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Add a dummy printk function for the maintenance of unused printks

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Add a dummy printk function for the maintenance of unused printks through gcc
format checking, and also so that side-effect checking is maintained too.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Howells 2010-08-12 16:54:57 +01:00 • committed by Linus Torvalds
parent 1490cf5f0c
commit 12fdff3fc2
8 changed files with 22 additions and 54 deletions
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7
include/linux/kernel.h
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@ -306,6 +306,13 @@ static inline void log_buf_kexec_setup(void)
}
#endif
/*
* Dummy printk for disabled debugging statements to use whilst maintaining
* gcc's format and side-effect checking.
*/
static inline __attribute__ ((format (printf, 1, 2)))
int no_printk(const char *s, ...) { return 0; }
extern int printk_needs_cpu(int cpu);
extern void printk_tick(void);