Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 72 insertions, 0 deletions

diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h
new file mode 100644
index 000000000..429f43a8a
--- /dev/null
+++ b/arch/s390/include/asm/bug.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_S390_BUG_H
+#define _ASM_S390_BUG_H
+
+#include <linux/kernel.h>
+
+#ifdef CONFIG_BUG
+
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+
+#define __EMIT_BUG(x) do {					\
+	asm volatile(						\
+		"0:	j	0b+2\n"				\
+		"1:\n"						\
+		".section .rodata.str,\"aMS\",@progbits,1\n"	\
+		"2:	.asciz	\""__FILE__"\"\n"		\
+		".previous\n"					\
+		".section __bug_table,\"aw\"\n"			\
+		"3:	.long	1b-3b,2b-3b\n"			\
+		"	.short	%0,%1\n"			\
+		"	.org	3b+%2\n"			\
+		".previous\n"					\
+		: : "i" (__LINE__),				\
+		    "i" (x),					\
+		    "i" (sizeof(struct bug_entry)));		\
+} while (0)
+
+#else /* CONFIG_DEBUG_BUGVERBOSE */
+
+#define __EMIT_BUG(x) do {				\
+	asm volatile(					\
+		"0:	j	0b+2\n"			\
+		"1:\n"					\
+		".section __bug_table,\"aw\"\n"		\
+		"2:	.long	1b-2b\n"		\
+		"	.short	%0\n"			\
+		"	.org	2b+%1\n"		\
+		".previous\n"				\
+		: : "i" (x),				\
+		    "i" (sizeof(struct bug_entry)));	\
+} while (0)
+
+#endif /* CONFIG_DEBUG_BUGVERBOSE */
+
+#define BUG() do {					\
+	__EMIT_BUG(0);					\
+	unreachable();					\
+} while (0)
+
+#define __WARN_FLAGS(flags) do {			\
+	__EMIT_BUG(BUGFLAG_WARNING|(flags));		\
+} while (0)
+
+#define WARN_ON(x) ({					\
+	int __ret_warn_on = !!(x);			\
+	if (__builtin_constant_p(__ret_warn_on)) {	\
+		if (__ret_warn_on)			\
+			__WARN();			\
+	} else {					\
+		if (unlikely(__ret_warn_on))		\
+			__WARN();			\
+	}						\
+	unlikely(__ret_warn_on);			\
+})
+
+#define HAVE_ARCH_BUG
+#define HAVE_ARCH_WARN_ON
+#endif /* CONFIG_BUG */
+
+#include <asm-generic/bug.h>
+
+#endif /* _ASM_S390_BUG_H */