On Wed, Jan 15, 2020 at 12:57 PM Brian Ho <brian@xxxxxxxxx> wrote: > > This patch set implements the MSM_WAIT_IOVA ioctl which lets > userspace sleep until the value at a given iova reaches a certain > condition. This is needed in turnip to implement the > VK_QUERY_RESULT_WAIT_BIT flag for vkGetQueryPoolResults. > > First, we add a GPU-wide wait queue that is signaled on all IRQs. > We can then wait on this wait queue inside MSM_WAIT_IOVA until the > condition is met. > > The corresponding merge request in mesa can be found at: > https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3279 > > Changes in v2: > * Updated cleanup logic on error > * Added a mask > * 32 bit values by default For the series: Reviewed-by: Kristian H. Kristensen <hoegsberg@xxxxxxxxxx> > Brian Ho (2): > drm/msm: Add a GPU-wide wait queue > drm/msm: Add MSM_WAIT_IOVA ioctl > > drivers/gpu/drm/msm/msm_drv.c | 61 +++++++++++++++++++++++++++++++++-- > drivers/gpu/drm/msm/msm_gpu.c | 4 +++ > drivers/gpu/drm/msm/msm_gpu.h | 3 ++ > include/uapi/drm/msm_drm.h | 14 ++++++++ > 4 files changed, 80 insertions(+), 2 deletions(-) > > -- > 2.25.0.rc1.283.g88dfdc4193-goog >
