perf tools: Separate the checking of headers only used to build beaut…

…ification tables

Some headers are not used in building the tools directly, but instead to
generate tables that then gets source code included to do id->string and
string->id lookups for things like syscall flags and commands.

We were adding it directly to tools/include/ and this sometimes gets in
the way of building using system headers, lets untangle this a bit.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/check-headers.sh

@@ -75,6 +75,15 @@ include/uapi/asm-generic/mman-common.h
 include/uapi/asm-generic/unistd.h
 '
 
+# 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=$2
@@ -100,6 +109,14 @@ check () {
   check_2 tools/$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.
@@ -128,8 +145,9 @@ check arch/x86/lib/insn.c             '-I "^#include [\"<]\(../include/\)*asm/in
 # diff non-symmetric files
 check_2 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl
 
-# These will require a beauty_check when we get some more like that
-check_2 tools/perf/trace/beauty/include/linux/socket.h include/linux/socket.h
+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