On Wed, Nov 23, 2016 at 12:59:42PM +0200, Abdiel Janulgue wrote:
> @@ -933,8 +755,13 @@ static unsigned int run_test_step(struct test_output *o)
> if (o->flags & TEST_MODESET)
> igt_assert(set_mode(o, o->fb_ids[o->current_fb_id], 0, 0) == 0);
>
> - if (o->flags & TEST_DPMS)
> + if (o->flags & TEST_DPMS) {
> + if (spin_rcs)
> + igt_spin_batch_end(spin_rcs);
> + if (spin_bcs)
> + igt_spin_batch_end(spin_bcs);
> set_dpms(o, DRM_MODE_DPMS_ON);
This is subtly different as the set_dpms() is now called with an idle
bo. Now, set_dpms() may or may not block so calling it first then
igt_spin_batch_end() may deadlock, so this requires a set_timeout first
followed by end afterwards.
> + }
>
> if (o->flags & TEST_VBLANK_RACE) {
> struct vblank_reply reply;
> @@ -967,8 +794,13 @@ static unsigned int run_test_step(struct test_output *o)
> igt_assert(__wait_for_vblank(TEST_VBLANK_BLOCK, o->pipe, 1, 0,
> &reply) == 0);
> }
>
> - if (do_flip)
> + if (do_flip) {
> do_or_die(do_page_flip(o, new_fb_id, !(o->flags &
> TEST_NOEVENT)));
> + if (spin_rcs)
> + igt_spin_batch_end(spin_rcs);
> + if (spin_bcs)
> + igt_spin_batch_end(spin_bcs);
Hmm, these need new_fb_id to be busy (separate tests for current /
both), I think you made current busy instead.
Order is good here (i.e. queue flip whilst busy). However, better would
be to delay the batch completion for a vblank just to stress the code
that little bit harder. (Even an assert that flip / bo are still busy as
we handle the vblank and complete the batch.)
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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