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hrtimer: Add hrtimer support for CLOCK_TAI

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Add hrtimer support for CLOCK_TAI, as well as posix timer interfaces.

Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
John Stultz
2013-01-21 17:00:11 -08:00
parent 1ff3c9677b
commit 90adda98b8
5 changed files with 44 additions and 3 deletions
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14
kernel/hrtimer.c
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@@ -83,6 +83,12 @@ DEFINE_PER_CPU(struct hrtimer_cpu_base, hrtimer_bases) =
.get_time = &ktime_get_boottime,
.resolution = KTIME_LOW_RES,
},
{
.index = HRTIMER_BASE_TAI,
.clockid = CLOCK_TAI,
.get_time = &ktime_get_clocktai,
.resolution = KTIME_LOW_RES,
},
}
};
@@ -90,6 +96,7 @@ static const int hrtimer_clock_to_base_table[MAX_CLOCKS] = {
[CLOCK_REALTIME] = HRTIMER_BASE_REALTIME,
[CLOCK_MONOTONIC] = HRTIMER_BASE_MONOTONIC,
[CLOCK_BOOTTIME] = HRTIMER_BASE_BOOTTIME,
[CLOCK_TAI] = HRTIMER_BASE_TAI,
};
static inline int hrtimer_clockid_to_base(clockid_t clock_id)
@@ -106,8 +113,10 @@ static void hrtimer_get_softirq_time(struct hrtimer_cpu_base *base)
{
ktime_t xtim, mono, boot;
struct timespec xts, tom, slp;
s32 tai_offset;
get_xtime_and_monotonic_and_sleep_offset(&xts, &tom, &slp);
tai_offset = timekeeping_get_tai_offset();
xtim = timespec_to_ktime(xts);
mono = ktime_add(xtim, timespec_to_ktime(tom));
@@ -115,6 +124,8 @@ static void hrtimer_get_softirq_time(struct hrtimer_cpu_base *base)
base->clock_base[HRTIMER_BASE_REALTIME].softirq_time = xtim;
base->clock_base[HRTIMER_BASE_MONOTONIC].softirq_time = mono;
base->clock_base[HRTIMER_BASE_BOOTTIME].softirq_time = boot;
base->clock_base[HRTIMER_BASE_TAI].softirq_time =
ktime_add(xtim, ktime_set(tai_offset, 0));
}
/*
@@ -651,8 +662,9 @@ static inline ktime_t hrtimer_update_base(struct hrtimer_cpu_base *base)
{
ktime_t *offs_real = &base->clock_base[HRTIMER_BASE_REALTIME].offset;
ktime_t *offs_boot = &base->clock_base[HRTIMER_BASE_BOOTTIME].offset;
ktime_t *offs_tai = &base->clock_base[HRTIMER_BASE_TAI].offset;
return ktime_get_update_offsets(offs_real, offs_boot);
return ktime_get_update_offsets(offs_real, offs_boot, offs_tai);
}
/*