hongzha1 via Xenomai <[email protected]> writes:
> Initialise timer on specified cpu. > > Signed-off-by: hongzha1 <[email protected]> > > diff --git a/include/cobalt/kernel/rtdm/driver.h > b/include/cobalt/kernel/rtdm/driver.h > index 5406e54a5..d58df33ce 100644 > --- a/include/cobalt/kernel/rtdm/driver.h > +++ b/include/cobalt/kernel/rtdm/driver.h > @@ -966,6 +966,9 @@ enum rtdm_timer_mode { > int rtdm_timer_init(rtdm_timer_t *timer, rtdm_timer_handler_t handler, > const char *name); > > +int rtdm_timer_init_on_cpu(rtdm_timer_t *timer, rtdm_timer_handler_t handler, > + const char *name, int cpu); > + > void rtdm_timer_destroy(rtdm_timer_t *timer); > > int rtdm_timer_start(rtdm_timer_t *timer, nanosecs_abs_t expiry, > diff --git a/kernel/cobalt/rtdm/drvlib.c b/kernel/cobalt/rtdm/drvlib.c > index 069a442e5..268bf8fbf 100644 > --- a/kernel/cobalt/rtdm/drvlib.c > +++ b/kernel/cobalt/rtdm/drvlib.c > @@ -583,15 +583,44 @@ EXPORT_SYMBOL_GPL(rtdm_task_busy_sleep); > int rtdm_timer_init(rtdm_timer_t *timer, rtdm_timer_handler_t handler, > const char *name) > { > + /*cpu0 is used when no affinity was given*/ > + return rtdm_timer_init_on_cpu(timer, handler, name, 0); > +} > +EXPORT_SYMBOL_GPL(rtdm_timer_init); > + > +/** > + * @brief Initialise a timer on specified cpu > + * > + * @param[in,out] timer Timer handle > + * @param[in] handler Handler to be called on timer expiry > + * @param[in] name Optional timer name > + * @param[in] cpu that run on > + * > + * @return 0 on success, otherwise negative error code > + * > + * @coretags{task-unrestricted} > + */ > +int rtdm_timer_init_on_cpu(rtdm_timer_t *timer, > + rtdm_timer_handler_t handler, const char *name, int cpu) > +{ > + struct xnsched *sched; > + > if (!realtime_core_enabled()) > return -ENOSYS; > > - xntimer_init((timer), &nkclock, handler, NULL, XNTIMER_IGRAVITY); > + if (!cpu_online(cpu)) > + return -EINVAL; > + We also have to check the CPU against the xnsched_realtime_cpus mask. Only the CPUs set in the latter receive clock ticks. -- Philippe.
