Re: [PATCH 13/13] powerpc: rewrite local_t using soft_irq

2016-09-16 Thread Nicholas Piggin
On Thu, 15 Sep 2016 18:32:03 +0530 Madhavan Srinivasan wrote: > Local atomic operations are fast and highly reentrant per CPU counters. > Used for percpu variable updates. Local atomic operations only guarantee > variable modification atomicity wrt the CPU which owns the data and > these needs to

Re: [PATCH 13/13] powerpc: rewrite local_t using soft_irq

2016-09-15 Thread kbuild test robot
Hi Madhavan, [auto build test ERROR on v4.8-rc6] [cannot apply to powerpc/next kvm-ppc/kvm-ppc-next mpe/next next-20160915] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] [Suggest to use git(>=2.9.0) format-patch --base= (or --base=auto for con

[PATCH 13/13] powerpc: rewrite local_t using soft_irq

2016-09-15 Thread Madhavan Srinivasan
Local atomic operations are fast and highly reentrant per CPU counters. Used for percpu variable updates. Local atomic operations only guarantee variable modification atomicity wrt the CPU which owns the data and these needs to be executed in a preemption safe way. Here is the design of this patch