[tip:perf/urgent] tools arch s390: Do not include header files from the kernel sources

[tip-bot for Arnaldo Carvalho de Melo]

Commit-ID:  10b9baa701d5023897f70a4acb3bf0235da3dc4f
Gitweb:     https://git.kernel.org/tip/10b9baa701d5023897f70a4acb3bf0235da3dc4f
Author:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Tue, 28 Nov 2017 11:08:41 -0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 18 Dec 2017 11:56:13 -0300

tools arch s390: Do not include header files from the kernel sources

Long ago we decided to be verbotten including files in the kernel git
sources from tools/ living source code, to avoid disturbing kernel
development (and perf's and other tools/) when, say, a kernel hacker
adds something, tests everything but tools/ and have tools/ build
broken.

This got broken recently by s/390, fix it by copying
arch/s390/include/uapi/asm/perf_regs.h to tools/arch/s390/include/uapi/asm/,
making this one be used by means of <asm/perf_regs.h> and updating
tools/perf/check_headers.sh to make sure we are notified when the
original changes, so that we can check if anything is needed on the
tooling side.

This would have been caught by the 'tarkpg' test entry in:

$ make -C tools/perf build-test

When run on a s/390 build system or container.

Acked-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Hendrik Brueckner <brueckner@xxxxxxxxxxxxxxxxxx>
Cc: Thomas Richter <tmricht@xxxxxxxxxxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Fixes: f704ef44602f ("s390/perf: add support for perf_regs and libdw")
Link: https://lkml.kernel.org/n/tip-n57139ic0v9uffx8wdqi3d8a@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 {arch => tools/arch}/s390/include/uapi/asm/perf_regs.h | 0
 tools/perf/arch/s390/include/perf_regs.h               | 2 +-
 tools/perf/check-headers.sh                            | 1 +
 3 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/s390/include/uapi/asm/perf_regs.h b/tools/arch/s390/include/uapi/asm/perf_regs.h
similarity index 100%
copy from arch/s390/include/uapi/asm/perf_regs.h
copy to tools/arch/s390/include/uapi/asm/perf_regs.h
diff --git a/tools/perf/arch/s390/include/perf_regs.h b/tools/perf/arch/s390/include/perf_regs.h
index d2df54a..bcfbaed 100644
--- a/tools/perf/arch/s390/include/perf_regs.h
+++ b/tools/perf/arch/s390/include/perf_regs.h
@@ -3,7 +3,7 @@
 
 #include <stdlib.h>
 #include <linux/types.h>
-#include <../../../../arch/s390/include/uapi/asm/perf_regs.h>
+#include <asm/perf_regs.h>
 
 void perf_regs_load(u64 *regs);
 
diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh
index 6db9d80..3e64f10 100755
--- a/tools/perf/check-headers.sh
+++ b/tools/perf/check-headers.sh
@@ -21,6 +21,7 @@ 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