Zhouyi Zhou 3ac8587852 rcu: Fix undefined Kconfig macros ... Invoking scripts/checkkconfigsymbols.py in the Linux-kernel source tree located the following issues: 1. TREE_PREEMPT_RCU Referencing files: arch/sh/configs/sdk7786_defconfig It should now be CONFIG_PREEMPT_RCU. Except that the CONFIG_PREEMPT=y in that same file implies CONFIG_PREEMPT_RCU=y. Therefore, delete the CONFIG_TREE_PREEMPT_RCU=y line. The reason is as follows: In kernel/rcu/Kconfig, we have config PREEMPT_RCU bool default y if PREEMPTION https://www.kernel.org/doc/Documentation/kbuild/kconfig-language.txt says, "The default value is only assigned to the config symbol if no other value was set by the user (via the input prompt above)." there is no prompt in config PREEMPT_RCU entry, so we are guaranteed to get CONFIG_PREEMPT_RCU=y when CONFIG_PREEMPT is present. 2. RCU_CPU_STALL_INFO Referencing files: arch/xtensa/configs/nommu_kc705_defconfig The old Kconfig option RCU_CPU_STALL_INFO was removed by commit 75c27f119b ("rcu: Remove CONFIG_RCU_CPU_STALL_INFO"), and the kernel now acts as if this Kconfig option was unconditionally enabled. 3. RCU_NOCB_CPU_ALL Referencing files: Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Memory-Ordering.rst This is an old snapshot of the code. I update this from the real rcu_prepare_for_idle() function in kernel/rcu/tree_plugin.h. This change was tested by invoking "make htmldocs". 4. RCU_TORTURE_TESTS Referencing files: kernel/rcu/rcutorture.c Forward-progress checking conflicts with CPU-stall testing, so we should complain at "modprobe rcutorture" when both are enabled. Signed-off-by: Zhouyi Zhou <zhouzhouyi@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>		2021-09-13 16:32:46 -07:00
..
audio_kc705_defconfig	arch: xtensa: Remove CONFIG_OPROFILE support	2021-01-29 10:05:51 +05:30
cadence_csp_defconfig	xtensa: configs: Cleanup old Kconfig IO scheduler options	2020-01-30 15:55:51 -08:00
common_defconfig
generic_kc705_defconfig	arch: xtensa: Remove CONFIG_OPROFILE support	2021-01-29 10:05:51 +05:30
iss_defconfig	xtensa: configs: Cleanup old Kconfig IO scheduler options	2020-01-30 15:55:51 -08:00
nommu_kc705_defconfig	rcu: Fix undefined Kconfig macros	2021-09-13 16:32:46 -07:00
smp_lx200_defconfig	arch: xtensa: Remove CONFIG_OPROFILE support	2021-01-29 10:05:51 +05:30
virt_defconfig	xtensa: reorganize vectors placement	2020-02-04 21:57:02 -08:00
xip_kc705_defconfig	drivers/char: remove /dev/kmem for good	2021-05-07 00:26:34 -07:00