posix-timers: Introduce clock_posix_cpu
The CLOCK_DISPATCH() macro is a horrible magic. We call common
functions if a function pointer is not set. That's just backwards.
To support dynamic file decriptor based clocks we need to cleanup that
dispatch logic.
Create a k_clock struct clock_posix_cpu which has all the
posix-cpu-timer functions filled in. After the cleanup the functions
can be made static.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <johnstul@us.ibm.com>
Tested-by: Richard Cochran <richard.cochran@omicron.at>
LKML-Reference: <20110201134417.841974553@linutronix.de>
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index b2c14cb..1330ff3 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -85,6 +85,8 @@
struct itimerspec * cur_setting);
};
+extern struct k_clock clock_posix_cpu;
+
void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock);
/* error handlers for timer_create, nanosleep and settime */
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index 11b91dc..816cd49 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -1604,6 +1604,18 @@
return -EINVAL;
}
+struct k_clock clock_posix_cpu = {
+ .clock_getres = posix_cpu_clock_getres,
+ .clock_set = posix_cpu_clock_set,
+ .clock_get = posix_cpu_clock_get,
+ .timer_create = posix_cpu_timer_create,
+ .nsleep = posix_cpu_nsleep,
+ .nsleep_restart = posix_cpu_nsleep_restart,
+ .timer_set = posix_cpu_timer_set,
+ .timer_del = posix_cpu_timer_del,
+ .timer_get = posix_cpu_timer_get,
+};
+
static __init int init_posix_cpu_timers(void)
{
struct k_clock process = {