[linux-2.6-block.git] / arch / um / kernel / kmsg_dump.c

#include <linux/kmsg_dump.h>
#include <linux/console.h>
#include <shared/init.h>
#include <shared/kern.h>
#include <os.h>

static void kmsg_dumper_stdout(struct kmsg_dumper *dumper,
				enum kmsg_dump_reason reason)
{
	static char line[1024];

	size_t len = 0;
	bool con_available = false;

	/* only dump kmsg when no console is available */
	if (!console_trylock())
		return;

	if (console_drivers != NULL)
		con_available = true;

	console_unlock();

	if (con_available == true)
		return;

	printf("kmsg_dump:\n");
	while (kmsg_dump_get_line(dumper, true, line, sizeof(line), &len)) {
		line[len] = '\0';
		printf("%s", line);
	}
}

static struct kmsg_dumper kmsg_dumper = {
	.dump = kmsg_dumper_stdout
};

int __init kmsg_dumper_stdout_init(void)
{
	return kmsg_dump_register(&kmsg_dumper);
}

__uml_postsetup(kmsg_dumper_stdout_init);
Commit	Line	Data
04a41849 TM	1	#include <linux/kmsg_dump.h>
	2	#include <linux/console.h>
	3	#include <shared/init.h>
	4	#include <shared/kern.h>
	5	#include <os.h>
	6
	7	static void kmsg_dumper_stdout(struct kmsg_dumper *dumper,
	8	enum kmsg_dump_reason reason)
	9	{
	10	static char line[1024];
	11
	12	size_t len = 0;
	13	bool con_available = false;
	14
	15	/* only dump kmsg when no console is available */
	16	if (!console_trylock())
	17	return;
	18
	19	if (console_drivers != NULL)
	20	con_available = true;
	21
	22	console_unlock();
	23
	24	if (con_available == true)
	25	return;
	26
	27	printf("kmsg_dump:\n");
	28	while (kmsg_dump_get_line(dumper, true, line, sizeof(line), &len)) {
	29	line[len] = '\0';
	30	printf("%s", line);
	31	}
	32	}
	33
	34	static struct kmsg_dumper kmsg_dumper = {
	35	.dump = kmsg_dumper_stdout
	36	};
	37
	38	int __init kmsg_dumper_stdout_init(void)
	39	{
	40	return kmsg_dump_register(&kmsg_dumper);
	41	}
	42
	43	__uml_postsetup(kmsg_dumper_stdout_init);