linux/arch/um/kernel/kmsg_dump.c

45 lines
875 B
C

// SPDX-License-Identifier: GPL-2.0
#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);