diff options
| author | Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org> | 2015-11-19 16:30:02 +0200 |
|---|---|---|
| committer | Maxim Uvarov <maxim.uvarov@linaro.org> | 2015-11-30 12:20:38 +0300 |
| commit | 56e6043816ecbe954e804004f0b13cdad5915341 (patch) | |
| tree | 8c4fdd121cb698c96e96b6543223645b01d267cc /platform | |
| parent | dc8984ae27ba81f76634cf1e58489664dc1569c4 (diff) | |
linux-generic: odp_timer: warn if tick is late
If tick is late then application should be warned about this.
It means that actual timer resolution is worse than expected.
The default timer resolution is set 10ms, that is equal to jiffy
on most systems. The default resolution is set bearing in mind
that on a CPU runs maximum two threads that ideally fits in 10ms.
But user can change it to be smaller, in case if CPU0 is isolated
and it handles only the timer ticks. This patch helps user to set
correct timer resolution.
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: Ola Liljedahl <ola.liljedahl@linaro.org>
Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Diffstat (limited to 'platform')
| -rw-r--r-- | platform/linux-generic/odp_timer.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/platform/linux-generic/odp_timer.c b/platform/linux-generic/odp_timer.c index e8f026744..407ccc173 100644 --- a/platform/linux-generic/odp_timer.c +++ b/platform/linux-generic/odp_timer.c @@ -632,7 +632,14 @@ static unsigned odp_timer_pool_expire(odp_timer_pool_t tpid, uint64_t tick) static void timer_notify(sigval_t sigval) { + int overrun; odp_timer_pool *tp = (odp_timer_pool *)sigval.sival_ptr; + + overrun = timer_getoverrun(tp->timerid); + if (overrun) + ODP_ERR("\n\t%d ticks overrun on timer pool \"%s\", timer resolution too high\n", + overrun, tp->name); + #ifdef __ARM_ARCH odp_timer *array = &tp->timers[0]; uint32_t i; |