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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>
This commit is contained in:
Thomas Gleixner 2011-02-01 13:51:06 +00:00
parent 2fd1f04089
commit 1976945eea
2 changed files with 14 additions and 0 deletions
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2
include/linux/posix-timers.h
View File

@ -85,6 +85,8 @@ struct k_clock {
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 */

12
kernel/posix-cpu-timers.c
View File

@ -1604,6 +1604,18 @@ static long thread_cpu_nsleep_restart(struct restart_block *restart_block)
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 = {