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Date:   Tue,  5 Jan 2021 16:57:36 -0800
        "Paul E. McKenney" <>
Subject: [PATCH tip/core/rcu 6/6] rcu: Make TASKS_TRACE_RCU select IRQ_WORK

From: "Paul E. McKenney" <>

Tasks Trace RCU uses irq_work_queue() to safely awaken its grace-period
kthread, so this commit therefore causes the TASKS_TRACE_RCU Kconfig
option select the IRQ_WORK Kconfig option.

Reported-by: kernel test robot <>
Acked-by: Randy Dunlap <> # build-tested
Signed-off-by: Paul E. McKenney <>
 kernel/rcu/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig
index b71e21f..84dfa8d 100644
--- a/kernel/rcu/Kconfig
+++ b/kernel/rcu/Kconfig
@@ -95,6 +95,7 @@ config TASKS_RUDE_RCU
 	def_bool 0
+	select IRQ_WORK
 	  This option enables a task-based RCU implementation that uses
 	  explicit rcu_read_lock_trace() read-side markers, and allows

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