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| author | Haneen Mohammed <hamohammed.sa@gmail.com> | 2018-09-04 00:18:17 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2018-09-05 16:04:50 +0200 |
| commit | 0ca33adb91c0a94a29bdcecf49cd08fe24a21666 (patch) | |
| tree | e487af079a4fd29add813e801f9afcc3f0f2d37f /drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | |
| parent | 428e15cc41e3603942edd4a1aa991127ce9eccea (diff) | |
drm/vkms: Fix race condition around accessing frame number
crtc_state is accessed by both vblank_handle() and the ordered
work_struct handle vkms_crc_work_handle() to retrieve and or update
the frame number for computed CRC.
Since work_struct can fail, add frame_end to account for missing frame
numbers.
Use (frame_[start/end]) for synchronization between hrtimer callback
and ordered work_struct handle.
This patch passes the following subtests from igt kms_pipe_crc_basic test:
bad-source, read-crc-pipe-A, read-crc-pipe-A-frame-sequence,
nonblocking-crc-pipe-A, nonblocking-crc-pipe-A-frame-sequence
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180903211743.GA2773@haneenDRM
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
0 files changed, 0 insertions, 0 deletions