Re: [patch V3 12/20] powerpc/ps3: Convert half completion to rcuwait

Hi,

On 3/21/20 4:25 AM, Thomas Gleixner wrote:

From: Thomas Gleixner <redacted>

The PS3 notification interrupt and kthread use a hacked up completion to
communicate. Since we're wanting to change the completion implementation and
this is abuse anyway, replace it with a simple rcuwait since there is only ever
the one waiter.

AFAICT the kthread uses TASK_INTERRUPTIBLE to not increase loadavg, kthreads
cannot receive signals by default and this one doesn't look different. Use
TASK_IDLE instead.

I tested the patch set applied against v5.6-rc7 on the PS3 and it worked
as expected.

Tested by: Geoff Levand [off-list ref]