linux/tools/perf/check-headers.sh
Arnaldo Carvalho de Melo d7e05ceaa9 perf tools: Do not check ABI headers in a detached tarball build
When we use one of:

  [acme@jouet linux]$ make help | grep perf
    perf-tar-src-pkg    - Build perf-4.14.0-rc3.tar source tarball
    perf-targz-src-pkg  - Build perf-4.14.0-rc3.tar.gz source tarball
    perf-tarbz2-src-pkg - Build perf-4.14.0-rc3.tar.bz2 source tarball
    perf-tarxz-src-pkg  - Build perf-4.14.0-rc3.tar.xz source tarball
  [acme@jouet linux]$

I.e. when we create a detached tarball to build perf outside outside the
enveloping kernel sources (from a kernel tarball or a checked out
linux.git directory) we by definition can't check for differences among
the tools/{include,arch}, etc files we originally copied from the
kernel, so bail out in that case, to avoid warnings when doing the
detached builds.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-vbrga0mhplv7niwxr3ghjyxv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-10-23 16:30:50 -03:00

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#!/bin/sh
HEADERS='
include/uapi/drm/drm.h
include/uapi/drm/i915_drm.h
include/uapi/linux/fcntl.h
include/uapi/linux/kvm.h
include/uapi/linux/perf_event.h
include/uapi/linux/sched.h
include/uapi/linux/stat.h
include/uapi/linux/vhost.h
include/uapi/sound/asound.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/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/sie.h
arch/arm/include/uapi/asm/kvm.h
arch/arm64/include/uapi/asm/kvm.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/ioctls.h
include/uapi/asm-generic/mman-common.h
'
check () {
file=$1
opts="--ignore-blank-lines --ignore-space-change"
shift
while [ -n "$*" ]; do
opts="$opts \"$1\""
shift
done
cmd="diff $opts ../$file ../../$file > /dev/null"
test -f ../../$file &&
eval $cmd || echo "Warning: Kernel ABI header at 'tools/$file' differs from latest version at '$file'" >&2
}
# 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
# 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>"