Messages in this thread Patch in this message | | | From | Joe Perches <> | Subject | [PATCH 1/5] printk: Add eliminated_printk macro | Date | Sun, 17 Jun 2012 19:25:08 -0700 |
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no_printk keeps gcc side-effects. Add a mechanism to eliminate the side-effects.
Signed-off-by: Joe Perches <joe@perches.com> --- include/linux/printk.h | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/include/linux/printk.h b/include/linux/printk.h index 1bec2f7..84aa910 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -88,6 +88,16 @@ int no_printk(const char *fmt, ...) return 0; } +/* + * Dummy printk for disabled printks maintaining + * gcc's format checking and eliminating side-effects + */ +#define eliminated_printk(fmt, ...) \ +do { \ + if (0) \ + printk(fmt, ##__VA_ARGS__); \ +} while (0) + extern asmlinkage __printf(1, 2) void early_printk(const char *fmt, ...); -- 1.7.8.111.gad25c.dirty
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