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early_printk: consolidate random copies of identical code

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The early console implementations are the same all over the place.  Move
the print function to kernel/printk and get rid of the copies.

[akpm@linux-foundation.org: arch/mips/kernel/early_printk.c needs kernel.h for va_list]
[paul.gortmaker@windriver.com: sh4: make the bios early console support depend on EARLY_PRINTK]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Richard Weinberger <richard@nod.at>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Thomas Gleixner
2013-04-29 16:17:18 -07:00
committed by Linus Torvalds
parent 07c65f4d1a
commit d0380e6c3c
13 changed files with 63 additions and 109 deletions
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30
kernel/printk.c
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@@ -49,13 +49,6 @@
#define CREATE_TRACE_POINTS
#include <trace/events/printk.h>
/*
* Architectures can override it:
*/
void asmlinkage __attribute__((weak)) early_printk(const char *fmt, ...)
{
}
/* printk's without a loglevel use this.. */
#define DEFAULT_MESSAGE_LOGLEVEL CONFIG_DEFAULT_MESSAGE_LOGLEVEL
@@ -1723,6 +1716,29 @@ static size_t cont_print_text(char *text, size_t size) { return 0; }
#endif /* CONFIG_PRINTK */
#ifdef CONFIG_EARLY_PRINTK
struct console *early_console;
void early_vprintk(const char *fmt, va_list ap)
{
if (early_console) {
char buf[512];
int n = vscnprintf(buf, sizeof(buf), fmt, ap);
early_console->write(early_console, buf, n);
}
}
asmlinkage void early_printk(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
early_vprintk(fmt, ap);
va_end(ap);
}
#endif
static int __add_preferred_console(char *name, int idx, char *options,
char *brl_options)
{