[Intel-gfx] [PATCH] kernel.h: Add non_block_start/end()

[Christopher Lameter]

On Tue, 21 May 2019, Daniel Vetter wrote:

> In some special cases we must not block, but there's not a
> spinlock, preempt-off, irqs-off or similar critical section already
> that arms the might_sleep() debug checks. Add a non_block_start/end()
> pair to annotate these.

Just putting preempt on/off around these is not sufficient?

If not and you need to add another type of critical section then would
this not need to be added to the preempt counters? See
include/linux/preempt.h? Looks like there are sufficient bits left to put
the counter in there.