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rcu: Awaken grace-period kthread when stalled
Recent kernels can fail to awaken the grace-period kthread for quiescent-state forcing. This commit is a crude hack that does a wakeup any time a stall is detected. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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1 changed files with 3 additions and 1 deletions
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@ -1224,8 +1224,10 @@ static void rcu_check_gp_kthread_starvation(struct rcu_state *rsp)
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rsp->gp_flags,
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gp_state_getname(rsp->gp_state), rsp->gp_state,
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rsp->gp_kthread ? rsp->gp_kthread->state : ~0);
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if (rsp->gp_kthread)
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if (rsp->gp_kthread) {
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sched_show_task(rsp->gp_kthread);
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wake_up_process(rsp->gp_kthread);
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}
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}
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}
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