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timer_domain: check if delay occurred during scheduling 

This patch checks if during scheduling we were
delayed.
If such situation happens we log error message.

Signed-off-by: Marcin Rajwa <marcin.rajwa@linux.intel.com>
This commit is contained in:
Marcin Rajwa 2019-09-10 00:04:13 +02:00 committed by Tomasz Lauda
parent 75188e2243
commit ccba8e0668
1 changed files with 22 additions and 4 deletions
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26
src/schedule/timer_domain.c
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@ -24,6 +24,16 @@ struct timer_domain {
struct ll_schedule_domain_ops timer_domain_ops;
static inline void timer_report_delay(int id, uint64_t delay)
{
uint32_t ll_delay_us = (delay * 1000) /
clock_ms_to_ticks(PLATFORM_DEFAULT_CLOCK, 1);
trace_schedule_error("timer_report_delay(): timer %d "
"delayed by %d uS %d ticks", id, ll_delay_us,
delay);
}
static int timer_domain_register(struct ll_schedule_domain *domain,
uint64_t period, struct task *task,
void (*handler)(void *arg), void *arg)
@ -72,12 +82,20 @@ static void timer_domain_disable(struct ll_schedule_domain *domain, int core)
static void timer_domain_set(struct ll_schedule_domain *domain, uint64_t start)
{
struct timer_domain *timer_domain = ll_sch_domain_get_pdata(domain);
uint64_t ticks = domain->ticks_per_ms * timer_domain->timeout / 1000 +
start;
uint64_t ticks_req = domain->ticks_per_ms * timer_domain->timeout /
1000 + start;
uint64_t ticks_set;
platform_timer_set(timer_domain->timer, ticks);
ticks_set = platform_timer_set(timer_domain->timer, ticks_req);
domain->last_tick = ticks;
/* Was timer set to the value we requested? If no it means some
* delay occurred and we should report that in error log.
*/
if (ticks_req < ticks_set)
timer_report_delay(timer_domain->timer->id,
ticks_set - ticks_req);
domain->last_tick = ticks_set;
}
static void timer_domain_clear(struct ll_schedule_domain *domain)