312x

[firefly-linux-kernel-4.4.55.git] / kernel / printk.c

diff --git a/kernel/printk.c b/kernel/printk.c
index cd0ee46eb894f3ade1c2f6fdf3752e6bd8e0c551..cbf71b406e33627b7e5c9e5941caf0b97f7bef1d 100644 (file)
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -51,6 +51,10 @@
 #define CREATE_TRACE_POINTS
 #include <trace/events/printk.h>
 
+#ifdef CONFIG_EARLY_PRINTK_DIRECT
+extern void printascii(char *);
+#endif
+
 /* printk's without a loglevel use this.. */
 #define DEFAULT_MESSAGE_LOGLEVEL CONFIG_DEFAULT_MESSAGE_LOGLEVEL
 
@@ -302,6 +306,12 @@ static u32 log_next(u32 idx)
        return idx + msg->len;
 }
 
+#ifdef CONFIG_RK_LAST_LOG
+extern void rk_last_log_text(char *text, size_t size);
+static char rk_text[1024];
+static size_t msg_print_text(const struct log *msg, enum log_flags prev,
+                            bool syslog, char *buf, size_t size);
+#endif
 /* insert record into the buffer, discard old ones, update heads */
 static void log_store(int facility, int level,
                      enum log_flags flags, u64 ts_nsec,
@@ -358,6 +368,10 @@ static void log_store(int facility, int level,
        memset(log_dict(msg) + dict_len, 0, pad_len);
        msg->len = sizeof(struct log) + text_len + dict_len + pad_len;
 
+#ifdef CONFIG_RK_LAST_LOG
+       size = msg_print_text(msg, msg->flags, true, rk_text, sizeof(rk_text));
+       rk_last_log_text(rk_text, size);
+#endif
        /* insert message */
        log_next_idx += msg->len;
        log_next_seq++;
@@ -1369,9 +1383,9 @@ static int console_trylock_for_printk(unsigned int cpu)
                }
        }
        logbuf_cpu = UINT_MAX;
+       raw_spin_unlock(&logbuf_lock);
        if (wake)
                up(&console_sem);
-       raw_spin_unlock(&logbuf_lock);
        return retval;
 }
 
@@ -1703,6 +1717,12 @@ asmlinkage int printk(const char *fmt, ...)
 }
 EXPORT_SYMBOL(printk);
 
+#if defined(CONFIG_RK_DEBUG_UART) && (CONFIG_RK_DEBUG_UART >= 0)
+void console_disable_suspend(void)
+{
+       console_suspended = 0;
+}
+#endif
 #else /* CONFIG_PRINTK */
 
 #define LOG_LINE_MAX           0