Adding upstream version 6.1.76.upstream/6.1.76upstream

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

1 files changed, 94 insertions, 0 deletions

diff --git a/include/linux/bug.h b/include/linux/bug.h
new file mode 100644
index 000000000..348acf255
--- /dev/null
+++ b/include/linux/bug.h
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_BUG_H
+#define _LINUX_BUG_H
+
+#include <asm/bug.h>
+#include <linux/compiler.h>
+#include <linux/build_bug.h>
+
+enum bug_trap_type {
+	BUG_TRAP_TYPE_NONE = 0,
+	BUG_TRAP_TYPE_WARN = 1,
+	BUG_TRAP_TYPE_BUG = 2,
+};
+
+struct pt_regs;
+
+#ifdef __CHECKER__
+#define MAYBE_BUILD_BUG_ON(cond) (0)
+#else /* __CHECKER__ */
+
+#define MAYBE_BUILD_BUG_ON(cond)			\
+	do {						\
+		if (__builtin_constant_p((cond)))       \
+			BUILD_BUG_ON(cond);             \
+		else                                    \
+			BUG_ON(cond);                   \
+	} while (0)
+
+#endif	/* __CHECKER__ */
+
+#ifdef CONFIG_GENERIC_BUG
+#include <asm-generic/bug.h>
+
+static inline int is_warning_bug(const struct bug_entry *bug)
+{
+	return bug->flags & BUGFLAG_WARNING;
+}
+
+void bug_get_file_line(struct bug_entry *bug, const char **file,
+		       unsigned int *line);
+
+struct bug_entry *find_bug(unsigned long bugaddr);
+
+enum bug_trap_type report_bug(unsigned long bug_addr, struct pt_regs *regs);
+
+/* These are defined by the architecture */
+int is_valid_bugaddr(unsigned long addr);
+
+void generic_bug_clear_once(void);
+
+#else	/* !CONFIG_GENERIC_BUG */
+
+static inline void *find_bug(unsigned long bugaddr)
+{
+	return NULL;
+}
+
+static inline enum bug_trap_type report_bug(unsigned long bug_addr,
+					    struct pt_regs *regs)
+{
+	return BUG_TRAP_TYPE_BUG;
+}
+
+struct bug_entry;
+static inline void bug_get_file_line(struct bug_entry *bug, const char **file,
+				     unsigned int *line)
+{
+	*file = NULL;
+	*line = 0;
+}
+
+static inline void generic_bug_clear_once(void) {}
+
+#endif	/* CONFIG_GENERIC_BUG */
+
+/*
+ * Since detected data corruption should stop operation on the affected
+ * structures. Return value must be checked and sanely acted on by caller.
+ */
+static inline __must_check bool check_data_corruption(bool v) { return v; }
+#define CHECK_DATA_CORRUPTION(condition, fmt, ...)			 \
+	check_data_corruption(({					 \
+		bool corruption = unlikely(condition);			 \
+		if (corruption) {					 \
+			if (IS_ENABLED(CONFIG_BUG_ON_DATA_CORRUPTION)) { \
+				pr_err(fmt, ##__VA_ARGS__);		 \
+				BUG();					 \
+			} else						 \
+				WARN(1, fmt, ##__VA_ARGS__);		 \
+		}							 \
+		corruption;						 \
+	}))
+
+#endif	/* _LINUX_BUG_H */