[igt-dev] [PATCH i-g-t 1/7] gem_wsim: Check sleep times

[Chris Wilson]

Quoting Tvrtko Ursulin (2018-08-14 16:05:13)
> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> 
> Notice in more places if we are running behind.
> 
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> ---
>  benchmarks/gem_wsim.c | 52 ++++++++++++++++++++++++++++++++++++++-----
>  1 file changed, 46 insertions(+), 6 deletions(-)
> 
> diff --git a/benchmarks/gem_wsim.c b/benchmarks/gem_wsim.c
> index 80f180829241..ead91b0f009b 100644
> --- a/benchmarks/gem_wsim.c
> +++ b/benchmarks/gem_wsim.c
> @@ -1718,6 +1718,21 @@ static bool sync_deps(struct workload *wrk, struct w_step *w)
>         return synced;
>  }
>  
> +static unsigned int measured_usleep(unsigned int usec)
> +{
> +       struct timespec ts = { };
> +       unsigned int slept;
> +
> +       slept = igt_nsec_elapsed(&ts);
> +       igt_assert(slept == 0);
> +       do {
> +               usleep(usec - slept);
> +               slept = igt_nsec_elapsed(&ts) / 1000;
> +       } while (slept < usec);
> +
> +       return igt_nsec_elapsed(&ts);
> +}
> +
>  static void *run_workload(void *data)
>  {
>         struct workload *wrk = (struct workload *)data;
> @@ -1739,7 +1754,7 @@ static void *run_workload(void *data)
>              count++) {
>                 unsigned int cur_seqno = wrk->sync_seqno;
>  
> -               clock_gettime(CLOCK_MONOTONIC, &wrk->repeat_start);
> +               igt_gettime(&wrk->repeat_start);

Were you already linking against libigt?
This code is not set up to hit an igt_assert()...
-Chris