On 22/07/2015 14:38, Andrew Jones wrote: > I took a quick look at this and see issues with the test code. First, > you're spinning on a stack variable with this, > > /* Wait for our turn */ > while(next_cpu != cpu); > > next_cpu needs to be global, and incremented atomically. I haven't gotten > around to adding atomic_add/inc yet, but it would easy, and I'm happy to > do it, even yet this week.
You can just use __sync_fetch_and_add(&next_cpu, 1) too, so we don't end up with too much arch-specific code. Paolo
