Contributors: 7
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Thomas Meyer |
140 |
63.64% |
2 |
18.18% |
| John Ogness |
65 |
29.55% |
4 |
36.36% |
| Andy Shevchenko |
10 |
4.55% |
1 |
9.09% |
| Paolo 'Blaisorblade' Giarrusso |
2 |
0.91% |
1 |
9.09% |
| Tiwei Bie |
1 |
0.45% |
1 |
9.09% |
| Greg Kroah-Hartman |
1 |
0.45% |
1 |
9.09% |
| Al Viro |
1 |
0.45% |
1 |
9.09% |
| Total |
220 |
|
11 |
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/kmsg_dump.h>
#include <linux/spinlock.h>
#include <linux/console.h>
#include <linux/string.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 struct kmsg_dump_iter iter;
static DEFINE_SPINLOCK(lock);
static char line[1024];
struct console *con;
unsigned long flags;
size_t len = 0;
int cookie;
/*
* If no consoles are available to output crash information, dump
* the kmsg buffer to stdout.
*/
cookie = console_srcu_read_lock();
for_each_console_srcu(con) {
/*
* The ttynull console and disabled consoles are ignored
* since they cannot output. All other consoles are
* expected to output the crash information.
*/
if (strcmp(con->name, "ttynull") != 0 &&
(console_srcu_read_flags(con) & CON_ENABLED)) {
break;
}
}
console_srcu_read_unlock(cookie);
if (con)
return;
if (!spin_trylock_irqsave(&lock, flags))
return;
kmsg_dump_rewind(&iter);
printf("kmsg_dump:\n");
while (kmsg_dump_get_line(&iter, true, line, sizeof(line), &len)) {
line[len] = '\0';
printf("%s", line);
}
spin_unlock_irqrestore(&lock, flags);
}
static struct kmsg_dumper kmsg_dumper = {
.dump = kmsg_dumper_stdout
};
static int __init kmsg_dumper_stdout_init(void)
{
return kmsg_dump_register(&kmsg_dumper);
}
__uml_postsetup(kmsg_dumper_stdout_init);