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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.

[[email protected]: arch/mips/kernel/early_printk.c needs kernel.h for va_list]
[[email protected]: sh4: make the bios early console support depend on EARLY_PRINTK]
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Paul Gortmaker <[email protected]>
Cc: Russell King <[email protected]>
Acked-by: Mike Frysinger <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Chris Metcalf <[email protected]>
Cc: Richard Weinberger <[email protected]>
Reviewed-by: Ingo Molnar <[email protected]>
Tested-by: Paul Gortmaker <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Thomas Gleixner 2013-04-29 16:17:18 -07:00 • committed by Linus Torvalds
commit d0380e6c3c
13 changed files with 63 additions and 109 deletions
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27
arch/tile/kernel/early_printk.c
View file

@ -17,6 +17,7 @@
#include <linux/init.h>
#include <linux/string.h>
#include <linux/irqflags.h>
#include <linux/printk.h>
#include <asm/setup.h>
#include <hv/hypervisor.h>
@ -33,25 +34,8 @@ static struct console early_hv_console = {
};
/* Direct interface for emergencies */
static struct console *early_console = &early_hv_console;
static int early_console_initialized;
static int early_console_complete;
static void early_vprintk(const char *fmt, va_list ap)
{
char buf[512];
int n = vscnprintf(buf, sizeof(buf), fmt, ap);
early_console->write(early_console, buf, n);
}
void early_printk(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
early_vprintk(fmt, ap);
va_end(ap);
}
void early_panic(const char *fmt, ...)
{
va_list ap;
@ -69,14 +53,13 @@ static int __initdata keep_early;
static int __init setup_early_printk(char *str)
{
if (early_console_initialized)
if (early_console)
return 1;
if (str != NULL && strncmp(str, "keep", 4) == 0)
keep_early = 1;
early_console = &early_hv_console;
early_console_initialized = 1;
register_console(early_console);
return 0;
@ -85,12 +68,12 @@ static int __init setup_early_printk(char *str)
void __init disable_early_printk(void)
{
early_console_complete = 1;
if (!early_console_initialized || !early_console)
if (!early_console)
return;
if (!keep_early) {
early_printk("disabling early console\n");
unregister_console(early_console);
early_console_initialized = 0;
early_console = NULL;
} else {
early_printk("keeping early console\n");
}
@ -98,7 +81,7 @@ void __init disable_early_printk(void)
void warn_early_printk(void)
{
if (early_console_complete || early_console_initialized)
if (early_console_complete || early_console)
return;
early_printk("\
Machine shutting down before console output is fully initialized.\n\