel ] || [ ! -d ../../tools ] || [ ! -d ../objtool ]; then
exit 0
fi
for i in $FILES; do
check $i
done