1 files changed, 163 insertions, 0 deletions
diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh
new file mode 100755
index 000000000..9f085aa09
--- /dev/null
+++ b/tools/perf/check-headers.sh
@@ -0,0 +1,163 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+FILES='
+include/uapi/linux/const.h
+include/uapi/drm/drm.h
+include/uapi/drm/i915_drm.h
+include/uapi/linux/fadvise.h
+include/uapi/linux/fcntl.h
+include/uapi/linux/fs.h
+include/uapi/linux/fscrypt.h
+include/uapi/linux/kcmp.h
+include/uapi/linux/kvm.h
+include/uapi/linux/in.h
+include/uapi/linux/mount.h
+include/uapi/linux/openat2.h
+include/uapi/linux/perf_event.h
+include/uapi/linux/prctl.h
+include/uapi/linux/sched.h
+include/uapi/linux/stat.h
+include/uapi/linux/usbdevice_fs.h
+include/uapi/linux/vhost.h
+include/uapi/sound/asound.h
+include/linux/bits.h
+include/vdso/bits.h
+include/linux/const.h
+include/vdso/const.h
+include/linux/hash.h
+include/uapi/linux/hw_breakpoint.h
+arch/x86/include/asm/disabled-features.h
+arch/x86/include/asm/required-features.h
+arch/x86/include/asm/cpufeatures.h
+arch/x86/include/asm/inat_types.h
+arch/x86/include/asm/emulate_prefix.h
+arch/x86/include/asm/irq_vectors.h
+arch/x86/include/asm/msr-index.h
+arch/x86/include/uapi/asm/prctl.h
+arch/x86/lib/x86-opcode-map.txt
+arch/x86/tools/gen-insn-attr-x86.awk
+arch/arm/include/uapi/asm/perf_regs.h
+arch/arm64/include/uapi/asm/perf_regs.h
+arch/powerpc/include/uapi/asm/perf_regs.h
+arch/s390/include/uapi/asm/perf_regs.h
+arch/x86/include/uapi/asm/perf_regs.h
+arch/x86/include/uapi/asm/kvm.h
+arch/x86/include/uapi/asm/kvm_perf.h
+arch/x86/include/uapi/asm/svm.h
+arch/x86/include/uapi/asm/unistd.h
+arch/x86/include/uapi/asm/vmx.h
+arch/powerpc/include/uapi/asm/kvm.h
+arch/s390/include/uapi/asm/kvm.h
+arch/s390/include/uapi/asm/kvm_perf.h
+arch/s390/include/uapi/asm/ptrace.h
+arch/s390/include/uapi/asm/sie.h
+arch/arm/include/uapi/asm/kvm.h
+arch/arm64/include/uapi/asm/kvm.h
+arch/arm64/include/uapi/asm/unistd.h
+arch/alpha/include/uapi/asm/errno.h
+arch/mips/include/asm/errno.h
+arch/mips/include/uapi/asm/errno.h
+arch/parisc/include/uapi/asm/errno.h
+arch/powerpc/include/uapi/asm/errno.h
+arch/sparc/include/uapi/asm/errno.h
+arch/x86/include/uapi/asm/errno.h
+include/asm-generic/bitops/arch_hweight.h
+include/asm-generic/bitops/const_hweight.h
+include/asm-generic/bitops/__fls.h
+include/asm-generic/bitops/fls.h
+include/asm-generic/bitops/fls64.h
+include/linux/coresight-pmu.h
+include/uapi/asm-generic/errno.h
+include/uapi/asm-generic/errno-base.h
+include/uapi/asm-generic/ioctls.h
+include/uapi/asm-generic/mman-common.h
+include/uapi/asm-generic/unistd.h
+'
+
+SYNC_CHECK_FILES='
+arch/x86/include/asm/inat.h
+arch/x86/include/asm/insn.h
+arch/x86/lib/inat.c
+arch/x86/lib/insn.c
+'
+
+# These copies are under tools/perf/trace/beauty/ as they are not used to in
+# building object files only by scripts in tools/perf/trace/beauty/ to generate
+# tables that then gets included in .c files for things like id->string syscall
+# tables (and the reverse lookup as well: string -> id)
+
+BEAUTY_FILES='
+include/linux/socket.h
+'
+
+check_2 () {
+  file1=$1
+  file2=$2
+
+  shift
+  shift
+
+  cmd="diff $* $file1 $file2 > /dev/null"
+
+  test -f $file2 && {
+    eval $cmd || {
+      echo "Warning: Kernel ABI header at '$file1' differs from latest version at '$file2'" >&2
+      echo diff -u $file1 $file2
+    }
+  }
+}
+
+check () {
+  file=$1
+
+  shift
+
+  check_2 tools/$file $file $*
+}
+
+beauty_check () {
+  file=$1
+
+  shift
+
+  check_2 tools/perf/trace/beauty/$file $file $*
+}
+
+# Check if we have the kernel headers (tools/perf/../../include), else
+# we're probably on a detached tarball, so no point in trying to check
+# differences.
+test -d ../../include || exit 0
+
+cd ../..
+
+# simple diff check
+for i in $FILES; do
+  check $i -B
+done
+
+for i in $SYNC_CHECK_FILES; do
+  check $i '-I "^.*\/\*.*__ignore_sync_check__.*\*\/.*$"'
+done
+
+# diff with extra ignore lines
+check arch/x86/lib/memcpy_64.S        '-I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>" -I"^SYM_FUNC_START\(_LOCAL\)*(memcpy_\(erms\|orig\))"'
+check arch/x86/lib/memset_64.S        '-I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>" -I"^SYM_FUNC_START\(_LOCAL\)*(memset_\(erms\|orig\))"'
+check include/uapi/asm-generic/mman.h '-I "^#include <\(uapi/\)*asm-generic/mman-common\(-tools\)*.h>"'
+check include/uapi/linux/mman.h       '-I "^#include <\(uapi/\)*asm/mman.h>"'
+check include/linux/build_bug.h       '-I "^#\(ifndef\|endif\)\( \/\/\)* static_assert$"'
+check include/linux/ctype.h	      '-I "isdigit("'
+check lib/ctype.c		      '-I "^EXPORT_SYMBOL" -I "^#include <linux/export.h>" -B'
+
+# diff non-symmetric files
+check_2 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl
+
+for i in $BEAUTY_FILES; do
+  beauty_check $i -B
+done
+
+# check duplicated library files
+check_2 tools/perf/util/hashmap.h tools/lib/bpf/hashmap.h
+check_2 tools/perf/util/hashmap.c tools/lib/bpf/hashmap.c
+
+cd tools/perf