diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/um/kernel/time.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c index 204ddb141b01..e48282308126 100644 --- a/arch/um/kernel/time.c +++ b/arch/um/kernel/time.c @@ -183,6 +183,14 @@ static void time_travel_ext_update_request(unsigned long long time) time == time_travel_ext_prev_request) return; + /* + * if we're running and are allowed to run past the request + * then we don't need to update it either + */ + if (!time_travel_ext_waiting && time_travel_ext_free_until_valid && + time < time_travel_ext_free_until) + return; + time_travel_ext_prev_request = time; time_travel_ext_prev_request_valid = true; time_travel_ext_req(UM_TIMETRAVEL_REQUEST, time); @@ -223,6 +231,7 @@ static void time_travel_ext_wait(bool idle) }; time_travel_ext_prev_request_valid = false; + time_travel_ext_free_until_valid = false; time_travel_ext_waiting++; time_travel_ext_req(UM_TIMETRAVEL_WAIT, -1); @@ -492,6 +501,7 @@ invalid_number: #define time_travel_start_set 0 #define time_travel_start 0 #define time_travel_time 0 +#define time_travel_ext_waiting 0 static inline void time_travel_update_time(unsigned long long ns, bool retearly) { @@ -637,7 +647,8 @@ static u64 timer_read(struct clocksource *cs) * "what do I do next" and onstack event we use to know when * to return from time_travel_update_time(). */ - if (!irqs_disabled() && !in_interrupt() && !in_softirq()) + if (!irqs_disabled() && !in_interrupt() && !in_softirq() && + !time_travel_ext_waiting) time_travel_update_time(time_travel_time + TIMER_MULTIPLIER, false); |