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| author | Rob Clark <robdclark@chromium.org> | 2021-03-25 04:23:53 +0300 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2021-04-07 21:05:43 +0300 |
| commit | 3ab1c5cc3939b3322ebd27a44b8ee6a16eccc9f5 (patch) | |
| tree | 4313f000ef830dc2c652e49f125e50629b7f44ac /drivers/gpu/drm/msm/msm_drv.c | |
| parent | f5b1a878435061f254bd1cd8c5cba306838d9236 (diff) | |
| download | linux-3ab1c5cc3939b3322ebd27a44b8ee6a16eccc9f5.tar.xz | |
drm/msm: Add param for userspace to query suspend count
Performance counts, and ALWAYS_ON counters used for capturing GPU
timestamps, lose their state across suspend/resume cycles. Userspace
tooling for performance monitoring needs to be aware of this. For
example, after a suspend userspace needs to recalibrate it's offset
between CPU and GPU time.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Jordan Crouse <jordan@cosmicpenguin.net>
Link: https://lore.kernel.org/r/20210325012358.1759770-3-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 898e6d05de9a..09a968c4d27e 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -39,6 +39,7 @@ * GEM object's debug name * - 1.5.0 - Add SUBMITQUERY_QUERY ioctl * - 1.6.0 - Syncobj support + * - 1.7.0 - Add MSM_PARAM_SUSPENDS to access suspend count */ #define MSM_VERSION_MAJOR 1 #define MSM_VERSION_MINOR 6 |