Re: [PATCH V9 08/13] posix clocks: cleanup the CLOCK_DISPTACHmacro

From: Thomas Gleixner
Date: Thu Jan 13 2011 - 12:04:21 EST


On Thu, 13 Jan 2011, Richard Cochran wrote:
> int posix_cpu_clock_getres(const clockid_t which_clock, struct timespec *ts);
> int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *ts);
> -int posix_cpu_clock_set(const clockid_t which_clock, const struct timespec *ts);
> +int posix_cpu_clock_set(const clockid_t which_clock, struct timespec *ts);

Shouldn't we change the clock_set function to have *ts const in all places ?

> static int posix_ktime_get_ts(clockid_t which_clock, struct timespec *tp)
> @@ -279,12 +230,29 @@ static __init int init_posix_timers(void)
> {
> struct k_clock clock_realtime = {
> .clock_getres = hrtimer_get_res,
> + /* defaults: */
> + .clock_adj = common_clock_adj,
> + .clock_get = common_clock_get,
> + .clock_set = common_clock_set,
> + .nsleep = common_nsleep,
> + .nsleep_restart = common_nsleep_restart,
> + .timer_create = common_timer_create,
> + .timer_del = common_timer_del,
> + .timer_get = common_timer_get,
> + .timer_set = common_timer_set,
> };
> struct k_clock clock_monotonic = {
> .clock_getres = hrtimer_get_res,
> .clock_get = posix_ktime_get_ts,
> .clock_set = do_posix_clock_nosettime,
> .clock_adj = do_posix_clock_noadjtime,
> + /* defaults: */
> + .nsleep = common_nsleep,
> + .nsleep_restart = common_nsleep_restart,
> + .timer_create = common_timer_create,
> + .timer_del = common_timer_del,
> + .timer_get = common_timer_get,
> + .timer_set = common_timer_set,
> };
> struct k_clock clock_monotonic_raw = {
> .clock_getres = hrtimer_get_res,
> @@ -293,6 +261,11 @@ static __init int init_posix_timers(void)
> .clock_adj = do_posix_clock_noadjtime,
> .timer_create = no_timer_create,
> .nsleep = no_nsleep,
> + /* defaults: */
> + .nsleep_restart = common_nsleep_restart,
> + .timer_del = common_timer_del,
> + .timer_get = common_timer_get,
> + .timer_set = common_timer_set,

Hmm, we do not need to set functional entries for clocks which neither
implement timer_create nor nsleep.

Otherwise I really like the outcome. :)

Thanks for your patience !

tglx
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