This is a note to let you know that I've just added the patch titled rcu: Make TASKS_RUDE_RCU select IRQ_WORK to the 5.17-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: rcu-make-tasks_rude_rcu-select-irq_work.patch and it can be found in the queue-5.17 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit ab04821b3a6bcd36f9e7a280db948ac8bb5a3d6e Author: Paul E. McKenney <paulmck@xxxxxxxxxx> Date: Thu Mar 17 09:30:10 2022 -0700 rcu: Make TASKS_RUDE_RCU select IRQ_WORK [ Upstream commit 46e861be589881e0905b9ade3d8439883858721c ] The TASKS_RUDE_RCU does not select IRQ_WORK, which can result in build failures for kernels that do not otherwise select IRQ_WORK. This commit therefore causes the TASKS_RUDE_RCU Kconfig option to select IRQ_WORK. Reported-by: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx> Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig index bf8e341e75b4..f559870fbf8b 100644 --- a/kernel/rcu/Kconfig +++ b/kernel/rcu/Kconfig @@ -86,6 +86,7 @@ config TASKS_RCU config TASKS_RUDE_RCU def_bool 0 + select IRQ_WORK help This option enables a task-based RCU implementation that uses only context switch (including preemption) and user-mode