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authorJohn Stultz <john.stultz@linaro.org>2011-02-15 10:52:57 -0800
committerJohn Stultz <john.stultz@linaro.org>2011-02-21 12:53:09 -0800
commit7fdd7f89006dd5a4c702fa0ce0c272345fa44ae0 (patch)
tree737c69613d51165c791609d5545de8635df99b3c /kernel/posix-timers.c
parent70a08cca1227dc31c784ec930099a4417a06e7d0 (diff)
downloadlwn-7fdd7f89006dd5a4c702fa0ce0c272345fa44ae0.tar.gz
lwn-7fdd7f89006dd5a4c702fa0ce0c272345fa44ae0.zip
timers: Export CLOCK_BOOTTIME via the posix timers interface
This patch exports CLOCK_BOOTTIME through the posix timers interface CC: Jamie Lokier <jamie@shareable.org> CC: Thomas Gleixner <tglx@linutronix.de> CC: Alexander Shishkin <virtuoso@slind.org> CC: Arve Hjønnevåg <arve@android.com> Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'kernel/posix-timers.c')
-rw-r--r--kernel/posix-timers.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 44fcff131b38..4c0124919f9a 100644
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -187,7 +187,7 @@ static int posix_ktime_get_ts(clockid_t which_clock, struct timespec *tp)
}
/*
- * Get monotonic time for posix timers
+ * Get monotonic-raw time for posix timers
*/
static int posix_get_monotonic_raw(clockid_t which_clock, struct timespec *tp)
{
@@ -214,6 +214,14 @@ static int posix_get_coarse_res(const clockid_t which_clock, struct timespec *tp
*tp = ktime_to_timespec(KTIME_LOW_RES);
return 0;
}
+
+static int posix_get_boottime(const clockid_t which_clock, struct timespec *tp)
+{
+ get_monotonic_boottime(tp);
+ return 0;
+}
+
+
/*
* Initialize everything, well, just everything in Posix clocks/timers ;)
*/
@@ -253,12 +261,23 @@ static __init int init_posix_timers(void)
.clock_getres = posix_get_coarse_res,
.clock_get = posix_get_monotonic_coarse,
};
+ struct k_clock clock_boottime = {
+ .clock_getres = hrtimer_get_res,
+ .clock_get = posix_get_boottime,
+ .nsleep = common_nsleep,
+ .nsleep_restart = hrtimer_nanosleep_restart,
+ .timer_create = common_timer_create,
+ .timer_set = common_timer_set,
+ .timer_get = common_timer_get,
+ .timer_del = common_timer_del,
+ };
posix_timers_register_clock(CLOCK_REALTIME, &clock_realtime);
posix_timers_register_clock(CLOCK_MONOTONIC, &clock_monotonic);
posix_timers_register_clock(CLOCK_MONOTONIC_RAW, &clock_monotonic_raw);
posix_timers_register_clock(CLOCK_REALTIME_COARSE, &clock_realtime_coarse);
posix_timers_register_clock(CLOCK_MONOTONIC_COARSE, &clock_monotonic_coarse);
+ posix_timers_register_clock(CLOCK_BOOTTIME, &clock_boottime);
posix_timers_cache = kmem_cache_create("posix_timers_cache",
sizeof (struct k_itimer), 0, SLAB_PANIC,