Re: Badness in xics_ipi_dispatch

2010-07-19 Thread Darren Hart
Michael Ellerman ellerman.id.au> writes: > > On Tue, 2010-04-20 at 17:17 -0500, Brian King wrote: > > In stress testing enabling and disabling of SMT, we are regularly > > seeing the badness warning below. Looking through the cpu offline > > path, this is what I see: > > > > 1. stop_cpu: IRQ's

Re: Badness in xics_ipi_dispatch

2010-04-20 Thread Michael Ellerman
On Tue, 2010-04-20 at 17:17 -0500, Brian King wrote: > In stress testing enabling and disabling of SMT, we are regularly > seeing the badness warning below. Looking through the cpu offline > path, this is what I see: > > 1. stop_cpu: IRQ's get disabled > 2. pseries_cpu_disable: set cpu offline (no

Badness in xics_ipi_dispatch

2010-04-20 Thread Brian King
In stress testing enabling and disabling of SMT, we are regularly seeing the badness warning below. Looking through the cpu offline path, this is what I see: 1. stop_cpu: IRQ's get disabled 2. pseries_cpu_disable: set cpu offline (no barriers after this) 3. xics_migrate_irqs_away: Remove ourselves