diff options
Diffstat (limited to 'kernel/time/hrtimer.c')
| -rw-r--r-- | kernel/time/hrtimer.c | 51 |
1 files changed, 31 insertions, 20 deletions
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index 30899a8cc52c..88aa062b8a55 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -59,6 +59,7 @@ #define HRTIMER_ACTIVE_ALL (HRTIMER_ACTIVE_SOFT | HRTIMER_ACTIVE_HARD) static void retrigger_next_event(void *arg); +static ktime_t __hrtimer_cb_get_time(clockid_t clock_id); /* * The timer bases: @@ -76,42 +77,34 @@ DEFINE_PER_CPU(struct hrtimer_cpu_base, hrtimer_bases) = { .index = HRTIMER_BASE_MONOTONIC, .clockid = CLOCK_MONOTONIC, - .get_time = &ktime_get, }, { .index = HRTIMER_BASE_REALTIME, .clockid = CLOCK_REALTIME, - .get_time = &ktime_get_real, }, { .index = HRTIMER_BASE_BOOTTIME, .clockid = CLOCK_BOOTTIME, - .get_time = &ktime_get_boottime, }, { .index = HRTIMER_BASE_TAI, .clockid = CLOCK_TAI, - .get_time = &ktime_get_clocktai, }, { .index = HRTIMER_BASE_MONOTONIC_SOFT, .clockid = CLOCK_MONOTONIC, - .get_time = &ktime_get, }, { .index = HRTIMER_BASE_REALTIME_SOFT, .clockid = CLOCK_REALTIME, - .get_time = &ktime_get_real, }, { .index = HRTIMER_BASE_BOOTTIME_SOFT, .clockid = CLOCK_BOOTTIME, - .get_time = &ktime_get_boottime, }, { .index = HRTIMER_BASE_TAI_SOFT, .clockid = CLOCK_TAI, - .get_time = &ktime_get_clocktai, }, }, .csd = CSD_INIT(retrigger_next_event, NULL) @@ -208,7 +201,7 @@ static bool hrtimer_suitable_target(struct hrtimer *timer, struct hrtimer_clock_ /* * The offline local CPU can't be the default target if the * next remote target event is after this timer. Keep the - * elected new base. An IPI will we issued to reprogram + * elected new base. An IPI will be issued to reprogram * it as a last resort. */ if (!hrtimer_base_is_online(this_cpu_base)) @@ -787,10 +780,10 @@ static void retrigger_next_event(void *arg) * of the next expiring timer is enough. The return from the SMP * function call will take care of the reprogramming in case the * CPU was in a NOHZ idle sleep. + * + * In periodic low resolution mode, the next softirq expiration + * must also be updated. */ - if (!hrtimer_hres_active(base) && !tick_nohz_active) - return; - raw_spin_lock(&base->lock); hrtimer_update_base(base); if (hrtimer_hres_active(base)) @@ -1253,7 +1246,7 @@ static int __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, remove_hrtimer(timer, base, true, force_local); if (mode & HRTIMER_MODE_REL) - tim = ktime_add_safe(tim, base->get_time()); + tim = ktime_add_safe(tim, __hrtimer_cb_get_time(base->clockid)); tim = hrtimer_update_lowres(timer, tim, mode); @@ -1574,10 +1567,10 @@ u64 hrtimer_next_event_without(const struct hrtimer *exclude) static inline int hrtimer_clockid_to_base(clockid_t clock_id) { switch (clock_id) { - case CLOCK_REALTIME: - return HRTIMER_BASE_REALTIME; case CLOCK_MONOTONIC: return HRTIMER_BASE_MONOTONIC; + case CLOCK_REALTIME: + return HRTIMER_BASE_REALTIME; case CLOCK_BOOTTIME: return HRTIMER_BASE_BOOTTIME; case CLOCK_TAI: @@ -1588,6 +1581,29 @@ static inline int hrtimer_clockid_to_base(clockid_t clock_id) } } +static ktime_t __hrtimer_cb_get_time(clockid_t clock_id) +{ + switch (clock_id) { + case CLOCK_MONOTONIC: + return ktime_get(); + case CLOCK_REALTIME: + return ktime_get_real(); + case CLOCK_BOOTTIME: + return ktime_get_boottime(); + case CLOCK_TAI: + return ktime_get_clocktai(); + default: + WARN(1, "Invalid clockid %d. Using MONOTONIC\n", clock_id); + return ktime_get(); + } +} + +ktime_t hrtimer_cb_get_time(const struct hrtimer *timer) +{ + return __hrtimer_cb_get_time(timer->base->clockid); +} +EXPORT_SYMBOL_GPL(hrtimer_cb_get_time); + static void __hrtimer_setup(struct hrtimer *timer, enum hrtimer_restart (*function)(struct hrtimer *), clockid_t clock_id, enum hrtimer_mode mode) @@ -2295,11 +2311,6 @@ int hrtimers_cpu_dying(unsigned int dying_cpu) &new_base->clock_base[i]); } - /* - * The migration might have changed the first expiring softirq - * timer on this CPU. Update it. - */ - __hrtimer_get_next_event(new_base, HRTIMER_ACTIVE_SOFT); /* Tell the other CPU to retrigger the next event */ smp_call_function_single(ncpu, retrigger_next_event, NULL, 0); |