On Wed, 30 Dec 2020 10:28:33 +0100
Borislav Petkov <b...@alien8.de> wrote:

> I still haven't thought about what do to exactly there wrt making
> sync-check.sh happy but the aspect of failing the build is a nice one.

So I think it is possible to introduce a keyword in a comment
for ignoring sync check something like below. This will allow us
a generic pattern matching.

The keyword is just an example, "no-sync-check" etc. is OK.

What would you think about it?

Thank you,

diff --git a/arch/x86/include/asm/inat.h b/arch/x86/include/asm/inat.h
index 4cf2ad521f65..ff3d119610f5 100644
--- a/arch/x86/include/asm/inat.h
+++ b/arch/x86/include/asm/inat.h
@@ -6,7 +6,7 @@
  *
  * Written by Masami Hiramatsu <mhira...@redhat.com>
  */
-#include <asm/inat_types.h>
+#include <asm/inat_types.h>    /* Different from tools */
 
 /*
  * Internal bits. Don't use bitmasks directly, because these bits are
diff --git a/arch/x86/include/asm/insn.h b/arch/x86/include/asm/insn.h
index a8c3d284fa46..dda4fe208659 100644
--- a/arch/x86/include/asm/insn.h
+++ b/arch/x86/include/asm/insn.h
@@ -8,7 +8,7 @@
  */
 
 /* insn_attr_t is defined in inat.h */
-#include <asm/inat.h>
+#include <asm/inat.h>  /* Different from tools */
 
 struct insn_field {
        union {
diff --git a/tools/arch/x86/include/asm/inat.h 
b/tools/arch/x86/include/asm/inat.h
index 877827b7c2c3..1fcfb4efb5f4 100644
--- a/tools/arch/x86/include/asm/inat.h
+++ b/tools/arch/x86/include/asm/inat.h
@@ -6,7 +6,7 @@
  *
  * Written by Masami Hiramatsu <mhira...@redhat.com>
  */
-#include "inat_types.h"
+#include "inat_types.h"        /* Different from kernel */
 
 /*
  * Internal bits. Don't use bitmasks directly, because these bits are
diff --git a/tools/arch/x86/include/asm/insn.h 
b/tools/arch/x86/include/asm/insn.h
index 52c6262e6bfd..702135ddb4fd 100644
--- a/tools/arch/x86/include/asm/insn.h
+++ b/tools/arch/x86/include/asm/insn.h
@@ -8,7 +8,7 @@
  */
 
 /* insn_attr_t is defined in inat.h */
-#include "inat.h"
+#include "inat.h"      /* Different from kernel */
 
 struct insn_field {
        union {
diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh
index dded93a2bc89..b112d68c5513 100755
--- a/tools/perf/check-headers.sh
+++ b/tools/perf/check-headers.sh
@@ -137,8 +137,8 @@ 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'
-check arch/x86/include/asm/inat.h     '-I "^#include 
[\"<]\(asm/\)*inat_types.h[\">]"'
-check arch/x86/include/asm/insn.h     '-I "^#include 
[\"<]\(asm/\)*inat.h[\">]"'
+check arch/x86/include/asm/inat.h     '-I "^.*/\* Different from 
\(tools\|kernel\) \*/"'
+check arch/x86/include/asm/insn.h     '-I "^.*/\* Different from 
\(tools\|kernel\) \*/"'
 check arch/x86/lib/inat.c            '-I "^#include 
[\"<]\(../include/\)*asm/insn.h[\">]"'
 check arch/x86/lib/insn.c             '-I "^#include 
[\"<]\(../include/\)*asm/in\(at\|sn\).h[\">]" -I "^#include 
[\"<]\(../include/\)*asm/emulate_prefix.h[\">]"'
 
-- 
Masami Hiramatsu <mhira...@kernel.org>

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