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authorThomas Gleixner <tglx@linutronix.de>2022-08-25 19:41:27 +0300
committerThomas Gleixner <tglx@linutronix.de>2022-09-19 15:35:08 +0300
commita738e9bad6030d4fd33bfd7db3399a250b7e94d8 (patch)
tree35ae639c7c133b6722252ceacf28d7e5802698d9 /lib/Kconfig.debug
parent7a025e91abd23effe869a05d037b26770ffa0309 (diff)
downloadlinux-a738e9bad6030d4fd33bfd7db3399a250b7e94d8.tar.xz
mm/debug: Provide VM_WARN_ON_IRQS_ENABLED()
Some places in the VM code expect interrupts disabled, which is a valid expectation on non-PREEMPT_RT kernels, but does not hold on RT kernels in some places because the RT spinlock substitution does not disable interrupts. To avoid sprinkling CONFIG_PREEMPT_RT conditionals into those places, provide VM_WARN_ON_IRQS_ENABLED() which is only enabled when VM_DEBUG=y and PREEMPT_RT=n. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Michal Hocko <mhocko@suse.com> Link: https://lore.kernel.org/r/20220825164131.402717-5-bigeasy@linutronix.de
Diffstat (limited to 'lib/Kconfig.debug')
-rw-r--r--lib/Kconfig.debug3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index bcbe60d6c80c..cdb4b27ef1a0 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -803,6 +803,9 @@ config ARCH_HAS_DEBUG_VM_PGTABLE
An architecture should select this when it can successfully
build and run DEBUG_VM_PGTABLE.
+config DEBUG_VM_IRQSOFF
+ def_bool DEBUG_VM && !PREEMPT_RT
+
config DEBUG_VM
bool "Debug VM"
depends on DEBUG_KERNEL