Add sleep time into timestamp to reflect the actual time since
sched_clock will be stopped during suspend.
Thanks John Stultz for suggestion to use monotonic_to_bootbased.
Signed-off-by: Neil Zhang <zhan...@marvell.com>
---
kernel/printk/printk.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 4dae9cb..121f792 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -250,6 +250,18 @@ static char __log_buf[__LOG_BUF_LEN] __aligned(LOG_ALIGN);
static char *log_buf = __log_buf;
static u32 log_buf_len = __LOG_BUF_LEN;
+static u64 print_clock(void)
+{
+ struct timespec ts;
+ u64 ts_nsec = local_clock();
+
+ ts = ns_to_timespec(ts_nsec);
+ monotonic_to_bootbased(&ts);
+ ts_nsec = timespec_to_ns(&ts);
+
+ return ts_nsec;
+}
+
/* cpu currently holding logbuf_lock */
static volatile unsigned int logbuf_cpu = UINT_MAX;
@@ -349,7 +361,7 @@ static void log_store(int facility, int level,
if (ts_nsec > 0)
msg->ts_nsec = ts_nsec;
else
- msg->ts_nsec = local_clock();
+ msg->ts_nsec = print_clock();
memset(log_dict(msg) + dict_len, 0, pad_len);
msg->len = sizeof(struct printk_log) + text_len + dict_len + pad_len;
@@ -1440,7 +1452,7 @@ static bool cont_add(int facility, int level, const char
*text, size_t len)
cont.facility = facility;
cont.level = level;
cont.owner = current;
- cont.ts_nsec = local_clock();
+ cont.ts_nsec = print_clock();
cont.flags = 0;
cont.cons = 0;
cont.flushed = false;
--
1.7.9.5
--
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