On 2013/2/1 5:57, Kirill Tkhai wrote: > > > 31.01.2013, 20:08, "Steven Rostedt" <rostedt@xxxxxxxxxxx>: >> On Mon, 2013-01-28 at 03:46 +0400, Kirill Tkhai wrote: >> >>> The patch aims to decrease the number of calls of push_rt_task() >>> in push_rt_tasks(). >>> >>> It's not necessary to push more than 'num_online_cpus() - 1' tasks. >>> If just pushed task doesn't leave its new CPU during our local call >>> of push_rt_tasks() than we won't push another task to the CPU. >>> If it leave or change priority than it will pull new task by itself. >> >> I'm curious. Have you hit situations where this was an issue? Or was >> this just discovered by code review? > > No, I did't hit this situation. It's impossible to hook every situation. > > Thanks for your explanation. > > Kirill > Suppose we have a large number of cpus(say 4096), with the last one running a low-priority task on it. Is it possible with this patch we will never reach the last cpu in case that previous cpu has complete the pulled task? -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
