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| author | Deepak Nibade <dnibade@nvidia.com> | 2017-03-16 06:22:55 -0400 |
|---|---|---|
| committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2017-03-23 10:13:50 -0400 |
| commit | 978d13efe5719b28ea90b95d21bf25066df75ca8 (patch) | |
| tree | 43042a95fa8871eb33d78abe4d7e3ee6d0dab4fb /drivers/gpu/nvgpu/lpwr/rppg.c | |
| parent | ebe71ea9a2542fcd75dfa75b4995d953a84b7c1a (diff) | |
gpu: nvgpu: hold mutex to get cde context only
In gk20a_cde_convert(), we hold cde_app.mutex almost
for everything which is unnecessary
Also, this causes a deadlock scenario when gk20a_do_idle()
is called
In some cases it is possible that Thread 1
holds the lock and is trying to power on GPU, and
Thread 2 is trying to power off GPU and then grab
cde_app.mutex to cleanup GPU state
To fix this, grab the mutex only for gk20a_cde_get_context()
and then release it
Bug 200287073
Change-Id: Ic4856604652d0d4024abdeb5c2f8f03910c601a5
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1324328
(cherry picked from commit 3c8eef0d0e9ef3307e2792e3e127c10f3ff118a7)
Reviewed-on: http://git-master/r/1322030
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/lpwr/rppg.c')
0 files changed, 0 insertions, 0 deletions