# \[PATCH v4 01/12\] s390: asm/dwarf.h should only be included in assembly files

- From: Jens Remus \<hidden\>
- Date: 2026-01-27 15:20:03 
- List: linux-trace-kernel
- Page: https://ratatoskr.run/linux-trace-kernel/2026/01/3389308
- Thread: https://ratatoskr.run/linux-trace-kernel/2026/01/3389300/t.md

```text
Align to x86 and add a compile-time check that asm/dwarf.h is only
included in pure assembly files.

Signed-off-by: Jens Remus <redacted>
---

Notes (jremus):
    Changes in RFC v2:
    - Adjust to upstream change of __ASSEMBLY__ to __ASSEMBLER__.

 arch/s390/include/asm/dwarf.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/s390/include/asm/dwarf.h b/arch/s390/include/asm/dwarf.h
index e3ad6798d0cd..df9f467910f7 100644
--- a/arch/s390/include/asm/dwarf.h
+++ b/arch/s390/include/asm/dwarf.h
@@ -2,7 +2,9 @@
 #ifndef _ASM_S390_DWARF_H
 #define _ASM_S390_DWARF_H
 
-#ifdef __ASSEMBLER__
+#ifndef __ASSEMBLER__
+#warning "asm/dwarf.h should be only included in pure assembly files"
+#endif
 
 #define CFI_STARTPROC		.cfi_startproc
 #define CFI_ENDPROC		.cfi_endproc
@@ -33,6 +35,4 @@
 	.cfi_sections .eh_frame, .debug_frame
 #endif
 
-#endif	/* __ASSEMBLER__ */
-
 #endif	/* _ASM_S390_DWARF_H */
-- 
2.51.0

```