1 files changed, 108 insertions, 0 deletions
diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh
new file mode 100755
index 000000000..c72cc73a6
--- /dev/null
+++ b/tools/perf/check-headers.sh
@@ -0,0 +1,108 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+HEADERS='
+include/uapi/drm/drm.h
+include/uapi/drm/i915_drm.h
+include/uapi/linux/fcntl.h
+include/uapi/linux/kcmp.h
+include/uapi/linux/kvm.h
+include/uapi/linux/in.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/vhost.h
+include/uapi/sound/asound.h
+include/linux/bits.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/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
+arch/powerpc/include/uapi/asm/unistd.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
+'
+
+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 $*
+}
+
+# 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 $HEADERS; do
+  check $i -B
+done
+
+# diff with extra ignore lines
+check arch/x86/lib/memcpy_64.S        '-I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>"'
+check arch/x86/lib/memset_64.S        '-I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>"'
+check include/uapi/asm-generic/mman.h '-I "^#include <\(uapi/\)*asm-generic/mman-common.h>"'
+check include/uapi/linux/mman.h       '-I "^#include <\(uapi/\)*asm/mman.h>"'
+
+# diff non-symmetric files
+check_2 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl
+
+cd tools/perf