On Thursday 10 January 2008 03:12:35 Sebastien Dugue wrote:
> Add a Missed period (calc took too long) check to periodic_cpu_load
> just as is done in periodic_cpu_load_single.
>
> Signed-off-by: Sebastien Dugue <[EMAIL PROTECTED]>
Acked-by: Darren Hart <[EMAIL PROTECTED]>
> Cc: Darren Hart <[EMAIL PROTECTED]>
> Cc: Tim Chavez <[EMAIL PROTECTED]>
> ---
> .../func/periodic_cpu_load/periodic_cpu_load.c | 11
> +++++++++-- 1 files changed, 9 insertions(+), 2 deletions(-)
>
> diff --git
> a/testcases/realtime/func/periodic_cpu_load/periodic_cpu_load.c
> b/testcases/realtime/func/periodic_cpu_load/periodic_cpu_load.c index
> 2bf9c53..3c39ac3 100644
> --- a/testcases/realtime/func/periodic_cpu_load/periodic_cpu_load.c
> +++ b/testcases/realtime/func/periodic_cpu_load/periodic_cpu_load.c
> @@ -127,7 +127,7 @@ void *periodic_thread(void *thread)
> void*(*func)(void*) = parg->func;
>
> int i = 0;
> - nsec_t next;
> + nsec_t next, now;
> nsec_t exe_start, exe_end, exe_time;
>
> next = rt_gettime();
> @@ -146,7 +146,14 @@ void *periodic_thread(void *thread)
> dat[t->id].records[i].y = exe_time/NS_PER_US;
>
> i++;
> - rt_nanosleep(next - rt_gettime());
> +
> + now = rt_gettime();
> + if (now > next) {
> + printf("Missed period, aborting (calc took too
> long)\n");
> + fail[t->id] = 1;
> + break;
> + }
> + rt_nanosleep(next - now);
> }
>
> printf("TID %d (%c - prio %d) complete\n", t->id,
> groupname[t->id>>2],
--
Darren Hart
IBM Linux Technology Center
Real-Time Linux Team
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