From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/include/linux/kmsg_dump.h | 64 +++++++++++++++-----------------
1 files changed, 30 insertions(+), 34 deletions(-)
diff --git a/kernel/include/linux/kmsg_dump.h b/kernel/include/linux/kmsg_dump.h
index 2e7a1e0..8667393 100644
--- a/kernel/include/linux/kmsg_dump.h
+++ b/kernel/include/linux/kmsg_dump.h
@@ -25,9 +25,20 @@
KMSG_DUMP_PANIC,
KMSG_DUMP_OOPS,
KMSG_DUMP_EMERG,
- KMSG_DUMP_RESTART,
- KMSG_DUMP_HALT,
- KMSG_DUMP_POWEROFF,
+ KMSG_DUMP_SHUTDOWN,
+ KMSG_DUMP_MAX
+};
+
+/**
+ * struct kmsg_dumper_iter - iterator for kernel crash message dumper
+ * @active: Flag that specifies if this is currently dumping
+ * @cur_seq: Points to the oldest message to dump (private)
+ * @next_seq: Points after the newest message to dump (private)
+ */
+struct kmsg_dumper_iter {
+ bool active;
+ u64 cur_seq;
+ u64 next_seq;
};
/**
@@ -40,66 +51,46 @@
*/
struct kmsg_dumper {
struct list_head list;
- void (*dump)(struct kmsg_dumper *dumper, enum kmsg_dump_reason reason);
+ void (*dump)(struct kmsg_dumper *dumper, enum kmsg_dump_reason reason,
+ struct kmsg_dumper_iter *iter);
enum kmsg_dump_reason max_reason;
- bool active;
bool registered;
-
- /* private state of the kmsg iterator */
- u32 cur_idx;
- u32 next_idx;
- u64 cur_seq;
- u64 next_seq;
};
#ifdef CONFIG_PRINTK
void kmsg_dump(enum kmsg_dump_reason reason);
-bool kmsg_dump_get_line_nolock(struct kmsg_dumper *dumper, bool syslog,
- char *line, size_t size, size_t *len);
-
-bool kmsg_dump_get_line(struct kmsg_dumper *dumper, bool syslog,
+bool kmsg_dump_get_line(struct kmsg_dumper_iter *iter, bool syslog,
char *line, size_t size, size_t *len);
-bool kmsg_dump_get_buffer(struct kmsg_dumper *dumper, bool syslog,
- char *buf, size_t size, size_t *len);
+bool kmsg_dump_get_buffer(struct kmsg_dumper_iter *iter, bool syslog,
+ char *buf, size_t size, size_t *len_out);
-void kmsg_dump_rewind_nolock(struct kmsg_dumper *dumper);
-
-void kmsg_dump_rewind(struct kmsg_dumper *dumper);
+void kmsg_dump_rewind(struct kmsg_dumper_iter *iter);
int kmsg_dump_register(struct kmsg_dumper *dumper);
int kmsg_dump_unregister(struct kmsg_dumper *dumper);
+
+const char *kmsg_dump_reason_str(enum kmsg_dump_reason reason);
#else
static inline void kmsg_dump(enum kmsg_dump_reason reason)
{
}
-static inline bool kmsg_dump_get_line_nolock(struct kmsg_dumper *dumper,
- bool syslog, const char *line,
- size_t size, size_t *len)
-{
- return false;
-}
-
-static inline bool kmsg_dump_get_line(struct kmsg_dumper *dumper, bool syslog,
+static inline bool kmsg_dump_get_line(struct kmsg_dumper_iter *iter, bool syslog,
const char *line, size_t size, size_t *len)
{
return false;
}
-static inline bool kmsg_dump_get_buffer(struct kmsg_dumper *dumper, bool syslog,
+static inline bool kmsg_dump_get_buffer(struct kmsg_dumper_iter *iter, bool syslog,
char *buf, size_t size, size_t *len)
{
return false;
}
-static inline void kmsg_dump_rewind_nolock(struct kmsg_dumper *dumper)
-{
-}
-
-static inline void kmsg_dump_rewind(struct kmsg_dumper *dumper)
+static inline void kmsg_dump_rewind(struct kmsg_dumper_iter *iter)
{
}
@@ -112,6 +103,11 @@
{
return -EINVAL;
}
+
+static inline const char *kmsg_dump_reason_str(enum kmsg_dump_reason reason)
+{
+ return "Disabled";
+}
#endif
#endif /* _LINUX_KMSG_DUMP_H */
--
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