Seema Khowala aacc33bb47 gpu: nvgpu: do not use raw spinlock for ch->timeout.lock ...

With PREEMPT_RT kernel, regular spinlocks are mapped onto sleeping
spinlocks (rt_mutex locks), and raw spinlocks retain their behaviour.

Schedule while atomic can occur in gk20a_channel_timeout_start,
as it acquires ch->timeout.lock raw spinlock, and then calls
functions that acquire ch->ch_timedout_lock regular spinlock.

Bug 200484795

Change-Id: Iacc63195d8ee6a2d571c998da1b4b5d396f49439
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2004100
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2019-01-28 12:44:00 -08:00

66 KiB

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