[igt-dev] [PATCH i-g-t] tests/kms_dp_tiled_display: Increase the time limit to receive all page flips
Shankar, Uma
uma.shankar at intel.com
Fri Mar 6 07:00:02 UTC 2020
> -----Original Message-----
> From: igt-dev <igt-dev-bounces at lists.freedesktop.org> On Behalf Of Karthik B S
> Sent: Friday, March 6, 2020 9:58 AM
> To: igt-dev at lists.freedesktop.org
> Subject: [igt-dev] [PATCH i-g-t] tests/kms_dp_tiled_display: Increase the time limit to
> receive all page flips
>
> Increasing the time limit from 10us to 20us, within which page flip events must be
> received from all the tiles.
Can you add some more justification as to why we need to increase it.
How we determined this etc.
> Signed-off-by: Karthik B S <karthik.b.s at intel.com>
> ---
> tests/kms_dp_tiled_display.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tests/kms_dp_tiled_display.c b/tests/kms_dp_tiled_display.c index
> b1160fee..6d19fea6 100644
> --- a/tests/kms_dp_tiled_display.c
> +++ b/tests/kms_dp_tiled_display.c
> @@ -362,9 +362,9 @@ static void page_flip_handler(int fd, unsigned int seq,
>
> /*
> * For seamless tear-free display, the page flip event timestamps
> - * from all the tiles should not differ by more than 10us.
> + * from all the tiles should not differ by more than 20us.
> */
> - igt_fail_on_f(labs(usec) >= 10, "Delayed page flip event from CRTC:%d at
> %u:%u\n",
> + igt_fail_on_f(labs(usec) >= 20, "Delayed page flip event from CRTC:%d
> +at %u:%u\n",
> crtc_id, tv_sec, tv_usec);
> }
>
> --
> 2.22.0
>
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