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um: Add os_info() for pre-boot information messages

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Add os_info() for printing out pre-boot information
level messages in stderr. The messages via os_info()
are suppressed by "quiet" kernel command line.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Masami Hiramatsu
2017-05-18 02:16:05 +09:00
committed by Richard Weinberger
parent e03c78ac2d
commit f7887ee110
2 changed files with 27 additions and 0 deletions
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2
arch/um/include/shared/os.h
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@@ -242,6 +242,8 @@ extern void setup_hostinfo(char *buf, int len);
extern void os_dump_core(void) __attribute__ ((noreturn));
extern void um_early_printk(const char *s, unsigned int n);
extern void os_fix_helper_signals(void);
extern void os_info(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
/* time.c */
extern void os_idle_sleep(unsigned long long nsecs);