Message ID | 20201204123433.01282063e81f.I6cdf9966c9d253628195b50d800c8a688f829b46@changeid |
---|---|
State | Accepted |
Headers | show |
Series | um: time-travel: avoid multiple identical propagations | expand |
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c index 5ac084deac7e..2c1c04f4ef27 100644 --- a/arch/um/kernel/time.c +++ b/arch/um/kernel/time.c @@ -198,7 +198,13 @@ static void time_travel_ext_update_request(unsigned long long time) void __time_travel_propagate_time(void) { + static unsigned long long last_propagated; + + if (last_propagated == time_travel_time) + return; + time_travel_ext_req(UM_TIMETRAVEL_UPDATE, time_travel_time); + last_propagated = time_travel_time; } EXPORT_SYMBOL_GPL(__time_travel_propagate_time);