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authorJohn Stultz <john.stultz@linaro.org>2013-01-21 17:00:11 -0800
committerJohn Stultz <john.stultz@linaro.org>2013-03-22 16:19:59 -0700
commit90adda98b89aaf68b06014ecf805b6c477daa19b (patch)
treec50d47c4c344774205569ce42e13d16a8174b02e /kernel/hrtimer.c
parent1ff3c9677bff7e468e0c487d0ffefe4e901d33f4 (diff)
downloadlinux-90adda98b89aaf68b06014ecf805b6c477daa19b.tar.gz
hrtimer: Add hrtimer support for CLOCK_TAI
Add hrtimer support for CLOCK_TAI, as well as posix timer interfaces. Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'kernel/hrtimer.c')
-rw-r--r--kernel/hrtimer.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index cc47812d3fe..258720741d3 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -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);
}
/*