Re: [PATCH 09/13] powerpc/64s: cpuidle set polling before enabling irqs

Nicholas Piggin [off-list ref] writes:

On Wed, 14 Jun 2017 21:40:52 +1000
Michael Ellerman [off-list ref] wrote:

quoted

Nicholas Piggin [off-list ref] writes:

quoted

local_irq_enable can cause interrupts to be taken which could
take significant amount of processing time. The idle process
should set its polling flag before this, so another process that
wakes it during this time will not have to send an IPI.

Expand the TIF_POLLING_NRFLAG coverage to as large as possible.

Reviewed-by: Gautham R. Shenoy <redacted>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 drivers/cpuidle/cpuidle-powernv.c | 4 +++-
 drivers/cpuidle/cpuidle-pseries.c | 3 ++-
 2 files changed, 5 insertions(+), 2 deletions(-)  

I don't think the cpuidle folks are really interested in these changes,
but we should Cc them to be polite.

Can you resend patches 9, 10, 11 with a subject like:

  "cpuidle: powernv: Set polling ..."

And Cc the cpuidle folks:

$ ./scripts/get_maintainer.pl -f drivers/cpuidle
rjw@rjwysocki.net
daniel.lezcano@linaro.org
linux-pm@vger.kernel.org
linux-kernel@vger.kernel.org

Yeah I can do that. I'll send them as thier own series. They don't
depend on any of the patches in this series, so I should have done
that in the first place.

Great thanks.

cheers