On Thu, 2018-05-10 at 17:20:05 UTC, Nicholas Piggin wrote: > Using irq_work for processing OPAL event interrupts is not necessary. > irq_work is typically used to schedule work from NMI context, a > softirq may be more appropriate. However OPAL events are not > particularly performance or latency critical, so they can all be > invoked by kopald. > > This patch removes the irq_work queueing, and instead wakes up > kopald when there is an event to be processed. kopald processes > interrupts individually, enabling irqs and calling cond_resched > between each one to minimise latencies. > > Event handlers themselves should still use threaded handlers, > workqueues, etc. as necessary to avoid high interrupts-off latencies > within any single interrupt. > > Signed-off-by: Nicholas Piggin <npig...@gmail.com>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/56c0b48b1e443efa5d6f4d60513302 cheers