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um: Add os_warn() for pre-boot warning/error messages

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Add os_warn() for printing out pre-boot warning/error
messages in stderr. The messages via os_warn() are not
suppressed by quiet option.

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 02:18:22 +09:00 committed by Richard Weinberger
parent d3878bb800
commit 721ccae88d
2 changed files with 11 additions and 0 deletions
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2
arch/um/include/shared/os.h
View File

@ -244,6 +244,8 @@ 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)));
extern void os_warn(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
/* time.c */
extern void os_idle_sleep(unsigned long long nsecs);

9
arch/um/os-Linux/util.c
View File

@ -177,3 +177,12 @@ void os_info(const char *fmt, ...)
vfprintf(stderr, fmt, list);
va_end(list);
}
void os_warn(const char *fmt, ...)
{
va_list list;
va_start(list, fmt);
vfprintf(stderr, fmt, list);
va_end(list);
}