Hi Veera, On Wed, 20 Jan 2021 at 02:00, John Stultz <john.stultz@xxxxxxxxxx> wrote: > > On Fri, Jan 15, 2021 at 4:31 PM Veera Sundaram Sankaran > <veeras@xxxxxxxxxxxxxx> wrote: > > > > Some drivers have hardware capability to get the precise HW timestamp > > of certain events based on which the fences are triggered. The delta > > between the event HW timestamp & current HW reference timestamp can > > be used to calculate the timestamp in kernel's CLOCK_MONOTONIC time > > domain. This allows it to set accurate timestamp factoring out any > > software and IRQ latencies. Add a timestamp variant of fence signal > > function, dma_fence_signal_timestamp to allow drivers to update the > > precise timestamp for fences. Thank you for the patches! Daniel, Christian, Gustavo: if there are no objections, I will queue up this series via drm-misc-next. > > > > Changes in v2: > > - Add a new fence signal variant instead of modifying fence struct > > > > Changes in v3: > > - Add timestamp domain information to commit-text and > > dma_fence_signal_timestamp documentation > > > > Signed-off-by: Veera Sundaram Sankaran <veeras@xxxxxxxxxxxxxx> > > --- > > drivers/dma-buf/dma-fence.c | 70 ++++++++++++++++++++++++++++++++++++++++----- > > include/linux/dma-fence.h | 3 ++ > > 2 files changed, 66 insertions(+), 7 deletions(-) > > Thanks for respinning this! > > Reviewed-by: John Stultz <john.stultz@xxxxxxxxxx> > > -john Best, Sumit. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
