On Sat, Jun 11, 2022 at 07:00:44PM +0800, Zqiang wrote: > Currently, If the 'rcu_nocb_poll' bootargs is enable, all rcuog kthreads > enter polling mode. however, due to only insert CPU's rdp which belong to > rcu_nocb_mask to 'nocb_head_rdp' list or all CPU's rdp served by rcuog > kthread have been de-offloaded, these cause the 'nocb_head_rdp' list > served by rcuog kthread is empty, when the 'nocb_head_rdp' is empty, > the rcuog kthread in polling mode not actually do anything. fix it by > exiting polling mode when the 'nocb_head_rdp'list is empty, otherwise > entering polling mode. > > Co-developed-by: Frederic Weisbecker <frederic@xxxxxxxxxx> Acked-by: Frederic Weisbecker <frederic@xxxxxxxxxx> Thanks! (might be worth testing with TREE01 and --bootargs "rcu_gp_poll" )
