diff options
| author | Ingo Molnar <mingo@kernel.org> | 2014-02-02 09:45:39 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-02-02 09:45:39 +0100 |
| commit | eaa4e4fcf1b5c60e656d93242f7fe422173f25b2 (patch) | |
| tree | c05d5d6ca3f625d72a9d136b4c485d3dc9472089 /include/linux/printk.h | |
| parent | be1e4e760d940c14d119bffef5eb007dfdf29046 (diff) | |
| parent | 5cb480f6b488128140c940abff3c36f524a334a8 (diff) | |
Merge branch 'linus' into sched/core, to resolve conflicts
Conflicts:
kernel/sysctl.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/printk.h')
| -rw-r--r-- | include/linux/printk.h | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/include/linux/printk.h b/include/linux/printk.h index 694925837a16..fa47e2708c01 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -5,6 +5,7 @@ #include <linux/init.h> #include <linux/kern_levels.h> #include <linux/linkage.h> +#include <linux/cache.h> extern const char linux_banner[]; extern const char linux_proc_banner[]; @@ -88,6 +89,13 @@ struct va_format { #define HW_ERR "[Hardware Error]: " /* + * DEPRECATED + * Add this to a message whenever you want to warn user space about the use + * of a deprecated aspect of an API so they can stop using it + */ +#define DEPRECATED "[Deprecated]: " + +/* * Dummy printk for disabled debugging statements to use whilst maintaining * gcc's format and side-effect checking. */ @@ -253,17 +261,17 @@ extern asmlinkage void dump_stack(void) __cold; */ #ifdef CONFIG_PRINTK -#define printk_once(fmt, ...) \ -({ \ - static bool __print_once; \ - \ - if (!__print_once) { \ - __print_once = true; \ - printk(fmt, ##__VA_ARGS__); \ - } \ +#define printk_once(fmt, ...) \ +({ \ + static bool __print_once __read_mostly; \ + \ + if (!__print_once) { \ + __print_once = true; \ + printk(fmt, ##__VA_ARGS__); \ + } \ }) #else -#define printk_once(fmt, ...) \ +#define printk_once(fmt, ...) \ no_printk(fmt, ##__VA_ARGS__) #endif |