[PATCH 1/3] clocksource: Skip to check the override clocksource if override name is empty

From: Baolin Wang
Date: Wed Jan 17 2018 - 01:03:25 EST


Some platforms will not set the override clocksource name to select, so we
can skip to check the override clocksource when selecting one clocksource.

Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxx>
---
kernel/time/clocksource.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 65f9e3f..c5fdcb1 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -594,6 +594,9 @@ static void __clocksource_select(bool skipcur)
if (!best)
return;

+ if (!strlen(override_name))
+ goto found;
+
/* Check for the override clocksource. */
list_for_each_entry(cs, &clocksource_list, list) {
if (skipcur && cs == curr_clocksource)
@@ -625,6 +628,7 @@ static void __clocksource_select(bool skipcur)
break;
}

+found:
if (curr_clocksource != best && !timekeeping_notify(best)) {
pr_info("Switched to clocksource %s\n", best->name);
curr_clocksource = best;
--
1.7.9.5