initial import
[patches.git] / printk-add-interfaces-for-external-access-to-the-log-buffer-dont-use-ring-buffer.patch
1 Key off of the log buffer rather than the kernel ring buffer as the
2 latter is constantly cleared by userspace daemons. Also, make sure
3 we index into the buffer properly as pointed out by Tim Bird.
4
5 Signed-off-by: Mike Frysinger <vapier@gentoo.org>
6 ---
7 --- a/kernel/printk.c
8 +++ b/kernel/printk.c
9 @@ -168,7 +168,7 @@
10 */
11 int log_buf_get_len(void)
12 {
13 - return log_end - log_start;
14 + return logged_chars;
15 }
16
17 /*
18 @@ -191,10 +191,9 @@
19 if (len > max)
20 len = max;
21 ret = len;
22 - while (len-- > 0) {
23 - *dest = LOG_BUF(idx++);
24 - ++dest;
25 - }
26 + idx += (log_end - max);
27 + while (len-- > 0)
28 + dest[len] = LOG_BUF(idx + len);
29 }
30
31 if (took_lock)