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| author | Paul E. McKenney <paulmck@kernel.org> | 2025-03-25 07:31:45 -0700 |
|---|---|---|
| committer | Boqun Feng <boqun.feng@gmail.com> | 2025-03-28 21:19:17 -0700 |
| commit | 1dc1e0b9d694eb9016d3105ca4ba8bd90eba888a (patch) | |
| tree | 755b2ecd8b012191a5e036d897067725228b9dac | |
| parent | 467c890f2d1ad6de9fd1dbd196fdc8f3ee63190a (diff) | |
srcu: Make FORCE_NEED_SRCU_NMI_SAFE depend on RCU_EXPERT
The FORCE_NEED_SRCU_NMI_SAFE is useful only for those wishing to test
the SRCU code paths that accommodate architectures that do not have
NMI-safe per-CPU operations, that is, those architectures that do not
select the ARCH_HAS_NMI_SAFE_THIS_CPU_OPS Kconfig option. As such, this
is a specialized Kconfig option that is not intended for casual users.
This commit therefore hides it behind the RCU_EXPERT Kconfig option.
Given that this new FORCE_NEED_SRCU_NMI_SAFE Kconfig option has no effect
unless the ARCH_HAS_NMI_SAFE_THIS_CPU_OPS Kconfig option is also selected,
it also depends on this Kconfig option.
[ paulmck: Apply Geert Uytterhoeven feedback. ]
[ boqun: Add the "Fixes" tag. ]
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Closes: https://lore.kernel.org/all/CAMuHMdX6dy9_tmpLkpcnGzxyRbe6qSWYukcPp=H1GzZdyd3qBQ@mail.gmail.com/
Fixes: 536e8b9b80bc ("srcu: Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing")
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
| -rw-r--r-- | kernel/rcu/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig index aa42de4d2768..4d9b21f69eaa 100644 --- a/kernel/rcu/Kconfig +++ b/kernel/rcu/Kconfig @@ -68,6 +68,8 @@ config TREE_SRCU config FORCE_NEED_SRCU_NMI_SAFE bool "Force selection of NEED_SRCU_NMI_SAFE" depends on !TINY_SRCU + depends on RCU_EXPERT + depends on ARCH_HAS_NMI_SAFE_THIS_CPU_OPS select NEED_SRCU_NMI_SAFE default n help |