Hello, At the beginning of __schedule (kernel/sched/core.c), the current task is get with rq->curr. I try to to understand why not directly using current instead?
Since a runqueue is specific to a CPU, it dosen't make sense to get the the current task of another CPU's runqueue. Yes? I try the following of Linus's master branch - int cpu; - cpu = smp_processor_id(); - rq = cpu_rq(cpu); - prev = rq->curr; + rq = cpu_rq(smp_processor_id()); + prev = current; and it seems to work (only tested on x86-64), but... To simple? Thanks! Colin
