Quoting Chris Wilson (2019-07-02 15:23:39)
> When forcing a reset, it is crucial that the kernel correctly identifies
> the injected hang. Verify this is the case for reset-stress.
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> ---
> Keep the igt_spin_free at the end to avoid issues where we fail to
> bypass the guilty batch.
Ping?
> ---
> tests/i915/gem_eio.c | 17 +++++++++--------
> 1 file changed, 9 insertions(+), 8 deletions(-)
>
> diff --git a/tests/i915/gem_eio.c b/tests/i915/gem_eio.c
> index 5396a04e2..dc7afb0fd 100644
> --- a/tests/i915/gem_eio.c
> +++ b/tests/i915/gem_eio.c
> @@ -175,7 +175,7 @@ static igt_spin_t * __spin_poll(int fd, uint32_t ctx, unsigned long flags)
> struct igt_spin_factory opts = {
> .ctx = ctx,
> .engine = flags,
> - .flags = IGT_SPIN_FAST,
> + .flags = IGT_SPIN_FAST | IGT_SPIN_FENCE_OUT,
> };
>
> if (gem_can_store_dword(fd, opts.engine))
> @@ -270,12 +270,12 @@ static void check_wait(int fd, uint32_t bo, unsigned int wait, igt_stats_t *st)
> igt_stats_push(st, igt_nsec_elapsed(&ts));
> }
>
> -static void check_wait_elapsed(int fd, igt_stats_t *st)
> +static void check_wait_elapsed(const char *prefix, int fd, igt_stats_t *st)
> {
> double med, max, limit;
>
> - igt_info("Completed %d resets, wakeups took %.3f+-%.3fms (min:%.3fms, median:%.3fms, max:%.3fms)\n",
> - st->n_values,
> + igt_info("%s: completed %d resets, wakeups took %.3f+-%.3fms (min:%.3fms, median:%.3fms, max:%.3fms)\n",
> + prefix, st->n_values,
> igt_stats_get_mean(st)*1e-6,
> igt_stats_get_std_deviation(st)*1e-6,
> igt_stats_get_min(st)*1e-6,
> @@ -715,8 +715,8 @@ static void test_inflight_internal(int fd, unsigned int wait)
> close(fd);
> }
>
> -static void reset_stress(int fd,
> - uint32_t ctx0, unsigned int engine,
> +static void reset_stress(int fd, uint32_t ctx0,
> + const char *name, unsigned int engine,
> unsigned int flags)
> {
> const uint32_t bbe = MI_BATCH_BUFFER_END;
> @@ -759,6 +759,7 @@ static void reset_stress(int fd,
>
> /* Wedge after a small delay. */
> check_wait(fd, obj.handle, 100e3, &stats);
> + igt_assert_eq(sync_fence_status(hang->out_fence), -EIO);
>
> /* Unwedge by forcing a reset. */
> igt_assert(i915_reset_control(true));
> @@ -782,7 +783,7 @@ static void reset_stress(int fd,
> igt_spin_free(fd, hang);
> gem_context_destroy(fd, ctx);
> }
> - check_wait_elapsed(fd, &stats);
> + check_wait_elapsed(name, fd, &stats);
> igt_stats_fini(&stats);
>
> gem_close(fd, obj.handle);
> @@ -797,7 +798,7 @@ static void test_reset_stress(int fd, unsigned int flags)
> unsigned int engine;
>
> for_each_engine(fd, engine)
> - reset_stress(fd, ctx0, engine, flags);
> + reset_stress(fd, ctx0, e__->name, engine, flags);
>
> gem_context_destroy(fd, ctx0);
> }
> --
> 2.20.1
>
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