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| author | Konsta Holtta <kholtta@nvidia.com> | 2018-01-19 08:06:50 -0500 |
|---|---|---|
| committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2018-01-22 11:29:05 -0500 |
| commit | f6d898656a6d7c197aa27ee53f5f0151fb6dfcf5 (patch) | |
| tree | 2a36814ea2b763fd23be67583e9d9000892136bc /drivers/gpu/nvgpu/gp106/gr_gp106.c | |
| parent | 3ccf5c85fbc329cc5a72b86f83379d7a151a1f5a (diff) | |
gpu: nvgpu: note railgate_allowed in do_idle
The idling and unidling of deterministic channels in the
do_idle/do_unidle path assume that each deterministic channel holds a
power reference. This is no longer the case if railgating has been
allowed for a channel via the deterministic options ioctl which also
causes the channel to drop the power ref that it holds otherwise during
its lifetime.
All this is happening inside the deterministic_busy rwsem, which also
guards the ioctl changing those deterministic option states.
Bug 200327089
Change-Id: I9ce312bbaa459b3cf4a7541fa369186b78c3afdc
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1642310
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/gp106/gr_gp106.c')
0 files changed, 0 insertions, 0 deletions