on 2017/8/29 20:45, Peter Zijlstra wrote:
On Tue, Aug 29, 2017 at 11:46:37AM +0000, Yang Zhang wrote:
Add poll in do_idle. For UP VM, if there are running task, it will not
goes into idle path, so we only enable poll in SMP VM.
Signed-off-by: Yang Zhang <yang.zhang...@gmail.com>
Signed-off-by: Quan Xu <quan....@gmail.com>
Broken SoB chain.
Peter, I can't follow 'Broken SoB chain'.. could you more about it?
-Quan
diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c
index 6c23e30..b374744 100644
--- a/kernel/sched/idle.c
+++ b/kernel/sched/idle.c
@@ -74,6 +74,7 @@ static noinline int __cpuidle cpu_idle_poll(void)
}
/* Weak implementations for optional arch specific functions */
+void __weak arch_cpu_idle_poll(void) { }
void __weak arch_cpu_idle_prepare(void) { }
void __weak arch_cpu_idle_enter(void) { }
And not a word on why we need a new arch hook. What's wrong with
arch_cpu_idle_enter() for instance?
