[PATCH] clocksource: Add CPU info to clocksource watchdog reporting

From: Seiichi Ikarashi
Date: Thu Sep 10 2015 - 05:17:16 EST


The clocksource watchdog reporting was improved by 0b046b217ad4c6.
I want to add the info of CPU where the watchdog detects a deviation
because it is necessary to identify the trouble spot if the clocksource is TSC.

Signed-off-by: Seiichi Ikarashi <s.ikarashi@xxxxxxxxxxxxxx>

---
kernel/time/clocksource.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 174c594..db853e3 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -218,8 +218,8 @@ static void clocksource_watchdog(unsigned long data)

/* Check the deviation from the watchdog clocksource. */
if ((abs(cs_nsec - wd_nsec) > WATCHDOG_THRESHOLD)) {
- pr_warn("timekeeping watchdog: Marking clocksource '%s' as unstable because the skew is too large:\n",
- cs->name);
+ pr_warn("timekeeping watchdog on CPU%d: Marking clocksource '%s' as unstable because the skew is too large:\n",
+ smp_processor_id(), cs->name);
pr_warn(" '%s' wd_now: %llx wd_last: %llx mask: %llx\n",
watchdog->name, wdnow, wdlast, watchdog->mask);
pr_warn(" '%s' cs_now: %llx cs_last: %llx mask: %llx\n",
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/