metag: Remove TIF_POLLING_NRFLAG
authorJames Hogan <james.hogan@imgtec.com>
Fri, 9 May 2014 14:36:21 +0000 (15:36 +0100)
committerIngo Molnar <mingo@kernel.org>
Thu, 22 May 2014 08:22:10 +0000 (10:22 +0200)
commit31e6cdefd377ae90bea5c6a4e1dc519793577a24
treecbfa427fb9c8143175815562714b6cdb4f31c50d
parent08c373e5123b4595588ae1a7aa7e00a046c61cc6
metag: Remove TIF_POLLING_NRFLAG

The Meta idle function jumps into the interrupt handler which
efficiently blocks waiting for the next interrupt when it reads the
interrupt status register (TXSTATI). No other (polling) idle functions
can be used, therefore TIF_POLLING_NRFLAG is unnecessary, so lets remove
it.

Peter Zijlstra said:
> Most archs have (x86) hlt or (arm) wfi like idle instructions, and if
> that is your only possible idle function, you'll require the interrupt
> to wake up and there's really no point to having the POLLING bit.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/536CEB7E.9080007@imgtec.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/metag/include/asm/thread_info.h