include/linux/printk.h: add pr_<level>_once macros

- Move printk_once definitions and add an #ifdef CONFIG_PRINTK

- Add pr_<level>_once so printks can use pr_fmt

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 44 insertions, 15 deletions

diff --git a/include/linux/printk.h b/include/linux/printk.h
index 4788c2887e65..6442156707c9 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -112,18 +112,6 @@ extern int printk_delay_msec;
 extern int dmesg_restrict;
 extern int kptr_restrict;
 
-/*
- * Print a one-time message (analogous to WARN_ONCE() et al):
- */
-#define printk_once(x...) ({                    \
-        static bool __print_once;               \
-                                                \
-        if (!__print_once) {                    \
-                __print_once = true;            \
-                printk(x);                      \
-        }                                       \
-})
-
 void log_buf_kexec_setup(void);
 #else
 static inline __attribute__ ((format (printf, 1, 0)))
@@ -146,9 +134,6 @@ static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies,
         return false;
 }
 
-/* No effect, but we still get type checking even in the !PRINTK case: */
-#define printk_once(fmt, ...) no_printk(fmt, ##__VA_ARGS__)
-
 static inline void log_buf_kexec_setup(void)
 {
 }
@@ -215,6 +200,50 @@ extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
 #endif
 
 /*
+ * Print a one-time message (analogous to WARN_ONCE() et al):
+ */
+
+#ifdef CONFIG_PRINTK
+#define printk_once(fmt, ...)                   \
+({                                              \
+        static bool __print_once;               \
+                                                \
+        if (!__print_once) {                    \
+                __print_once = true;            \
+                printk(fmt, ##__VA_ARGS__);     \
+        }                                       \
+})
+#else
+#define printk_once(fmt, ...)                   \
+        no_printk(fmt, ##__VA_ARGS__)
+#endif
+
+#define pr_emerg_once(fmt, ...)                                 \
+        printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_alert_once(fmt, ...)                                 \
+        printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_crit_once(fmt, ...)                                  \
+        printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_err_once(fmt, ...)                                   \
+        printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_warn_once(fmt, ...)                                  \
+        printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_notice_once(fmt, ...)                                \
+        printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_info_once(fmt, ...)                                  \
+        printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_cont_once(fmt, ...)                                  \
+        printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__)
+/* If you are writing a driver, please use dev_dbg instead */
+#if defined(DEBUG)
+#define pr_debug_once(fmt, ...)                                 \
+        printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
+#else
+#define pr_debug_once(fmt, ...)                                 \
+        no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
+#endif
+
+/*
  * ratelimited messages with local ratelimit_state,
  * no local ratelimit_state used in the !PRINTK case
  */