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-rw-r--r--kernel/printk.c39
1 files changed, 0 insertions, 39 deletions
diff --git a/kernel/printk.c b/kernel/printk.c
index 6341af77eb65..f492f1583d77 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -233,45 +233,6 @@ static inline void boot_delay_msec(void)
233#endif 233#endif
234 234
235/* 235/*
236 * Return the number of unread characters in the log buffer.
237 */
238static int log_buf_get_len(void)
239{
240 return logged_chars;
241}
242
243/*
244 * Copy a range of characters from the log buffer.
245 */
246int log_buf_copy(char *dest, int idx, int len)
247{
248 int ret, max;
249 bool took_lock = false;
250
251 if (!oops_in_progress) {
252 spin_lock_irq(&logbuf_lock);
253 took_lock = true;
254 }
255
256 max = log_buf_get_len();
257 if (idx < 0 || idx >= max) {
258 ret = -1;
259 } else {
260 if (len > max)
261 len = max;
262 ret = len;
263 idx += (log_end - max);
264 while (len-- > 0)
265 dest[len] = LOG_BUF(idx + len);
266 }
267
268 if (took_lock)
269 spin_unlock_irq(&logbuf_lock);
270
271 return ret;
272}
273
274/*
275 * Commands to do_syslog: 236 * Commands to do_syslog:
276 * 237 *
277 * 0 -- Close the log. Currently a NOP. 238 * 0 -- Close the log. Currently a NOP.