On 2021-08-23 15:00:15 [-0500], Clark Williams wrote: > Found two separate spots where i915 was throwing "sleeping > function called from invalid context" when running on a > PREEMPT_RT kernel. In both cases it was from calling > local_irq_disable prior to taking a spin_lock. Since spin > locks are converted to rt_mutex_t on PREEMPT_RT this means > that we might sleep with interrupts disabled. > > Since in both cases the calls were in threaded context on RT > (irq or ksoftirqd) and in no danger of reentrance, change the > code to only disable interrupts on non-PREEMPT_RT kernels. > > Signed-off-by: Clark Williams <williams@xxxxxxxxxx> I try to deal with this in https://lkml.kernel.org/r/20210908185703.2989414-1-bigeasy@xxxxxxxxxxxxx Sebastian
