linux/arch/powerpc/include
Benjamin Herrenschmidt a203658b5e powerpc/opal: Wake up kopald polling thread before waiting for events
On some environments (prototype machines, some simulators, etc...)
there is no functional interrupt source to signal completion, so
we rely on the fairly slow OPAL heartbeat.

In a number of cases, the calls complete very quickly or even
immediately. We've observed that it helps a lot to wakeup the OPAL
heartbeat thread before waiting for event in those cases, it will
call OPAL immediately to collect completions for anything that
finished fast enough.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-By: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-07-08 19:53:26 +10:00
..
asm powerpc/opal: Wake up kopald polling thread before waiting for events 2016-07-08 19:53:26 +10:00
uapi/asm powerpc updates for 4.7 2016-05-20 10:12:41 -07:00