printk: Add sleep time offset to all timestamps

Instrumenting print_time is insufficient for adjusting the timestamp of
logged messages. Add the sleep time offset to true message timestamps as
well to address this issue.

Test: dmesg shows true boot time after several suspend/resume cycles
Signed-off-by: Danny Lin <danny@kdrag0n.dev>
Signed-off-by: Fiqri Ardyansyah <fiqri15072019@gmail.com>
Signed-off-by: Forenche <prahul2003@gmail.com>
Signed-off-by: Cyber Knight <cyberknight755@gmail.com>

Author: kdrag0n

kernel/printk/printk.c

@@ -629,7 +629,7 @@ static int log_store(int facility, int level,
 	if (ts_nsec > 0)
 		msg->ts_nsec = ts_nsec;
 	else
-		msg->ts_nsec = local_clock();
+		msg->ts_nsec = local_clock() + get_total_sleep_time_nsec();
 	memset(log_dict(msg) + dict_len, 0, pad_len);
 	msg->len = size;
 
@@ -1793,7 +1793,7 @@ static bool cont_add(int facility, int level, enum log_flags flags, const char *
 		cont.facility = facility;
 		cont.level = level;
 		cont.owner = current;
-		cont.ts_nsec = local_clock();
+		cont.ts_nsec = local_clock() + get_total_sleep_time_nsec();
 		cont.flags = flags;
 	}