Re: [PATCH 1/3] powernv:smp: Add busy-wait loop as fall back for CPU-Hotplug

2017-03-14 Thread Nicholas Piggin
On Mon, 13 Mar 2017 11:31:26 +0530 "Gautham R. Shenoy" wrote: > [Changelog written with inputs from sva...@linux.vnet.ibm.com] > Signed-off-by: Gautham R. Shenoy Reviewed-by: Nicholas Piggin > --- > arch/powerpc/platforms/powernv/smp.c | 10 +- > 1 file changed, 9 insertions(+), 1 de

[PATCH 1/3] powernv:smp: Add busy-wait loop as fall back for CPU-Hotplug

2017-03-12 Thread Gautham R. Shenoy
From: "Gautham R. Shenoy" Currently, the powernv cpu-offline function assumes that platform idle states such as stop on POWER9, winkle/sleep/nap on POWER8 are always available. On POWER8, it picks nap as the default state if other deep idle states like sleep/winkle are not available and enabled i