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| author | Alexander Stein <alexander.stein@systec-electronic.com> | 2016-03-17 11:00:20 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-04-08 13:33:18 +0200 |
| commit | 97cef9084335959ad2e9d088d6d8adadf6c6e861 (patch) | |
| tree | 7e275a38a177c9e9e2bc4885886337371792c631 | |
| parent | eb36388c154a334322298f58328a6dfc7bf5567c (diff) | |
| download | barebox-97cef9084335959ad2e9d088d6d8adadf6c6e861.tar.gz barebox-97cef9084335959ad2e9d088d6d8adadf6c6e861.tar.xz | |
printk: Add printk_once
This is needed by upcoming list_sort implementation.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | include/printk.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/printk.h b/include/printk.h index 822f64c61f..4b76ca10b2 100644 --- a/include/printk.h +++ b/include/printk.h @@ -92,6 +92,16 @@ static inline int pr_print(int level, const char *format, ...) #define debug(fmt, arg...) __pr_printk(7, pr_fmt(fmt), ##arg) #define pr_vdebug(fmt, arg...) __pr_printk(8, pr_fmt(fmt), ##arg) +#define printk_once(fmt, ...) \ +({ \ + static bool __print_once ; \ + \ + if (!__print_once) { \ + __print_once = true; \ + printk(fmt, ##__VA_ARGS__); \ + } \ +}) + struct log_entry { struct list_head list; char *msg; |